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mariadb/sql/sql_type.cc
Alexander Barkov e2b03cd3b5 MDEV-12514 Split Item_temporal_func::fix_length_and_dec() + MDEV-12515 
This patch implements MDEV-12514 according to the task descriptions.
It automatically fixes:
MDEV-12515 Wrong value when storing DATE_ADD() and ADDTIME() to a numeric field

Additionally:

a. Moves Item_func::set_attributes_temporal() to
   Type_str_attributes::fix_attributes_temporal(),
  which is a more proper place and name for it.

b. Continues replacing calls for:
     set_handler_by_field_type(MYSQL_TYPE_XXX)
   to corresponding:
     set_handler(&type_handler_xxx)
   which is faster.
   Note, we should eventually get rid of almost all set_handler_by_field_type().

c. Makes type_handler_string, type_handler_time2, type_handler_newdate,
   type_handler_datetime2 public.
   (all built-in handlers will become public eventually)

d. Removing Item_temporal_func::sql_mode, as it was not used.
2017-04-19 05:20:19 +04:00

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/*
Copyright (c) 2015 MariaDB Foundation.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#include "sql_type.h"
#include "sql_const.h"
#include "sql_class.h"
#include "item.h"
#include "log.h"
static Type_handler_tiny type_handler_tiny;
static Type_handler_short type_handler_short;
static Type_handler_long type_handler_long;
static Type_handler_int24 type_handler_int24;
static Type_handler_year type_handler_year;
static Type_handler_time type_handler_time;
static Type_handler_date type_handler_date;
static Type_handler_timestamp type_handler_timestamp;
static Type_handler_timestamp2 type_handler_timestamp2;
static Type_handler_olddecimal type_handler_olddecimal;
static Type_handler_tiny_blob type_handler_tiny_blob;
static Type_handler_medium_blob type_handler_medium_blob;
static Type_handler_long_blob type_handler_long_blob;
static Type_handler_blob type_handler_blob;
Type_handler_null type_handler_null;
Type_handler_row type_handler_row;
Type_handler_string type_handler_string;
Type_handler_varchar type_handler_varchar;
Type_handler_longlong type_handler_longlong;
Type_handler_float type_handler_float;
Type_handler_double type_handler_double;
Type_handler_newdecimal type_handler_newdecimal;
Type_handler_datetime type_handler_datetime;
Type_handler_bit type_handler_bit;
Type_handler_enum type_handler_enum;
Type_handler_set type_handler_set;
Type_handler_time2 type_handler_time2;
Type_handler_newdate type_handler_newdate;
Type_handler_datetime2 type_handler_datetime2;
#ifdef HAVE_SPATIAL
Type_handler_geometry type_handler_geometry;
#endif
bool Type_handler_data::init()
{
#ifdef HAVE_SPATIAL
#ifndef DBUG_OFF
if (m_type_aggregator_non_commutative_test.add(&type_handler_geometry,
&type_handler_geometry,
&type_handler_geometry) ||
m_type_aggregator_non_commutative_test.add(&type_handler_geometry,
&type_handler_varchar,
&type_handler_long_blob))
return true;
#endif
return
m_type_aggregator_for_result.add(&type_handler_geometry,
&type_handler_null,
&type_handler_geometry) ||
m_type_aggregator_for_result.add(&type_handler_geometry,
&type_handler_geometry,
&type_handler_geometry) ||
m_type_aggregator_for_result.add(&type_handler_geometry,
&type_handler_blob,
&type_handler_long_blob) ||
m_type_aggregator_for_result.add(&type_handler_geometry,
&type_handler_varchar,
&type_handler_long_blob) ||
m_type_aggregator_for_result.add(&type_handler_geometry,
&type_handler_string,
&type_handler_long_blob) ||
m_type_aggregator_for_comparison.add(&type_handler_geometry,
&type_handler_geometry,
&type_handler_geometry) ||
m_type_aggregator_for_comparison.add(&type_handler_geometry,
&type_handler_null,
&type_handler_geometry) ||
m_type_aggregator_for_comparison.add(&type_handler_geometry,
&type_handler_long_blob,
&type_handler_long_blob);
#endif
return false;
}
Type_handler_data *type_handler_data= NULL;
void Type_std_attributes::set(const Field *field)
{
decimals= field->decimals();
unsigned_flag= MY_TEST(field->flags & UNSIGNED_FLAG);
collation.set(field->charset(), field->derivation(), field->repertoire());
fix_char_length(field->char_length());
}
/**
This method is used by:
- Item_user_var_as_out_param::field_type()
- Item_func_udf_str::field_type()
- Item_empty_string::make_field()
TODO: type_handler_adjusted_to_max_octet_length() and string_type_handler()
provide very similar functionality, to properly choose between
VARCHAR/VARBINARY vs TEXT/BLOB variations taking into accoung maximum
possible octet length.
We should probably get rid of either of them and use the same method
all around the code.
*/
const Type_handler *
Type_handler::string_type_handler(uint max_octet_length)
{
if (max_octet_length >= 16777216)
return &type_handler_long_blob;
else if (max_octet_length >= 65536)
return &type_handler_medium_blob;
return &type_handler_varchar;
}
/**
This method is used by:
- Item_sum_hybrid, e.g. MAX(item), MIN(item).
- Item_func_set_user_var
*/
const Type_handler *
Type_handler_string_result::type_handler_adjusted_to_max_octet_length(
uint max_octet_length,
CHARSET_INFO *cs) const
{
if (max_octet_length / cs->mbmaxlen <= CONVERT_IF_BIGGER_TO_BLOB)
return &type_handler_varchar; // See also Item::too_big_for_varchar()
if (max_octet_length >= 16777216)
return &type_handler_long_blob;
else if (max_octet_length >= 65536)
return &type_handler_medium_blob;
return &type_handler_blob;
}
CHARSET_INFO *Type_handler::charset_for_protocol(const Item *item) const
{
/*
For backward compatibility, to make numeric
data types return "binary" charset in client-side metadata.
*/
return &my_charset_bin;
}
bool
Type_handler::Item_func_or_sum_illegal_param(const char *funcname) const
{
my_error(ER_ILLEGAL_PARAMETER_DATA_TYPE_FOR_OPERATION, MYF(0),
name().ptr(), funcname);
return true;
}
bool
Type_handler::Item_func_or_sum_illegal_param(const Item_func_or_sum *it) const
{
return Item_func_or_sum_illegal_param(it->func_name());
}
CHARSET_INFO *
Type_handler_string_result::charset_for_protocol(const Item *item) const
{
return item->collation.collation;
}
const Type_handler *
Type_handler::get_handler_by_cmp_type(Item_result type)
{
switch (type) {
case REAL_RESULT: return &type_handler_double;
case INT_RESULT: return &type_handler_longlong;
case DECIMAL_RESULT: return &type_handler_newdecimal;
case STRING_RESULT: return &type_handler_long_blob;
case TIME_RESULT: return &type_handler_datetime;
case ROW_RESULT: return &type_handler_row;
}
DBUG_ASSERT(0);
return &type_handler_string;
}
Type_handler_hybrid_field_type::Type_handler_hybrid_field_type()
:m_type_handler(&type_handler_double)
{
}
/***************************************************************************/
const Name Type_handler_row::m_name_row(C_STRING_WITH_LEN("row"));
const Name Type_handler_null::m_name_null(C_STRING_WITH_LEN("null"));
const Name
Type_handler_string::m_name_char(C_STRING_WITH_LEN("char")),
Type_handler_varchar::m_name_varchar(C_STRING_WITH_LEN("varchar")),
Type_handler_tiny_blob::m_name_tinyblob(C_STRING_WITH_LEN("tinyblob")),
Type_handler_medium_blob::m_name_mediumblob(C_STRING_WITH_LEN("mediumblob")),
Type_handler_long_blob::m_name_longblob(C_STRING_WITH_LEN("longblob")),
Type_handler_blob::m_name_blob(C_STRING_WITH_LEN("blob"));
const Name
Type_handler_enum::m_name_enum(C_STRING_WITH_LEN("enum")),
Type_handler_set::m_name_set(C_STRING_WITH_LEN("set"));
const Name
Type_handler_tiny::m_name_tiny(C_STRING_WITH_LEN("tinyint")),
Type_handler_short::m_name_short(C_STRING_WITH_LEN("smallint")),
Type_handler_long::m_name_int(C_STRING_WITH_LEN("int")),
Type_handler_longlong::m_name_longlong(C_STRING_WITH_LEN("bigint")),
Type_handler_int24::m_name_mediumint(C_STRING_WITH_LEN("mediumint")),
Type_handler_year::m_name_year(C_STRING_WITH_LEN("year")),
Type_handler_bit::m_name_bit(C_STRING_WITH_LEN("bit"));
const Name
Type_handler_float::m_name_float(C_STRING_WITH_LEN("float")),
Type_handler_double::m_name_double(C_STRING_WITH_LEN("double"));
const Name
Type_handler_olddecimal::m_name_decimal(C_STRING_WITH_LEN("decimal")),
Type_handler_newdecimal::m_name_decimal(C_STRING_WITH_LEN("decimal"));
const Name
Type_handler_time_common::m_name_time(C_STRING_WITH_LEN("time")),
Type_handler_date_common::m_name_date(C_STRING_WITH_LEN("date")),
Type_handler_datetime_common::m_name_datetime(C_STRING_WITH_LEN("datetime")),
Type_handler_timestamp_common::m_name_timestamp(C_STRING_WITH_LEN("timestamp"));
/***************************************************************************/
const Type_handler *Type_handler_null::type_handler_for_comparison() const
{
return &type_handler_null;
}
const Type_handler *Type_handler_int_result::type_handler_for_comparison() const
{
return &type_handler_longlong;
}
const Type_handler *Type_handler_string_result::type_handler_for_comparison() const
{
return &type_handler_long_blob;
}
const Type_handler *Type_handler_decimal_result::type_handler_for_comparison() const
{
return &type_handler_newdecimal;
}
const Type_handler *Type_handler_real_result::type_handler_for_comparison() const
{
return &type_handler_double;
}
const Type_handler *Type_handler_time_common::type_handler_for_comparison() const
{
return &type_handler_time;
}
const Type_handler *Type_handler_temporal_with_date::type_handler_for_comparison() const
{
return &type_handler_datetime;
}
const Type_handler *Type_handler_row::type_handler_for_comparison() const
{
return &type_handler_row;
}
/***************************************************************************/
bool
Type_handler_hybrid_field_type::aggregate_for_result(const Type_handler *other)
{
if (m_type_handler->is_traditional_type() && other->is_traditional_type())
{
m_type_handler=
Type_handler::aggregate_for_result_traditional(m_type_handler, other);
return false;
}
other= type_handler_data->
m_type_aggregator_for_result.find_handler(m_type_handler, other);
if (!other)
return true;
m_type_handler= other;
return false;
}
/**
@brief Aggregates field types from the array of items.
@param[in] items array of items to aggregate the type from
@param[in] nitems number of items in the array
@param[in] treat_bit_as_number - if BIT should be aggregated to a non-BIT
counterpart as a LONGLONG number or as a VARBINARY string.
Currently behaviour depends on the function:
- LEAST/GREATEST treat BIT as VARBINARY when
aggregating with a non-BIT counterpart.
Note, UNION also works this way.
- CASE, COALESCE, IF, IFNULL treat BIT as LONGLONG when
aggregating with a non-BIT counterpart;
This inconsistency may be changed in the future. See MDEV-8867.
Note, independently from "treat_bit_as_number":
- a single BIT argument gives BIT as a result
- two BIT couterparts give BIT as a result
@details This function aggregates field types from the array of items.
Found type is supposed to be used later as the result field type
of a multi-argument function.
Aggregation itself is performed by Type_handler::aggregate_for_result().
@note The term "aggregation" is used here in the sense of inferring the
result type of a function from its argument types.
@retval false - on success
@retval true - on error
*/
bool
Type_handler_hybrid_field_type::aggregate_for_result(const char *funcname,
Item **items, uint nitems,
bool treat_bit_as_number)
{
if (!nitems || items[0]->result_type() == ROW_RESULT)
{
DBUG_ASSERT(0);
set_handler(&type_handler_null);
return true;
}
set_handler(items[0]->type_handler());
uint unsigned_count= items[0]->unsigned_flag;
for (uint i= 1 ; i < nitems ; i++)
{
const Type_handler *cur= items[i]->type_handler();
if (treat_bit_as_number &&
((type_handler() == &type_handler_bit) ^ (cur == &type_handler_bit)))
{
if (type_handler() == &type_handler_bit)
set_handler(&type_handler_longlong); // BIT + non-BIT
else
cur= &type_handler_longlong; // non-BIT + BIT
}
if (aggregate_for_result(cur))
{
my_error(ER_ILLEGAL_PARAMETER_DATA_TYPES2_FOR_OPERATION, MYF(0),
type_handler()->name().ptr(), cur->name().ptr(), funcname);
return true;
}
unsigned_count+= items[i]->unsigned_flag;
}
switch (field_type()) {
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONGLONG:
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_YEAR:
case MYSQL_TYPE_BIT:
if (unsigned_count != 0 && unsigned_count != nitems)
{
/*
If all arguments are of INT-alike type but have different
unsigned_flag, then convert to DECIMAL.
*/
set_handler(&type_handler_newdecimal);
}
default:
break;
}
return false;
}
/**
Collect built-in data type handlers for comparison.
This method is very similar to item_cmp_type() defined in item.cc.
Now they coexist. Later item_cmp_type() will be removed.
In addition to item_cmp_type(), this method correctly aggregates
TIME with DATETIME/TIMESTAMP/DATE, so no additional find_date_time_item()
is needed after this call.
*/
bool
Type_handler_hybrid_field_type::aggregate_for_comparison(const Type_handler *h)
{
DBUG_ASSERT(m_type_handler == m_type_handler->type_handler_for_comparison());
DBUG_ASSERT(h == h->type_handler_for_comparison());
if (!m_type_handler->is_traditional_type() ||
!h->is_traditional_type())
{
h= type_handler_data->
m_type_aggregator_for_comparison.find_handler(m_type_handler, h);
if (!h)
return true;
m_type_handler= h;
DBUG_ASSERT(m_type_handler == m_type_handler->type_handler_for_comparison());
return false;
}
Item_result a= cmp_type();
Item_result b= h->cmp_type();
if (a == STRING_RESULT && b == STRING_RESULT)
m_type_handler= &type_handler_long_blob;
else if (a == INT_RESULT && b == INT_RESULT)
m_type_handler= &type_handler_longlong;
else if (a == ROW_RESULT || b == ROW_RESULT)
m_type_handler= &type_handler_row;
else if (a == TIME_RESULT || b == TIME_RESULT)
{
if ((a == TIME_RESULT) + (b == TIME_RESULT) == 1)
{
/*
We're here if there's only one temporal data type:
either m_type_handler or h.
*/
if (b == TIME_RESULT)
m_type_handler= h; // Temporal types bit non-temporal types
}
else
{
/*
We're here if both m_type_handler and h are temporal data types.
*/
if (field_type() != MYSQL_TYPE_TIME || h->field_type() != MYSQL_TYPE_TIME)
m_type_handler= &type_handler_datetime; // DATETIME bits TIME
}
}
else if ((a == INT_RESULT || a == DECIMAL_RESULT) &&
(b == INT_RESULT || b == DECIMAL_RESULT))
{
m_type_handler= &type_handler_newdecimal;
}
else
m_type_handler= &type_handler_double;
DBUG_ASSERT(m_type_handler == m_type_handler->type_handler_for_comparison());
return false;
}
const Type_handler *
Type_handler::aggregate_for_num_op_traditional(const Type_handler *h0,
const Type_handler *h1)
{
Item_result r0= h0->cmp_type();
Item_result r1= h1->cmp_type();
if (r0 == REAL_RESULT || r1 == REAL_RESULT ||
r0 == STRING_RESULT || r1 ==STRING_RESULT)
return &type_handler_double;
if (r0 == TIME_RESULT || r1 == TIME_RESULT)
return &type_handler_datetime;
if (r0 == DECIMAL_RESULT || r1 == DECIMAL_RESULT)
return &type_handler_newdecimal;
DBUG_ASSERT(r0 == INT_RESULT && r1 == INT_RESULT);
return &type_handler_longlong;
}
const Type_aggregator::Pair*
Type_aggregator::find_pair(const Type_handler *handler1,
const Type_handler *handler2) const
{
for (uint i= 0; i < m_array.elements(); i++)
{
const Pair& el= m_array.at(i);
if (el.eq(handler1, handler2) ||
(m_is_commutative && el.eq(handler2, handler1)))
return &el;
}
return NULL;
}
bool
Type_handler_hybrid_field_type::aggregate_for_num_op(const Type_aggregator *agg,
const Type_handler *h0,
const Type_handler *h1)
{
const Type_handler *hres;
if (h0->is_traditional_type() && h1->is_traditional_type())
{
set_handler(Type_handler::aggregate_for_num_op_traditional(h0, h1));
return false;
}
if ((hres= agg->find_handler(h0, h1)))
{
set_handler(hres);
return false;
}
return true;
}
/***************************************************************************/
const Type_handler *
Type_handler::get_handler_by_field_type(enum_field_types type)
{
switch (type) {
case MYSQL_TYPE_DECIMAL: return &type_handler_olddecimal;
case MYSQL_TYPE_NEWDECIMAL: return &type_handler_newdecimal;
case MYSQL_TYPE_TINY: return &type_handler_tiny;
case MYSQL_TYPE_SHORT: return &type_handler_short;
case MYSQL_TYPE_LONG: return &type_handler_long;
case MYSQL_TYPE_LONGLONG: return &type_handler_longlong;
case MYSQL_TYPE_INT24: return &type_handler_int24;
case MYSQL_TYPE_YEAR: return &type_handler_year;
case MYSQL_TYPE_BIT: return &type_handler_bit;
case MYSQL_TYPE_FLOAT: return &type_handler_float;
case MYSQL_TYPE_DOUBLE: return &type_handler_double;
case MYSQL_TYPE_NULL: return &type_handler_null;
case MYSQL_TYPE_VARCHAR: return &type_handler_varchar;
case MYSQL_TYPE_TINY_BLOB: return &type_handler_tiny_blob;
case MYSQL_TYPE_MEDIUM_BLOB: return &type_handler_medium_blob;
case MYSQL_TYPE_LONG_BLOB: return &type_handler_long_blob;
case MYSQL_TYPE_BLOB: return &type_handler_blob;
case MYSQL_TYPE_VAR_STRING: return &type_handler_varchar; // Map to VARCHAR
case MYSQL_TYPE_STRING: return &type_handler_string;
case MYSQL_TYPE_ENUM: return &type_handler_varchar; // Map to VARCHAR
case MYSQL_TYPE_SET: return &type_handler_varchar; // Map to VARCHAR
case MYSQL_TYPE_GEOMETRY:
#ifdef HAVE_SPATIAL
return &type_handler_geometry;
#else
return NULL;
#endif
case MYSQL_TYPE_TIMESTAMP: return &type_handler_timestamp2;// Map to timestamp2
case MYSQL_TYPE_TIMESTAMP2: return &type_handler_timestamp2;
case MYSQL_TYPE_DATE: return &type_handler_newdate; // Map to newdate
case MYSQL_TYPE_TIME: return &type_handler_time2; // Map to time2
case MYSQL_TYPE_TIME2: return &type_handler_time2;
case MYSQL_TYPE_DATETIME: return &type_handler_datetime2; // Map to datetime2
case MYSQL_TYPE_DATETIME2: return &type_handler_datetime2;
case MYSQL_TYPE_NEWDATE:
/*
NEWDATE is actually a real_type(), not a field_type(),
but it's used around the code in field_type() context.
We should probably clean up the code not to use MYSQL_TYPE_NEWDATE
in field_type() context and add DBUG_ASSERT(0) here.
*/
return &type_handler_newdate;
};
DBUG_ASSERT(0);
return &type_handler_string;
}
const Type_handler *
Type_handler::get_handler_by_real_type(enum_field_types type)
{
switch (type) {
case MYSQL_TYPE_DECIMAL: return &type_handler_olddecimal;
case MYSQL_TYPE_NEWDECIMAL: return &type_handler_newdecimal;
case MYSQL_TYPE_TINY: return &type_handler_tiny;
case MYSQL_TYPE_SHORT: return &type_handler_short;
case MYSQL_TYPE_LONG: return &type_handler_long;
case MYSQL_TYPE_LONGLONG: return &type_handler_longlong;
case MYSQL_TYPE_INT24: return &type_handler_int24;
case MYSQL_TYPE_YEAR: return &type_handler_year;
case MYSQL_TYPE_BIT: return &type_handler_bit;
case MYSQL_TYPE_FLOAT: return &type_handler_float;
case MYSQL_TYPE_DOUBLE: return &type_handler_double;
case MYSQL_TYPE_NULL: return &type_handler_null;
case MYSQL_TYPE_VARCHAR: return &type_handler_varchar;
case MYSQL_TYPE_TINY_BLOB: return &type_handler_tiny_blob;
case MYSQL_TYPE_MEDIUM_BLOB: return &type_handler_medium_blob;
case MYSQL_TYPE_LONG_BLOB: return &type_handler_long_blob;
case MYSQL_TYPE_BLOB: return &type_handler_blob;
case MYSQL_TYPE_VAR_STRING:
/*
VAR_STRING is actually a field_type(), not a real_type(),
but it's used around the code in real_type() context.
We should clean up the code and add DBUG_ASSERT(0) here.
*/
return &type_handler_string;
case MYSQL_TYPE_STRING: return &type_handler_string;
case MYSQL_TYPE_ENUM: return &type_handler_enum;
case MYSQL_TYPE_SET: return &type_handler_set;
case MYSQL_TYPE_GEOMETRY:
#ifdef HAVE_SPATIAL
return &type_handler_geometry;
#else
return NULL;
#endif
case MYSQL_TYPE_TIMESTAMP: return &type_handler_timestamp;
case MYSQL_TYPE_TIMESTAMP2: return &type_handler_timestamp2;
case MYSQL_TYPE_DATE: return &type_handler_date;
case MYSQL_TYPE_TIME: return &type_handler_time;
case MYSQL_TYPE_TIME2: return &type_handler_time2;
case MYSQL_TYPE_DATETIME: return &type_handler_datetime;
case MYSQL_TYPE_DATETIME2: return &type_handler_datetime2;
case MYSQL_TYPE_NEWDATE: return &type_handler_newdate;
};
DBUG_ASSERT(0);
return &type_handler_string;
}
/**
Create a DOUBLE field by default.
*/
Field *
Type_handler::make_num_distinct_aggregator_field(MEM_ROOT *mem_root,
const Item *item) const
{
return new(mem_root)
Field_double(NULL, item->max_length,
(uchar *) (item->maybe_null ? "" : 0),
item->maybe_null ? 1 : 0, Field::NONE,
item->name, item->decimals, 0, item->unsigned_flag);
}
Field *
Type_handler_float::make_num_distinct_aggregator_field(MEM_ROOT *mem_root,
const Item *item)
const
{
return new(mem_root)
Field_float(NULL, item->max_length,
(uchar *) (item->maybe_null ? "" : 0),
item->maybe_null ? 1 : 0, Field::NONE,
item->name, item->decimals, 0, item->unsigned_flag);
}
Field *
Type_handler_decimal_result::make_num_distinct_aggregator_field(
MEM_ROOT *mem_root,
const Item *item)
const
{
DBUG_ASSERT(item->decimals <= DECIMAL_MAX_SCALE);
return new (mem_root)
Field_new_decimal(NULL, item->max_length,
(uchar *) (item->maybe_null ? "" : 0),
item->maybe_null ? 1 : 0, Field::NONE,
item->name, item->decimals, 0, item->unsigned_flag);
}
Field *
Type_handler_int_result::make_num_distinct_aggregator_field(MEM_ROOT *mem_root,
const Item *item)
const
{
/**
Make a longlong field for all INT-alike types. It could create
smaller fields for TINYINT, SMALLINT, MEDIUMINT, INT though.
*/
return new(mem_root)
Field_longlong(NULL, item->max_length,
(uchar *) (item->maybe_null ? "" : 0),
item->maybe_null ? 1 : 0, Field::NONE,
item->name, 0, item->unsigned_flag);
}
/***********************************************************************/
#define TMPNAME ""
Field *Type_handler_tiny::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
/*
As we don't know if the integer was signed or not on the master,
assume we have same sign on master and slave. This is true when not
using conversions so it should be true also when using conversions.
*/
bool unsigned_flag= ((Field_num*) target)->unsigned_flag;
return new (table->in_use->mem_root)
Field_tiny(NULL, 4 /*max_length*/, (uchar *) "", 1, Field::NONE,
TMPNAME, 0/*zerofill*/, unsigned_flag);
}
Field *Type_handler_short::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
bool unsigned_flag= ((Field_num*) target)->unsigned_flag;
return new (table->in_use->mem_root)
Field_short(NULL, 6 /*max_length*/, (uchar *) "", 1, Field::NONE,
TMPNAME, 0/*zerofill*/, unsigned_flag);
}
Field *Type_handler_int24::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
bool unsigned_flag= ((Field_num*) target)->unsigned_flag;
return new (table->in_use->mem_root)
Field_medium(NULL, 9 /*max_length*/, (uchar *) "", 1, Field::NONE,
TMPNAME, 0/*zerofill*/, unsigned_flag);
}
Field *Type_handler_long::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
bool unsigned_flag= ((Field_num*) target)->unsigned_flag;
return new (table->in_use->mem_root)
Field_long(NULL, 11 /*max_length*/, (uchar *) "", 1, Field::NONE,
TMPNAME, 0/*zerofill*/, unsigned_flag);
}
Field *Type_handler_longlong::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
bool unsigned_flag= ((Field_num*) target)->unsigned_flag;
return new (table->in_use->mem_root)
Field_longlong(NULL, 20 /*max_length*/,(uchar *) "", 1, Field::NONE,
TMPNAME, 0/*zerofill*/, unsigned_flag);
}
Field *Type_handler_float::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new (table->in_use->mem_root)
Field_float(NULL, 12 /*max_length*/, (uchar *) "", 1, Field::NONE,
TMPNAME, 0/*dec*/, 0/*zerofill*/, 0/*unsigned_flag*/);
}
Field *Type_handler_double::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new (table->in_use->mem_root)
Field_double(NULL, 22 /*max_length*/, (uchar *) "", 1, Field::NONE,
TMPNAME, 0/*dec*/, 0/*zerofill*/, 0/*unsigned_flag*/);
}
Field *Type_handler_newdecimal::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
int precision= metadata >> 8;
uint decimals= metadata & 0x00ff;
uint32 max_length= my_decimal_precision_to_length(precision, decimals, false);
DBUG_ASSERT(decimals <= DECIMAL_MAX_SCALE);
return new (table->in_use->mem_root)
Field_new_decimal(NULL, max_length, (uchar *) "", 1, Field::NONE,
TMPNAME, decimals, 0/*zerofill*/, 0/*unsigned*/);
}
Field *Type_handler_olddecimal::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
sql_print_error("In RBR mode, Slave received incompatible DECIMAL field "
"(old-style decimal field) from Master while creating "
"conversion table. Please consider changing datatype on "
"Master to new style decimal by executing ALTER command for"
" column Name: %s.%s.%s.",
target->table->s->db.str,
target->table->s->table_name.str,
target->field_name);
return NULL;
}
Field *Type_handler_year::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_year(NULL, 4, (uchar *) "", 1, Field::NONE, TMPNAME);
}
Field *Type_handler_null::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_null(NULL, 0, Field::NONE, TMPNAME, target->charset());
}
Field *Type_handler_timestamp::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new_Field_timestamp(table->in_use->mem_root, NULL, (uchar *) "", 1,
Field::NONE, TMPNAME, table->s, target->decimals());
}
Field *Type_handler_timestamp2::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_timestampf(NULL, (uchar *) "", 1, Field::NONE,
TMPNAME, table->s, metadata);
}
Field *Type_handler_newdate::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_newdate(NULL, (uchar *) "", 1, Field::NONE, TMPNAME);
}
Field *Type_handler_date::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_date(NULL, (uchar *) "", 1, Field::NONE, TMPNAME);
}
Field *Type_handler_time::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new_Field_time(table->in_use->mem_root, NULL, (uchar *) "", 1,
Field::NONE, TMPNAME, target->decimals());
}
Field *Type_handler_time2::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_timef(NULL, (uchar *) "", 1, Field::NONE, TMPNAME, metadata);
}
Field *Type_handler_datetime::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new_Field_datetime(table->in_use->mem_root, NULL, (uchar *) "", 1,
Field::NONE, TMPNAME, target->decimals());
}
Field *Type_handler_datetime2::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_datetimef(NULL, (uchar *) "", 1,
Field::NONE, TMPNAME, metadata);
}
Field *Type_handler_bit::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
DBUG_ASSERT((metadata & 0xff) <= 7);
uint32 max_length= 8 * (metadata >> 8U) + (metadata & 0x00ff);
return new(table->in_use->mem_root)
Field_bit_as_char(NULL, max_length, (uchar *) "", 1,
Field::NONE, TMPNAME);
}
Field *Type_handler_string::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
/* This is taken from Field_string::unpack. */
uint32 max_length= (((metadata >> 4) & 0x300) ^ 0x300) + (metadata & 0x00ff);
return new(table->in_use->mem_root)
Field_string(NULL, max_length, (uchar *) "", 1,
Field::NONE, TMPNAME, target->charset());
}
Field *Type_handler_varchar::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_varstring(NULL, metadata, HA_VARCHAR_PACKLENGTH(metadata),
(uchar *) "", 1, Field::NONE, TMPNAME,
table->s, target->charset());
}
Field *Type_handler_tiny_blob::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_blob(NULL, (uchar *) "", 1, Field::NONE, TMPNAME,
table->s, 1, target->charset());
}
Field *Type_handler_blob::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_blob(NULL, (uchar *) "", 1, Field::NONE, TMPNAME,
table->s, 2, target->charset());
}
Field *Type_handler_medium_blob::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_blob(NULL, (uchar *) "", 1, Field::NONE, TMPNAME,
table->s, 3, target->charset());
}
Field *Type_handler_long_blob::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
return new(table->in_use->mem_root)
Field_blob(NULL, (uchar *) "", 1, Field::NONE, TMPNAME,
table->s, 4, target->charset());
}
#ifdef HAVE_SPATIAL
const Name Type_handler_geometry::m_name_geometry(C_STRING_WITH_LEN("geometry"));
const Type_handler *Type_handler_geometry::type_handler_for_comparison() const
{
return &type_handler_geometry;
}
Field *Type_handler_geometry::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
DBUG_ASSERT(target->type() == MYSQL_TYPE_GEOMETRY);
/*
We do not do not update feature_gis statistics here:
status_var_increment(target->table->in_use->status_var.feature_gis);
as this is only a temporary field.
The statistics was already incremented when "target" was created.
*/
return new(table->in_use->mem_root)
Field_geom(NULL, (uchar *) "", 1, Field::NONE, TMPNAME, table->s, 4,
((const Field_geom*) target)->geom_type,
((const Field_geom*) target)->srid);
}
#endif
Field *Type_handler_enum::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
DBUG_ASSERT(target->type() == MYSQL_TYPE_STRING);
DBUG_ASSERT(target->real_type() == MYSQL_TYPE_ENUM);
return new(table->in_use->mem_root)
Field_enum(NULL, target->field_length,
(uchar *) "", 1, Field::NONE, TMPNAME,
metadata & 0x00ff/*pack_length()*/,
((const Field_enum*) target)->typelib, target->charset());
}
Field *Type_handler_set::make_conversion_table_field(TABLE *table,
uint metadata,
const Field *target)
const
{
DBUG_ASSERT(target->type() == MYSQL_TYPE_STRING);
DBUG_ASSERT(target->real_type() == MYSQL_TYPE_SET);
return new(table->in_use->mem_root)
Field_set(NULL, target->field_length,
(uchar *) "", 1, Field::NONE, TMPNAME,
metadata & 0x00ff/*pack_length()*/,
((const Field_enum*) target)->typelib, target->charset());
}
/*************************************************************************/
uint32 Type_handler_decimal_result::max_display_length(const Item *item) const
{
return item->max_length;
}
uint32 Type_handler_temporal_result::max_display_length(const Item *item) const
{
return item->max_length;
}
uint32 Type_handler_string_result::max_display_length(const Item *item) const
{
return item->max_length;
}
uint32 Type_handler_year::max_display_length(const Item *item) const
{
return item->max_length;
}
uint32 Type_handler_bit::max_display_length(const Item *item) const
{
return item->max_length;
}
/*************************************************************************/
int Type_handler_time_common::Item_save_in_field(Item *item, Field *field,
bool no_conversions) const
{
return item->save_time_in_field(field, no_conversions);
}
int Type_handler_temporal_with_date::Item_save_in_field(Item *item,
Field *field,
bool no_conversions)
const
{
return item->save_date_in_field(field, no_conversions);
}
int Type_handler_string_result::Item_save_in_field(Item *item, Field *field,
bool no_conversions) const
{
return item->save_str_in_field(field, no_conversions);
}
int Type_handler_real_result::Item_save_in_field(Item *item, Field *field,
bool no_conversions) const
{
return item->save_real_in_field(field, no_conversions);
}
int Type_handler_decimal_result::Item_save_in_field(Item *item, Field *field,
bool no_conversions) const
{
return item->save_decimal_in_field(field, no_conversions);
}
int Type_handler_int_result::Item_save_in_field(Item *item, Field *field,
bool no_conversions) const
{
return item->save_int_in_field(field, no_conversions);
}
/***********************************************************************/
bool Type_handler_row::set_comparator_func(Arg_comparator *cmp) const
{
return cmp->set_cmp_func_row();
}
bool Type_handler_int_result::set_comparator_func(Arg_comparator *cmp) const
{
return cmp->set_cmp_func_int();
}
bool Type_handler_real_result::set_comparator_func(Arg_comparator *cmp) const
{
return cmp->set_cmp_func_real();
}
bool Type_handler_decimal_result::set_comparator_func(Arg_comparator *cmp) const
{
return cmp->set_cmp_func_decimal();
}
bool Type_handler_string_result::set_comparator_func(Arg_comparator *cmp) const
{
return cmp->set_cmp_func_string();
}
bool Type_handler_temporal_result::set_comparator_func(Arg_comparator *cmp) const
{
return cmp->set_cmp_func_temporal();
}
/*************************************************************************/
bool Type_handler_temporal_result::
can_change_cond_ref_to_const(Item_bool_func2 *target,
Item *target_expr, Item *target_value,
Item_bool_func2 *source,
Item *source_expr, Item *source_const)
const
{
if (source->compare_type_handler()->cmp_type() != TIME_RESULT)
return false;
/*
Can't rewrite:
WHERE COALESCE(time_column)='00:00:00'
AND COALESCE(time_column)=DATE'2015-09-11'
to
WHERE DATE'2015-09-11'='00:00:00'
AND COALESCE(time_column)=DATE'2015-09-11'
because the left part will erroneously try to parse '00:00:00'
as DATE, not as TIME.
TODO: It could still be rewritten to:
WHERE DATE'2015-09-11'=TIME'00:00:00'
AND COALESCE(time_column)=DATE'2015-09-11'
i.e. we need to replace both target_expr and target_value
at the same time. This is not supported yet.
*/
return target_value->cmp_type() == TIME_RESULT;
}
bool Type_handler_string_result::
can_change_cond_ref_to_const(Item_bool_func2 *target,
Item *target_expr, Item *target_value,
Item_bool_func2 *source,
Item *source_expr, Item *source_const)
const
{
if (source->compare_type_handler()->cmp_type() != STRING_RESULT)
return false;
/*
In this example:
SET NAMES utf8 COLLATE utf8_german2_ci;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a CHAR(10) CHARACTER SET utf8);
INSERT INTO t1 VALUES ('o-umlaut'),('oe');
SELECT * FROM t1 WHERE a='oe' COLLATE utf8_german2_ci AND a='oe';
the query should return only the row with 'oe'.
It should not return 'o-umlaut', because 'o-umlaut' does not match
the right part of the condition: a='oe'
('o-umlaut' is not equal to 'oe' in utf8_general_ci,
which is the collation of the field "a").
If we change the right part from:
... AND a='oe'
to
... AND 'oe' COLLATE utf8_german2_ci='oe'
it will be evalulated to TRUE and removed from the condition,
so the overall query will be simplified to:
SELECT * FROM t1 WHERE a='oe' COLLATE utf8_german2_ci;
which will erroneously start to return both 'oe' and 'o-umlaut'.
So changing "expr" to "const" is not possible if the effective
collations of "target" and "source" are not exactly the same.
Note, the code before the fix for MDEV-7152 only checked that
collations of "source_const" and "target_value" are the same.
This was not enough, as the bug report demonstrated.
*/
return
target->compare_collation() == source->compare_collation() &&
target_value->collation.collation == source_const->collation.collation;
}
bool Type_handler_numeric::
can_change_cond_ref_to_const(Item_bool_func2 *target,
Item *target_expr, Item *target_value,
Item_bool_func2 *source,
Item *source_expr, Item *source_const)
const
{
/*
The collations of "target" and "source" do not make sense for numeric
data types.
*/
return target->compare_type_handler() == source->compare_type_handler();
}
/*************************************************************************/
Item_cache *
Type_handler_row::Item_get_cache(THD *thd, const Item *item) const
{
return new (thd->mem_root) Item_cache_row(thd);
}
Item_cache *
Type_handler_int_result::Item_get_cache(THD *thd, const Item *item) const
{
return new (thd->mem_root) Item_cache_int(thd, item->field_type());
}
Item_cache *
Type_handler_real_result::Item_get_cache(THD *thd, const Item *item) const
{
return new (thd->mem_root) Item_cache_real(thd);
}
Item_cache *
Type_handler_decimal_result::Item_get_cache(THD *thd, const Item *item) const
{
return new (thd->mem_root) Item_cache_decimal(thd);
}
Item_cache *
Type_handler_string_result::Item_get_cache(THD *thd, const Item *item) const
{
return new (thd->mem_root) Item_cache_str(thd, item);
}
Item_cache *
Type_handler_temporal_result::Item_get_cache(THD *thd, const Item *item) const
{
return new (thd->mem_root) Item_cache_temporal(thd, item->field_type());
}
/*************************************************************************/
bool Type_handler_int_result::
Item_hybrid_func_fix_attributes(THD *thd, Item_hybrid_func *func,
Item **items, uint nitems) const
{
func->aggregate_attributes_int(items, nitems);
return false;
}
bool Type_handler_real_result::
Item_hybrid_func_fix_attributes(THD *thd, Item_hybrid_func *func,
Item **items, uint nitems) const
{
func->aggregate_attributes_real(items, nitems);
return false;
}
bool Type_handler_decimal_result::
Item_hybrid_func_fix_attributes(THD *thd, Item_hybrid_func *func,
Item **items, uint nitems) const
{
func->aggregate_attributes_decimal(items, nitems);
return false;
}
bool Type_handler_string_result::
Item_hybrid_func_fix_attributes(THD *thd, Item_hybrid_func *func,
Item **items, uint nitems) const
{
return func->aggregate_attributes_string(items, nitems);
}
bool Type_handler_date_common::
Item_hybrid_func_fix_attributes(THD *thd, Item_hybrid_func *func,
Item **items, uint nitems) const
{
func->fix_attributes_date();
return false;
}
bool Type_handler_time_common::
Item_hybrid_func_fix_attributes(THD *thd, Item_hybrid_func *func,
Item **items, uint nitems) const
{
func->aggregate_attributes_temporal(MIN_TIME_WIDTH, items, nitems);
return false;
}
bool Type_handler_datetime_common::
Item_hybrid_func_fix_attributes(THD *thd, Item_hybrid_func *func,
Item **items, uint nitems) const
{
func->aggregate_attributes_temporal(MAX_DATETIME_WIDTH, items, nitems);
return false;
}
bool Type_handler_timestamp_common::
Item_hybrid_func_fix_attributes(THD *thd, Item_hybrid_func *func,
Item **items, uint nitems) const
{
func->aggregate_attributes_temporal(MAX_DATETIME_WIDTH, items, nitems);
return false;
}
/*************************************************************************/
/**
MAX/MIN for the traditional numeric types preserve the exact data type
from Fields, but do not preserve the exact type from Items:
MAX(float_field) -> FLOAT
MAX(smallint_field) -> LONGLONG
MAX(COALESCE(float_field)) -> DOUBLE
MAX(COALESCE(smallint_field)) -> LONGLONG
QQ: Items should probably be fixed to preserve the exact type.
*/
bool Type_handler_numeric::
Item_sum_hybrid_fix_length_and_dec_numeric(Item_sum_hybrid *func,
const Type_handler *handler)
const
{
Item *item= func->arguments()[0];
Item *item2= item->real_item();
func->Type_std_attributes::set(item);
/* MIN/MAX can return NULL for empty set indepedent of the used column */
func->maybe_null= func->null_value= true;
if (item2->type() == Item::FIELD_ITEM)
func->set_handler_by_field_type(item2->field_type());
else
func->set_handler(handler);
return false;
}
bool Type_handler_int_result::
Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *func) const
{
return Item_sum_hybrid_fix_length_and_dec_numeric(func,
&type_handler_longlong);
}
bool Type_handler_real_result::
Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *func) const
{
(void) Item_sum_hybrid_fix_length_and_dec_numeric(func,
&type_handler_double);
func->max_length= func->float_length(func->decimals);
return false;
}
bool Type_handler_decimal_result::
Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *func) const
{
return Item_sum_hybrid_fix_length_and_dec_numeric(func,
&type_handler_newdecimal);
}
/**
MAX(str_field) converts ENUM/SET to CHAR, and preserve all other types
for Fields.
QQ: This works differently from UNION, which preserve the exact data
type for ENUM/SET if the joined ENUM/SET fields are equally defined.
Perhaps should be fixed.
MAX(str_item) chooses the best suitable string type.
*/
bool Type_handler_string_result::
Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *func) const
{
Item *item= func->arguments()[0];
Item *item2= item->real_item();
func->Type_std_attributes::set(item);
func->maybe_null= func->null_value= true;
if (item2->type() == Item::FIELD_ITEM)
{
// Fields: convert ENUM/SET to CHAR, preserve the type otherwise.
func->set_handler_by_field_type(item->field_type());
}
else
{
// Items: choose VARCHAR/BLOB/MEDIUMBLOB/LONGBLOB, depending on length.
func->set_handler(type_handler_varchar.
type_handler_adjusted_to_max_octet_length(func->max_length,
func->collation.collation));
}
return false;
}
/**
Traditional temporal types always preserve the type of the argument.
*/
bool Type_handler_temporal_result::
Item_sum_hybrid_fix_length_and_dec(Item_sum_hybrid *func) const
{
Item *item= func->arguments()[0];
func->Type_std_attributes::set(item);
func->maybe_null= func->null_value= true;
func->set_handler(item->type_handler());
return false;
}
/*************************************************************************/
bool Type_handler_int_result::
Item_sum_sum_fix_length_and_dec(Item_sum_sum *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_decimal_result::
Item_sum_sum_fix_length_and_dec(Item_sum_sum *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_sum_sum_fix_length_and_dec(Item_sum_sum *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_real_result::
Item_sum_sum_fix_length_and_dec(Item_sum_sum *item) const
{
item->fix_length_and_dec_double();
return false;
}
bool Type_handler_string_result::
Item_sum_sum_fix_length_and_dec(Item_sum_sum *item) const
{
item->fix_length_and_dec_double();
return false;
}
#ifdef HAVE_SPATIAL
bool Type_handler_geometry::
Item_sum_sum_fix_length_and_dec(Item_sum_sum *item) const
{
return Item_func_or_sum_illegal_param("sum");
}
#endif
/*************************************************************************/
bool Type_handler_int_result::
Item_sum_avg_fix_length_and_dec(Item_sum_avg *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_decimal_result::
Item_sum_avg_fix_length_and_dec(Item_sum_avg *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_sum_avg_fix_length_and_dec(Item_sum_avg *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_real_result::
Item_sum_avg_fix_length_and_dec(Item_sum_avg *item) const
{
item->fix_length_and_dec_double();
return false;
}
bool Type_handler_string_result::
Item_sum_avg_fix_length_and_dec(Item_sum_avg *item) const
{
item->fix_length_and_dec_double();
return false;
}
#ifdef HAVE_SPATIAL
bool Type_handler_geometry::
Item_sum_avg_fix_length_and_dec(Item_sum_avg *item) const
{
return Item_func_or_sum_illegal_param("avg");
}
#endif
/*************************************************************************/
bool Type_handler_int_result::
Item_sum_variance_fix_length_and_dec(Item_sum_variance *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_decimal_result::
Item_sum_variance_fix_length_and_dec(Item_sum_variance *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_sum_variance_fix_length_and_dec(Item_sum_variance *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_real_result::
Item_sum_variance_fix_length_and_dec(Item_sum_variance *item) const
{
item->fix_length_and_dec_double();
return false;
}
bool Type_handler_string_result::
Item_sum_variance_fix_length_and_dec(Item_sum_variance *item) const
{
item->fix_length_and_dec_double();
return false;
}
#ifdef HAVE_SPATIAL
bool Type_handler_geometry::
Item_sum_variance_fix_length_and_dec(Item_sum_variance *item) const
{
return Item_func_or_sum_illegal_param(item);
}
#endif
/*************************************************************************/
String *
Type_handler_real_result::Item_func_hex_val_str_ascii(Item_func_hex *item,
String *str) const
{
return item->val_str_ascii_from_val_real(str);
}
String *
Type_handler_decimal_result::Item_func_hex_val_str_ascii(Item_func_hex *item,
String *str) const
{
return item->val_str_ascii_from_val_real(str);
}
String *
Type_handler_int_result::Item_func_hex_val_str_ascii(Item_func_hex *item,
String *str) const
{
return item->val_str_ascii_from_val_int(str);
}
String *
Type_handler_temporal_result::Item_func_hex_val_str_ascii(Item_func_hex *item,
String *str) const
{
return item->val_str_ascii_from_val_str(str);
}
String *
Type_handler_string_result::Item_func_hex_val_str_ascii(Item_func_hex *item,
String *str) const
{
return item->val_str_ascii_from_val_str(str);
}
/***************************************************************************/
String *
Type_handler_decimal_result::Item_func_hybrid_field_type_val_str(
Item_func_hybrid_field_type *item,
String *str) const
{
return item->val_str_from_decimal_op(str);
}
double
Type_handler_decimal_result::Item_func_hybrid_field_type_val_real(
Item_func_hybrid_field_type *item)
const
{
return item->val_real_from_decimal_op();
}
longlong
Type_handler_decimal_result::Item_func_hybrid_field_type_val_int(
Item_func_hybrid_field_type *item)
const
{
return item->val_int_from_decimal_op();
}
my_decimal *
Type_handler_decimal_result::Item_func_hybrid_field_type_val_decimal(
Item_func_hybrid_field_type *item,
my_decimal *dec) const
{
return item->val_decimal_from_decimal_op(dec);
}
bool
Type_handler_decimal_result::Item_func_hybrid_field_type_get_date(
Item_func_hybrid_field_type *item,
MYSQL_TIME *ltime,
ulonglong fuzzydate) const
{
return item->get_date_from_decimal_op(ltime, fuzzydate);
}
/***************************************************************************/
String *
Type_handler_int_result::Item_func_hybrid_field_type_val_str(
Item_func_hybrid_field_type *item,
String *str) const
{
return item->val_str_from_int_op(str);
}
double
Type_handler_int_result::Item_func_hybrid_field_type_val_real(
Item_func_hybrid_field_type *item)
const
{
return item->val_real_from_int_op();
}
longlong
Type_handler_int_result::Item_func_hybrid_field_type_val_int(
Item_func_hybrid_field_type *item)
const
{
return item->val_int_from_int_op();
}
my_decimal *
Type_handler_int_result::Item_func_hybrid_field_type_val_decimal(
Item_func_hybrid_field_type *item,
my_decimal *dec) const
{
return item->val_decimal_from_int_op(dec);
}
bool
Type_handler_int_result::Item_func_hybrid_field_type_get_date(
Item_func_hybrid_field_type *item,
MYSQL_TIME *ltime,
ulonglong fuzzydate) const
{
return item->get_date_from_int_op(ltime, fuzzydate);
}
/***************************************************************************/
String *
Type_handler_real_result::Item_func_hybrid_field_type_val_str(
Item_func_hybrid_field_type *item,
String *str) const
{
return item->val_str_from_real_op(str);
}
double
Type_handler_real_result::Item_func_hybrid_field_type_val_real(
Item_func_hybrid_field_type *item)
const
{
return item->val_real_from_real_op();
}
longlong
Type_handler_real_result::Item_func_hybrid_field_type_val_int(
Item_func_hybrid_field_type *item)
const
{
return item->val_int_from_real_op();
}
my_decimal *
Type_handler_real_result::Item_func_hybrid_field_type_val_decimal(
Item_func_hybrid_field_type *item,
my_decimal *dec) const
{
return item->val_decimal_from_real_op(dec);
}
bool
Type_handler_real_result::Item_func_hybrid_field_type_get_date(
Item_func_hybrid_field_type *item,
MYSQL_TIME *ltime,
ulonglong fuzzydate) const
{
return item->get_date_from_real_op(ltime, fuzzydate);
}
/***************************************************************************/
String *
Type_handler_temporal_result::Item_func_hybrid_field_type_val_str(
Item_func_hybrid_field_type *item,
String *str) const
{
return item->val_str_from_date_op(str);
}
double
Type_handler_temporal_result::Item_func_hybrid_field_type_val_real(
Item_func_hybrid_field_type *item)
const
{
return item->val_real_from_date_op();
}
longlong
Type_handler_temporal_result::Item_func_hybrid_field_type_val_int(
Item_func_hybrid_field_type *item)
const
{
return item->val_int_from_date_op();
}
my_decimal *
Type_handler_temporal_result::Item_func_hybrid_field_type_val_decimal(
Item_func_hybrid_field_type *item,
my_decimal *dec) const
{
return item->val_decimal_from_date_op(dec);
}
bool
Type_handler_temporal_result::Item_func_hybrid_field_type_get_date(
Item_func_hybrid_field_type *item,
MYSQL_TIME *ltime,
ulonglong fuzzydate) const
{
return item->get_date_from_date_op(ltime, fuzzydate);
}
/***************************************************************************/
String *
Type_handler_string_result::Item_func_hybrid_field_type_val_str(
Item_func_hybrid_field_type *item,
String *str) const
{
return item->val_str_from_str_op(str);
}
double
Type_handler_string_result::Item_func_hybrid_field_type_val_real(
Item_func_hybrid_field_type *item)
const
{
return item->val_real_from_str_op();
}
longlong
Type_handler_string_result::Item_func_hybrid_field_type_val_int(
Item_func_hybrid_field_type *item)
const
{
return item->val_int_from_str_op();
}
my_decimal *
Type_handler_string_result::Item_func_hybrid_field_type_val_decimal(
Item_func_hybrid_field_type *item,
my_decimal *dec) const
{
return item->val_decimal_from_str_op(dec);
}
bool
Type_handler_string_result::Item_func_hybrid_field_type_get_date(
Item_func_hybrid_field_type *item,
MYSQL_TIME *ltime,
ulonglong fuzzydate) const
{
return item->get_date_from_str_op(ltime, fuzzydate);
}
/***************************************************************************/
longlong Type_handler_row::
Item_func_between_val_int(Item_func_between *func) const
{
DBUG_ASSERT(0);
func->null_value= true;
return 0;
}
longlong Type_handler_string_result::
Item_func_between_val_int(Item_func_between *func) const
{
return func->val_int_cmp_string();
}
longlong Type_handler_temporal_result::
Item_func_between_val_int(Item_func_between *func) const
{
return func->val_int_cmp_temporal();
}
longlong Type_handler_int_result::
Item_func_between_val_int(Item_func_between *func) const
{
return func->val_int_cmp_int();
}
longlong Type_handler_real_result::
Item_func_between_val_int(Item_func_between *func) const
{
return func->val_int_cmp_real();
}
longlong Type_handler_decimal_result::
Item_func_between_val_int(Item_func_between *func) const
{
return func->val_int_cmp_decimal();
}
/***************************************************************************/
cmp_item *Type_handler_int_result::make_cmp_item(THD *thd,
CHARSET_INFO *cs) const
{
return new (thd->mem_root) cmp_item_int;
}
cmp_item *Type_handler_real_result::make_cmp_item(THD *thd,
CHARSET_INFO *cs) const
{
return new (thd->mem_root) cmp_item_real;
}
cmp_item *Type_handler_decimal_result::make_cmp_item(THD *thd,
CHARSET_INFO *cs) const
{
return new (thd->mem_root) cmp_item_decimal;
}
cmp_item *Type_handler_string_result::make_cmp_item(THD *thd,
CHARSET_INFO *cs) const
{
return new (thd->mem_root) cmp_item_sort_string(cs);
}
cmp_item *Type_handler_row::make_cmp_item(THD *thd,
CHARSET_INFO *cs) const
{
return new (thd->mem_root) cmp_item_row;
}
cmp_item *Type_handler_time_common::make_cmp_item(THD *thd,
CHARSET_INFO *cs) const
{
return new (thd->mem_root) cmp_item_time;
}
cmp_item *Type_handler_temporal_with_date::make_cmp_item(THD *thd,
CHARSET_INFO *cs) const
{
return new (thd->mem_root) cmp_item_datetime;
}
/***************************************************************************/
static int srtcmp_in(CHARSET_INFO *cs, const String *x,const String *y)
{
return cs->coll->strnncollsp(cs,
(uchar *) x->ptr(),x->length(),
(uchar *) y->ptr(),y->length());
}
in_vector *Type_handler_string_result::make_in_vector(THD *thd,
const Item_func_in *func,
uint nargs) const
{
return new (thd->mem_root) in_string(thd, nargs, (qsort2_cmp) srtcmp_in,
func->compare_collation());
}
in_vector *Type_handler_int_result::make_in_vector(THD *thd,
const Item_func_in *func,
uint nargs) const
{
return new (thd->mem_root) in_longlong(thd, nargs);
}
in_vector *Type_handler_real_result::make_in_vector(THD *thd,
const Item_func_in *func,
uint nargs) const
{
return new (thd->mem_root) in_double(thd, nargs);
}
in_vector *Type_handler_decimal_result::make_in_vector(THD *thd,
const Item_func_in *func,
uint nargs) const
{
return new (thd->mem_root) in_decimal(thd, nargs);
}
in_vector *Type_handler_time_common::make_in_vector(THD *thd,
const Item_func_in *func,
uint nargs) const
{
return new (thd->mem_root) in_time(thd, nargs);
}
in_vector *
Type_handler_temporal_with_date::make_in_vector(THD *thd,
const Item_func_in *func,
uint nargs) const
{
return new (thd->mem_root) in_datetime(thd, nargs);
}
in_vector *Type_handler_row::make_in_vector(THD *thd,
const Item_func_in *func,
uint nargs) const
{
return new (thd->mem_root) in_row(thd, nargs, 0);
}
/***************************************************************************/
bool Type_handler_string_result::
Item_func_in_fix_comparator_compatible_types(THD *thd,
Item_func_in *func) const
{
if (func->agg_all_arg_charsets_for_comparison())
return true;
if (func->compatible_types_scalar_bisection_possible())
{
return func->value_list_convert_const_to_int(thd) ||
func->fix_for_scalar_comparison_using_bisection(thd);
}
return
func->fix_for_scalar_comparison_using_cmp_items(thd,
1U << (uint) STRING_RESULT);
}
bool Type_handler_int_result::
Item_func_in_fix_comparator_compatible_types(THD *thd,
Item_func_in *func) const
{
/*
Does not need to call value_list_convert_const_to_int()
as already handled by int handler.
*/
return func->compatible_types_scalar_bisection_possible() ?
func->fix_for_scalar_comparison_using_bisection(thd) :
func->fix_for_scalar_comparison_using_cmp_items(thd,
1U << (uint) INT_RESULT);
}
bool Type_handler_real_result::
Item_func_in_fix_comparator_compatible_types(THD *thd,
Item_func_in *func) const
{
return func->compatible_types_scalar_bisection_possible() ?
(func->value_list_convert_const_to_int(thd) ||
func->fix_for_scalar_comparison_using_bisection(thd)) :
func->fix_for_scalar_comparison_using_cmp_items(thd,
1U << (uint) REAL_RESULT);
}
bool Type_handler_decimal_result::
Item_func_in_fix_comparator_compatible_types(THD *thd,
Item_func_in *func) const
{
return func->compatible_types_scalar_bisection_possible() ?
(func->value_list_convert_const_to_int(thd) ||
func->fix_for_scalar_comparison_using_bisection(thd)) :
func->fix_for_scalar_comparison_using_cmp_items(thd,
1U << (uint) DECIMAL_RESULT);
}
bool Type_handler_temporal_result::
Item_func_in_fix_comparator_compatible_types(THD *thd,
Item_func_in *func) const
{
return func->compatible_types_scalar_bisection_possible() ?
(func->value_list_convert_const_to_int(thd) ||
func->fix_for_scalar_comparison_using_bisection(thd)) :
func->fix_for_scalar_comparison_using_cmp_items(thd,
1U << (uint) TIME_RESULT);
}
bool Type_handler_row::Item_func_in_fix_comparator_compatible_types(THD *thd,
Item_func_in *func) const
{
return func->compatible_types_row_bisection_possible() ?
func->fix_for_row_comparison_using_bisection(thd) :
func->fix_for_row_comparison_using_cmp_items(thd);
}
/***************************************************************************/
String *Type_handler_string_result::
Item_func_min_max_val_str(Item_func_min_max *func, String *str) const
{
return func->val_str_native(str);
}
String *Type_handler_temporal_result::
Item_func_min_max_val_str(Item_func_min_max *func, String *str) const
{
return func->val_string_from_date(str);
}
String *Type_handler_int_result::
Item_func_min_max_val_str(Item_func_min_max *func, String *str) const
{
return func->val_string_from_int(str);
}
String *Type_handler_decimal_result::
Item_func_min_max_val_str(Item_func_min_max *func, String *str) const
{
return func->val_string_from_decimal(str);
}
String *Type_handler_real_result::
Item_func_min_max_val_str(Item_func_min_max *func, String *str) const
{
return func->val_string_from_real(str);
}
double Type_handler_string_result::
Item_func_min_max_val_real(Item_func_min_max *func) const
{
return func->val_real_native();
}
double Type_handler_temporal_result::
Item_func_min_max_val_real(Item_func_min_max *func) const
{
MYSQL_TIME ltime;
if (func->get_date(&ltime, 0))
return 0;
return TIME_to_double(&ltime);
}
double Type_handler_numeric::
Item_func_min_max_val_real(Item_func_min_max *func) const
{
return func->val_real_native();
}
longlong Type_handler_string_result::
Item_func_min_max_val_int(Item_func_min_max *func) const
{
return func->val_int_native();
}
longlong Type_handler_temporal_result::
Item_func_min_max_val_int(Item_func_min_max *func) const
{
MYSQL_TIME ltime;
if (func->get_date(&ltime, 0))
return 0;
return TIME_to_ulonglong(&ltime);
}
longlong Type_handler_numeric::
Item_func_min_max_val_int(Item_func_min_max *func) const
{
return func->val_int_native();
}
my_decimal *Type_handler_string_result::
Item_func_min_max_val_decimal(Item_func_min_max *func,
my_decimal *dec) const
{
return func->val_decimal_native(dec);
}
my_decimal *Type_handler_numeric::
Item_func_min_max_val_decimal(Item_func_min_max *func,
my_decimal *dec) const
{
return func->val_decimal_native(dec);
}
my_decimal *Type_handler_temporal_result::
Item_func_min_max_val_decimal(Item_func_min_max *func,
my_decimal *dec) const
{
MYSQL_TIME ltime;
if (func->get_date(&ltime, 0))
return 0;
return date2my_decimal(&ltime, dec);
}
bool Type_handler_string_result::
Item_func_min_max_get_date(Item_func_min_max *func,
MYSQL_TIME *ltime, ulonglong fuzzydate) const
{
/*
just like ::val_int() method of a string item can be called,
for example, SELECT CONCAT("10", "12") + 1,
::get_date() can be called for non-temporal values,
for example, SELECT MONTH(GREATEST("2011-11-21", "2010-10-09"))
*/
return func->Item::get_date(ltime, fuzzydate);
}
bool Type_handler_numeric::
Item_func_min_max_get_date(Item_func_min_max *func,
MYSQL_TIME *ltime, ulonglong fuzzydate) const
{
return func->Item::get_date(ltime, fuzzydate);
}
bool Type_handler_temporal_result::
Item_func_min_max_get_date(Item_func_min_max *func,
MYSQL_TIME *ltime, ulonglong fuzzydate) const
{
return func->get_date_native(ltime, fuzzydate);
}
/***************************************************************************/
/**
Get a string representation of the Item value.
See sql_type.h for details.
*/
String *Type_handler_row::
print_item_value(THD *thd, Item *item, String *str) const
{
CHARSET_INFO *cs= thd->variables.character_set_client;
StringBuffer<STRING_BUFFER_USUAL_SIZE> val(cs);
str->append(C_STRING_WITH_LEN("ROW("));
for (uint i= 0 ; i < item->cols(); i++)
{
if (i > 0)
str->append(',');
Item *elem= item->element_index(i);
String *tmp= elem->type_handler()->print_item_value(thd, elem, &val);
if (tmp)
str->append(*tmp);
else
str->append(STRING_WITH_LEN("NULL"));
}
str->append(C_STRING_WITH_LEN(")"));
return str;
}
/**
Get a string representation of the Item value,
using the character string format with its charset and collation, e.g.
latin1 'string' COLLATE latin1_german2_ci
*/
String *Type_handler::
print_item_value_csstr(THD *thd, Item *item, String *str) const
{
String *result= item->val_str(str);
if (!result)
return NULL;
StringBuffer<STRING_BUFFER_USUAL_SIZE> buf(result->charset());
CHARSET_INFO *cs= thd->variables.character_set_client;
buf.append('_');
buf.append(result->charset()->csname);
if (cs->escape_with_backslash_is_dangerous)
buf.append(' ');
append_query_string(cs, &buf, result->ptr(), result->length(),
thd->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES);
buf.append(" COLLATE '");
buf.append(item->collation.collation->name);
buf.append('\'');
str->copy(buf);
return str;
}
String *Type_handler_numeric::
print_item_value(THD *thd, Item *item, String *str) const
{
return item->val_str(str);
}
String *Type_handler::
print_item_value_temporal(THD *thd, Item *item, String *str,
const Name &type_name, String *buf) const
{
String *result= item->val_str(buf);
return !result ||
str->realloc(type_name.length() + result->length() + 2) ||
str->copy(type_name.ptr(), type_name.length(), &my_charset_latin1) ||
str->append('\'') ||
str->append(result->ptr(), result->length()) ||
str->append('\'') ?
NULL :
str;
}
String *Type_handler_time_common::
print_item_value(THD *thd, Item *item, String *str) const
{
StringBuffer<MAX_TIME_FULL_WIDTH+1> buf;
return print_item_value_temporal(thd, item, str,
Name(C_STRING_WITH_LEN("TIME")), &buf);
}
String *Type_handler_date_common::
print_item_value(THD *thd, Item *item, String *str) const
{
StringBuffer<MAX_DATE_WIDTH+1> buf;
return print_item_value_temporal(thd, item, str,
Name(C_STRING_WITH_LEN("DATE")), &buf);
}
String *Type_handler_datetime_common::
print_item_value(THD *thd, Item *item, String *str) const
{
StringBuffer<MAX_DATETIME_FULL_WIDTH+1> buf;
return print_item_value_temporal(thd, item, str,
Name(C_STRING_WITH_LEN("TIMESTAMP")), &buf);
}
String *Type_handler_timestamp_common::
print_item_value(THD *thd, Item *item, String *str) const
{
StringBuffer<MAX_DATETIME_FULL_WIDTH+1> buf;
return print_item_value_temporal(thd, item, str,
Name(C_STRING_WITH_LEN("TIMESTAMP")), &buf);
}
/***************************************************************************/
bool Type_handler_row::
Item_func_round_fix_length_and_dec(Item_func_round *item) const
{
DBUG_ASSERT(0);
return false;
}
bool Type_handler_int_result::
Item_func_round_fix_length_and_dec(Item_func_round *item) const
{
item->fix_arg_int();
return false;
}
bool Type_handler_real_result::
Item_func_round_fix_length_and_dec(Item_func_round *item) const
{
item->fix_arg_double();
return false;
}
bool Type_handler_decimal_result::
Item_func_round_fix_length_and_dec(Item_func_round *item) const
{
item->fix_arg_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_func_round_fix_length_and_dec(Item_func_round *item) const
{
item->fix_arg_double();
return false;
}
bool Type_handler_string_result::
Item_func_round_fix_length_and_dec(Item_func_round *item) const
{
item->fix_arg_double();
return false;
}
#ifdef HAVE_SPATIAL
bool Type_handler_geometry::
Item_func_round_fix_length_and_dec(Item_func_round *item) const
{
return Item_func_or_sum_illegal_param(item);
}
#endif
/***************************************************************************/
bool Type_handler_row::
Item_func_int_val_fix_length_and_dec(Item_func_int_val *item) const
{
DBUG_ASSERT(0);
return false;
}
bool Type_handler_int_result::
Item_func_int_val_fix_length_and_dec(Item_func_int_val *item) const
{
item->fix_length_and_dec_int_or_decimal();
return false;
}
bool Type_handler_real_result::
Item_func_int_val_fix_length_and_dec(Item_func_int_val *item) const
{
item->fix_length_and_dec_double();
return false;
}
bool Type_handler_decimal_result::
Item_func_int_val_fix_length_and_dec(Item_func_int_val *item) const
{
item->fix_length_and_dec_int_or_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_func_int_val_fix_length_and_dec(Item_func_int_val *item) const
{
item->fix_length_and_dec_int_or_decimal();
return false;
}
bool Type_handler_string_result::
Item_func_int_val_fix_length_and_dec(Item_func_int_val *item) const
{
item->fix_length_and_dec_double();
return false;
}
#ifdef HAVE_SPATIAL
bool Type_handler_geometry::
Item_func_int_val_fix_length_and_dec(Item_func_int_val *item) const
{
return Item_func_or_sum_illegal_param(item);
}
#endif
/***************************************************************************/
bool Type_handler_row::
Item_func_abs_fix_length_and_dec(Item_func_abs *item) const
{
DBUG_ASSERT(0);
return false;
}
bool Type_handler_int_result::
Item_func_abs_fix_length_and_dec(Item_func_abs *item) const
{
item->fix_length_and_dec_int();
return false;
}
bool Type_handler_real_result::
Item_func_abs_fix_length_and_dec(Item_func_abs *item) const
{
item->fix_length_and_dec_double();
return false;
}
bool Type_handler_decimal_result::
Item_func_abs_fix_length_and_dec(Item_func_abs *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_func_abs_fix_length_and_dec(Item_func_abs *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_string_result::
Item_func_abs_fix_length_and_dec(Item_func_abs *item) const
{
item->fix_length_and_dec_double();
return false;
}
#ifdef HAVE_SPATIAL
bool Type_handler_geometry::
Item_func_abs_fix_length_and_dec(Item_func_abs *item) const
{
return Item_func_or_sum_illegal_param(item);
}
#endif
/***************************************************************************/
bool Type_handler_row::
Item_func_neg_fix_length_and_dec(Item_func_neg *item) const
{
DBUG_ASSERT(0);
return false;
}
bool Type_handler_int_result::
Item_func_neg_fix_length_and_dec(Item_func_neg *item) const
{
item->fix_length_and_dec_int();
return false;
}
bool Type_handler_real_result::
Item_func_neg_fix_length_and_dec(Item_func_neg *item) const
{
item->fix_length_and_dec_double();
return false;
}
bool Type_handler_decimal_result::
Item_func_neg_fix_length_and_dec(Item_func_neg *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_func_neg_fix_length_and_dec(Item_func_neg *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_string_result::
Item_func_neg_fix_length_and_dec(Item_func_neg *item) const
{
item->fix_length_and_dec_double();
return false;
}
#ifdef HAVE_SPATIAL
bool Type_handler_geometry::
Item_func_neg_fix_length_and_dec(Item_func_neg *item) const
{
return Item_func_or_sum_illegal_param(item);
}
#endif
/***************************************************************************/
bool Type_handler::
Item_func_signed_fix_length_and_dec(Item_func_signed *item) const
{
item->fix_length_and_dec_generic();
return false;
}
bool Type_handler::
Item_func_unsigned_fix_length_and_dec(Item_func_unsigned *item) const
{
item->fix_length_and_dec_generic();
return false;
}
bool Type_handler::
Item_double_typecast_fix_length_and_dec(Item_double_typecast *item) const
{
item->fix_length_and_dec_generic();
return false;
}
bool Type_handler::
Item_decimal_typecast_fix_length_and_dec(Item_decimal_typecast *item) const
{
item->fix_length_and_dec_generic();
return false;
}
bool Type_handler::
Item_char_typecast_fix_length_and_dec(Item_char_typecast *item) const
{
item->fix_length_and_dec_str();
return false;
}
bool Type_handler_numeric::
Item_char_typecast_fix_length_and_dec(Item_char_typecast *item) const
{
item->fix_length_and_dec_numeric();
return false;
}
bool Type_handler::
Item_time_typecast_fix_length_and_dec(Item_time_typecast *item) const
{
item->fix_length_and_dec_generic(MIN_TIME_WIDTH);
return false;
}
bool Type_handler::
Item_date_typecast_fix_length_and_dec(Item_date_typecast *item) const
{
item->fix_length_and_dec_generic(MAX_DATE_WIDTH);
return false;
}
bool Type_handler::
Item_datetime_typecast_fix_length_and_dec(Item_datetime_typecast *item)
const
{
item->fix_length_and_dec_generic(MAX_DATETIME_WIDTH);
return false;
}
#ifdef HAVE_SPATIAL
bool Type_handler_geometry::
Item_func_signed_fix_length_and_dec(Item_func_signed *item) const
{
return Item_func_or_sum_illegal_param(item);
}
bool Type_handler_geometry::
Item_func_unsigned_fix_length_and_dec(Item_func_unsigned *item) const
{
return Item_func_or_sum_illegal_param(item);
}
bool Type_handler_geometry::
Item_double_typecast_fix_length_and_dec(Item_double_typecast *item) const
{
return Item_func_or_sum_illegal_param(item);
}
bool Type_handler_geometry::
Item_decimal_typecast_fix_length_and_dec(Item_decimal_typecast *item) const
{
return Item_func_or_sum_illegal_param(item);
}
bool Type_handler_geometry::
Item_char_typecast_fix_length_and_dec(Item_char_typecast *item) const
{
if (item->cast_charset() != &my_charset_bin)
return Item_func_or_sum_illegal_param(item); // CAST(geom AS CHAR)
item->fix_length_and_dec_str();
return false; // CAST(geom AS BINARY)
}
bool Type_handler_geometry::
Item_time_typecast_fix_length_and_dec(Item_time_typecast *item) const
{
return Item_func_or_sum_illegal_param(item);
}
bool Type_handler_geometry::
Item_date_typecast_fix_length_and_dec(Item_date_typecast *item) const
{
return Item_func_or_sum_illegal_param(item);
}
bool Type_handler_geometry::
Item_datetime_typecast_fix_length_and_dec(Item_datetime_typecast *item)
const
{
return Item_func_or_sum_illegal_param(item);
}
#endif /* HAVE_SPATIAL */
/***************************************************************************/
bool Type_handler_row::
Item_func_plus_fix_length_and_dec(Item_func_plus *item) const
{
DBUG_ASSERT(0);
return true;
}
bool Type_handler_int_result::
Item_func_plus_fix_length_and_dec(Item_func_plus *item) const
{
item->fix_length_and_dec_int();
return false;
}
bool Type_handler_real_result::
Item_func_plus_fix_length_and_dec(Item_func_plus *item) const
{
item->fix_length_and_dec_double();
return false;
}
bool Type_handler_decimal_result::
Item_func_plus_fix_length_and_dec(Item_func_plus *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_func_plus_fix_length_and_dec(Item_func_plus *item) const
{
item->fix_length_and_dec_temporal();
return false;
}
bool Type_handler_string_result::
Item_func_plus_fix_length_and_dec(Item_func_plus *item) const
{
item->fix_length_and_dec_double();
return false;
}
/***************************************************************************/
bool Type_handler_row::
Item_func_minus_fix_length_and_dec(Item_func_minus *item) const
{
DBUG_ASSERT(0);
return true;
}
bool Type_handler_int_result::
Item_func_minus_fix_length_and_dec(Item_func_minus *item) const
{
item->fix_length_and_dec_int();
return false;
}
bool Type_handler_real_result::
Item_func_minus_fix_length_and_dec(Item_func_minus *item) const
{
item->fix_length_and_dec_double();
return false;
}
bool Type_handler_decimal_result::
Item_func_minus_fix_length_and_dec(Item_func_minus *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_func_minus_fix_length_and_dec(Item_func_minus *item) const
{
item->fix_length_and_dec_temporal();
return false;
}
bool Type_handler_string_result::
Item_func_minus_fix_length_and_dec(Item_func_minus *item) const
{
item->fix_length_and_dec_double();
return false;
}
/***************************************************************************/
bool Type_handler_row::
Item_func_mul_fix_length_and_dec(Item_func_mul *item) const
{
DBUG_ASSERT(0);
return true;
}
bool Type_handler_int_result::
Item_func_mul_fix_length_and_dec(Item_func_mul *item) const
{
item->fix_length_and_dec_int();
return false;
}
bool Type_handler_real_result::
Item_func_mul_fix_length_and_dec(Item_func_mul *item) const
{
item->fix_length_and_dec_double();
return false;
}
bool Type_handler_decimal_result::
Item_func_mul_fix_length_and_dec(Item_func_mul *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_func_mul_fix_length_and_dec(Item_func_mul *item) const
{
item->fix_length_and_dec_temporal();
return false;
}
bool Type_handler_string_result::
Item_func_mul_fix_length_and_dec(Item_func_mul *item) const
{
item->fix_length_and_dec_double();
return false;
}
/***************************************************************************/
bool Type_handler_row::
Item_func_div_fix_length_and_dec(Item_func_div *item) const
{
DBUG_ASSERT(0);
return true;
}
bool Type_handler_int_result::
Item_func_div_fix_length_and_dec(Item_func_div *item) const
{
item->fix_length_and_dec_int();
return false;
}
bool Type_handler_real_result::
Item_func_div_fix_length_and_dec(Item_func_div *item) const
{
item->fix_length_and_dec_double();
return false;
}
bool Type_handler_decimal_result::
Item_func_div_fix_length_and_dec(Item_func_div *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_func_div_fix_length_and_dec(Item_func_div *item) const
{
item->fix_length_and_dec_temporal();
return false;
}
bool Type_handler_string_result::
Item_func_div_fix_length_and_dec(Item_func_div *item) const
{
item->fix_length_and_dec_double();
return false;
}
/***************************************************************************/
bool Type_handler_row::
Item_func_mod_fix_length_and_dec(Item_func_mod *item) const
{
DBUG_ASSERT(0);
return true;
}
bool Type_handler_int_result::
Item_func_mod_fix_length_and_dec(Item_func_mod *item) const
{
item->fix_length_and_dec_int();
return false;
}
bool Type_handler_real_result::
Item_func_mod_fix_length_and_dec(Item_func_mod *item) const
{
item->fix_length_and_dec_double();
return false;
}
bool Type_handler_decimal_result::
Item_func_mod_fix_length_and_dec(Item_func_mod *item) const
{
item->fix_length_and_dec_decimal();
return false;
}
bool Type_handler_temporal_result::
Item_func_mod_fix_length_and_dec(Item_func_mod *item) const
{
item->fix_length_and_dec_temporal();
return false;
}
bool Type_handler_string_result::
Item_func_mod_fix_length_and_dec(Item_func_mod *item) const
{
item->fix_length_and_dec_double();
return false;
}
/***************************************************************************/
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