mirror of
https://github.com/MariaDB/server.git
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4d9c5844b8
The code in Type_handler_blob****::make_conversion_table_field() erroneously assumed that row format replication uses MYSQL_TYPE_TINYBLOB, MYSQL_TYPE_BLOB, MYSQL_TYPE_MEDIUMBLOB, MYSQL_TYPE_LONGBLOB type codes to tranfer BLOB variations. In fact, all BLOB variations use MYSQL_TYPE_BLOB as the type code, while the BLOB packlength (1,2,3 or 4) it tranferred in metadata. The bug was introduced by aee068085ddb13f700780eeb61fce29c1e37df63 (MDEV-9238 Wrap create_virtual_tmp_table() into a class, split into different steps)
613 lines
25 KiB
C++
613 lines
25 KiB
C++
/*
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Copyright (c) 2015 MariaDB Foundation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "sql_type.h"
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#include "sql_const.h"
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#include "sql_class.h"
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#include "item.h"
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#include "log.h"
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static Type_handler_tiny type_handler_tiny;
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static Type_handler_short type_handler_short;
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static Type_handler_long type_handler_long;
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static Type_handler_longlong type_handler_longlong;
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static Type_handler_int24 type_handler_int24;
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static Type_handler_year type_handler_year;
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static Type_handler_bit type_handler_bit;
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static Type_handler_float type_handler_float;
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static Type_handler_double type_handler_double;
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static Type_handler_time type_handler_time;
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static Type_handler_time2 type_handler_time2;
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static Type_handler_date type_handler_date;
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static Type_handler_newdate type_handler_newdate;
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static Type_handler_datetime type_handler_datetime;
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static Type_handler_datetime2 type_handler_datetime2;
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static Type_handler_timestamp type_handler_timestamp;
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static Type_handler_timestamp2 type_handler_timestamp2;
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static Type_handler_olddecimal type_handler_olddecimal;
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static Type_handler_newdecimal type_handler_newdecimal;
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static Type_handler_null type_handler_null;
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static Type_handler_string type_handler_string;
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static Type_handler_varchar type_handler_varchar;
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static Type_handler_tiny_blob type_handler_tiny_blob;
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static Type_handler_medium_blob type_handler_medium_blob;
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static Type_handler_long_blob type_handler_long_blob;
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static Type_handler_blob type_handler_blob;
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#ifdef HAVE_SPATIAL
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static Type_handler_geometry type_handler_geometry;
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#endif
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static Type_handler_enum type_handler_enum;
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static Type_handler_set type_handler_set;
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/**
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This method is used by:
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- Item_user_var_as_out_param::field_type()
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- Item_func_udf_str::field_type()
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- Item_empty_string::make_field()
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TODO: type_handler_adjusted_to_max_octet_length() and string_type_handler()
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provide very similar functionality, to properly choose between
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VARCHAR/VARBINARY vs TEXT/BLOB variations taking into accoung maximum
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possible octet length.
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We should probably get rid of either of them and use the same method
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all around the code.
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*/
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const Type_handler *
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Type_handler::string_type_handler(uint max_octet_length) const
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{
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if (max_octet_length >= 16777216)
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return &type_handler_long_blob;
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else if (max_octet_length >= 65536)
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return &type_handler_medium_blob;
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return &type_handler_varchar;
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}
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/**
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This method is used by:
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- Item_sum_hybrid, e.g. MAX(item), MIN(item).
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- Item_func_set_user_var
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*/
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const Type_handler *
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Type_handler_string_result::type_handler_adjusted_to_max_octet_length(
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uint max_octet_length,
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CHARSET_INFO *cs) const
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{
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if (max_octet_length / cs->mbmaxlen <= CONVERT_IF_BIGGER_TO_BLOB)
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return &type_handler_varchar; // See also Item::too_big_for_varchar()
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if (max_octet_length >= 16777216)
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return &type_handler_long_blob;
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else if (max_octet_length >= 65536)
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return &type_handler_medium_blob;
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return &type_handler_blob;
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}
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const Type_handler *
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Type_handler_hybrid_field_type::get_handler_by_result_type(Item_result type)
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const
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{
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switch (type) {
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case REAL_RESULT: return &type_handler_double;
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case INT_RESULT: return &type_handler_longlong;
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case DECIMAL_RESULT: return &type_handler_newdecimal;
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case STRING_RESULT: return &type_handler_long_blob;
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case TIME_RESULT:
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case ROW_RESULT:
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DBUG_ASSERT(0);
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}
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return &type_handler_string;
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}
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Type_handler_hybrid_field_type::Type_handler_hybrid_field_type()
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:m_type_handler(&type_handler_double)
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{
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}
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const Type_handler *
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Type_handler::get_handler_by_field_type(enum_field_types type)
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{
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switch (type) {
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case MYSQL_TYPE_DECIMAL: return &type_handler_olddecimal;
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case MYSQL_TYPE_NEWDECIMAL: return &type_handler_newdecimal;
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case MYSQL_TYPE_TINY: return &type_handler_tiny;
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case MYSQL_TYPE_SHORT: return &type_handler_short;
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case MYSQL_TYPE_LONG: return &type_handler_long;
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case MYSQL_TYPE_LONGLONG: return &type_handler_longlong;
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case MYSQL_TYPE_INT24: return &type_handler_int24;
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case MYSQL_TYPE_YEAR: return &type_handler_year;
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case MYSQL_TYPE_BIT: return &type_handler_bit;
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case MYSQL_TYPE_FLOAT: return &type_handler_float;
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case MYSQL_TYPE_DOUBLE: return &type_handler_double;
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case MYSQL_TYPE_NULL: return &type_handler_null;
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case MYSQL_TYPE_VARCHAR: return &type_handler_varchar;
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case MYSQL_TYPE_TINY_BLOB: return &type_handler_tiny_blob;
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case MYSQL_TYPE_MEDIUM_BLOB: return &type_handler_medium_blob;
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case MYSQL_TYPE_LONG_BLOB: return &type_handler_long_blob;
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case MYSQL_TYPE_BLOB: return &type_handler_blob;
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case MYSQL_TYPE_VAR_STRING: return &type_handler_varchar; // Map to VARCHAR
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case MYSQL_TYPE_STRING: return &type_handler_string;
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case MYSQL_TYPE_ENUM: return &type_handler_varchar; // Map to VARCHAR
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case MYSQL_TYPE_SET: return &type_handler_varchar; // Map to VARCHAR
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case MYSQL_TYPE_GEOMETRY:
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#ifdef HAVE_SPATIAL
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return &type_handler_geometry;
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#else
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return NULL;
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#endif
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case MYSQL_TYPE_TIMESTAMP: return &type_handler_timestamp2;// Map to timestamp2
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case MYSQL_TYPE_TIMESTAMP2: return &type_handler_timestamp2;
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case MYSQL_TYPE_DATE: return &type_handler_newdate; // Map to newdate
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case MYSQL_TYPE_TIME: return &type_handler_time2; // Map to time2
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case MYSQL_TYPE_TIME2: return &type_handler_time2;
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case MYSQL_TYPE_DATETIME: return &type_handler_datetime2; // Map to datetime2
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case MYSQL_TYPE_DATETIME2: return &type_handler_datetime2;
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case MYSQL_TYPE_NEWDATE:
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/*
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NEWDATE is actually a real_type(), not a field_type(),
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but it's used around the code in field_type() context.
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We should probably clean up the code not to use MYSQL_TYPE_NEWDATE
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in field_type() context and add DBUG_ASSERT(0) here.
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*/
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return &type_handler_newdate;
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};
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DBUG_ASSERT(0);
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return &type_handler_string;
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}
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const Type_handler *
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Type_handler::get_handler_by_real_type(enum_field_types type)
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{
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switch (type) {
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case MYSQL_TYPE_DECIMAL: return &type_handler_olddecimal;
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case MYSQL_TYPE_NEWDECIMAL: return &type_handler_newdecimal;
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case MYSQL_TYPE_TINY: return &type_handler_tiny;
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case MYSQL_TYPE_SHORT: return &type_handler_short;
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case MYSQL_TYPE_LONG: return &type_handler_long;
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case MYSQL_TYPE_LONGLONG: return &type_handler_longlong;
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case MYSQL_TYPE_INT24: return &type_handler_int24;
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case MYSQL_TYPE_YEAR: return &type_handler_year;
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case MYSQL_TYPE_BIT: return &type_handler_bit;
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case MYSQL_TYPE_FLOAT: return &type_handler_float;
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case MYSQL_TYPE_DOUBLE: return &type_handler_double;
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case MYSQL_TYPE_NULL: return &type_handler_null;
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case MYSQL_TYPE_VARCHAR: return &type_handler_varchar;
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case MYSQL_TYPE_TINY_BLOB: return &type_handler_tiny_blob;
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case MYSQL_TYPE_MEDIUM_BLOB: return &type_handler_medium_blob;
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case MYSQL_TYPE_LONG_BLOB: return &type_handler_long_blob;
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case MYSQL_TYPE_BLOB: return &type_handler_blob;
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case MYSQL_TYPE_VAR_STRING:
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/*
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VAR_STRING is actually a field_type(), not a real_type(),
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but it's used around the code in real_type() context.
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We should clean up the code and add DBUG_ASSERT(0) here.
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*/
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return &type_handler_string;
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case MYSQL_TYPE_STRING: return &type_handler_string;
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case MYSQL_TYPE_ENUM: return &type_handler_enum;
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case MYSQL_TYPE_SET: return &type_handler_set;
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case MYSQL_TYPE_GEOMETRY:
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#ifdef HAVE_SPATIAL
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return &type_handler_geometry;
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#else
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return NULL;
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#endif
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case MYSQL_TYPE_TIMESTAMP: return &type_handler_timestamp;
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case MYSQL_TYPE_TIMESTAMP2: return &type_handler_timestamp2;
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case MYSQL_TYPE_DATE: return &type_handler_date;
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case MYSQL_TYPE_TIME: return &type_handler_time;
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case MYSQL_TYPE_TIME2: return &type_handler_time2;
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case MYSQL_TYPE_DATETIME: return &type_handler_datetime;
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case MYSQL_TYPE_DATETIME2: return &type_handler_datetime2;
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case MYSQL_TYPE_NEWDATE: return &type_handler_newdate;
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};
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DBUG_ASSERT(0);
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return &type_handler_string;
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}
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/**
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Create a DOUBLE field by default.
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*/
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Field *
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Type_handler::make_num_distinct_aggregator_field(MEM_ROOT *mem_root,
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const Item *item) const
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{
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return new(mem_root)
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Field_double(NULL, item->max_length,
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(uchar *) (item->maybe_null ? "" : 0),
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item->maybe_null ? 1 : 0, Field::NONE,
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item->name, item->decimals, 0, item->unsigned_flag);
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}
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Field *
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Type_handler_float::make_num_distinct_aggregator_field(MEM_ROOT *mem_root,
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const Item *item)
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const
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{
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return new(mem_root)
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Field_float(NULL, item->max_length,
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(uchar *) (item->maybe_null ? "" : 0),
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item->maybe_null ? 1 : 0, Field::NONE,
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item->name, item->decimals, 0, item->unsigned_flag);
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}
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Field *
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Type_handler_decimal_result::make_num_distinct_aggregator_field(
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MEM_ROOT *mem_root,
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const Item *item)
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const
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{
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DBUG_ASSERT(item->decimals <= DECIMAL_MAX_SCALE);
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return new (mem_root)
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Field_new_decimal(NULL, item->max_length,
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(uchar *) (item->maybe_null ? "" : 0),
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item->maybe_null ? 1 : 0, Field::NONE,
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item->name, item->decimals, 0, item->unsigned_flag);
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}
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Field *
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Type_handler_int_result::make_num_distinct_aggregator_field(MEM_ROOT *mem_root,
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const Item *item)
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const
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{
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/**
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Make a longlong field for all INT-alike types. It could create
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smaller fields for TINYINT, SMALLINT, MEDIUMINT, INT though.
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*/
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return new(mem_root)
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Field_longlong(NULL, item->max_length,
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(uchar *) (item->maybe_null ? "" : 0),
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item->maybe_null ? 1 : 0, Field::NONE,
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item->name, 0, item->unsigned_flag);
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}
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/***********************************************************************/
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#define TMPNAME ""
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Field *Type_handler_tiny::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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/*
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As we don't know if the integer was signed or not on the master,
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assume we have same sign on master and slave. This is true when not
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using conversions so it should be true also when using conversions.
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*/
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bool unsigned_flag= ((Field_num*) target)->unsigned_flag;
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return new (table->in_use->mem_root)
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Field_tiny(NULL, 4 /*max_length*/, (uchar *) "", 1, Field::NONE,
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TMPNAME, 0/*zerofill*/, unsigned_flag);
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}
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Field *Type_handler_short::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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bool unsigned_flag= ((Field_num*) target)->unsigned_flag;
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return new (table->in_use->mem_root)
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Field_short(NULL, 6 /*max_length*/, (uchar *) "", 1, Field::NONE,
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TMPNAME, 0/*zerofill*/, unsigned_flag);
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}
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Field *Type_handler_int24::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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bool unsigned_flag= ((Field_num*) target)->unsigned_flag;
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return new (table->in_use->mem_root)
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Field_medium(NULL, 9 /*max_length*/, (uchar *) "", 1, Field::NONE,
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TMPNAME, 0/*zerofill*/, unsigned_flag);
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}
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Field *Type_handler_long::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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bool unsigned_flag= ((Field_num*) target)->unsigned_flag;
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return new (table->in_use->mem_root)
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Field_long(NULL, 11 /*max_length*/, (uchar *) "", 1, Field::NONE,
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TMPNAME, 0/*zerofill*/, unsigned_flag);
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}
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Field *Type_handler_longlong::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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bool unsigned_flag= ((Field_num*) target)->unsigned_flag;
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return new (table->in_use->mem_root)
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Field_longlong(NULL, 20 /*max_length*/,(uchar *) "", 1, Field::NONE,
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TMPNAME, 0/*zerofill*/, unsigned_flag);
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}
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Field *Type_handler_float::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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return new (table->in_use->mem_root)
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Field_float(NULL, 12 /*max_length*/, (uchar *) "", 1, Field::NONE,
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TMPNAME, 0/*dec*/, 0/*zerofill*/, 0/*unsigned_flag*/);
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}
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Field *Type_handler_double::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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return new (table->in_use->mem_root)
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Field_double(NULL, 22 /*max_length*/, (uchar *) "", 1, Field::NONE,
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TMPNAME, 0/*dec*/, 0/*zerofill*/, 0/*unsigned_flag*/);
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}
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Field *Type_handler_newdecimal::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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int precision= metadata >> 8;
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uint decimals= metadata & 0x00ff;
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uint32 max_length= my_decimal_precision_to_length(precision, decimals, false);
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DBUG_ASSERT(decimals <= DECIMAL_MAX_SCALE);
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return new (table->in_use->mem_root)
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Field_new_decimal(NULL, max_length, (uchar *) "", 1, Field::NONE,
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TMPNAME, decimals, 0/*zerofill*/, 0/*unsigned*/);
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}
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Field *Type_handler_olddecimal::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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sql_print_error("In RBR mode, Slave received incompatible DECIMAL field "
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"(old-style decimal field) from Master while creating "
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"conversion table. Please consider changing datatype on "
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"Master to new style decimal by executing ALTER command for"
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" column Name: %s.%s.%s.",
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target->table->s->db.str,
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target->table->s->table_name.str,
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target->field_name);
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return NULL;
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}
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Field *Type_handler_year::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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return new(table->in_use->mem_root)
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Field_year(NULL, 4, (uchar *) "", 1, Field::NONE, TMPNAME);
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}
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Field *Type_handler_null::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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return new(table->in_use->mem_root)
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Field_null(NULL, 0, Field::NONE, TMPNAME, target->charset());
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}
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Field *Type_handler_timestamp::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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return new_Field_timestamp(table->in_use->mem_root, NULL, (uchar *) "", 1,
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Field::NONE, TMPNAME, table->s, target->decimals());
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}
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Field *Type_handler_timestamp2::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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return new(table->in_use->mem_root)
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Field_timestampf(NULL, (uchar *) "", 1, Field::NONE,
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TMPNAME, table->s, metadata);
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}
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Field *Type_handler_newdate::make_conversion_table_field(TABLE *table,
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uint metadata,
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const Field *target)
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const
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{
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return new(table->in_use->mem_root)
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Field_newdate(NULL, (uchar *) "", 1, Field::NONE, TMPNAME);
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}
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|
|
|
|
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);
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|
}
|
|
|
|
|
|
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);
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|
}
|
|
|
|
|
|
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_blob_common::make_conversion_table_field(TABLE *table,
|
|
uint metadata,
|
|
const Field *target)
|
|
const
|
|
{
|
|
uint pack_length= metadata & 0x00ff;
|
|
if (pack_length < 1 || pack_length > 4)
|
|
return NULL; // Broken binary log?
|
|
return new(table->in_use->mem_root)
|
|
Field_blob(NULL, (uchar *) "", 1, Field::NONE, TMPNAME,
|
|
table->s, pack_length, target->charset());
|
|
}
|
|
|
|
|
|
#ifdef HAVE_SPATIAL
|
|
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());
|
|
}
|