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5.5 merge

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This commit is contained in:
Sergei Golubchik
2013-01-29 15:10:47 +01:00
parent cf20de000b 52fbe44fbb
commit 0af4b6c6ee
372 changed files with 11040 additions and 2969 deletions
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73
sql/item_func.h
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@@ -1,7 +1,7 @@
#ifndef ITEM_FUNC_INCLUDED
#define ITEM_FUNC_INCLUDED
/* Copyright (c) 2000, 2011, Oracle and/or its affiliates.
Copyright (c) 2009-2011 Monty Program Ab
Copyright (c) 2009, 2013, Monty Program Ab.
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
@@ -39,6 +39,8 @@ protected:
0 means get this number from first argument
*/
uint allowed_arg_cols;
/* maybe_null can't be changed by parameters or used table state */
bool persistent_maybe_null;
public:
uint arg_count;
table_map used_tables_cache, not_null_tables_cache;
@@ -64,13 +66,13 @@ public:
enum Type type() const { return FUNC_ITEM; }
virtual enum Functype functype() const { return UNKNOWN_FUNC; }
Item_func(void):
allowed_arg_cols(1), arg_count(0)
allowed_arg_cols(1), persistent_maybe_null(0), arg_count(0)
{
with_sum_func= 0;
with_field= 0;
}
Item_func(Item *a):
allowed_arg_cols(1), arg_count(1)
allowed_arg_cols(1), persistent_maybe_null(0), arg_count(1)
{
args= tmp_arg;
args[0]= a;
@@ -78,7 +80,7 @@ public:
with_field= a->with_field;
}
Item_func(Item *a,Item *b):
allowed_arg_cols(1), arg_count(2)
allowed_arg_cols(1), persistent_maybe_null(0), arg_count(2)
{
args= tmp_arg;
args[0]= a; args[1]= b;
@@ -86,7 +88,7 @@ public:
with_field= a->with_field || b->with_field;
}
Item_func(Item *a,Item *b,Item *c):
allowed_arg_cols(1)
allowed_arg_cols(1), persistent_maybe_null(0)
{
arg_count= 0;
if ((args= (Item**) sql_alloc(sizeof(Item*)*3)))
@@ -98,7 +100,7 @@ public:
}
}
Item_func(Item *a,Item *b,Item *c,Item *d):
allowed_arg_cols(1)
allowed_arg_cols(1), persistent_maybe_null(0)
{
arg_count= 0;
if ((args= (Item**) sql_alloc(sizeof(Item*)*4)))
@@ -112,7 +114,7 @@ public:
}
}
Item_func(Item *a,Item *b,Item *c,Item *d,Item* e):
allowed_arg_cols(1)
allowed_arg_cols(1), persistent_maybe_null(0)
{
arg_count= 5;
if ((args= (Item**) sql_alloc(sizeof(Item*)*5)))
@@ -170,6 +172,18 @@ public:
my_decimal *val_decimal(my_decimal *);
void fix_char_length_ulonglong(ulonglong max_char_length_arg)
{
ulonglong max_result_length= max_char_length_arg *
collation.collation->mbmaxlen;
if (max_result_length >= MAX_BLOB_WIDTH)
{
max_length= MAX_BLOB_WIDTH;
set_persist_maybe_null(1);
}
else
max_length= (uint32) max_result_length;
}
bool agg_arg_charsets(DTCollation &c, Item **items, uint nitems,
uint flags, int item_sep)
{
@@ -371,6 +385,11 @@ public:
info.bool_function= &Item::restore_to_before_no_rows_in_result;
walk(&Item::call_bool_func_processor, FALSE, (uchar*) &info);
}
inline void set_persist_maybe_null(bool mb_null)
{
maybe_null= mb_null;
persistent_maybe_null= 1;
}
};
@@ -586,7 +605,7 @@ public:
}
double val_real();
enum_field_types field_type() const { return MYSQL_TYPE_DOUBLE; }
void fix_length_and_dec() { maybe_null= 1; }
void fix_length_and_dec() { set_persist_maybe_null(1); }
const char *func_name() const { return "double_typecast"; }
virtual void print(String *str, enum_query_type query_type);
};
@@ -727,7 +746,7 @@ class Item_dec_func :public Item_real_func
void fix_length_and_dec()
{
decimals=NOT_FIXED_DEC; max_length=float_length(decimals);
maybe_null=1;
set_persist_maybe_null(1);
}
};
@@ -1059,7 +1078,7 @@ public:
Item_func_coercibility(Item *a) :Item_int_func(a) {}
longlong val_int();
const char *func_name() const { return "coercibility"; }
void fix_length_and_dec() { max_length=10; maybe_null= 0; }
void fix_length_and_dec() { max_length=10; set_persist_maybe_null(0); }
table_map not_null_tables() const { return 0; }
};
@@ -1201,6 +1220,7 @@ public:
const char *func_name() const { return "last_insert_id"; }
void fix_length_and_dec()
{
unsigned_flag= TRUE;
if (arg_count)
max_length= args[0]->max_length;
unsigned_flag=1;
@@ -1221,7 +1241,7 @@ public:
{}
longlong val_int();
const char *func_name() const { return "benchmark"; }
void fix_length_and_dec() { max_length=1; maybe_null=0; }
void fix_length_and_dec() { max_length=1; set_persist_maybe_null(0); }
virtual void print(String *str, enum_query_type query_type);
bool check_vcol_func_processor(uchar *int_arg)
{
@@ -1474,7 +1494,7 @@ public:
double val_real() { DBUG_ASSERT(fixed == 1); null_value= 1; return 0.0; }
longlong val_int() { DBUG_ASSERT(fixed == 1); null_value=1; return 0; }
enum Item_result result_type () const { return STRING_RESULT; }
void fix_length_and_dec() { maybe_null=1; max_length=0; }
void fix_length_and_dec() { set_persist_maybe_null(1); max_length=0; }
};
#endif /* HAVE_DLOPEN */
@@ -1495,7 +1515,7 @@ class Item_func_get_lock :public Item_int_func
Item_func_get_lock(Item *a,Item *b) :Item_int_func(a,b) {}
longlong val_int();
const char *func_name() const { return "get_lock"; }
void fix_length_and_dec() { max_length=1; maybe_null=1;}
void fix_length_and_dec() { max_length=1; set_persist_maybe_null(1);}
bool check_vcol_func_processor(uchar *int_arg)
{
return trace_unsupported_by_check_vcol_func_processor(func_name());
@@ -1509,7 +1529,7 @@ public:
Item_func_release_lock(Item *a) :Item_int_func(a) {}
longlong val_int();
const char *func_name() const { return "release_lock"; }
void fix_length_and_dec() { max_length=1; maybe_null=1;}
void fix_length_and_dec() { max_length=1; set_persist_maybe_null(1);}
bool check_vcol_func_processor(uchar *int_arg)
{
return trace_unsupported_by_check_vcol_func_processor(func_name());
@@ -1527,7 +1547,7 @@ public:
Item_master_pos_wait(Item *a,Item *b, Item *c, Item *d) :Item_int_func(a,b,c,d) {}
longlong val_int();
const char *func_name() const { return "master_pos_wait"; }
void fix_length_and_dec() { max_length=21; maybe_null=1;}
void fix_length_and_dec() { max_length=21; set_persist_maybe_null(1);}
bool check_vcol_func_processor(uchar *int_arg)
{
return trace_unsupported_by_check_vcol_func_processor(func_name());
@@ -1744,7 +1764,8 @@ public:
Item_func_inet_aton(Item *a) :Item_int_func(a) {}
longlong val_int();
const char *func_name() const { return "inet_aton"; }
void fix_length_and_dec() { decimals= 0; max_length= 21; maybe_null= 1; unsigned_flag= 1;}
void fix_length_and_dec()
{ decimals= 0; max_length= 21; set_persist_maybe_null(1); unsigned_flag= 1; }
};
@@ -1813,7 +1834,8 @@ public:
Item_func_is_free_lock(Item *a) :Item_int_func(a) {}
longlong val_int();
const char *func_name() const { return "is_free_lock"; }
void fix_length_and_dec() { decimals=0; max_length=1; maybe_null=1;}
void fix_length_and_dec()
{ decimals= 0; max_length= 1; set_persist_maybe_null(1); }
bool check_vcol_func_processor(uchar *int_arg)
{
return trace_unsupported_by_check_vcol_func_processor(func_name());
@@ -1827,7 +1849,8 @@ public:
Item_func_is_used_lock(Item *a) :Item_int_func(a) {}
longlong val_int();
const char *func_name() const { return "is_used_lock"; }
void fix_length_and_dec() { decimals=0; max_length=10; maybe_null=1;}
void fix_length_and_dec()
{ decimals= 0; max_length= 10; set_persist_maybe_null(1);}
bool check_vcol_func_processor(uchar *int_arg)
{
return trace_unsupported_by_check_vcol_func_processor(func_name());
@@ -1850,7 +1873,7 @@ public:
Item_func_row_count() :Item_int_func() {}
longlong val_int();
const char *func_name() const { return "row_count"; }
void fix_length_and_dec() { decimals= 0; maybe_null=0; }
void fix_length_and_dec() { decimals= 0; set_persist_maybe_null(0); }
bool check_vcol_func_processor(uchar *int_arg)
{
@@ -1887,7 +1910,8 @@ private:
bool init_result_field(THD *thd);
protected:
bool is_expensive_processor(uchar *arg) { return TRUE; }
bool is_expensive_processor(uchar *arg)
{ return is_expensive(); }
public:
@@ -1966,7 +1990,7 @@ public:
bool fix_fields(THD *thd, Item **ref);
void fix_length_and_dec(void);
bool is_expensive() { return 1; }
bool is_expensive();
inline Field *get_sp_result_field()
{
@@ -1990,7 +2014,7 @@ public:
Item_func_found_rows() :Item_int_func() {}
longlong val_int();
const char *func_name() const { return "found_rows"; }
void fix_length_and_dec() { decimals= 0; maybe_null=0; }
void fix_length_and_dec() { decimals= 0; set_persist_maybe_null(0); }
bool check_vcol_func_processor(uchar *int_arg)
{
return trace_unsupported_by_check_vcol_func_processor(func_name());
@@ -2033,6 +2057,11 @@ public:
enum_field_types field_type() const { return last_value->field_type(); }
bool const_item() const { return 0; }
void evaluate_sideeffects();
void update_used_tables()
{
Item_func::update_used_tables();
maybe_null= last_value->maybe_null;
}
};