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-rw-r--r--sql/item_func.h118
1 files changed, 65 insertions, 53 deletions
diff --git a/sql/item_func.h b/sql/item_func.h
index 3787b4f4924..0969cf2e3f0 100644
--- a/sql/item_func.h
+++ b/sql/item_func.h
@@ -399,8 +399,8 @@ public:
{ DBUG_ASSERT(fixed == 1); return (longlong) rint(val_real()); }
enum Item_result result_type () const { return REAL_RESULT; }
enum_field_types field_type() const { return MYSQL_TYPE_DOUBLE; }
- void fix_length_and_dec()
- { decimals= NOT_FIXED_DEC; max_length= float_length(decimals); }
+ bool fix_length_and_dec()
+ { decimals= NOT_FIXED_DEC; max_length= float_length(decimals); return FALSE; }
};
@@ -577,7 +577,7 @@ class Item_func_num1: public Item_func_numhybrid
public:
Item_func_num1(THD *thd, Item *a): Item_func_numhybrid(thd, a) {}
Item_func_num1(THD *thd, Item *a, Item *b): Item_func_numhybrid(thd, a, b) {}
- void fix_length_and_dec();
+ bool fix_length_and_dec();
};
@@ -592,7 +592,7 @@ class Item_num_op :public Item_func_numhybrid
{
print_op(str, query_type);
}
- void fix_length_and_dec();
+ bool fix_length_and_dec();
bool need_parentheses_in_default() { return true; }
};
@@ -619,7 +619,7 @@ public:
String *val_str(String*str);
enum Item_result result_type () const { return INT_RESULT; }
enum_field_types field_type() const { return MYSQL_TYPE_LONGLONG; }
- void fix_length_and_dec() {}
+ bool fix_length_and_dec() { return FALSE; }
};
@@ -630,7 +630,7 @@ class Item_func_connection_id :public Item_int_func
public:
Item_func_connection_id(THD *thd): Item_int_func(thd) {}
const char *func_name() const { return "connection_id"; }
- void fix_length_and_dec();
+ bool fix_length_and_dec();
bool fix_fields(THD *thd, Item **ref);
longlong val_int() { DBUG_ASSERT(fixed == 1); return value; }
bool check_vcol_func_processor(void *arg)
@@ -656,7 +656,7 @@ public:
null_value= args[0]->null_value;
return value;
}
- void fix_length_and_dec()
+ bool fix_length_and_dec()
{
uint32 char_length= MY_MIN(args[0]->max_char_length(),
MY_INT64_NUM_DECIMAL_DIGITS);
@@ -667,6 +667,7 @@ public:
*/
set_if_bigger(char_length, 1U + (unsigned_flag ? 0 : 1));
fix_char_length(char_length);
+ return FALSE;
}
virtual void print(String *str, enum_query_type query_type);
uint decimal_precision() const { return args[0]->decimal_precision(); }
@@ -713,7 +714,7 @@ public:
my_decimal *val_decimal(my_decimal*);
enum Item_result result_type () const { return DECIMAL_RESULT; }
enum_field_types field_type() const { return MYSQL_TYPE_NEWDECIMAL; }
- void fix_length_and_dec() {}
+ bool fix_length_and_dec() { return FALSE; }
const char *func_name() const { return "decimal_typecast"; }
virtual void print(String *str, enum_query_type query_type);
bool need_parentheses_in_default() { return true; }
@@ -733,7 +734,7 @@ public:
}
double val_real();
enum_field_types field_type() const { return MYSQL_TYPE_DOUBLE; }
- void fix_length_and_dec() { maybe_null= 1; }
+ bool fix_length_and_dec() { maybe_null= 1; return FALSE; }
const char *func_name() const { return "double_typecast"; }
virtual void print(String *str, enum_query_type query_type);
bool need_parentheses_in_default() { return true; }
@@ -777,7 +778,7 @@ public:
longlong int_op();
double real_op();
my_decimal *decimal_op(my_decimal *);
- void fix_length_and_dec();
+ bool fix_length_and_dec();
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_minus>(thd, mem_root, this); }
};
@@ -811,7 +812,7 @@ public:
my_decimal *decimal_op(my_decimal *);
const char *func_name() const { return "/"; }
enum precedence precedence() const { return MUL_PRECEDENCE; }
- void fix_length_and_dec();
+ bool fix_length_and_dec();
void result_precision();
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_div>(thd, mem_root, this); }
@@ -826,7 +827,7 @@ public:
longlong val_int();
const char *func_name() const { return "DIV"; }
enum precedence precedence() const { return MUL_PRECEDENCE; }
- void fix_length_and_dec();
+ bool fix_length_and_dec();
void print(String *str, enum_query_type query_type)
{
print_op(str, query_type);
@@ -850,7 +851,7 @@ public:
const char *func_name() const { return "%"; }
enum precedence precedence() const { return MUL_PRECEDENCE; }
void result_precision();
- void fix_length_and_dec();
+ bool fix_length_and_dec();
bool check_partition_func_processor(void *int_arg) {return FALSE;}
bool check_vcol_func_processor(void *arg) { return FALSE;}
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
@@ -873,7 +874,7 @@ public:
str->append(func_name());
args[0]->print_parenthesised(str, query_type, precedence());
}
- void fix_length_and_dec();
+ bool fix_length_and_dec();
uint decimal_precision() const { return args[0]->decimal_precision(); }
bool check_partition_func_processor(void *int_arg) {return FALSE;}
bool check_vcol_func_processor(void *arg) { return FALSE;}
@@ -891,7 +892,7 @@ public:
longlong int_op();
my_decimal *decimal_op(my_decimal *);
const char *func_name() const { return "abs"; }
- void fix_length_and_dec();
+ bool fix_length_and_dec();
bool check_partition_func_processor(void *int_arg) {return FALSE;}
bool check_vcol_func_processor(void *arg) { return FALSE;}
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
@@ -905,10 +906,11 @@ class Item_dec_func :public Item_real_func
public:
Item_dec_func(THD *thd, Item *a): Item_real_func(thd, a) {}
Item_dec_func(THD *thd, Item *a, Item *b): Item_real_func(thd, a, b) {}
- void fix_length_and_dec()
+ bool fix_length_and_dec()
{
decimals=NOT_FIXED_DEC; max_length=float_length(decimals);
maybe_null=1;
+ return FALSE;
}
};
@@ -1066,7 +1068,7 @@ class Item_func_int_val :public Item_func_num1
{
public:
Item_func_int_val(THD *thd, Item *a): Item_func_num1(thd, a) {}
- void fix_length_and_dec();
+ bool fix_length_and_dec();
};
@@ -1111,7 +1113,7 @@ public:
double real_op();
longlong int_op();
my_decimal *decimal_op(my_decimal *);
- void fix_length_and_dec();
+ bool fix_length_and_dec();
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_round>(thd, mem_root, this); }
};
@@ -1163,8 +1165,8 @@ public:
Item_real_func(thd, a), name(name_arg), mul(mul_arg), add(add_arg) {}
double val_real();
const char *func_name() const { return name; }
- void fix_length_and_dec()
- { decimals= NOT_FIXED_DEC; max_length= float_length(decimals); }
+ bool fix_length_and_dec()
+ { decimals= NOT_FIXED_DEC; max_length= float_length(decimals); return FALSE; }
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_units>(thd, mem_root, this); }
};
@@ -1194,7 +1196,7 @@ public:
String *val_str(String *);
my_decimal *val_decimal(my_decimal *);
bool get_date(MYSQL_TIME *res, ulonglong fuzzy_date);
- void fix_length_and_dec();
+ bool fix_length_and_dec();
};
class Item_func_min :public Item_func_min_max
@@ -1237,13 +1239,14 @@ public:
bool const_item() const { return 0; }
Item_result result_type() const { return args[0]->result_type(); }
enum_field_types field_type() const { return args[0]->field_type(); }
- void fix_length_and_dec()
+ bool fix_length_and_dec()
{
collation= args[0]->collation;
max_length= args[0]->max_length;
decimals=args[0]->decimals;
/* The item could be a NULL constant. */
null_value= args[0]->is_null();
+ return FALSE;
}
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_rollup_const>(thd, mem_root, this); }
@@ -1257,7 +1260,7 @@ public:
Item_func_length(THD *thd, Item *a): Item_int_func(thd, a) {}
longlong val_int();
const char *func_name() const { return "length"; }
- void fix_length_and_dec() { max_length=10; }
+ bool fix_length_and_dec() { max_length=10; return FALSE; }
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_length>(thd, mem_root, this); }
};
@@ -1280,7 +1283,7 @@ public:
Item_func_char_length(THD *thd, Item *a): Item_int_func(thd, a) {}
longlong val_int();
const char *func_name() const { return "char_length"; }
- void fix_length_and_dec() { max_length=10; }
+ bool fix_length_and_dec() { max_length=10; return FALSE; }
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_char_length>(thd, mem_root, this); }
};
@@ -1291,7 +1294,7 @@ public:
Item_func_coercibility(THD *thd, Item *a): Item_int_func(thd, a) {}
longlong val_int();
const char *func_name() const { return "coercibility"; }
- void fix_length_and_dec() { max_length=10; maybe_null= 0; }
+ bool fix_length_and_dec() { max_length=10; maybe_null= 0; return FALSE; }
bool eval_not_null_tables(void *)
{
not_null_tables_cache= 0;
@@ -1313,7 +1316,7 @@ public:
Item_func_locate(THD *thd, Item *a, Item *b, Item *c): Item_int_func(thd, a, b, c) {}
const char *func_name() const { return "locate"; }
longlong val_int();
- void fix_length_and_dec();
+ bool fix_length_and_dec();
virtual void print(String *str, enum_query_type query_type);
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_locate>(thd, mem_root, this); }
@@ -1329,7 +1332,7 @@ public:
Item_func_field(THD *thd, List<Item> &list): Item_int_func(thd, list) {}
longlong val_int();
const char *func_name() const { return "field"; }
- void fix_length_and_dec();
+ bool fix_length_and_dec();
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_field>(thd, mem_root, this); }
};
@@ -1342,7 +1345,7 @@ public:
Item_func_ascii(THD *thd, Item *a): Item_int_func(thd, a) {}
longlong val_int();
const char *func_name() const { return "ascii"; }
- void fix_length_and_dec() { max_length=3; }
+ bool fix_length_and_dec() { max_length=3; return FALSE; }
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_ascii>(thd, mem_root, this); }
};
@@ -1369,7 +1372,7 @@ public:
Item_int_func(thd, a, b), enum_value(0) {}
longlong val_int();
const char *func_name() const { return "find_in_set"; }
- void fix_length_and_dec();
+ bool fix_length_and_dec();
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_find_in_set>(thd, mem_root, this); }
};
@@ -1381,7 +1384,7 @@ class Item_func_bit: public Item_int_func
public:
Item_func_bit(THD *thd, Item *a, Item *b): Item_int_func(thd, a, b) {}
Item_func_bit(THD *thd, Item *a): Item_int_func(thd, a) {}
- void fix_length_and_dec() { unsigned_flag= 1; }
+ bool fix_length_and_dec() { unsigned_flag= 1; return FALSE; }
virtual inline void print(String *str, enum_query_type query_type)
{
@@ -1418,7 +1421,7 @@ public:
Item_func_bit_count(THD *thd, Item *a): Item_int_func(thd, a) {}
longlong val_int();
const char *func_name() const { return "bit_count"; }
- void fix_length_and_dec() { max_length=2; }
+ bool fix_length_and_dec() { max_length=2; return FALSE; }
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_bit_count>(thd, mem_root, this); }
};
@@ -1469,12 +1472,13 @@ public:
Item_func_last_insert_id(THD *thd, Item *a): Item_int_func(thd, a) {}
longlong val_int();
const char *func_name() const { return "last_insert_id"; }
- void fix_length_and_dec()
+ bool fix_length_and_dec()
{
unsigned_flag= TRUE;
if (arg_count)
max_length= args[0]->max_length;
unsigned_flag=1;
+ return FALSE;
}
bool fix_fields(THD *thd, Item **ref);
bool check_vcol_func_processor(void *arg)
@@ -1494,7 +1498,7 @@ public:
{}
longlong val_int();
const char *func_name() const { return "benchmark"; }
- void fix_length_and_dec() { max_length=1; maybe_null=0; }
+ bool fix_length_and_dec() { max_length=1; maybe_null=0; return FALSE; }
virtual void print(String *str, enum_query_type query_type);
bool check_vcol_func_processor(void *arg)
{
@@ -1652,7 +1656,7 @@ class Item_func_udf_float :public Item_udf_func
double val_real();
String *val_str(String *str);
enum_field_types field_type() const { return MYSQL_TYPE_DOUBLE; }
- void fix_length_and_dec() { fix_num_length_and_dec(); }
+ bool fix_length_and_dec() { fix_num_length_and_dec(); return FALSE; }
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_udf_float>(thd, mem_root, this); }
};
@@ -1671,7 +1675,7 @@ public:
String *val_str(String *str);
enum Item_result result_type () const { return INT_RESULT; }
enum_field_types field_type() const { return MYSQL_TYPE_LONGLONG; }
- void fix_length_and_dec() { decimals= 0; max_length= 21; }
+ bool fix_length_and_dec() { decimals= 0; max_length= 21; return FALSE; }
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_udf_int>(thd, mem_root, this); }
};
@@ -1690,7 +1694,7 @@ public:
String *val_str(String *str);
enum Item_result result_type () const { return DECIMAL_RESULT; }
enum_field_types field_type() const { return MYSQL_TYPE_NEWDECIMAL; }
- void fix_length_and_dec() { fix_num_length_and_dec(); }
+ bool fix_length_and_dec() { fix_num_length_and_dec(); return FALSE; }
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_udf_decimal>(thd, mem_root, this); }
};
@@ -1730,7 +1734,7 @@ public:
}
enum Item_result result_type () const { return STRING_RESULT; }
enum_field_types field_type() const { return string_field_type(); }
- void fix_length_and_dec();
+ bool fix_length_and_dec();
Item *get_copy(THD *thd, MEM_ROOT *mem_root)
{ return get_item_copy<Item_func_udf_str>(thd, mem_root, this); }
};
@@ -1782,7 +1786,7 @@ 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; }
+ bool fix_length_and_dec() { maybe_null=1; max_length=0; return FALSE; }
};
#endif /* HAVE_DLOPEN */
@@ -1797,7 +1801,7 @@ class Item_func_get_lock :public Item_int_func
Item_func_get_lock(THD *thd, Item *a, Item *b) :Item_int_func(thd, a, b) {}
longlong val_int();
const char *func_name() const { return "get_lock"; }
- void fix_length_and_dec() { max_length=1; maybe_null=1;}
+ bool fix_length_and_dec() { max_length=1; maybe_null=1; return FALSE; }
table_map used_tables() const
{
return used_tables_cache | RAND_TABLE_BIT;
@@ -1819,7 +1823,7 @@ public:
Item_func_release_lock(THD *thd, Item *a): Item_int_func(thd, a) {}
longlong val_int();
const char *func_name() const { return "release_lock"; }
- void fix_length_and_dec() { max_length= 1; maybe_null= 1;}
+ bool fix_length_and_dec() { max_length= 1; maybe_null= 1; return FALSE; }
table_map used_tables() const
{
return used_tables_cache | RAND_TABLE_BIT;
@@ -1847,7 +1851,7 @@ public:
Item_int_func(thd, 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;}
+ bool fix_length_and_dec() { max_length=21; maybe_null=1; return FALSE; }
bool check_vcol_func_processor(void *arg)
{
return mark_unsupported_function(func_name(), "()", arg, VCOL_IMPOSSIBLE);
@@ -1865,7 +1869,7 @@ public:
Item_master_gtid_wait(THD *thd, Item *a, Item *b): Item_int_func(thd, a, b) {}
longlong val_int();
const char *func_name() const { return "master_gtid_wait"; }
- void fix_length_and_dec() { max_length=2; }
+ bool fix_length_and_dec() { max_length=2; return FALSE; }
bool check_vcol_func_processor(void *arg)
{
return mark_unsupported_function(func_name(), "()", arg, VCOL_IMPOSSIBLE);
@@ -1956,7 +1960,7 @@ public:
void save_item_result(Item *item);
bool update();
bool fix_fields(THD *thd, Item **ref);
- void fix_length_and_dec();
+ bool fix_length_and_dec();
Field *create_field_for_create_select(TABLE *table)
{
return result_type() != STRING_RESULT ?
@@ -1997,7 +2001,7 @@ public:
longlong val_int();
my_decimal *val_decimal(my_decimal*);
String *val_str(String* str);
- void fix_length_and_dec();
+ bool fix_length_and_dec();
virtual void print(String *str, enum_query_type query_type);
/*
We must always return variables as strings to guard against selects of type
@@ -2079,7 +2083,7 @@ public:
size_t name_len_arg);
enum Functype functype() const { return GSYSVAR_FUNC; }
void update_null_value();
- void fix_length_and_dec();
+ bool fix_length_and_dec();
void print(String *str, enum_query_type query_type);
bool const_item() const { return true; }
table_map used_tables() const { return 0; }
@@ -2218,7 +2222,11 @@ public:
Item_func_is_free_lock(THD *thd, Item *a): Item_int_func(thd, 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;}
+ bool fix_length_and_dec()
+ {
+ decimals=0; max_length=1; maybe_null=1;
+ return FALSE;
+ }
bool check_vcol_func_processor(void *arg)
{
return mark_unsupported_function(func_name(), "()", arg, VCOL_IMPOSSIBLE);
@@ -2234,7 +2242,11 @@ public:
Item_func_is_used_lock(THD *thd, Item *a): Item_int_func(thd, 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;}
+ bool fix_length_and_dec()
+ {
+ decimals=0; max_length=10; maybe_null=1;
+ return FALSE;
+ }
bool check_vcol_func_processor(void *arg)
{
return mark_unsupported_function(func_name(), "()", arg, VCOL_IMPOSSIBLE);
@@ -2286,7 +2298,7 @@ public:
Item_func_row_count(THD *thd): Item_int_func(thd) {}
longlong val_int();
const char *func_name() const { return "row_count"; }
- void fix_length_and_dec() { decimals= 0; maybe_null=0; }
+ bool fix_length_and_dec() { decimals= 0; maybe_null=0; return FALSE; }
bool check_vcol_func_processor(void *arg)
{
return mark_unsupported_function(func_name(), "()", arg, VCOL_IMPOSSIBLE);
@@ -2414,7 +2426,7 @@ public:
virtual enum Functype functype() const { return FUNC_SP; }
bool fix_fields(THD *thd, Item **ref);
- void fix_length_and_dec(void);
+ bool fix_length_and_dec(void);
bool is_expensive();
inline Field *get_sp_result_field()
@@ -2450,7 +2462,7 @@ public:
Item_func_found_rows(THD *thd): Item_int_func(thd) {}
longlong val_int();
const char *func_name() const { return "found_rows"; }
- void fix_length_and_dec() { decimals= 0; maybe_null=0; }
+ bool fix_length_and_dec() { decimals= 0; maybe_null=0; return FALSE; }
bool check_vcol_func_processor(void *arg)
{
return mark_unsupported_function(func_name(), "()", arg, VCOL_IMPOSSIBLE);
@@ -2469,8 +2481,8 @@ public:
const char *func_name() const { return "uuid_short"; }
longlong val_int();
bool const_item() const { return false; }
- void fix_length_and_dec()
- { max_length= 21; unsigned_flag=1; }
+ bool fix_length_and_dec()
+ { max_length= 21; unsigned_flag=1; return FALSE; }
table_map used_tables() const { return RAND_TABLE_BIT; }
bool check_vcol_func_processor(void *arg)
{
@@ -2491,7 +2503,7 @@ public:
longlong val_int();
String *val_str(String *);
my_decimal *val_decimal(my_decimal *);
- void fix_length_and_dec();
+ bool fix_length_and_dec();
enum Item_result result_type () const { return last_value->result_type(); }
const char *func_name() const { return "last_value"; }
bool eval_not_null_tables(void *)
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