diff options
Diffstat (limited to 'sql/item_func.h')
| -rw-r--r-- | sql/item_func.h | 159 |
1 files changed, 92 insertions, 67 deletions
diff --git a/sql/item_func.h b/sql/item_func.h index 049ef82f71e..b4f3cce612d 100644 --- a/sql/item_func.h +++ b/sql/item_func.h @@ -397,8 +397,12 @@ public: bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) { return get_date_from_real(ltime, fuzzydate); } const Type_handler *type_handler() const { return &type_handler_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; + } }; @@ -784,7 +788,7 @@ public: bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate) { return get_date_from_int(ltime, fuzzydate); } const Type_handler *type_handler() const= 0; - void fix_length_and_dec() {} + bool fix_length_and_dec() { return FALSE; } }; @@ -798,7 +802,7 @@ public: Item_long_func(THD *thd, List<Item> &list): Item_int_func(thd, list) { } Item_long_func(THD *thd, Item_long_func *item) :Item_int_func(thd, item) {} const Type_handler *type_handler() const { return &type_handler_long; } - void fix_length_and_dec() { max_length= 11; } + bool fix_length_and_dec() { max_length= 11; return FALSE; } }; @@ -860,7 +864,7 @@ class Item_func_connection_id :public Item_long_func public: Item_func_connection_id(THD *thd): Item_long_func(thd) { unsigned_flag=1; } 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) @@ -917,9 +921,9 @@ public: set_if_bigger(char_length, 1U + (unsigned_flag ? 0 : 1)); fix_char_length(char_length); } - void fix_length_and_dec() + bool fix_length_and_dec() { - args[0]->type_handler()->Item_func_signed_fix_length_and_dec(this); + return args[0]->type_handler()->Item_func_signed_fix_length_and_dec(this); } virtual void print(String *str, enum_query_type query_type); uint decimal_precision() const { return args[0]->decimal_precision(); } @@ -949,9 +953,9 @@ public: null_value= args[0]->null_value; return value; } - void fix_length_and_dec() + bool fix_length_and_dec() { - args[0]->type_handler()->Item_func_unsigned_fix_length_and_dec(this); + return args[0]->type_handler()->Item_func_unsigned_fix_length_and_dec(this); } uint decimal_precision() const { return max_length; } virtual void print(String *str, enum_query_type query_type); @@ -980,9 +984,10 @@ public: { return get_date_from_decimal(ltime, fuzzydate); } const Type_handler *type_handler() const { return &type_handler_newdecimal; } void fix_length_and_dec_generic() {} - void fix_length_and_dec() + bool fix_length_and_dec() { - args[0]->type_handler()->Item_decimal_typecast_fix_length_and_dec(this); + return + args[0]->type_handler()->Item_decimal_typecast_fix_length_and_dec(this); } const char *func_name() const { return "decimal_typecast"; } virtual void print(String *str, enum_query_type query_type); @@ -1003,9 +1008,10 @@ public: } double val_real(); void fix_length_and_dec_generic() { maybe_null= 1; } - void fix_length_and_dec() + bool fix_length_and_dec() { - args[0]->type_handler()->Item_double_typecast_fix_length_and_dec(this); + return + args[0]->type_handler()->Item_double_typecast_fix_length_and_dec(this); } const char *func_name() const { return "double_typecast"; } virtual void print(String *str, enum_query_type query_type); @@ -1032,7 +1038,7 @@ public: Item_func_additive_op(thd, a, b) {} const char *func_name() const { return "+"; } enum precedence precedence() const { return ADD_PRECEDENCE; } - void fix_length_and_dec(); + bool fix_length_and_dec(); longlong int_op(); double real_op(); my_decimal *decimal_op(my_decimal *); @@ -1050,7 +1056,7 @@ public: longlong int_op(); double real_op(); my_decimal *decimal_op(my_decimal *); - void fix_length_and_dec(); + bool fix_length_and_dec(); void fix_unsigned_flag(); void fix_length_and_dec_double() { @@ -1083,7 +1089,7 @@ public: double real_op(); my_decimal *decimal_op(my_decimal *); 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) @@ -1101,7 +1107,7 @@ 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 fix_length_and_dec_double(); void fix_length_and_dec_int(); void result_precision(); @@ -1120,7 +1126,7 @@ public: enum precedence precedence() const { return MUL_PRECEDENCE; } const Type_handler *type_handler() const { return type_handler_long_or_longlong(); } - void fix_length_and_dec(); + bool fix_length_and_dec(); void print(String *str, enum_query_type query_type) { print_op(str, query_type); @@ -1144,7 +1150,7 @@ public: const char *func_name() const { return "MOD"; } enum precedence precedence() const { return MUL_PRECEDENCE; } void result_precision(); - void fix_length_and_dec(); + bool fix_length_and_dec(); void fix_length_and_dec_double() { Item_num_op::fix_length_and_dec_double(); @@ -1187,7 +1193,7 @@ public: void fix_length_and_dec_int(); void fix_length_and_dec_double(); void fix_length_and_dec_decimal(); - void fix_length_and_dec(); + bool fix_length_and_dec(); uint decimal_precision() const { return args[0]->decimal_precision(); } bool need_parentheses_in_default() { return true; } Item *get_copy(THD *thd) @@ -1206,7 +1212,7 @@ public: void fix_length_and_dec_int(); void fix_length_and_dec_double(); void fix_length_and_dec_decimal(); - void fix_length_and_dec(); + bool fix_length_and_dec(); Item *get_copy(THD *thd) { return get_item_copy<Item_func_abs>(thd, this); } }; @@ -1220,10 +1226,11 @@ 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; } }; @@ -1383,7 +1390,7 @@ public: Item_func_int_val(THD *thd, Item *a): Item_func_num1(thd, a) {} void fix_length_and_dec_double(); void fix_length_and_dec_int_or_decimal(); - void fix_length_and_dec(); + bool fix_length_and_dec(); }; @@ -1429,9 +1436,9 @@ public: void fix_arg_decimal(); void fix_arg_int(); void fix_arg_double(); - void fix_length_and_dec() + bool fix_length_and_dec() { - args[0]->type_handler()->Item_func_round_fix_length_and_dec(this); + return args[0]->type_handler()->Item_func_round_fix_length_and_dec(this); } Item *get_copy(THD *thd) { return get_item_copy<Item_func_round>(thd, this); } @@ -1473,7 +1480,7 @@ public: Item_func_sign(THD *thd, Item *a): Item_long_func(thd, a) {} const char *func_name() const { return "sign"; } uint decimal_precision() const { return 1; } - void fix_length_and_dec() { fix_char_length(2); } + bool fix_length_and_dec() { fix_char_length(2); return FALSE; } longlong val_int(); Item *get_copy(THD *thd) { return get_item_copy<Item_func_sign>(thd, this); } @@ -1492,8 +1499,12 @@ 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) { return get_item_copy<Item_func_units>(thd, this); } }; @@ -1577,11 +1588,12 @@ public: Item_func::aggregate_attributes_real(items, nitems); max_length= float_length(decimals); } - void fix_length_and_dec() + bool fix_length_and_dec() { if (aggregate_for_min_max(func_name(), args, arg_count)) - return; + return true; fix_attributes(args, arg_count); + return false; } }; @@ -1626,11 +1638,12 @@ public: const char *func_name() const { return "rollup_const"; } bool const_item() const { return 0; } const Type_handler *type_handler() const { return args[0]->type_handler(); } - void fix_length_and_dec() + bool fix_length_and_dec() { collation= args[0]->collation; max_length= args[0]->max_length; decimals=args[0]->decimals; + return FALSE; } Item *get_copy(THD *thd) { return get_item_copy<Item_func_rollup_const>(thd, this); } @@ -1643,7 +1656,7 @@ class Item_long_func_length: public Item_long_func { return args[0]->check_type_can_return_str(func_name()); } public: Item_long_func_length(THD *thd, Item *a): Item_long_func(thd, a) {} - void fix_length_and_dec() { max_length=10; } + bool fix_length_and_dec() { max_length=10; return FALSE; } }; @@ -1663,9 +1676,10 @@ class Item_func_bit_length :public Item_longlong_func String value; public: Item_func_bit_length(THD *thd, Item *a): Item_longlong_func(thd, a) {} - void fix_length_and_dec() + bool fix_length_and_dec() { max_length= 11; // 0x100000000*8 = 34,359,738,368 + return FALSE; } longlong val_int(); const char *func_name() const { return "bit_length"; } @@ -1692,7 +1706,7 @@ public: Item_func_coercibility(THD *thd, Item *a): Item_long_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; @@ -1728,10 +1742,10 @@ public: :Item_long_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() { max_length= MY_INT32_NUM_DECIMAL_DIGITS; - agg_arg_charsets_for_comparison(cmp_collation, args, 2); + return agg_arg_charsets_for_comparison(cmp_collation, args, 2); } virtual void print(String *str, enum_query_type query_type); Item *get_copy(THD *thd) @@ -1748,7 +1762,7 @@ public: Item_func_field(THD *thd, List<Item> &list): Item_long_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) { return get_item_copy<Item_func_field>(thd, this); } }; @@ -1763,7 +1777,7 @@ public: Item_func_ascii(THD *thd, Item *a): Item_long_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) { return get_item_copy<Item_func_ascii>(thd, this); } }; @@ -1775,7 +1789,7 @@ class Item_func_ord :public Item_long_func String value; public: Item_func_ord(THD *thd, Item *a): Item_long_func(thd, a) {} - void fix_length_and_dec() { fix_char_length(7); } + bool fix_length_and_dec() { fix_char_length(7); return FALSE; } longlong val_int(); const char *func_name() const { return "ord"; } Item *get_copy(THD *thd) @@ -1795,7 +1809,7 @@ public: Item_long_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) { return get_item_copy<Item_func_find_in_set>(thd, this); } }; @@ -1809,7 +1823,7 @@ class Item_func_bit: public Item_longlong_func public: Item_func_bit(THD *thd, Item *a, Item *b): Item_longlong_func(thd, a, b) {} Item_func_bit(THD *thd, Item *a): Item_longlong_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) { @@ -1848,7 +1862,7 @@ public: Item_func_bit_count(THD *thd, Item *a): Item_long_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) { return get_item_copy<Item_func_bit_count>(thd, this); } }; @@ -1901,11 +1915,12 @@ public: Item_func_last_insert_id(THD *thd, Item *a): Item_longlong_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; + return FALSE; } bool fix_fields(THD *thd, Item **ref); bool check_vcol_func_processor(void *arg) @@ -1930,7 +1945,7 @@ 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) { @@ -1950,7 +1965,7 @@ class Item_func_sleep :public Item_long_func { return args[0]->check_type_can_return_real(func_name()); } public: Item_func_sleep(THD *thd, Item *a): Item_long_func(thd, a) {} - void fix_length_and_dec() { fix_char_length(1); } + bool fix_length_and_dec() { fix_char_length(1); return FALSE; } bool const_item() const { return 0; } const char *func_name() const { return "sleep"; } table_map used_tables() const @@ -2094,7 +2109,7 @@ class Item_func_udf_float :public Item_udf_func double val_real(); String *val_str(String *str); const Type_handler *type_handler() const { return &type_handler_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) { return get_item_copy<Item_func_udf_float>(thd, this); } }; @@ -2112,7 +2127,7 @@ public: double val_real() { return (double) Item_func_udf_int::val_int(); } String *val_str(String *str); const Type_handler *type_handler() const { return &type_handler_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) { return get_item_copy<Item_func_udf_int>(thd, this); } }; @@ -2130,7 +2145,7 @@ public: my_decimal *val_decimal(my_decimal *); String *val_str(String *str); const Type_handler *type_handler() const { return &type_handler_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) { return get_item_copy<Item_func_udf_decimal>(thd, this); } }; @@ -2169,7 +2184,7 @@ public: return dec_buf; } const Type_handler *type_handler() const { return string_type_handler(); } - void fix_length_and_dec(); + bool fix_length_and_dec(); Item *get_copy(THD *thd) { return get_item_copy<Item_func_udf_str>(thd, this); } }; @@ -2222,7 +2237,7 @@ public: { DBUG_ASSERT(fixed == 1); null_value=1; return 0; } 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; } - 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 */ @@ -2242,7 +2257,7 @@ class Item_func_get_lock :public Item_long_func Item_func_get_lock(THD *thd, Item *a, Item *b) :Item_long_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; @@ -2266,7 +2281,7 @@ public: Item_func_release_lock(THD *thd, Item *a): Item_long_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; @@ -2303,7 +2318,7 @@ public: Item_longlong_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); @@ -2328,7 +2343,7 @@ public: :Item_long_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); @@ -2425,7 +2440,7 @@ 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(); void print(String *str, enum_query_type query_type); enum precedence precedence() const { return ASSIGN_PRECEDENCE; } void print_as_stmt(String *str, enum_query_type query_type); @@ -2460,7 +2475,7 @@ 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 @@ -2577,7 +2592,7 @@ 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; } @@ -2721,7 +2736,11 @@ public: Item_func_is_free_lock(THD *thd, Item *a): Item_long_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); @@ -2739,7 +2758,11 @@ public: Item_func_is_used_lock(THD *thd, Item *a): Item_long_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); @@ -2788,7 +2811,7 @@ public: Item_func_row_count(THD *thd): Item_longlong_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); @@ -2906,7 +2929,7 @@ 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() @@ -2946,7 +2969,7 @@ public: Item_func_found_rows(THD *thd): Item_longlong_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); @@ -2989,10 +3012,11 @@ public: { return mark_unsupported_function(func_name(), "()", arg, VCOL_IMPOSSIBLE); } - void fix_length_and_dec() + bool fix_length_and_dec() { maybe_null= null_value= false; max_length= 11; + return FALSE; } Item *get_copy(THD *thd) { return get_item_copy<Item_func_sqlcode>(thd, this); } @@ -3008,8 +3032,8 @@ 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) { @@ -3031,7 +3055,7 @@ public: String *val_str(String *); my_decimal *val_decimal(my_decimal *); bool get_date(MYSQL_TIME *ltime, ulonglong fuzzydate); - void fix_length_and_dec(); + bool fix_length_and_dec(); const char *func_name() const { return "last_value"; } const Type_handler *type_handler() const { return last_value->type_handler(); } bool eval_not_null_tables(void *) @@ -3063,11 +3087,12 @@ public: Item_longlong_func(thd), table_list(table_list_arg) {} longlong val_int(); const char *func_name() const { return "nextval"; } - void fix_length_and_dec() + bool fix_length_and_dec() { unsigned_flag= 0; max_length= MAX_BIGINT_WIDTH; maybe_null= 1; /* In case of errors */ + return FALSE; } /* update_table() function must be called during the value function |