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42cd956752
When implicitly converting string fields to numbers the string-to-number conversion error was not sent to the client. Added code to send the conversion error as warning. We also need to prevent generation of warnings from the places where val_xxx() methods are called for the sole purpose of updating the Item::null_value flag. To achieve that a special function is added (and called) : update_null_value(). This function will set the no_errors flag and will call val_xxx(). The warning generation in Field_string::val_xxx() will use the flag when generating the conversion warnings.
56 lines
1.3 KiB
Plaintext
56 lines
1.3 KiB
Plaintext
drop table if exists t1;
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CREATE TABLE t1 (id CHAR(12) not null, PRIMARY KEY (id));
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insert into t1 values ('000000000001'),('000000000002');
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explain select * from t1 where id=000000000001;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index PRIMARY PRIMARY 12 NULL 2 Using where; Using index
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select * from t1 where id=000000000001;
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id
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000000000001
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delete from t1 where id=000000000002;
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select * from t1;
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id
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000000000001
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drop table t1;
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SELECT 'a' = 'a ';
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'a' = 'a '
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1
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SELECT 'a\0' < 'a';
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'a\0' < 'a'
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1
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SELECT 'a\0' < 'a ';
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'a\0' < 'a '
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1
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SELECT 'a\t' < 'a';
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'a\t' < 'a'
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1
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SELECT 'a\t' < 'a ';
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'a\t' < 'a '
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1
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CREATE TABLE t1 (a char(10) not null);
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INSERT INTO t1 VALUES ('a'),('a\0'),('a\t'),('a ');
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SELECT hex(a),STRCMP(a,'a'), STRCMP(a,'a ') FROM t1;
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hex(a) STRCMP(a,'a') STRCMP(a,'a ')
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61 0 0
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6100 -1 -1
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6109 -1 -1
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61 0 0
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DROP TABLE t1;
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SELECT CHAR(31) = '', '' = CHAR(31);
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CHAR(31) = '' '' = CHAR(31)
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0 0
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SELECT CHAR(30) = '', '' = CHAR(30);
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CHAR(30) = '' '' = CHAR(30)
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0 0
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create table t1 (a tinyint(1),b binary(1));
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insert into t1 values (0x01,0x01);
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select * from t1 where a=b;
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a b
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Warnings:
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Warning 1292 Truncated incorrect DOUBLE value: ''
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select * from t1 where a=b and b=0x01;
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a b
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Warnings:
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Warning 1292 Truncated incorrect DOUBLE value: ''
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drop table if exists t1;
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