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71fe190172
The fix for bug 31887 was incomplete : it assumes that all the field types returned by the IS_NUM macro are descendants of Item_num and tries to zero-fill the values before doing constant substitution with such fields when they are compared to constant string values. The only exception to this is Field_timestamp : it's in the IS_NUM macro, but is not a descendant of Field_num. Fixed by excluding timestamp fields (Field_timestamp) when zero-filling when converting the constant to compare with to a string. Note that this will not exclude the timestamp columns from const propagation. mysql-test/r/compare.result: Bug #39353: test case mysql-test/t/compare.test: Bug #39353: test case sql/item.cc: Bug #39353: don't zero-fill timestamp fields when const propagating to a string : they'll be converted to a string in a date/time format and not as an integer.
89 lines
2.1 KiB
Plaintext
89 lines
2.1 KiB
Plaintext
#
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# Bug when using comparions of strings and integers.
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#
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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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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select * from t1 where id=000000000001;
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delete from t1 where id=000000000002;
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select * from t1;
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drop table t1;
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#
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# Check the following:
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# "a" == "a "
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# "a\0" < "a"
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# "a\0" < "a "
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SELECT 'a' = 'a ';
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SELECT 'a\0' < 'a';
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SELECT 'a\0' < 'a ';
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SELECT 'a\t' < 'a';
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SELECT 'a\t' < 'a ';
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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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DROP TABLE t1;
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# Bug #8134: Comparison against CHAR(31) at end of string
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SELECT CHAR(31) = '', '' = CHAR(31);
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# Extra test
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SELECT CHAR(30) = '', '' = CHAR(30);
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# End of 4.1 tests
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#
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#Bug #21159: Optimizer: wrong result after AND with different data types
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#
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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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select * from t1 where a=b and b=0x01;
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drop table if exists t1;
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#
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# Bug #31887: DML Select statement not returning same results when executed
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# in version 5
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#
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CREATE TABLE t1 (b int(2) zerofill, c int(2) zerofill);
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INSERT INTO t1 (b,c) VALUES (1,2), (1,1), (2,2);
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SELECT CONCAT(b,c), CONCAT(b,c) = '0101' FROM t1;
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EXPLAIN EXTENDED SELECT b,c FROM t1 WHERE b = 1 AND CONCAT(b,c) = '0101';
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SELECT b,c FROM t1 WHERE b = 1 AND CONCAT(b,c) = '0101';
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CREATE TABLE t2 (a int);
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INSERT INTO t2 VALUES (1),(2);
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SELECT a,
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(SELECT COUNT(*) FROM t1
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WHERE b = t2.a AND CONCAT(b,c) = CONCAT('0',t2.a,'01')) x
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FROM t2 ORDER BY a;
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EXPLAIN EXTENDED
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SELECT a,
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(SELECT COUNT(*) FROM t1
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WHERE b = t2.a AND CONCAT(b,c) = CONCAT('0',t2.a,'01')) x
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FROM t2 ORDER BY a;
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DROP TABLE t1,t2;
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#
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# Bug #39353: Multiple conditions on timestamp column crashes server
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#
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CREATE TABLE t1 (a TIMESTAMP);
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INSERT INTO t1 VALUES (NOW()),(NOW()),(NOW());
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SELECT * FROM t1 WHERE a > '2008-01-01' AND a = '0000-00-00';
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DROP TABLE t1;
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--echo End of 5.0 tests
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