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266563ad77
That is, when the precision of DEFAULT NOW() is less than the precision of the column, do not convert it to unireg_check, use the new approach where DEFAULT is tryly an expression.
35 lines
1.7 KiB
Plaintext
35 lines
1.7 KiB
Plaintext
drop table if exists t1,t2;
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create table t1(str varchar(10) default 'def',strnull varchar(10),intg int default '10',rel double default '3.14');
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insert into t1 values ('','',0,0.0);
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select default(str), default(strnull), default(intg), default(rel) from t1;
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default(str) default(strnull) default(intg) default(rel)
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def NULL 10 3.14
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explain extended select default(str), default(strnull), default(intg), default(rel) from t1;
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00
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Warnings:
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Note 1003 select default('') AS `default(str)`,default('') AS `default(strnull)`,default(0) AS `default(intg)`,default(0) AS `default(rel)` from dual
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select * from t1 where str <> default(str);
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str strnull intg rel
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0 0
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explain select * from t1 where str <> default(str);
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 system NULL NULL NULL NULL 1
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drop table t1;
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CREATE TABLE t1 (id int(11), s varchar(20));
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INSERT INTO t1 VALUES (1, 'one'), (2, 'two'), (3, 'three');
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SELECT s, 32 AS mi FROM t1 GROUP BY s HAVING DEFAULT(mi) IS NULL;
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ERROR HY000: Field 'mi' doesn't have a default value
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DROP TABLE t1;
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set timestamp=unix_timestamp('2001-01-01 10:20:30.123456');
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create table t1 (a int default 1, b int default (a+1),
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c varchar(100) default 'foo', d text default 'bar',
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e timestamp default now(), f timestamp(6) default now(2));
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insert t1 () values ();
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insert t1 (a) values (10);
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select default(a),default(b),default(c),default(d),default(e),default(f) from t1;
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default(a) default(b) default(c) default(d) default(e) default(f)
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1 2 foo bar 2001-01-01 10:20:30 2001-01-01 10:20:30.120000
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1 11 foo bar 2001-01-01 10:20:30 2001-01-01 10:20:30.120000
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drop table t1;
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