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d3fcd8d4c0
Prefer not automatic keys before automatic keys. If there is two conf BitKeeper/etc/ignore: added *.d include/my_base.h: Added flag for automaticly generated key mysql-test/r/constraints.result: Update tests after bug fix mysql-test/r/create.result: Update tests after bug fix mysql-test/r/innodb.result: Added test of automatic creation of foreign keys mysql-test/t/innodb.test: Added test of automatic creation of foreign keys mysql-test/t/key_cache.test: Portability fixes (64 BIT os) sql/sql_acl.cc: Indentation fixes sql/sql_class.cc: Fix key comparison to handle prefix and optionally key segments in different order. sql/sql_class.h: Added flag for automaticly generated keys sql/sql_parse.cc: Added flag for automaticly generated keys sql/sql_table.cc: Don't automaticly generate a new key for a foreign key constraint if there is already a usable key. Prefer not automatic keys before automatic keys. If there is two conflicting automatic keys, prefer the longer one. sql/sql_yacc.yy: Added flag for automaticly generated keys strings/strings-x86.s: Portability fix.
29 lines
887 B
Text
29 lines
887 B
Text
drop table if exists t1;
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create table t1 (a int check (a>0));
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insert into t1 values (1);
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insert into t1 values (0);
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drop table t1;
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create table t1 (a int ,b int, check a>b);
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insert into t1 values (1,0);
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insert into t1 values (0,1);
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drop table t1;
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create table t1 (a int ,b int, constraint abc check (a>b));
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insert into t1 values (1,0);
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insert into t1 values (0,1);
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drop table t1;
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create table t1 (a int null);
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insert into t1 values (1),(NULL);
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drop table t1;
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create table t1 (a int null);
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alter table t1 add constraint constraint_1 unique (a);
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alter table t1 add constraint unique key_1(a);
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alter table t1 add constraint constraint_2 unique key_2(a);
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`a` int(11) default NULL,
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UNIQUE KEY `constraint_1` (`a`),
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UNIQUE KEY `key_1` (`a`),
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UNIQUE KEY `key_2` (`a`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1;
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