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65 lines
1.9 KiB
Text
65 lines
1.9 KiB
Text
create table t1(a integer) engine=innodb;
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ERROR 42000: This table type requires a primary key
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show warnings;
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Level Code Message
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Error 1173 This table type requires a primary key
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create table t1(a integer unique key) engine=innodb;
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ERROR 42000: This table type requires a primary key
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show warnings;
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Level Code Message
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Error 1173 This table type requires a primary key
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create table t1(a integer not null, b integer,
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unique key(a,b)) engine=innodb;
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ERROR 42000: This table type requires a primary key
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show warnings;
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Level Code Message
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Error 1173 This table type requires a primary key
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create table t1(a integer not null primary key) engine=innodb;
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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) NOT NULL,
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PRIMARY KEY (`a`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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show warnings;
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Level Code Message
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drop table t1;
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create table t1(a integer not null unique key) engine=innodb;
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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) NOT NULL,
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UNIQUE KEY `a` (`a`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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show warnings;
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Level Code Message
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drop table t1;
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set global innodb_force_primary_key = 0;
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create table t1(a integer) engine=innodb;
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show warnings;
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Level Code Message
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insert into t1 values (1),(2),(3);
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set global innodb_force_primary_key = 1;
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select * from t1;
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a
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1
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2
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3
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create table t2(a integer) engine=innodb;
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ERROR 42000: This table type requires a primary key
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show warnings;
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Level Code Message
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Error 1173 This table type requires a primary key
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drop table t1;
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create table t1 (i int not null, key(i)) engine=innodb;
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ERROR 42000: This table type requires a primary key
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create table t1 (i int not null, unique key(i)) engine=innodb;
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show warnings;
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Level Code Message
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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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`i` int(11) NOT NULL,
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UNIQUE KEY `i` (`i`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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drop table t1;
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