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19 lines
655 B
Text
19 lines
655 B
Text
create table t1 (a int, b int, key a1(a)) engine=innodb;
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insert into t1 values (1,1),(2,2),(3,3);
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alter table t1 alter index a1 ignored, algorithm=instant;
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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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`b` int(11) DEFAULT NULL,
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KEY `a1` (`a`) IGNORED
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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alter table t1 alter index a1 not ignored, algorithm=instant;
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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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`b` int(11) DEFAULT NULL,
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KEY `a1` (`a`)
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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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