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38 lines
1.7 KiB
Text
38 lines
1.7 KiB
Text
set @allowed_packet= @@max_allowed_packet;
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SET GLOBAL max_allowed_packet=67108864;
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connect con1, localhost, root,,;
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create table t1(a longblob unique, b longblob , c longblob , unique(b,c));
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desc t1;
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Field Type Null Key Default Extra
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a longblob YES UNI NULL
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b longblob YES MUL NULL
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c longblob YES NULL
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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` longblob DEFAULT NULL,
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`b` longblob DEFAULT NULL,
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`c` longblob DEFAULT NULL,
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UNIQUE KEY `a` (`a`) USING HASH,
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UNIQUE KEY `b` (`b`,`c`) USING HASH
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) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
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show keys from t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment Index_comment Ignored
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t1 0 a 1 a A NULL NULL NULL YES HASH NO
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t1 0 b 1 b A NULL NULL NULL YES HASH NO
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t1 0 b 2 c A NULL NULL NULL YES HASH NO
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insert into t1 values(concat(repeat('sachin',10000000),'1'),concat(repeat('sachin',10000000),'1'),
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concat(repeat('sachin',10000000),'1'));
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insert into t1 values(concat(repeat('sachin',10000000),'2'),concat(repeat('sachin',10000000),'2'),
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concat(repeat('sachin',10000000),'1'));
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insert into t1 values(concat(repeat('sachin',10000000),'2'),concat(repeat('sachin',10000000),'2'),
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concat(repeat('sachin',10000000),'4'));
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ERROR 23000: Duplicate entry 'sachinsachinsachinsachinsachinsachinsachinsachinsachinsachins...' for key 'a'
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insert into t1 values(concat(repeat('sachin',10000000),'3'),concat(repeat('sachin',10000000),'1'),
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concat(repeat('sachin',10000000),'1'));
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ERROR 23000: Duplicate entry 'sachinsachinsachinsachinsachinsachinsachinsachinsachinsachins...' for key 'b'
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drop table t1;
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disconnect con1;
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connection default;
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set @@GLOBAL.max_allowed_packet= @allowed_packet;
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# End of 10.4 tests
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