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20 lines
496 B
Plaintext
20 lines
496 B
Plaintext
drop table if exists t1;
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set sql_mode="MySQL40";
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select @@sql_mode;
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@@sql_mode
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NO_FIELD_OPTIONS,MYSQL40,HIGH_NOT_PRECEDENCE
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set @@sql_mode="ANSI";
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select @@sql_mode;
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@@sql_mode
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REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ONLY_FULL_GROUP_BY,ANSI
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SELECT 'A' || 'B';
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'A' || 'B'
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AB
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CREATE TABLE t1 (id INT, id2 int);
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SELECT id,NULL,1,1.1,'a' FROM t1 GROUP BY id;
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id NULL 1 1.1 a
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SELECT id FROM t1 GROUP BY id2;
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ERROR 42000: 'test.t1.id' isn't in GROUP BY
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drop table t1;
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SET @@SQL_MODE="";
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