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46 lines
1.1 KiB
Text
46 lines
1.1 KiB
Text
#
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# MDEV-33971 Using NAME_CONST() changes the plan
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#
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create table t1 (a int, b int);
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insert into t1 values (1,1),(2,2);
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--source include/explain-no-costs.inc
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explain format=json
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select * from t1 where a=name_const('varname',1);
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--source include/explain-no-costs.inc
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explain format=json
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select * from t1 left join t1 as t2 on t1.a=name_const('varname',1) and t1.b=t2.b;
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create table t2 (
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a varchar(100) collate utf8_unicode_ci,
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b int
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);
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insert into t2 values ('foo', 1),('bar', 1);
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create procedure p1(var1 varchar(10))
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update t2 set b=b+1 where a=var1;
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call p1('foo');
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call p1('foo');
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call p1('foo');
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select * from t2;
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create table t3 (
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a varchar(100) collate utf8_unicode_ci,
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b int
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);
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insert into t3 values ('foo', 1),('bar', 1);
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select * from t3;
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--source include/explain-no-costs.inc
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explain format=json
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update t3 set b=b+1 where a= NAME_CONST('var1',_latin1'foo' COLLATE 'latin1_swedish_ci');
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#
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# enable after fixing MDEV-27904
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#
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--disable_view_protocol
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select * from t3 where a= NAME_CONST('var1',_latin1'foo' COLLATE 'latin1_swedish_ci');
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--enable_view_protocol
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drop procedure p1;
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drop table t1, t2, t3;
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