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c417da24a3
try the first unique key as a surrogate PK *before* disabling extended keys because of missing PK
15 lines
617 B
Text
15 lines
617 B
Text
#
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# MDEV-6794 XtraDB no longer using UNIQUE as clustered index when PK missing
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#
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--source include/have_innodb.inc
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create table t1 (c1 int not null, c2 int, unique index(c1), index (c2)) engine=innodb;
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insert into t1 (c1, c2) select 1, round(rand()*100);
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insert into t1 (c1, c2) select (select max(c1) from t1) + c1, c1*93563%100 from t1;
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insert into t1 (c1, c2) select (select max(c1) from t1) + c1, c1*93563%100 from t1;
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insert into t1 (c1, c2) select (select max(c1) from t1) + c1, c1*93563%100 from t1;
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select count(*) from t1;
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--query_vertical explain select * from t1 where c2 = 1 order by c1
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drop table t1;
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