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29 lines
1.2 KiB
29 lines
1.2 KiB
drop table if exists t1, t2;
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create table t1(a bigint, b bigint, index idx(a));
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create table t2(a bigint, b bigint, index idx(a));
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insert into t1 values(1, 1), (1, 1), (1, 1), (1, 1), (1, 1);
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insert into t2 values(1, 1);
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analyze table t1, t2;
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set session tidb_hashagg_partial_concurrency = 1;
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set session tidb_hashagg_final_concurrency = 1;
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-- Test https://github.com/pingcap/tidb/issues/9577
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-- we expect the following two SQL chose t2 as the outer table
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explain select /*+ TIDB_INLJ(t1, t2) */ * from t1 join t2 on t1.a=t2.a;
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explain select * from t1 join t2 on t1.a=t2.a;
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-- Test https://github.com/pingcap/tidb/issues/10516
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drop table if exists t1, t2;
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create table t1(a int not null, b int not null);
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create table t2(a int not null, b int not null, key a(a));
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set @@tidb_opt_insubq_to_join_and_agg=0;
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explain select /*+ TIDB_INLJ(t2@sel_2) */ * from t1 where t1.a in (select t2.a from t2);
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show warnings;
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set @@tidb_opt_insubq_to_join_and_agg=1;
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drop table if exists t1, t2;
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create table t1(a int not null, b int not null, key a(a));
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create table t2(a int not null, b int not null, key a(a));
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explain select /*+ TIDB_INLJ(t1) */ * from t1 where t1.a in (select t2.a from t2);
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