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51 lines
1.2 KiB
Plaintext
51 lines
1.2 KiB
Plaintext
USE tpch1;
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drop table if exists a1;
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drop table if exists a2;
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create table a1 (c1 int, c2 int)engine=columnstore;
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create table a2 (c1 int, c2 int)engine=columnstore;
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insert into a1 values (1, 1),(2,2),(3,null),(null,3),(null,null);
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insert into a2 values (1, 1),(2, null),(null, 2),(3, 3),(null, null);
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select * from a1 where c1 not in (select c2 from a2);
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c1 c2
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select * from a1 where c1 not in (select c2 from a2 where a1.c2=a2.c2);
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c1 c2
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3 NULL
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NULL NULL
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select * from a1 where not exists (select c2 from a2 where a1.c2=a2.c2 and a1.c1=a2.c1);
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c1 c2
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2 2
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3 NULL
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NULL 3
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NULL NULL
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select * from a1 where not exists (select c2 from a2 where a1.c2=a2.c2);
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c1 c2
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3 NULL
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NULL NULL
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select * from a1 where (c1,c2) not in (select c1,c2 from a2 where a2.c1 > a1.c2);
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c1 c2
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1 1
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2 2
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3 NULL
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NULL 3
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NULL NULL
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select * from a1 where c1 not in (select c2 from a2 where a1.c2>a2.c2);
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c1 c2
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1 1
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2 2
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3 NULL
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NULL NULL
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select * from a1 where c1 not in (select 1 from a2 where a1.c1=a2.c1);
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c1 c2
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2 2
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3 NULL
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NULL 3
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NULL NULL
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select count(*) from a1 where c1 not in (select c2 from a2 where a1.c2=a2.c2);
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count(*)
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2
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select count(*) from a1 where not exists (select c2 from a2 where a1.c2=a2.c2 and a1.c1=a2.c1);
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count(*)
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4
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drop table a1;
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drop table a2;
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