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21 lines
655 B
Plaintext
21 lines
655 B
Plaintext
USE tpch1;
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select r_name, n_name from region left outer join nation on r_name = n_name where n_name is null;
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r_name n_name
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AFRICA NULL
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AMERICA NULL
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ASIA NULL
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EUROPE NULL
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MIDDLE EAST NULL
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select n_nationkey, r_regionkey from nation left join region on r_regionkey=n_nationkey where r_regionkey < 2;
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n_nationkey r_regionkey
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0 0
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1 1
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select n_nationkey from nation left join region on r_regionkey=n_nationkey where (case when r_regionkey < 2 then 1 else 2 end) < 2;
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n_nationkey
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0
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1
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select n_nationkey, r_regionkey from nation left join region on r_regionkey=n_nationkey where (case when r_regionkey < 2 then 1 else 0 end) > 0;
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n_nationkey r_regionkey
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0 0
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1 1
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