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13 lines
543 B
SQL
13 lines
543 B
SQL
DROP TABLE IF EXISTS test_joinGet;
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CREATE TABLE test_joinGet(user_id Nullable(Int32), name String) Engine = Join(ANY, LEFT, user_id);
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INSERT INTO test_joinGet VALUES (2, 'a'), (6, 'b'), (10, 'c'), (null, 'd');
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SELECT toNullable(toInt32(2)) user_id WHERE joinGet(test_joinGet, 'name', user_id) != '';
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-- If the JOIN keys are Nullable fields, the rows where at least one of the keys has the value NULL are not joined.
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SELECT cast(null AS Nullable(Int32)) user_id WHERE joinGet(test_joinGet, 'name', user_id) != '';
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DROP TABLE test_joinGet;
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