ClickHouse/tests/queries/0_stateless/00939_test_null_in.sql

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DROP TABLE IF EXISTS nullt;
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CREATE TABLE nullt (c1 Nullable(UInt32), c2 Nullable(String))ENGINE = Log;
INSERT INTO nullt VALUES (1, 'abc'), (2, NULL), (NULL, NULL);
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SELECT c2 = ('abc') FROM nullt;
SELECT c2 IN ('abc') FROM nullt;
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SELECT c2 IN ('abc', NULL) FROM nullt;
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DROP TABLE IF EXISTS nullt;