43 lines
888 B
MySQL
43 lines
888 B
MySQL
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-- bool check
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CREATE TABLE booltmp (a bool);
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INSERT INTO booltmp VALUES (false), (true);
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SET enable_seqscan=on;
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SELECT count(*) FROM booltmp WHERE a < true;
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SELECT count(*) FROM booltmp WHERE a <= true;
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SELECT count(*) FROM booltmp WHERE a = true;
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SELECT count(*) FROM booltmp WHERE a >= true;
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SELECT count(*) FROM booltmp WHERE a > true;
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CREATE INDEX boolidx ON booltmp USING gist ( a );
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SET enable_seqscan=off;
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SELECT count(*) FROM booltmp WHERE a < true;
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SELECT count(*) FROM booltmp WHERE a <= true;
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SELECT count(*) FROM booltmp WHERE a = true;
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SELECT count(*) FROM booltmp WHERE a >= true;
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SELECT count(*) FROM booltmp WHERE a > true;
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-- Test index-only scans
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SET enable_bitmapscan=off;
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EXPLAIN (COSTS OFF)
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SELECT * FROM booltmp WHERE a;
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SELECT * FROM booltmp WHERE a;
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EXPLAIN (COSTS OFF)
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SELECT * FROM booltmp WHERE NOT a;
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SELECT * FROM booltmp WHERE NOT a;
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