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6c066c1a4a
* test: migrate join tests Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * chore: update test results after rebasing main branch Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix: unstable query sort results and natural_join test Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix: count(*) with joining Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix: unstable query sort results and style Signed-off-by: Dennis Zhuang <killme2008@gmail.com> --------- Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
77 lines
3.1 KiB
Plaintext
77 lines
3.1 KiB
Plaintext
-- Migrated from DuckDB test: test/sql/join/inner/test_join_with_nulls.test
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-- Tests JOIN behavior with NULL values
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CREATE TABLE null_left("id" INTEGER, val VARCHAR, ts TIMESTAMP TIME INDEX);
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Affected Rows: 0
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CREATE TABLE null_right("id" INTEGER, val VARCHAR, ts TIMESTAMP TIME INDEX);
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Affected Rows: 0
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INSERT INTO null_left VALUES (1, 'A', 1000), (2, NULL, 2000), (NULL, 'C', 3000), (4, 'D', 4000);
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Affected Rows: 4
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INSERT INTO null_right VALUES (1, 'X', 5000), (NULL, 'Y', 6000), (3, 'Z', 7000), (4, NULL, 8000);
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Affected Rows: 4
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-- INNER JOIN with NULLs (NULLs don't match)
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SELECT * FROM null_left l INNER JOIN null_right r ON l."id" = r."id" ORDER BY l.ts;
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+----+-----+---------------------+----+-----+---------------------+
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| id | val | ts | id | val | ts |
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+----+-----+---------------------+----+-----+---------------------+
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| 1 | A | 1970-01-01T00:00:01 | 1 | X | 1970-01-01T00:00:05 |
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| 4 | D | 1970-01-01T00:00:04 | 4 | | 1970-01-01T00:00:08 |
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+----+-----+---------------------+----+-----+---------------------+
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-- LEFT JOIN with NULLs
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SELECT * FROM null_left l LEFT JOIN null_right r ON l."id" = r."id" ORDER BY l.ts;
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+----+-----+---------------------+----+-----+---------------------+
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| id | val | ts | id | val | ts |
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+----+-----+---------------------+----+-----+---------------------+
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| 1 | A | 1970-01-01T00:00:01 | 1 | X | 1970-01-01T00:00:05 |
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| 2 | | 1970-01-01T00:00:02 | | | |
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| | C | 1970-01-01T00:00:03 | | | |
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| 4 | D | 1970-01-01T00:00:04 | 4 | | 1970-01-01T00:00:08 |
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+----+-----+---------------------+----+-----+---------------------+
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-- JOIN on string columns with NULLs
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SELECT * FROM null_left l INNER JOIN null_right r ON l.val = r.val ORDER BY l.ts;
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++
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++
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-- JOIN with IS NOT DISTINCT FROM (treats NULL=NULL as true)
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SELECT * FROM null_left l INNER JOIN null_right r ON l."id" IS NOT DISTINCT FROM r."id" ORDER BY l.ts;
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+----+-----+---------------------+----+-----+---------------------+
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| id | val | ts | id | val | ts |
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+----+-----+---------------------+----+-----+---------------------+
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| 1 | A | 1970-01-01T00:00:01 | 1 | X | 1970-01-01T00:00:05 |
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| | C | 1970-01-01T00:00:03 | | Y | 1970-01-01T00:00:06 |
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| 4 | D | 1970-01-01T00:00:04 | 4 | | 1970-01-01T00:00:08 |
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+----+-----+---------------------+----+-----+---------------------+
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-- JOIN with NULL-safe conditions
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SELECT * FROM null_left l INNER JOIN null_right r ON (l."id" = r."id" OR (l."id" IS NULL AND r."id" IS NULL)) ORDER BY l.ts;
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+----+-----+---------------------+----+-----+---------------------+
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| id | val | ts | id | val | ts |
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+----+-----+---------------------+----+-----+---------------------+
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| 1 | A | 1970-01-01T00:00:01 | 1 | X | 1970-01-01T00:00:05 |
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| | C | 1970-01-01T00:00:03 | | Y | 1970-01-01T00:00:06 |
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| 4 | D | 1970-01-01T00:00:04 | 4 | | 1970-01-01T00:00:08 |
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+----+-----+---------------------+----+-----+---------------------+
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DROP TABLE null_right;
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Affected Rows: 0
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DROP TABLE null_left;
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Affected Rows: 0
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