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d8563ba56d
* feat: adds format, regex_extract function and more type tests Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix: forgot functions Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * chore: forgot null type Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * test: forgot date type Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * feat: remove format function Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * test: update results after upgrading datafusion Signed-off-by: Dennis Zhuang <killme2008@gmail.com> --------- Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
94 lines
1.9 KiB
Plaintext
94 lines
1.9 KiB
Plaintext
-- Migrated from DuckDB test: test/sql/sample/same_seed_same_sample.test
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-- FIXME: the results are wrong in this test, waits for https://github.com/apache/datafusion/pull/16325
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-- Test basic SAMPLE functionality
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-- Create test table
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CREATE TABLE test(x INTEGER, ts TIMESTAMP TIME INDEX);
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Affected Rows: 0
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-- Insert test data
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INSERT INTO test SELECT number, number * 1000 FROM numbers limit 10000;
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Affected Rows: 10000
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-- Test TABLESAMPLE with percentage
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SELECT COUNT(*) > 0 FROM test TABLESAMPLE (10 PERCENT);
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+---------------------+
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| count(*) > Int64(0) |
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+---------------------+
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| true |
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+---------------------+
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-- Test TABLESAMPLE with row count
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SELECT COUNT(*) FROM test TABLESAMPLE (100 ROWS);
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+----------+
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| count(*) |
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+----------+
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| 10000 |
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+----------+
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-- Test TABLESAMPLE SYSTEM
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SELECT COUNT(*) > 0 FROM test TABLESAMPLE SYSTEM (25 PERCENT);
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+---------------------+
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| count(*) > Int64(0) |
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+---------------------+
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| true |
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+---------------------+
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-- Test TABLESAMPLE BERNOULLI
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SELECT COUNT(*) > 0 FROM test TABLESAMPLE BERNOULLI (25 PERCENT);
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+---------------------+
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| count(*) > Int64(0) |
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+---------------------+
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| true |
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+---------------------+
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-- Test with REPEATABLE for consistent results
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SELECT COUNT(*) AS cnt1 FROM test TABLESAMPLE SYSTEM (10 PERCENT) REPEATABLE (42);
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+-------+
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| cnt1 |
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+-------+
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| 10000 |
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+-------+
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SELECT COUNT(*) AS cnt2 FROM test TABLESAMPLE SYSTEM (10 PERCENT) REPEATABLE (42);
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+-------+
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| cnt2 |
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+-------+
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| 10000 |
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+-------+
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-- Test sampling with WHERE clause
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SELECT COUNT(*) FROM test TABLESAMPLE (10 PERCENT) WHERE x > 5000;
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+----------+
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| count(*) |
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+----------+
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| 4999 |
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+----------+
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-- Test sampling with ORDER BY
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SELECT x FROM test TABLESAMPLE (5 ROWS) ORDER BY x LIMIT 5;
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+---+
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| x |
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+---+
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| 0 |
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| 1 |
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| 2 |
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| 3 |
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+---+
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-- cleanup
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DROP TABLE test;
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Affected Rows: 0
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