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9dbf6dd8d0
* test: migrate window tests Signed-off-by: Dennis Zhuang <killme2008@gmail.com> * fix: blank line at the end Signed-off-by: Dennis Zhuang <killme2008@gmail.com> --------- Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
34 lines
1.2 KiB
SQL
34 lines
1.2 KiB
SQL
-- Migrated from DuckDB test: Multiple window tests with NULL handling
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-- Tests window functions with NULL values
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CREATE TABLE null_test("id" INTEGER, val INTEGER, ts TIMESTAMP TIME INDEX);
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INSERT INTO null_test VALUES
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(1, 100, 1000), (2, NULL, 2000), (3, 300, 3000), (4, NULL, 4000), (5, 500, 5000);
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-- Window functions with NULL values
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SELECT "id", val,
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ROW_NUMBER() OVER (ORDER BY val NULLS LAST) as row_num,
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RANK() OVER (ORDER BY val NULLS LAST) as rank_val
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FROM null_test ORDER BY "id";
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-- LEAD/LAG with NULL values
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SELECT "id", val,
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LAG(val, 1) OVER (ORDER BY "id") as prev_val,
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LEAD(val, 1) OVER (ORDER BY "id") as next_val
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FROM null_test ORDER BY "id";
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-- Aggregate window functions with NULL
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SELECT "id", val,
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SUM(val) OVER (ORDER BY "id" ROWS UNBOUNDED PRECEDING) as running_sum,
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COUNT(val) OVER (ORDER BY "id" ROWS UNBOUNDED PRECEDING) as running_count
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FROM null_test ORDER BY "id";
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-- FIRST_VALUE/LAST_VALUE with NULL
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SELECT "id", val,
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FIRST_VALUE(val) OVER (ORDER BY "id" ROWS UNBOUNDED PRECEDING) as first_val,
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LAST_VALUE(val) OVER (ORDER BY "id" ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) as last_val
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FROM null_test ORDER BY "id";
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DROP TABLE null_test;
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