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ed17997449
* 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>
39 lines
1.2 KiB
Plaintext
39 lines
1.2 KiB
Plaintext
-- Tests self-join patterns
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CREATE TABLE employee_hierarchy(emp_id INTEGER, emp_name VARCHAR, manager_id INTEGER, level_num INTEGER, ts TIMESTAMP TIME INDEX);
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Affected Rows: 0
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INSERT INTO employee_hierarchy VALUES
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(1, 'CEO', NULL, 1, 1000), (2, 'CTO', 1, 2, 2000), (3, 'Dev1', 2, 3, 3000), (4, 'Dev2', 2, 3, 4000), (5, 'QA1', 2, 3, 5000);
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Affected Rows: 5
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SELECT e.emp_name as employee, m.emp_name as manager FROM employee_hierarchy e LEFT JOIN employee_hierarchy m ON e.manager_id = m.emp_id ORDER BY e.level_num, e.emp_id;
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+----------+---------+
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| employee | manager |
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+----------+---------+
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| CEO | |
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| CTO | CEO |
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| Dev1 | CTO |
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| Dev2 | CTO |
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| QA1 | CTO |
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+----------+---------+
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SELECT m.emp_name as manager, COUNT(e.emp_id) as direct_reports FROM employee_hierarchy m LEFT JOIN employee_hierarchy e ON m.emp_id = e.manager_id GROUP BY m.emp_id, m.emp_name ORDER BY direct_reports DESC, manager DESC;
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+---------+----------------+
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| manager | direct_reports |
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+---------+----------------+
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| CTO | 3 |
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| CEO | 1 |
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| QA1 | 0 |
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| Dev2 | 0 |
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| Dev1 | 0 |
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+---------+----------------+
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DROP TABLE employee_hierarchy;
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Affected Rows: 0
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