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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>
66 lines
2.2 KiB
SQL
66 lines
2.2 KiB
SQL
-- Migrated from DuckDB test: test/sql/join/left_outer/ pattern tests
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-- Tests common left join patterns
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CREATE TABLE accounts(acc_id INTEGER, acc_name VARCHAR, balance DOUBLE, ts TIMESTAMP TIME INDEX);
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CREATE TABLE transactions(txn_id INTEGER, acc_id INTEGER, amount DOUBLE, txn_type VARCHAR, txn_date DATE, ts TIMESTAMP TIME INDEX);
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INSERT INTO accounts VALUES
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(1, 'Checking', 1500.00, 1000), (2, 'Savings', 5000.00, 2000),
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(3, 'Credit', -250.00, 3000), (4, 'Investment', 10000.00, 4000);
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INSERT INTO transactions VALUES
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(1, 1, -100.00, 'withdrawal', '2023-01-01', 1000),
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(2, 1, 500.00, 'deposit', '2023-01-02', 2000),
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(3, 2, 1000.00, 'deposit', '2023-01-01', 3000),
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(4, 3, -50.00, 'purchase', '2023-01-03', 4000),
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(5, 1, -25.00, 'fee', '2023-01-04', 5000);
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-- Left join to find accounts with/without transactions
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SELECT
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a.acc_name, a.balance,
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COUNT(t.txn_id) as transaction_count,
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COALESCE(SUM(t.amount), 0) as total_activity
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FROM accounts a
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LEFT JOIN transactions t ON a.acc_id = t.acc_id
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GROUP BY a.acc_id, a.acc_name, a.balance
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ORDER BY transaction_count DESC;
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-- Left join with date filtering
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SELECT
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a.acc_name,
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COUNT(t.txn_id) as recent_transactions,
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SUM(CASE WHEN t.amount > 0 THEN t.amount ELSE 0 END) as deposits,
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SUM(CASE WHEN t.amount < 0 THEN t.amount ELSE 0 END) as withdrawals
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FROM accounts a
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LEFT JOIN transactions t ON a.acc_id = t.acc_id AND t.txn_date >= '2023-01-02'
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GROUP BY a.acc_id, a.acc_name
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ORDER BY recent_transactions DESC, a.acc_name ASC;
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-- Left join NULL handling
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SELECT
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a.acc_name,
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a.balance,
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t.txn_id,
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COALESCE(t.amount, 0) as transaction_amount,
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CASE WHEN t.txn_id IS NULL THEN 'No Activity' ELSE 'Has Activity' END as status
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FROM accounts a
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LEFT JOIN transactions t ON a.acc_id = t.acc_id
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ORDER BY a.acc_id, t.txn_date;
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-- Left join with complex conditions
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SELECT
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a.acc_name,
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COUNT(large_txn.txn_id) as large_transaction_count,
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AVG(large_txn.amount) as avg_large_amount
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FROM accounts a
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LEFT JOIN (
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SELECT * FROM transactions WHERE ABS(amount) > 100.00
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) large_txn ON a.acc_id = large_txn.acc_id
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GROUP BY a.acc_id, a.acc_name
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ORDER BY large_transaction_count DESC, a.acc_name ASC;
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DROP TABLE accounts;
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DROP TABLE transactions;
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