bb0fad1dbe
* refactor: rename flinksql to flink * refactor: rename pgsql to postgresql * refactor: rename trinosql to trino * refactor: replace all default exports with named export * refactor: rename basicParser to basicSQL * refactor: rename basic-parser-types to types * refactor: replace arrow func with plain func
128 lines
3.5 KiB
SQL
128 lines
3.5 KiB
SQL
-- INNER Equi-JOIN
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SELECT *
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FROM Orders
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INNER JOIN Product
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ON Orders.product_id = Product.id;
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-- OUTER Equi-JOIN
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SELECT *
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FROM Orders
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LEFT JOIN Product
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ON Orders.product_id = Product.id;
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SELECT *
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FROM Orders
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RIGHT JOIN Product
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ON Orders.product_id = Product.id;
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SELECT *
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FROM Orders
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FULL OUTER JOIN Product
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ON Orders.product_id = Product.id;
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-- Interval Joins
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SELECT *
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FROM Orders o, Shipments s
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WHERE o.id = s.order_id
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AND o.order_time BETWEEN s.ship_time - INTERVAL '4' HOUR AND s.ship_time;
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SELECT *
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FROM Orders o, Shipments s
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WHERE o.id = s.order_id
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AND o.order_time = s.ship_time; -- ltime = rtime
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SELECT *
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FROM Orders o, Shipments s
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WHERE o.id = s.order_id
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AND o.order_time >= s.ship_time -- ltime >= rtime AND ltime < rtime + INTERVAL '10' MINUTE
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AND o.order_time < s.ship_time + INTERVAL '10' MINUTE;
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-- Temporal Joins
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SELECT
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order_id,
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price,
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orders.currency,
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conversion_rate,
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order_time
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FROM orders
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LEFT JOIN currency_rates FOR SYSTEM_TIME AS OF orders.order_time
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ON orders.currency = currency_rates.currency;
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SELECT
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o_amount, r_rate
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FROM
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Orders,
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LATERAL TABLE (Rates(o_proctime))
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WHERE
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r_currency = o_currency;
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-- Lookup Join
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SELECT o.order_id, o.total, c.country, c.zip
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FROM Orders AS o
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JOIN Customers FOR SYSTEM_TIME AS OF o.proc_time AS c
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ON o.customer_id = c.id;
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-- Table Function INNER JOIN
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SELECT order_id, res
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FROM Orders,
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LATERAL TABLE(table_func(order_id)) t(res);
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-- Table Function LEFT OUTER JOIN
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SELECT order_id, res
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FROM Orders
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LEFT OUTER JOIN LATERAL TABLE(table_func(order_id)) t(res)
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ON TRUE;
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-- Cross Join
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SELECT order_id, tag
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FROM Orders CROSS JOIN UNNEST(tags) AS t (tag)
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-- FULL OUTER Window Join
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SELECT L.num as L_Num, L.id as L_Id, R.num as R_Num, R.id as R_Id,
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COALESCE(L.window_start, R.window_start) as window_start,
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COALESCE(L.window_end, R.window_end) as window_end
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FROM (
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SELECT * FROM TABLE(TUMBLE(TABLE LeftTable, DESCRIPTOR(row_time), INTERVAL '5' MINUTES))
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) L
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FULL JOIN (
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SELECT * FROM TABLE(TUMBLE(TABLE RightTable, DESCRIPTOR(row_time), INTERVAL '5' MINUTES))
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) R
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ON L.num = R.num AND L.window_start = R.window_start AND L.window_end = R.window_end;
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-- Semi Window Joins
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SELECT *
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FROM (
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SELECT * FROM TABLE(TUMBLE(TABLE LeftTable, DESCRIPTOR(row_time), INTERVAL '5' MINUTES))
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) L WHERE L.num IN (
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SELECT num FROM (
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SELECT * FROM TABLE(TUMBLE(TABLE RightTable, DESCRIPTOR(row_time), INTERVAL '5' MINUTES))
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) R WHERE L.window_start = R.window_start AND L.window_end = R.window_end
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);
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SELECT *
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FROM (
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SELECT * FROM TABLE(TUMBLE(TABLE LeftTable, DESCRIPTOR(row_time), INTERVAL '5' MINUTES))
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) L WHERE L.num IN (
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SELECT num FROM (
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SELECT * FROM TABLE(TUMBLE(TABLE RightTable, DESCRIPTOR(row_time), INTERVAL '5' MINUTES))
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) R WHERE L.window_start = R.window_start AND L.window_end = R.window_end
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);
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-- Anti Window Joins
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SELECT *
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FROM (
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SELECT * FROM TABLE(TUMBLE(TABLE LeftTable, DESCRIPTOR(row_time), INTERVAL '5' MINUTES))
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) L WHERE L.num NOT IN (
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SELECT num FROM (
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SELECT * FROM TABLE(TUMBLE(TABLE RightTable, DESCRIPTOR(row_time), INTERVAL '5' MINUTES))
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) R WHERE L.window_start = R.window_start AND L.window_end = R.window_end
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);
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SELECT *
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FROM (
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SELECT * FROM TABLE(TUMBLE(TABLE LeftTable, DESCRIPTOR(row_time), INTERVAL '5' MINUTES))
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) L WHERE NOT EXISTS (
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SELECT * FROM (
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SELECT * FROM TABLE(TUMBLE(TABLE RightTable, DESCRIPTOR(row_time), INTERVAL '5' MINUTES))
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) R WHERE L.num = R.num AND L.window_start = R.window_start AND L.window_end = R.window_end
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); |