Modern SQL in PostgreSQL
Modern SQL in Open Source and Commercial DatabasesAI-enhanced description The document discusses advancements in SQL since SQL-92, highlighting features introduced in SQL:1999 such as lateral joins, grouping sets, and common table expressions (CTEs). It emphasizes the benefits of these features like simplifying complex queries, enhancing performance, and improving readability. The text also outlin
Insert, on duplicate update in PostgreSQL?
Several months ago I learned from an answer on Stack Overflow how to perform multiple updates at once in MySQL using the following syntax: INSERT INTO table (id, field, field2) VALUES (1, A, X), (2, B, Y), (3, C, Z) ON DUPLICATE KEY UPDATE field=VALUES(Col1), field2=VALUES(Col2); I've now switched over to PostgreSQL and apparently this is not correct. It's referring to all the correct tables so I
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