Web Reference: Jan 18, 2026 · If a trigger performs an update on the same table, it can recursively fire itself. I avoid this by either using a BEFORE trigger that returns a modified row (no extra UPDATE), or by checking TG_OP and using a guard column. Apr 7, 2023 · They are highly customizable and can be created at the row, statement, or database level, allowing you to tailor their behavior to your specific needs. While triggers can be a powerful tool, they should be used judiciously to avoid negatively impacting database performance. I have a PostgreSQL database with a table called product. In this table I have an autoincrement column named auxId (not the table's primary key). I want to avoid any update on this column. How can ...
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