How to Fix: Insert, on duplicate update in PostgreSQL?
Insert on duplicate update in PostgreSQL using the correct syntax.
📋 Table of Contents
Several months ago, you 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);You've now switched over to PostgreSQL and apparently this is not correct. It's referring to all the correct tables so you assume it's a matter of different keywords being used but you're not sure where in the PostgreSQL documentation this is covered.
💡 Why You Are Getting This Error
- The syntax you're using is specific to MySQL and not PostgreSQL.
✅ Best Solutions to Fix It
Method 1: Using the `INSERT OR REPLACE` Statement
- Step 1: Use the `INSERT OR REPLACE` statement instead of `ON DUPLICATE KEY UPDATE`.
Method 2: Using a `UNION` Statement
- Step 1: Use a `UNION` statement to combine multiple inserts into one query.
💡 Conclusion
By using the correct syntax and techniques, you can achieve your desired result in PostgreSQL. Make sure to read through the official documentation for more information.
❓ Frequently Asked Questions
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