How to Insert or Update if Exists in PostgreSQL
How to Insert or Update if Exists in PostgreSQL

In database management, efficiently handling conditional data insertion or updating is a crucial task. This article explores multiple methods to achieve this in PostgreSQL. One of the methods we will discuss is using subqueries, INSERT ... ON CONFLICT (UPSERT), Common Table Expression (CTE), and PL/pgSQL functions. Each approach offers a distinct way to enhance data management within a PostgreSQL environment. Use Subquery to Insert or Update a Row if It Exists The subquery approach involves using a subquery within an SQL statement to conditionally perform an INSERT or UPDATE operation based on the existence of a record with a specific identifier (in this case, the id column).

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