Check Function exists or not postgres #functions

#postgresql #functions

Check Function exists or not PostgreSQL

In PostgreSQL, to check if a function exists, you can query the system catalog table pg_proc. This allows you to verify the presence of a specific function within the database. You typically use a SQL query for this purpose. If the query returns a result, the function exists; if it returns no result, the function does not exist. This check is crucial for ensuring that the required functions are available before using them in your database operations or application code.

Using case statement To print a message "exists" if the function exists and "not exists" if it doesn't, you can use a SQL query with a conditional expression

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