Basic Query Operations (Filtering, Sorting, Grouping) Aggregate Functions (SUM, COUNT, MAX, MIN) Window Functions (RANK, DENSE_RANK, LEAD, LAG) Joins (INNER, LEFT ...

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Here are only a few functions to demonstrate how easy it is to write PL/pgSQL functions. For more complex examples the programmer might look at the regression test for PL/pgSQL.

PostgreSQL 14 added support for SQL-standard bodies in funcs and procs that are using BEGIN ATOMIC clauses. This function creation statement doesn't work in DBeaver: CREATE OR REPLACE FUNCTION ...