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sql-general-functions-nvl-nvl2-decode-coalesce-nullif-lnnvl-nanvl.md

在本文中，我们将讨论一些强大的 SQL 通用函数，它们是——NVL 函数、NVL2 函数、DECODE 函数、聚结函数、NULLIF 函数、LNNVL ...
GitHub

README.md

This repository contains a custom PostgreSQL function called decode_custom, which emulates the behavior of the DECODE function in Oracle. This function allows performing comparisons and returning ...