> 原文:[https://www . geesforgeks . org/SQL-general-functions-nvl-nvl 2-decode-join-null if-lnnvl-nanvl/](https://www.geeksforgeeks.org/sql-general-functions-nvl ...
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 ...
SQL is a tool that is widely used in the manipulation of data and featuring in the relational database. They are applied in querying, manipulating as well as reporting data and it is commonly used by ...
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