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

> 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 ...
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exe5 decode method.sql

last year is from ADD_MONTHS(sysdate, -12) to sysdate. last 2 days is from sysdate-2 to sysdate. In http://ojtserver/twiki/bin/view/Main/PoDBeyondEquality, there is a ...