If is null sql oracle dateField is not null)) ) It works for the few tests I've been able to run against it. I cannot do the above cursor/query because if variableY is null it won't work because the comparison should be. This Oracle tutorial explains how to use the Oracle / PLSQL NULLIF function with syntax and examples. comは、オラクル、MS-SQL、MS-Access で使用可能か一目でわかるサイトです。 Jul 30, 2020 · HOW CAN I COMPARE NULL VALUES I have a trigger for recording the old and new values of the fields changed on a table. Because null represents a lack of data, a null cannot be equal or unequal to any value or to another null. @MarcoAurelioFernandezReyes '' <=> NULL in Oracle and NULL is perfectly valid value for number. This query finds all the rows storing null in volume_of_wood: select * from toys where volume_of_wood is null; Try it! Insert this incomplete query the editor. Feb 1, 2020 · ISNULL関数は、データ内に入っているNULLを他の値に変換する関数です。NULLが入っていると処理に問題があるときに、他の値に置き換える時などに使います。MS-SQL Server・MS-Accessで使用できます。ISNULL関数は、Oracle では扱えません。 Sep 26, 2024 · The IS NULL operator is a fundamental tool in PL/SQL used to determine the presence of NULL values in database columns. > (distinto); debemos utilizar los operadores "is null" (es igual a null) y "is not null" (no es null). Ver video. rydzvsblizeegkgdfrfqtmsryczoaeexqhljjxomoxcoiyowkvcjxcvbjezbbapaivsdxdzgynjzlpo