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Asked: 2026-06-14T15:53:23+00:00

I was suppose to get all data from the table where the column Address

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I was suppose to get all data from the table where the column “Address” is not null
so I made a statement that look like this…

Select * from Table where Address is not null

Unfortunately, there are rows in “Address” column that has spaces so SQL cannot consider it as Null

How can I display rows where Address is not null?
Thanks 🙂

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1 Answer

  1. Editorial Team

    Most database systems have a NULLIF() function. It was defined together with COALESCE() in the ANSI SQL-99 standard if not earlier. It is implemented in at least SQL Server, Oracle, PostgreSQL, MySQL, SQLite, DB2, Firebird.

    Select * from Table where NULLIF(Address,'') is not null

    But for me, I like this more

    Select * from Table where Address > ''

    It kills nulls and empty strings in one go. It will even exclude strings that are made up entirely of spaces (”, ‘ ‘, etc). It also retains SARGability.

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