Sql Case Statement when is not null - Stack Overflow
Feb 1, 2012 · CASE x WHEN null THEN is the same as CASE WHEN x = null THEN. But nothing equals null in that way. This means that you are always getting the ELSE part of your CASE …
T-SQL CASE Clause: How to specify WHEN NULL - Stack Overflow
I wrote a T-SQL Statement similar like this (the original one looks different but I want to give an easy example here): SELECT first_name + CASE last_name WHEN null THEN 'Max' ELSE …
sql server - CASE statement with IS NULL and NOT NULL
Is there any better way to write the lines below in SQL Server 2005? CASE WHEN (ID IS NULL) THEN 'YES' WHEN (ID IS NOT NULL) THEN 'NO' END AS ID_Value,
sql - CASE Statement using IS NULL and IS NOT NULL - Stack …
Jan 27, 2017 · 2 I'm building a new SQL table and I'm having some trouble with a CASE statement that I can't seem to get my head around. I have two different clauses to be met …
mysql - Conditional NOT NULL case SQL - Stack Overflow
You need to have when reply.replies IS NOT NULL NULL is a special case in SQL and cannot be compared with = or <> operators. IS NULL and IS NOT NULL are used instead.
Microsoft SQL: CASE WHEN vs ISNULL/NULLIF - Stack Overflow
Nov 3, 2009 · To answer the titled question: NULLIF is implemented as a CASE WHEN so it's possible to formulate a CASE WHEN that performs identically in both timing and results. …
sql server - Using IS NULL in CASE Expression in WHERE Clause ...
Aug 1, 2017 · I have a WHERE clause that I want to use a CASE expression in. However, my CASE expression needs to check if a field IS NULL. If the @UserRole variable value = …
postgresql - case when null evaluates to false - Stack Overflow
Aug 17, 2015 · Today I was surprised by this case behaviour: select case when null then true else false end; case ------ f I would expect it to return null since a null casted to boolean yelds a null …
sql - check for null date in CASE statement, where have I gone …
Mar 16, 2010 · Id StartDate 1 (null) 2 12/12/2009 3 10/10/2009 I want to create a select statement, that selects the above, but also has an additional column to display a varchar if the …
SQL - Using CASE statement with multiple IS NULL, IS NOT NULL
Jul 28, 2021 · I'm having difficulties writing a case statement with multiple IS NULL, NOT NULL conditions. I have the case statement below, however the third condition (WHEN ID IS NOT …