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 …
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 …
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,
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. …
Using a Case Statement With IS NULL and IS NOT NULL
Jun 5, 2021 · SELECT userid, userName, CASE userName WHEN (userName IS NULL) THEN 'was null' WHEN (userName IS NOT NULL) THEN 'was not null' END AS caseExpressionTest …
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 …
sql - Oracle case when NOT null? - Stack Overflow
To add to Alex's answer: The CASE expression has two forms, the "simple" CASE expression and the "searched" CASE expression. In a "simple" CASE expression you compare one …