Nested If Else In Case When Sql
Viewed 45k times. If the condition evaluates to False then T-SQL statements followed by ELSE keyword will be executed.
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Once either IF T-SQL statements or ELSE T-SQL statement is executed then other unconditional T-SQL statements continues execution.
Nested if else in case when sql. That said dont discount CASE. Select case when not FirstName IS NULL OR LenLtrimFirstName 0 AND LastName IS NULL OR LenLtrimLastName 0 AND DOB IS NULL then Criteria1 when not DOB IS NULL AND Id IS NULL. In this case I would tend to use the IN operator it is succinct.
Ask Question Asked 7 years 9 months ago. In these situation if you format the statement correctly the code is much easier to read than nested Boolean operators and it something you just cant do with IN alone. Using Nested IF ELSE statements in sql.
I find it extremely useful when working with more complex logic. How if and else works. So lets see an example on how to check for multiple conditions and replicate SQL CASE statement.
If the condition evaluates to True then T-SQL statements followed by IF condition in SQL server will be executed. Active 7 years 9 months ago. Like SQL case when statement and Swith if then else statement from popular programming languages Spark SQL Dataframe also supports similar syntax using when otherwise or we can also use case when statement.
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