What is the use of case in sql server ?

Question

Anonymous User · Accepted Answer

"Where A CASE is the special scalar expression or conditional statement in the SQL language which returns a single value based on the evaluation of a statement. The Case statements can be used in Select and Where clauses and even an Order By clause. The Case expression is mostly used in SQL stored procedures or as a formula for a particular column, which optimizes the SQL statements. We'll start by walking through a simple case statement. The Case statement can be used in two forms in SQL Server: Case statement with a simple expression. Case statement with the comparison or searched expression. Case statement with the simple expression A Simple Case statement checks only for equivalent values and cannot contain Boolean expressions. The Simple Case statement looks for the first expression in the list of all when the clause that matches statement_1 and evaluates the corresponding when clause. Whether there is no match, then the else clause is evaluated."

Sarah Alfred · Answer

Very well described. Thanks for sharing it with the community

Anonymous User · Answer

Where A CASE is the special scalar expression or conditional statement in the SQL language which returns a single value based on the evaluation of a statement. The Case statements can be used in Select and Where clauses and even an Order By clause. The Case expression is mostly used in SQL stored procedures or as a formula for a particular column, which optimizes the SQL statements. We'll start by walking through a simple case statement. The Case statement can be used in two forms in SQL Server: Case statement with a simple expression. Case statement with the comparison or searched expression. Case statement with the simple expression A Simple Case statement checks only for equivalent values and cannot contain Boolean expressions. The Simple Case statement looks for the first expression in the list of all when the clause that matches statement_1 and evaluates the corresponding when clause. Whether there is no match, then the else clause is evaluated.

Rahul Roi · Answer

CASE is used to provide the if-then-else type of logic to SQL. There are two formats: The first is a Simple CASE expression, where we compare an expression to static values. The second is a Searched CASE expression, where we compare an expression to one or more logical conditions.

forum

What is the use of case in sql server ?

Can you answer this question?

3 Answers