Proc Sql Case When Statement

If when condition is false then proc sql evaluates the next when condition until they are all evaluated.

Proc sql case when statement. If no else expression is present and every when condition is false then the result of the case expression is a missing value. The case statement goes through conditions and returns a value when the first condition is met like an if then else statement. If every when condition is false then proc sql executes the else expression and its result becomes the case expression s result. Proc sql case when statement posted 05 31 2019 03 52 pm 577 views in reply to umashankersaini calc min and max store name just 1st 3 letters per card.

So once a condition is true it will stop reading and return the result. If no else expression is present and every when conditionis false the result of the case expression is a missing. For example you can use case in statements such as select update delete and set and in clauses such as select list in where order by and having. If the when condition is true for the row that is being executed then the result expression that follows then is executed.

Set sql sql whereclause. If case operand equals when condition then the when clause is true. Case can be used in any statement or clause that allows a valid expression. The sql procedure supports conditionally selecting result values from rows in a table or view in the form of a case expression.

If when conditionis false proc sql evaluates the next when conditionuntil they are all evaluated. If there is no else part and no conditions are true it returns null. If no conditions are true it returns the value in the else clause. If every when condition is false then proc sql executes the else expression and its result becomes the case expression s result.

Similar to an if then construct in the data step a case expression uses one or more when then clause s to conditionally process some but not all the rows in a table. If no else expression is present and every when condition is false then the result of the case expression is a missing value. When conditionis false proc sql executes the else expression and its result becomes the case expression s result.