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A CASE expression returns a single value that is conditionally evaluated for each row of a table (or view). Use the WHEN-THEN clauses when you want to execute a CASE expression for some but not all of the rows in the table that is being queried or created.
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17 sty 2022 · We can use the CASE statement in SAS to create a new variable that uses case-when logic to determine the values to assign to the new variable. This statement uses the following basic syntax: proc sql; select var1, case when var2 = 'A' then 'North' when var2 = 'B' then 'South' when var2 = 'C' then 'East' else 'West' end as variable_name
In PROC SQL, you can use the CASE WHEN statement to perform conditional logic and manipulate data based on specified conditions. Let's understand the CASE WHEN statement in PROC SQL with examples. In simple words, the CASE WHEN statement in SAS is similar to IF-ELSE statements in terms of conditional logic. Both allow you to perform different ...
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17 cze 2024 · You can use a CASE expression as an item in the SELECT clause and as either operand in a SQL expression. Example The following two PROC SQL steps show two equivalent CASE expressions that create a character column with the strings in the THEN clause.
26 lut 2024 · Using case when in PROC SQL for Conditional Processing. In our SAS code, we can use case when expressions in PROC SQL for simple conditional processing, or complex conditional processing. Let’s say we have a dataset of information for a group of people.
The SQL procedure allows the identification and assignment of data values in a SELECT statement using case-expressions. This paper presents the power, and simplicity, of using case expressions to perform conditional processing in the SQL procedure.
