PROC SQL supports the remerging of summary function results into the table's original data. For example, computing the percentage of total is achieved with 100* x /SUM (x) in PROC SQL.

PROC SQL supports the same SAS functions as the DATA step, except for the functions LAG, DIF, and SOUND. For example, the SCAN function is used in the following query: select style, scan (street,1) ...

Why Use Stored Procedures and Functions? Complex Logic: If you have complicated SQL operations — like multiple joins or conditional logic — stored procedures can help organize your code.

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