In SAS 9.1.3 Service Pack 4, using WHERE and BY statements in a procedure can result in incorrect output. When the WHERE clause is present, the first observation of the first BY group is corrupted.

For this problem to occur, the application must be doing BY processing, there must be a WHERE clause, and the application must include two passes over the entire data set.

Select the Hot Fix tab in this note to access the hot fix for this issue.

Operating System and Release Information

A fix for SAS 9.1.3 (9.1 TS1M3) for this issue is available at:

A fix for SAS 9.1.3 (9.1 TS1M3) with Asian Language Support (DBCS) for this issue is available at :