Problem Note 65835: A series of PROC SQL queries might not generate a distinct set of rows
Under certain conditions, SQL procedure queries that contain the DISTINCT keyword do not generate output with unique rows as expected.
Typically, to encounter the problem, you must run a pair of queries that meet the following conditions:
- The first query uses CREATE VIEW syntax to create a view to a SAS data set and uses the DISTINCT keyword in the SELECT clause. If you use CREATE TABLE syntax, you do not encounter a problem.
- The first query that creates the view also needs to create a column that contains a constant value.
- The second query that generates the output data set needs to contain a non-summary function or a calculation such as the ROUND() or ABS() functions. If a function is not used, but is replaced with a calculation on a numeric variable, the problem also occurs. Ultimately, the issue appears when a numeric manipulation of the data occurs with a function or a calculation.
Click the Hot Fix tab in this note to access the hot fix for this issue.
Operating System and Release Information
| SAS System | Base SAS | z/OS | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| z/OS 64-bit | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft® Windows® for x64 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows 8 Enterprise 32-bit | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows 8 Enterprise x64 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows 8 Pro 32-bit | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows 8 Pro x64 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows 8.1 Enterprise 32-bit | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows 8.1 Enterprise x64 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows 8.1 Pro 32-bit | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows 8.1 Pro x64 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows 10 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows Server 2008 | 9.4_M1 | | 9.4 TS1M1 | |
| Microsoft Windows Server 2008 R2 | 9.4_M1 | | 9.4 TS1M1 | |
| Microsoft Windows Server 2008 for x64 | 9.4_M1 | | 9.4 TS1M1 | |
| Microsoft Windows Server 2012 Datacenter | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows Server 2012 R2 Datacenter | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows Server 2012 R2 Std | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Microsoft Windows Server 2012 Std | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Windows 7 Enterprise 32 bit | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Windows 7 Enterprise x64 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Windows 7 Home Premium 32 bit | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Windows 7 Home Premium x64 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Windows 7 Professional 32 bit | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Windows 7 Professional x64 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Windows 7 Ultimate 32 bit | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Windows 7 Ultimate x64 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| 64-bit Enabled AIX | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| 64-bit Enabled Solaris | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| HP-UX IPF | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Linux for x64 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
| Solaris for x64 | 9.4_M1 | 9.4_M6 | 9.4 TS1M1 | 9.4 TS1M6 |
*
For software releases that are not yet generally available, the Fixed
Release is the software release in which the problem is planned to be
fixed.
A set of PROC SQL queries that create a view, contain a constant column, contain a computed column, and a create a table do not generate a unique set of rows in the table that is created.
| Type: | Problem Note |
| Priority: | high |
| Date Modified: | 2020-04-28 11:39:06 |
| Date Created: | 2020-04-10 09:32:59 |
