Problem Note 50801: Implicit pass-through processing might be disabled, resulting in performance issues
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A performance issue might occur when you run a query under the following conditions:
- A LIBNAME statement is used to access the database management system (DBMS) tables.
- DISTINCT is specified in the outermost SELECT clause.
- The query contains at least one inline view.
SAS® does not pass the query down to the DBMS. Instead, it pulls the data into SAS and does the processing of the query. This might result in the query taking longer to complete than if the entire query had been passed to the DBMS to be processed there.
To work around this issue, either break the query into multiple steps or use explicit pass-through processing.
Operating System and Release Information
| Product Family | Product | System | SAS Release | |
| Reported | Fixed* | |||
| SAS System | Base SAS | z/OS | 9.3 TS1M0 | |
| Z64 | 9.3 TS1M0 | |||
| Microsoft® Windows® for x64 | 9.3 TS1M0 | |||
| Microsoft Windows Server 2003 Datacenter Edition | 9.3 TS1M0 | |||
| Microsoft Windows Server 2003 Enterprise Edition | 9.3 TS1M0 | |||
| Microsoft Windows Server 2003 Standard Edition | 9.3 TS1M0 | |||
| Microsoft Windows Server 2003 for x64 | 9.3 TS1M0 | |||
| Microsoft Windows Server 2008 | 9.3 TS1M0 | |||
| Microsoft Windows Server 2008 R2 | 9.3 TS1M0 | |||
| Microsoft Windows Server 2008 for x64 | 9.3 TS1M0 | |||
| Microsoft Windows XP Professional | 9.3 TS1M0 | |||
| Windows 7 Enterprise 32 bit | 9.3 TS1M0 | |||
| Windows 7 Enterprise x64 | 9.3 TS1M0 | |||
| Windows 7 Home Premium 32 bit | 9.3 TS1M0 | |||
| Windows 7 Home Premium x64 | 9.3 TS1M0 | |||
| Windows 7 Professional 32 bit | 9.3 TS1M0 | |||
| Windows 7 Professional x64 | 9.3 TS1M0 | |||
| Windows 7 Ultimate 32 bit | 9.3 TS1M0 | |||
| Windows 7 Ultimate x64 | 9.3 TS1M0 | |||
| Windows Vista | 9.3 TS1M0 | |||
| Windows Vista for x64 | 9.3 TS1M0 | |||
| 64-bit Enabled AIX | 9.3 TS1M0 | |||
| 64-bit Enabled HP-UX | 9.3 TS1M0 | |||
| 64-bit Enabled Solaris | 9.3 TS1M0 | |||
| HP-UX IPF | 9.3 TS1M0 | |||
| Linux | 9.3 TS1M0 | |||
| Linux for x64 | 9.3 TS1M0 | |||
| Solaris for x64 | 9.3 TS1M0 | |||
A fix for this issue for Base SAS 9.4_M3 is available at:
https://tshf.sas.com/techsup/download/hotfix/HF2/V01.html#50801A fix for this issue for Base SAS 9.4_M2 is available at:
https://tshf.sas.com/techsup/download/hotfix/HF2/R19.html#50801A fix for this issue for Base SAS 9.3_M2 is available at:
https://tshf.sas.com/techsup/download/hotfix/HF2/I22.html#50801| Type: | Problem Note |
| Priority: | high |
| Date Modified: | 2013-09-05 11:38:48 |
| Date Created: | 2013-08-19 15:21:08 |