Problem Note 71028: Trying to subset a database table based on another database table can result in poor performance
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Trying to subset a database table based on another table might result in slow performance. This issue occurs due to an invalid query being built and passed to the database for execution when the following are true:
- You use the FEDSQL procedure.
- You use the NOT EXISTS component to subset the table.
- The database table that is used to subset the other table contains at least 64 variables.
- You use implicit pass-through.
The workaround is to use explicit pass-through where you can write the exact query to pass to the database.
Click the Hot Fix tab in this note to access the hot fix for this issue.
Operating System and Release Information
| Product Family | Product | System | SAS Release | |
| Reported | Fixed* | |||
| SAS System | Base SAS | z/OS | 9.3 TS1M2 | |
| z/OS 64-bit | 9.3 TS1M2 | |||
| Microsoft® Windows® for x64 | 9.3 TS1M2 | |||
| Microsoft Windows 8 Enterprise 32-bit | 9.3 TS1M2 | |||
| Microsoft Windows 8 Enterprise x64 | 9.3 TS1M2 | |||
| Microsoft Windows 8 Pro 32-bit | 9.3 TS1M2 | |||
| Microsoft Windows 8 Pro x64 | 9.3 TS1M2 | |||
| Microsoft Windows 8.1 Enterprise 32-bit | 9.3 TS1M2 | |||
| Microsoft Windows 8.1 Enterprise x64 | 9.3 TS1M2 | |||
| Microsoft Windows 8.1 Pro 32-bit | 9.3 TS1M2 | |||
| Microsoft Windows 8.1 Pro x64 | 9.3 TS1M2 | |||
| Microsoft Windows Server 2003 Datacenter Edition | 9.3 TS1M2 | |||
| Microsoft Windows Server 2003 Enterprise Edition | 9.3 TS1M2 | |||
| Microsoft Windows Server 2003 Standard Edition | 9.3 TS1M2 | |||
| Microsoft Windows Server 2003 for x64 | 9.3 TS1M2 | |||
| Microsoft Windows Server 2008 | 9.3 TS1M2 | |||
| Microsoft Windows Server 2008 R2 | 9.3 TS1M2 | |||
| Microsoft Windows Server 2008 for x64 | 9.3 TS1M2 | |||
| Microsoft Windows Server 2012 Datacenter | 9.3 TS1M2 | |||
| Microsoft Windows Server 2012 R2 Datacenter | 9.3 TS1M2 | |||
| Microsoft Windows Server 2012 R2 Std | 9.3 TS1M2 | |||
| Microsoft Windows Server 2012 Std | 9.3 TS1M2 | |||
| Microsoft Windows XP Professional | 9.3 TS1M2 | |||
| Windows 7 Enterprise 32 bit | 9.3 TS1M2 | |||
| Windows 7 Enterprise x64 | 9.3 TS1M2 | |||
| Windows 7 Home Premium 32 bit | 9.3 TS1M2 | |||
| Windows 7 Home Premium x64 | 9.3 TS1M2 | |||
| Windows 7 Professional 32 bit | 9.3 TS1M2 | |||
| Windows 7 Professional x64 | 9.3 TS1M2 | |||
| Windows 7 Ultimate 32 bit | 9.3 TS1M2 | |||
| Windows 7 Ultimate x64 | 9.3 TS1M2 | |||
| Windows Vista | 9.3 TS1M2 | |||
| Windows Vista for x64 | 9.3 TS1M2 | |||
| 64-bit Enabled AIX | 9.3 TS1M2 | |||
| 64-bit Enabled HP-UX | 9.3 TS1M2 | |||
| 64-bit Enabled Solaris | 9.3 TS1M2 | |||
| HP-UX IPF | 9.3 TS1M2 | |||
| Linux | 9.3 TS1M2 | |||
| Linux for x64 | 9.3 TS1M2 | |||
| Solaris for x64 | 9.3 TS1M2 | |||
| SAS System | SAS Viya 3.x | Microsoft® Windows® for x64 | ||
| Linux for x64 | ||||
| SAS System | SAS Viya platform | Linux for x64 | Viya platform | |
A fix for this issue for SAS Threaded Kernel DS2 and FedSQL Language Processors 9.41_M5 is available at:
https://tshf.sas.com/techsup/download/hotfix/HF2/I9H.html#71028| Type: | Problem Note |
| Priority: | high |
| Date Modified: | 2024-11-05 16:06:51 |
| Date Created: | 2024-10-31 13:04:30 |