Problem Note 44189: Poor performance might occur when you subset against a DB2 binary (raw/bit) data type
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Currently, SAS® does not pass WHERE clauses against binary data types to DB2. Instead, data is read into SAS and processed there. This can lead to poor performance for larger tables.
For example, the following SQL reads the entire table into SAS if the DB2 "rawcol" column has been defined as binary:
PROC SQL;
SELECT * FROM db2.table WHERE rawcol = '00AAFF'x;
QUIT;
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 | SAS/ACCESS Interface to DB2 | Microsoft® Windows® for 64-Bit Itanium-based Systems | 9.2 TS2M3 | 9.2 TS2M3 |
| Microsoft Windows Server 2003 Datacenter 64-bit Edition | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Microsoft Windows Server 2003 Enterprise 64-bit Edition | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Microsoft Windows XP 64-bit Edition | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Microsoft® Windows® for x64 | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Microsoft Windows Server 2003 Datacenter Edition | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Microsoft Windows Server 2003 Enterprise Edition | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Microsoft Windows Server 2003 Standard Edition | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Microsoft Windows Server 2003 for x64 | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Microsoft Windows Server 2008 | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Microsoft Windows Server 2008 for x64 | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Microsoft Windows XP Professional | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Windows 7 Enterprise 32 bit | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Windows 7 Enterprise x64 | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Windows 7 Home Premium 32 bit | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Windows 7 Home Premium x64 | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Windows 7 Professional 32 bit | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Windows 7 Professional x64 | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Windows 7 Ultimate 32 bit | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Windows 7 Ultimate x64 | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Windows Vista | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Windows Vista for x64 | 9.2 TS2M3 | 9.2 TS2M3 | ||
| 64-bit Enabled AIX | 9.2 TS2M3 | 9.2 TS2M3 | ||
| 64-bit Enabled HP-UX | 9.2 TS2M3 | 9.2 TS2M3 | ||
| 64-bit Enabled Solaris | 9.2 TS2M3 | 9.2 TS2M3 | ||
| HP-UX IPF | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Linux | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Linux for x64 | 9.2 TS2M3 | 9.2 TS2M3 | ||
| Solaris for x64 | 9.2 TS2M3 | 9.2 TS2M3 | ||
A fix for this issue for Base SAS 9.3_M2 is available at:
https://tshf.sas.com/techsup/download/hotfix/HF2/I22.html#44189
SAS does not pass WHERE clauses against binary data types to DB2. Instead, data is being read into SAS and processed there.
| Type: | Problem Note |
| Priority: | medium |
| Date Modified: | 2013-05-23 12:04:42 |
| Date Created: | 2011-09-02 04:57:16 |