In case you weren't aware that NOT EMPTY appears to be unable to use
Rushmore optimization...
There is a regular index on the order.srep field. I added the SETs to
emulate the environment per legacy code.
The results are why I changed the original author's NOT EMPTY(field1)
SQL to field1 <> "" instead:
CLEAR
OPEN DATABASE c:\temp\test SHARED
SET ANSI OFF
SET EXACT OFF
SET NEAR ON
LOCAL lcOpt as String
? SYS(3054,12,"lcOpt")
SELECT distinct srep FROM test!order WHERE srep <> "" INTO CURSOR crap
#IF .F.
Results:
SELECT distinct srep FROM test!order WHERE srep <> "" INTO CURSOR crap
Using index tag Srep to rushmore optimize table order
Rushmore optimization level for table order: partial
#ENDIF
SELECT distinct srep FROM test!order WHERE NOT EMPTY(srep) INTO CURSOR crap
#IF .F.
Results:
SELECT distinct srep FROM test!order WHERE NOT EMPTY(srep) INTO
CURSOR crap
Rushmore optimization level for table order: none
#ENDIF
--
Michael J. Babcock, MCP
Fox/VFP dev since 1997
Developer of FabNet estimating software - mbsoftwaresolutions.com
_______________________________________________
Post Messages to: ProFox@leafe.com
Subscription Maintenance: https://mail.leafe.com/mailman/listinfo/profox
OT-free version of this list: https://mail.leafe.com/mailman/listinfo/profoxtech
Searchable Archive: https://leafe.com/archives
This message:
https://leafe.com/archives/byMID/2208c725-f366-9e6a-b0d4-ae5417770...@mbsoftwaresolutions.com
** All postings, unless explicitly stated otherwise, are the opinions of the
author, and do not constitute legal or medical advice. This statement is added
to the messages for those lawyers who are too stupid to see the obvious.
