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Very Slow SQL , Why?
Message
De
31/07/1998 00:02:28
Rick Clarke
Fotobae Pty. Ltd.
Adelaide, Australie
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Divers
Thread ID:
00122940
Message ID:
00122955
Vues:
16
Hi Jim,

It is nice to know that the select should respect the condition of the set key even though I can tell perhaps you prefered it did not.

Why is it not doing so in my case, even at the command window where i can have better control proves me wrong on this one. e.g I sele maintable, set order to regions, then set key to "NORTH", BROW LAST and is quick as anything. When I the attempt to use a select * on the same table with the key set. I get the whole table in a result window of 120,000 rec's but the seting of the key to NORTH displays 23,000 records. What am I doing wrong?

I have an index on UPPER(REGION).
I have also used where region = "NORTH" and ... and ... etc...
But it takes several minutes to query, should this be the case.(P200MMX 64RAM)
I do not have an index on deleted() and set deleted is off.
I am selecing into a temp table that has no indexes. I could build one each time the select statement is run. This is a bit slow, creating an index on or reindexing the temp table, don't you think? then theres the last performance hit when I finally brow the temptable.

TIA Again!!!
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