query is slow returning the result

Hello guys,

I have this query in access and it is slow to return the result.
I added some index but I could notice that its performance was not satisfactory.
CESTPAL has 880 rows
CADPAL has 7500 rows

Is there another way to do it where I can improve the result speed?

SELECT COUNT(*) AS TOTAL
FROM CADPAL AS A
WHERE A.CP_CODIGO IS NOT NULL
AND (A.CP_CODUSO="SI" OR A.CP_CODUSO='20')
AND EXISTS (Select C.CS_CODPAL FROM CESTPAL C
                     Where (C.CS_CODUSO="SI" or C.CS_CODUSO='20')
                     and  A.CP_CODIGO = C.CS_CODPAL
                     And C.CS_CODCESTA=51
);
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hidrauAsked:
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GRayLCommented:
What is slow?  Does this run any faster?

SELECT Count(*) as Total FROM CADPAL AS a INNER JOIN CESTPAL AS c ON a.CP_CODIGO = c.CS_CODPAL WHERE NOT IsNull(a.CP_CODIGO) AND (a.CP_CODUSO='SI' OR a.CP_CODUSO='20')
AND (c.CS_CODIGO='SI' OR c.CS_CODUSO='20') AND C.CS_CODESTA=51;

0

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hidrauAuthor Commented:
yeah, it ran faster,

I am using exists, what is faster "in" or "exists"?

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hidrauAuthor Commented:
thanks,
I changed my code.
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GRayLCommented:
Thanks, glad I could help.  As you can see, a subquery slows things down.
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Microsoft Access

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