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Understanding SQL Select
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General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Environment versions
Visual FoxPro:
VFP 9 SP1
Miscellaneous
Thread ID:
01385138
Message ID:
01385248
Views:
55
>Hi,
>
>Here is a pseudo SQL Select statement:
>
>
>select field1, field2, ... from Table1 left join Table2 on Table1.fieldX = Table2.fieldX where (Long Expression)
>
>
>From running this type of SQL Select and analyzing results, it seems to me that VFP will first do the LEFT JOIN and then apply the WHERE condition to the resulting query. Is this correct?
>
>My question is, how do you make the SQL Select to select records from Table1 based on the Long Expression and then LEFT JOIN the resulting query?

All conditions that you want to be evaluated before LEFT JOIN should be added to the LEFT JOIN.
--sb--
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