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Outer join syntax
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08/08/2000 00:19:10
 
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Base de données, Tables, Vues, Index et syntaxe SQL
Divers
Thread ID:
00401726
Message ID:
00402095
Vues:
25
Hi Larry,

That's great. Just one more small clarification. Will there be any performance degradation using this way? Thanks

>I believe the following will work in both:
>SELECT field1, field2, mytable2.field3 FROM mytable1,mytable2 ;
> where mytable1.field1 = mytable2.field1
>UNION
>SELECT field1, field2, ' ' as field3 FROM mytable1 ;
> where mytable1.field1 not in (select mytable2.field1 from mytable2)

>You have to go back to the days before we had outer joins in VFP.
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