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INTERSECT
Message
From
15/07/2000 13:10:45
Walter Meester
HoogkarspelNetherlands
 
 
To
15/07/2000 09:36:38
General information
Forum:
Visual FoxPro
Category:
Databases,Tables, Views, Indexing and SQL syntax
Title:
Miscellaneous
Thread ID:
00392861
Message ID:
00392892
Views:
10
Grigore,

>Please, can anyone tell me how can I simulate INTERSECT clause of an SQL interogation?


SELECT * FROM Table1 UNION Select * FROM Table2 INTO CURSOR x
SELECT * FROM x UNION ALL SELECT * FROM Table3 INTO CURSOR y
SELECT * FROM Y GROUP BY allfields... HAVING COUNT(*) = 2

would produce the desired result if in each table there is an existing primary key (so multiple exact same records cannot exist in one table).

I have not tried it, but you might be able to combine statement 2 and 3 to:

SELECT * FROM x UNION ALL SELECT * FROM Table3 GROUP BY allfields... HAVING COUNT (*) = 2

Hope this helps

Walter,
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