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Update remote view & table buffering
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From
13/12/2000 04:26:12
 
 
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General information
Forum:
Visual FoxPro
Category:
Client/server
Title:
Update remote view & table buffering
Miscellaneous
Thread ID:
00452773
Message ID:
00452773
Views:
62
CREATE SQL VIEW VIEW1 REMOTE CONNECTION Connect1 AS SELECT * FROM TEST
INDEX ON ALLTRIM(Field1)+ALLTRIM(Field2) TAG key1 ADDITIVE
? CURSORSETPROP("Buffering", 5)
? CURSORSETPROP("Sendupdates", .T.)
FOR i=1 TO 5
	m.Field1="A"+ALLTRIM(STR(i))
	m.Field2="B"+ALLTRIM(STR(i))
	m.sumvalue=i
	IF NOT SEEK(m.Field1+m.Field2,"View1","Key1")
		INSERT INTO View1 FROM MEMVAR
	ELSE 	
		REPLACE View1.SumValue WITH View1.SumValue+1
	ENDIF
ENDFOR
? TABLEUPDATE(2,.T.)
While something like this works with row buffering and a TABLEUPDATE() right after the Insert or Replace, an ODBC error about not being able to insert empty rows in a views base table occurs with buffering=5.

Turning the thing around and issuing the CURSORSETPROP("Sendupdates", .T.)
after the tableupdate results in an invalid connection handle error.

With row buffering against a SQL Server 7.0 it´s just so slow, so I´d really like to do my local calculations on the view and then update the whole thing in one go.

How to do it, that´s the question?
Peter Pirker


Whosoever shall not fall by the sword or by famine, shall fall by pestilence, so why bother shaving?

(Woody Allen)
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