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View Full Version : recordset



ebco
12-10-2004, 10:29 AM
mearge two queryies in one recordset

basically i have two difffrent recordset can i merge that into one?

raf
12-10-2004, 10:49 AM
maybe a bit more info or showing the querys to generate the recordsets...

if the number of fields are the same, then you can use a union. Like

(SELECT bla FROM table1) UNION (SELECT foo FROM table2)

Bullschmidt
12-31-2004, 02:19 AM
And don't know if a subquery approach might work.

Example of one query (QueryB) based on the results of another query (QueryA):

QueryA = "SELECT CustID FROM tblCUSTOMERS WHERE CustName = 'A%'"

QueryB = "SELECT CustID, CustName FROM tblCUSTOMERS WHERE CustID IN (" & QueryA & ")"

But the following is even faster and allows for more than one field to be returned in QueryA:

QueryB = "SELECT tblCUSTOMERS.CustID, CustName FROM (" & strSQLA & ") AS tblSQLA INNER JOIN tblCUSTOMERS ON tblSQLA.CustID = tblCUSTOMERS.CustID"

So QueryA would include all the CustID's for customers starting with A.

And QueryB would include more fields in the customers table (i.e. not just the CustID field) for the records returned in QueryA (which was the customers starting with A).

I suppose it wouldn't hurt to always use LEFT JOIN's in QueryB and build from the tblSQLA on the left to other tables that have fields you want to return.



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