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Insert ADO recordset to table

Posted on 2014-03-11
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Last Modified: 2014-03-13
Hi,

I have a VBA that queries a database and gets a set of data into a recordset.  I need a way to copy this data into the table.   The recordset and the table both have a same structure (1 column) and the recordset is usually large (100,000 rows) and the table is cleared before it is filed with the data.

Any way I can do an insert that copies whole recordset into table?

I've seen lots of examples where we go through each recordset and do an insert, but due to the size, i can't imagine this method being efficient.
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Question by:iamnamja
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10 Comments
 
LVL 59
ID: 39920752
<<Any way I can do an insert that copies whole recordset into table? >>

  In short, no.    But what you can do is execute an INSERT with a SELECT based on the one you just used to get the record set.

Jim.
0
 

Author Comment

by:iamnamja
ID: 39920782
Hi Jim,

Could you give me an example of how this would work?


Here's my current code inserting line by line..

all_SQL = "SELECT distinct i.sid " & _
            "FROM common..idlist i"


Set all_RS = query_DB(globconn, all_SQL)

DoCmd.SetWarnings False
DoCmd.RunSQL "DELETE * FROM Latest_TIDs"
DoCmd.SetWarnings True

If all_RS.State <> 0 Then
    If Not (all_RS.EOF And all_RS.BOF) Then
        all_RS.MoveFirst
        DoCmd.SetWarnings False
        Do While Not all_RS.EOF
            DoCmd.RunSQL "INSERT INTO Latest_SIDs (sid) VALUES(""" & all_RS!sid.Value & """)"
            all_RS.MoveNext
        Loop
        DoCmd.SetWarnings True
    End If
End If

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0
 
LVL 59
ID: 39920882
all_SQL = "INSERT INTO Latest_SIDs ( SID ) SELECT distinct i.sid FROM common..idlist i"

CurrentDB.Execute all_SQL, dbFailOnError

This assumes the tables are available as linked tables as with CurrentDB().Execute or DoCmd.RunSQL, you are not using ADO to execute the query (linked tables use ODBC).

Jim.
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Author Comment

by:iamnamja
ID: 39920888
Hi Jim,

Unfortunately the tables are NOT linked - actually can't be linked, so i would need to query it the way I did above.  Does that mean the only method is the way that I have currently written?
0
 
LVL 59
ID: 39921082
<<Unfortunately the tables are NOT linked ->>

 I don't understand how your RunSQL works then.

Jim.
0
 
LVL 59
ID: 39921096
<<Does that mean the only method is the way that I have currently written? >>

 missed this...no, you can execute the SQL via ADO:

<connection object>.Execute all_SQL

Jim.
0
 

Author Comment

by:iamnamja
ID: 39921240
So just so that we're on the same page... The all_rs query is run on a sybase database and the recordset data fetched is what i need to store into my table called Latest_SIDs.

How do i run a query that inserts a data from a sybase database into access?
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LVL 59

Accepted Solution

by:
Jim Dettman (Microsoft MVP/ EE MVE) earned 2000 total points
ID: 39921632
ah, so Latest_SIDs  is local...now I understand the problem.

In that case, you will need to use the IN clause on the select statement to specify the external database.   With that, you must call an ODBC driver.   Basically, your doing a linked table on the fly.  Will look something like this:

all_SQL = "INSERT INTO Latest_SIDs ( SID ) SELECT distinct i.sid FROM common..idlist IN '' [ODBC; Driver={MySQL ODBC 5.2 ANSI Driver};Server=localhost;Database=myDataBase;
User=myUsername;Password=myPassword;Option=3;"

CurrentDB.Execute all_SQL, dbFailOnError

Your connection info will vary of course, but that's the jist of it.   You probably can do this with ADO as well, but off-hand I don't know how.

Jim.
0
 
LVL 40

Expert Comment

by:PatHartman
ID: 39921754
I don't understand why you can't link the table.  The link doesn't need to be permanent.  You can use TransferDatabase to link and then delete the link when you are done.
0
 
LVL 59
ID: 39921957
A linked table is faster performance wise too...

Jim.
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