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Use ADO to join a free dbf table with a table in dbc database.

Posted on 2001-07-24
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Last Modified: 2013-11-23
How can I use ADO to join a free table dbf with a table in the dbc database. ADO can only establish one connection, however the database and the free table are in different location. What can i do ??
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Question by:twong84
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8 Comments
 
LVL 12

Expert Comment

by:DRRYAN3
ID: 6313718
Create another ADO connection for your free table and open a recordset for the free table referencing your new ADO connection.
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Author Comment

by:twong84
ID: 6313824
Do you mean open the recordset for the free table referencing the old ADO connection for the database ???.
How can i reference to another ado connection ???
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LVL 12

Expert Comment

by:DRRYAN3
ID: 6313888
Are you trying to join the two tables into a single recordset with an SQL query?  If not, declare two connection objects:

dim strConnect as string
dim strSQL as string
dim cn1 as new adodb.connection
dim cn2 as new adodb.connection
dim rs1 as new adodb.recordset
dim rs2 as new adodb.recordset

strConnect = "Connection String for First Connection"
cn1.open strConnect
strConnect = "Connection String for Second Connection"
cn2.open strConnect

strSQL = "SELECT * FROM Table1"
rs1.open strSQL, cn1, adOpenForwardOnly, adLockReadOnly
strSQL = "SELECT * FROM Table2"
rs2.open strSQL, cn2, adOpenForwardOnly, adLockReadOnly

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Author Comment

by:twong84
ID: 6313904
Yes, I am trying to join two tables into a single recordset with an SQL query.
However, one table is a free table(dbf). Another table is in the dbc database.

Any suggestion ???
0
 

Author Comment

by:twong84
ID: 6313911
Yes, I am trying to join two tables into a single recordset with an SQL query.
However, one table is a free table(dbf). Another table is in the dbc database.

Any suggestion ???
0
 

Accepted Solution

by:
BlackShark earned 150 total points
ID: 6313958
ADD TABLE Command
Adds a free table to the current database.
ADD TABLE TableName | ?
  [NAME LongTableName]
i'm not sure odbc driver supports this, but you can try:
YourConnection.Execute("ADD TABLE YourTable")
0
 
LVL 12

Expert Comment

by:DRRYAN3
ID: 6313983
Still looking, but one suggestion is to use an Access MDB and link to the various DBF files.  Set your connection to the .MDB file and query away.  If you want to create this type of setup in code, see http://support.microsoft.com/support/kb/articles/Q230/5/88.ASP?LN=EN-US&SD=gn&FR=0&qry=tables&rnk=15&src=DHCS_MSPSS_gn_SRCH&SPR=ADO
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Author Comment

by:twong84
ID: 6314049
Thanks DRRYAN3, that's what in my mind too.
I appreciate alot for your help.
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