DOCUMENT:Q231894 06-JAN-2000 [foxpro] TITLE :HOWTO: Update a SQL Server Text Field Through a View PRODUCT :Microsoft FoxPro PROD/VER:WINDOWS:6.0 OPER/SYS: KEYWORDS:kbDatabase kbODBC kbSQLServ kbvfp600 KbDBFDBC kbVS600sp3 kbGrpDSFox kbDSupport kbCodeSn ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual FoxPro for Windows, version 6.0 ------------------------------------------------------------------------------- SUMMARY ======= There are specific settings necessary when updating a SQL Server text field using a Visual FoxPro Remote View if you are accessing the text field through a SQL Server View. NOTE: This only works correctly in Visual FoxPro 6.0 with Service Pack 3 installed. MORE INFORMATION ================ When setting up a remote view to a SQL Server view that has a text field in the SQL Server view, it is important to remember that there are specific settings that will make updating the text field fail. If you do not set the view property CompareMemo to Off, the following settings for the SQL Where Clause Includes causes an update to the text field to fail: - Key and Updateable Fields - Key and Modified Fields These settings succeed with the Compare Memo property set to true or false - Key Fields Only - Key and Timestamp When the text field is included in the Where clause, the SQL Server ODBC driver uses the WriteText update method. This method will not update a text field in a SQL View, and it returns the following error: Update Conflict At this point you can use the following command to clear the changes: ?TABLEREVERT(.T.) Sample: CLOSE DATABASES ALL SET SAFETY OFF CREATE DATABASE TextTest CREATE CONNECTION conn1 CONNSTRING 'driver=sql server;server=sphinxsql;' + ; 'database=pubs;uid=sa;pwd=' myconn=SQLCONNECT('conn1') IF myconn=-1 then MESSAGEBOX("Connection Failed") AERROR(myerr) DISPLAY MEMORY LIKE myerr RETURN ENDIF *!* Test for the view in SQL Server. *!* If it exists, drop it. iTestForView=sqlexec(myconn,"if exists (select * from sysobjects where name='test1'" + ; " and type = 'V')" + CHR(13) + ; " begin" + CHR(13) + ; " drop view test1" + CHR(13) + ; " end") *!* Test for the table in SQL Server. *!* If it exists, drop it and recreate it. iSucc=sqlexec(myconn,"if exists(select * from sysobjects where name='ttest')" + CHR(13) + ; " begin" + CHR(13) + ; " drop table ttest" + CHR(13) + ; " end" + CHR(13) + ; "create table dbo.ttest (ID char(10) primary key," + CHR(13) + ; " myTime timestamp,tnotes text)") IF iSucc=-1 then MESSAGEBOX('Create Table Failed') AERROR(myerr) DISPLAY MEMORY LIKE myerr SQLDISCONNECT(myconn) RETURN ENDIF MyNotes=REPLICATE('This is a test of the emergency broadcast system. ' + ; ' If this were an actual emergency, you would be told ' + ; ' where in your area to contact for news and additional ' + ; 'information.' ,50) + CHR(13) + CHR(10) + ; 'End of Original Memo'+ CHR(13) + CHR(10) iSucc=sqlexec(myconn,"insert into ttest (ID,tnotes) values ('1',?MyNotes)") IF iSucc=-1 then MESSAGEBOX("Insert Failed") AERROR(myerr) DISPLAY MEMO LIKE myerr sqldisconn(myconn) RETURN ENDIF iSucc=sqlexec(myconn,"create view dbo.test1 as select * from ttest") IF iSucc=-1 then MESSAGEBOX("Create View Failed") AERROR(myerr) DISPLAY MEMO LIKE myerr SQLDISCONNECT(myconn) RETURN ENDIF CREATE SQL VIEW MyTest REMOTE CONNECTION conn1 ; AS SELECT test1.ID,test1.tNotes FROM dbo.test1 DBSETPROP('Mytest','view','sendupdates',.T.) DBSETPROP('MyTest','view','WhereType',3) DBSETPROP('MyTest','view','tables','dbo.test1') DBSETPROP('mytest.id','field','keyfield',.T.) DBSETPROP('mytest.id','field','updatable',.T.) DBSETPROP('mytest.id','Field','updatename','dbo.test1.id') DBSETPROP('mytest.tnotes','Field','updatable',.T.) DBSETPROP('mytest.tnotes','Field','updatename','dbo.test1.tNotes') DBSETPROP('MyTest','view','CompareMemo',.F.) USE MyTest BROWSE NOWAIT UPDATE MyTest SET tNotes=tNotes + "This is added on to the end!" ?TABLEUPDATE() REQUERY() MODIFY MEMORY tNotes NOWAIT To see the error, please comment out the last DBSETPROP line: DBSETPROP('MyTest','view','CompareMemo',.F.) REFERENCES ========== For additional information on SQL Views in SQL Server, search the Index for "Views" in SQL Server Books Online. For additional information on Visual FoxPro Remote Views, search on "Remote Views" in the Index of Visual FoxPro Books Online. Additional query words: kbdse ====================================================================== Keywords : kbDatabase kbODBC kbSQLServ kbvfp600 KbDBFDBC kbVS600sp3 kbGrpDSFox kbDSupport kbCodeSnippet Technology : kbVFPsearch kbAudDeveloper kbVFP600 Version : WINDOWS:6.0 Issue type : kbhowto ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 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