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Subject: FreeTDS Development Group
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- From: Sebastien FLAESCH <sf AT 4js.com>
- To: FreeTDS Development Group <freetds AT lists.ibiblio.org>
- Subject: [freetds] Supporting fast forward-only cursors?
- Date: Thu, 10 Jan 2008 14:57:06 +0100
So far I have one remaining "FIXME" comment in my FreeTDS driver interface,
regarding fast forward cursors...
With the native MSSQL ODBC drivers, when you set:
r = SQLSetStmtAttr(st->stmtHandle, SQL_SOPT_SS_CURSOR_OPTIONS, (SQLPOINTER)
SQL_CO_FFO, SQL_IS_UINTEGER);
You get fast forward-only cursors, as described in:
http://msdn2.microsoft.com/en-us/library/aa172573.aspx
Note this is a SQL Server 2000 feature...
Other link:
http://msdn2.microsoft.com/en-us/library/aa177106(SQL.80).aspx
I was wondering how difficult it would be to support this MSSQL specific
statement attribute...
If it's just a matter of sp_cursoroption, then you should...
Attached a sample (must compile with -D USE_FAST_FOWARD to use FFO cursor)
I noticed that SQL Profiler should different values in the @p5 and @p6
parameters of the sp_cursorprepexec() call:
With FFO:
@p5=16
@p6=1
With SQL_NONSCROLLABLE / SQL_SENSITIVE:
@p5=4
@p6=4
Tested with SQL Server 2005 ...
Thanks!
Seb
-
[freetds] Supporting fast forward-only cursors?,
Sebastien FLAESCH, 01/10/2008
-
Re: [freetds] Supporting fast forward-only cursors?,
ZIGLIO, Frediano, VF-IT, 01/11/2008
- Re: [freetds] Supporting fast forward-only cursors?, Sebastien FLAESCH, 01/11/2008
- Re: [freetds] Supporting fast forward-only cursors?, James K. Lowden, 01/11/2008
-
Re: [freetds] Supporting fast forward-only cursors?,
ZIGLIO, Frediano, VF-IT, 01/11/2008
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