Open cursor

When the cursor command is TDS_CURSOR_OPENCMD, the client is executing the body of the cursor and generating a cursor result set. In response, the Gateway-Library transaction calls the following functions:

Function	Action
TDCURPRO	Determine the type of cursor command (OPEN, in this case).
TDNUMPRM	Retrieve the number of parameters associated with the cursor.
TDRCVPRM	Retrieve cursor parameters (once for each parameter).
TDCURPRO	Send the cursor status to the client.
TDESCRIB	Describe column results to the client (once for each column).
TDSETUDT	[optional] Set user datatype, if needed.
TDSNDDON	Send the reply to the client.
TDGETREQ	Retrieve the next part of the cursor request.