dbretlen

Determines the length of a return-parameter value generated by a stored procedure or a remote stored procedure.

Syntax

DBINT dbretlen (
PDBPROCESS dbproc,
INT retnum );

where

dbproc

Is the DBPROCESS structure that is the handle for a particular workstation/ SQL Server process. It contains all the information that DB-Library uses to manage communications and data between the workstation and SQL Server.

retnum

Is the number of the returned value of interest. The first return value is number 1. Values are returned in the same order as the parameters were originally specified in the stored procedure's CREATE PROCEDURE statement. (Note that this is not necessarily the same order as that specified in the remote stored procedure.) When specifying retnum, non-return parameters are not counted. For example, if the second parameter in a stored procedure is the only return parameter, its retnum is 1, not 2.

Returns

The length of the specified returned value. If retnum is out of range, dbretlen returns -1. If the return value is null, dbretlen returns 0.

Remarks

For more information about stored procedure return parameters, see "dbretdata."

The server returns stored procedure information (including any return status and parameter values) immediately after returning all normal results for that stored procedure. Process the normal results, and then call dbretlen after dbresults returns NO_MORE_RPC_RESULTS (for all stored procedures in a batch except the last one) or NO_MORE_RESULTS (for a single stored procedure, or for the last stored procedure in a batch).

See Also

dbnextrow, dbnumrets, dbresults, dbretdata, dbretname, dbrettype, dbrpcinit, dbrpcparam