Error returns
If severe errors happen in the Tcl extension layer unrelated to ODBC, then
the Tcl invocation returns TCL_ERROR
. Otherwise, the Tcl
invocation returns TCL_OK
and sets the interpreter result
to the ODBC function return code in string form. For example, SQL_SUCCESS
. When the situation warrants, the Tcl application can then invoke
the SQLGetDiagRec function to retrieve error
information as a C application would.