postgres 9.1错误行号

Question

我在postgres 9.1中编写了一个强大的功能，并且处于调试阶段。这是我到目前为止的内容：

EXCEPTION WHEN others THEN

_ERRORMESSAGE = 'Error = ' || SQLERRM || SQLSTATE;  --datagrip doesn't know what these are, but that's ok

 --TODO: upon the upgrade to or past 9.2 get the error line number https://stackoverflow.com/questions/30631735/how-does-one-report-the-line-on-which-an-error-occured-in-postgres-plpgsql

     INSERT INTO hr.tbl_diagnostics_punch_proclog
                       (procexeid
                       ,create_datetime
                       ,employeeid
                       ,sqltext)
                    VALUES
                    (  _PROCEXEID
                      , current_timestamp
                      , _EmployeeId
                        , _ERRORMESSAGE
            );

我将运行该函数并从调试表中拉出，但不知道在哪里查找给定的错误。我可能会缺少一个变量吗？像SQLERRLINE之类的东西？