[20250805]建立完善descv.sql脚本.txt

--//遇到一点点小问题做一个改动。
SCOTT@book01p> @ descv sys.getlong ''
FUNCTION sys.getlong RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
FUNCTION sys.getlong RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 OPCODE                         NUMBER                  IN
 P_ROWID                        ROWID                   IN

SCOTT@book01p> @ descv sys.getlong rowid
FUNCTION sys.getlong RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 P_ROWID                        ROWID                   IN
--//丢失了分割线，修改如下：

$ cat descv.sql
set linesize 80
set term off
spool tmpdesc.txt
desc &1
spool off
set term on
set linesize 269
host sed -n '1,/----------/p' tmpdesc.txt ; egrep -i "&2" tmpdesc.txt
--host &_DELETE tmpdesc.txt

SCOTT@book01p> @ descv sys.getlong rowid
FUNCTION sys.getlong RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 P_ROWID                        ROWID                   IN

SCOTT@book01p> @ descv sys.getlong ''
FUNCTION sys.getlong RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
FUNCTION sys.getlong RETURNS VARCHAR2
 Argument Name                  Type                    In/Out Default?
 ------------------------------ ----------------------- ------ --------
 OPCODE                         NUMBER                  IN
 P_ROWID                        ROWID                   IN