s=Select * From

 w=Where

 ins=Insert Into

 sc=Select Count(*) From

 pb=Partition By

 ob=Order By

 pl=/*+Parallel(20)*/

 ap=/*+Append*/

 apn=/*+append nologging*/

 c=Count(*)

 ct=Create Table

 tt=Truncate Table

 ei=Execute Immediate

 df=Delete From

 il=Is Null

 inn=Is Not Null

 at=Alter Table

 td=To_Date('','YYYY-MM-DD HH24:MI:SS')

 dt=Drop Table

 lg=Select * From t_log Order By start_time Desc

 gb=Group By

 fs=Select Tablespace_Name, Round(Sum(Bytes) / 1024 / 1024, 2) "Free(Mb)" From Dba_Free_Space Group By Tablespace_Name