Sunday, 21 February 2016

SOME IMPORTANT COMMANDS


  • cl  scr:    It is a SQL*PLUS  command which is used to clear the screen.
  • desc/describe:  This command is used to show the structure of the table.
                                  SYNTAX: desc <table_name>
NOTE: The difference between SQL & SQL*PLUS is "Every command in SQL ends with                               semicolon where as in SQL*PLUS command no need to end with semicolon.
NOTE: We can change SQL prompt name as following
             1.Initially it is SQL>
             2.Now I want to change SQL> as PRAVEEN>
             3.Then write command as 
             4.SQL> set SQLPROMPT PRAVEEN> & then press enter
             5.here we go with 
             6.PRAVEEN> 

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