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what is use DUAL table. in oracal
Jan 20 '12 #1
1 2090
rajujrk
107 New Member
the dual table is used in Oracle when you need to run SQL that does not logically have a table name
Eg:

Expand|Select|Wrap|Line Numbers
  1. SELECT SYSDATE FROM DUAL;
  2.  
  3. SELECT extract(YEAR FROM DATE '2011-08-22') FROM DUAL;
  4.  
  5. SELECT TO_CHAR(SYSDATE, 'DD-MON-YYYY HH:MI:SS') FROM DUAL;
  6.  
Jan 20 '12 #2

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