Database Administration (MOSC)

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Is there any diff

edited Sep 18, 2009 7:04PM in Database Administration (MOSC) 3 commentsAnswered
 Hi,
what is the difference??

SQL> SELECT COUNT(*) FROM tbl_setmnt WHERE SERVICETRAFFIC='';

  COUNT(*)
----------
         0

SQL> SELECT COUNT(*) FROM tbl_setmnt WHERE SERVICETRAFFIC IS NULL;

  COUNT(*)
----------
      1238
regards,
Naresh

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