It shouldn't, because comparison to NULL returns "NULL", not TRUE or FALLS
If you want, you need: select * from tester2 where whatever not like '%STU%' or whatever IS NULL; Igor Neyman, OCP DBA [EMAIL PROTECTED] ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <[EMAIL PROTECTED]> Sent: Thursday, January 30, 2003 12:41 PM > Can anyone explain why it is that I seem unable to use 'like' and 'not like' > on columns containing null values. (I am unable to find information > regarding this on MetaLink.) > > For example: > > SQL> select * from tester2; > > COL1 COL2 WHATEVER > ---- ---- -------- > 1 1 STUFF > 2 2 STUFF > 3 3 > 4 4 > > SQL> select * from tester2 where whatever not like '%STU%'; > no rows selected > > > My question is why does this not return the 3 & 4 columns? > > _________________________________________________________________ > MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*. > http://join.msn.com/?page=features/virus > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Gary Jackson > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Igor Neyman INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
