[SQL] DELETE WHERE EXISTS unexpected results

[Jeff Bland]

I want to delete certain rows from table USER_TBL. 
Two tables are involved.  USER_TBL and OWNER_TBL. 

The entries that match BLAND type in OWNER table and who also have a 
matching entry in USER table NAME  but only for USER_TBL entries with 
places equal to HOME. 

DELETE FROM SP.TST_USER_TBL WHERE EXISTS
 (SELECT SP.TST_USER_TBL.NAME FROM SP.TST_USER_TBL, SP.TST_OWNER_TBL WHERE 
 TYPE='BLAND' AND PLACE='HOME'  AND 
SP.TST_OWNER_TBL.NAME=SP.TST_USER_TBL.NAME) 


Example :

        OWNER_TBL                               USER_TBL

   NAME   TYPE                  PLACE           NAME
BLAND           BLAND                   WORK            BLAND
LARRY           BLAND                   HOME            BLAND
MOE             BLAND                   HOME            LARRY
CURLY           BLAND                   WORK            LARRY
JOE             BLAND                   HOME            MOE


In the end I expect the USER_TBL to  not contain the 3  HOME  entries. 
But what is happening is the whole USER_TBL is empty after the query. 

Any ideas or tips..   Thanks.