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Cascade Delete

lcor
lcor asked
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Last Modified: 2010-04-06
I'm trying to delete all blank values from a table..

SQLplus complains with the following sql statement.

delete from table_name where column_name=' ';

Integrity constraint violated.

I can't seem to find in the Oracle sql documentation instructions on how to form a cascade.

I need help in two ways
(1) what is the Oracle 9i Rel 2 sql statement that will perform the delete
(2)  Where can I get some decent documentation on Oracle SQL or SQL in general?  Can anyone recommend a good book?
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