Hi,
MySQL treats NULL, '' (empty string) as different.
I mean when I select from/insert into a table, its behaviour is
different.
Select * from table1 where name='';
is different from
Select * from table1 where name=NULL;
Similarly
Insert into table1(name) values('') is different from
Insert into table1(name) values(NULL)
Please suggest me here, how to overcome this '' (null string)
problem.
Scenario:
I have two tables, one is parent and one is child.
Child is referencing 3 fields in parent table.
Parent table records are empty. Now I am trying to insert into the child
table with '' (null string) values into these 3 fields (which are
referencing to the parent table). Actually insert into the child table
in this scenario should be successful, but I am not able to make it
success because of the problem described above ( Treatment of NULL, ''
are different).
Note: If the parent is not having any records, we can insert into the
child. BCS, in this case referential integrity won't work.
Ps: In oracle, it is not the case it treats NULL,'' as same.
Please suggest me how to proceed here.
Thanks,
Narasimha
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