Constraint Check

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select 'select '||cc.column_name-
||' from '||c.owner||'.'||c.table_name-
||' a where not exists (select ''x'' from '-
||r.owner||'.'||r.table_name-
||' where '||rc.column_name||' = a.'||cc.column_name||')'
from dba_constraints c,
dba_constraints r,
dba_cons_columns cc,
dba_cons_columns rc
where c.constraint_type = 'R'
and c.owner not in ('SYS','SYSTEM')
and c.r_owner = r.owner
and c.owner = cc.owner
and r.owner = rc.owner
and c.constraint_name = cc.constraint_name
and r.constraint_name = rc.constraint_name
and c.r_constraint_name = r.constraint_name
and cc.position = rc.position
and c.owner = 'LDBO'
and c.table_name = 'CEXIST'
and c.constraint_name = 'CEXISTBOOK';


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