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| SQL> with t1 as (select 1 as id, 'a' as c from dual
union all select 2, 'b' from dual
union all select 1, 'e' from dual),
t2 as (select 1 as id, 'c' as c from dual
union all select 3, 'd' from dual)
select id,c from t1
minus
select id,c from t2
/
ID C
---------- -
1 a
1 e
2 b
SQL> with t1 as (select 1 as id, 'a' as c from dual
union all select 2, 'b' from dual
union all select 1, 'e' from dual),
t2 as (select 1 as id, 'c' as c from dual
union all select 3, 'd' from dual)
select id from t1
minus
select id from t2
/
ID
----------
2
SQL> with t1 as (select 1 as id, 'a' as c from dual
union all select 2, 'b' from dual
union all select 1, 'e' from dual),
t2 as (select 2 as id, 'c' as c from dual
union all select 3, 'd' from dual)
select id from t1
minus
select id from t2
/
ID
----------
1 |
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