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SQL> select * from ta;
ID NAME
---------- --------------------
1 gorey
2 gorey2
SQL> select * from tb;
ID ADDRESS
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2 g2
3 g3
2 gorey2
SQL> select * from ta union select * from tb;
ID NAME
---------- --------------------
1 gorey
2 g2
2 gorey2
3 g3
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SQL> select * from ta intersect select * from tb;
ID NAME
---------- --------------------
2 gorey2
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SQL> select * from ta minus select * from tb;
ID NAME
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1 gorey
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SQL> select * from ta union all select * from tb;
ID NAME
---------- --------------------
1 gorey
2 gorey2
2 g2
3 g3
2 gorey2
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