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Duplicate Records

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Execution time: 0,03 sec, rows selected: 12, rows affected: 8, absolute service time: 0,22 sec, absolute service time: 0,24 sec 
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   id name
1 1 A
2 2 B
3 3 B
4 4 C
5 5 C
6 6 D
7 7 E
8 8 F
   id name
1 2 B
2 3 B
3 4 C
4 5 C