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Records: 4  Duplicates: 0  Warnings: 0
id pos
1 1
3 2
2 3
4 4
Duplicate entry '3' for key 'test.pos'
id pos
1 1
3 2
2 3
4 4
Records: 3  Duplicates: 3  Warnings: 1
id pos
1 1
2 2
3 3
4 4