|Rownumber |OldIdassigned |commoncode |
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| 1 |FLEX |Y2573F102 |
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| 2 |RCL |Y2573F102 |
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| 3 |FLEX |Y2573F102 |
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| 4 |QGEN |N72482123 |
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| 5 |QGEN |N72482123 |
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| 6 |QGEN |N72482123 |
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| 7 |RACE |N72482123 |
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| 8 |CLB |N22717107 |
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| 9 |CLB |N22717107 |
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<b>| 10 |CLB |N22717107 |
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我需要根据公共代码和条件删除重复记录 - 如果oldidassigned相同则删除else不删除.
例如Y2573F102有3个重复记录行1,2,3 .... 1,2不需要删除,只有第3行必须删除.