sql - find set of row, duplicate list, before insert -
I have a table (this is a list of structures with 4 integers, first ID list id) < Pre> Now I need to put 4th list in this table But, it already exists (list id = 1) Other exists (idl = 2) does not exist. How to get a duplicate before entering the table Is the case (choose not in) Try this example: Disclaimer: In the example data that you provided lines 2 and 4, got a similar IDA, IDB, IDC set. If that column can not form a unique form and you have already got the taple in the copy table and you need a line per table per table per row, which makes Ill very difficult because in copy There is no way to tell the line for such a row in the original it is related. ID | IDL | IDA (empty). IDB (empty) | IDC1 | 1 | 2 | Empty | 1 2 | 1 | 4 | Empty | 1 3 | 1 | Empty | 1 | 1 4 | 2 | 2 | Empty | 1 5 | 2 | 4 | Empty | 1 6 | 3 | 6 | Empty | 1 7 | 3 | Empty | 4 | 1
idA | IDB | IDC2 | Empty | 1 4 | Empty | 1 tap 1 | 1
idA | IDB | IDC2 | Empty | 1 4 | Empty | 1
idA | IDB | IDC2 | Empty | 1 4 | Empty | 1 tap 7 | 1
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