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CREATE TABLE YourTable ( Serial INT ); INSERT INTO YourTable VALUES (1), (2), (3), (4), (5), (6); WITH NumberedRows AS ( SELECT Serial, ROW_NUMBER() OVER (ORDER BY Serial) AS RowNumber FROM YourTable ) SELECT A.Serial AS Column1, B.Serial AS Column2 FROM NumberedRows A JOIN NumberedRows B ON A.RowNumber = B.RowNumber * -1 + (SELECT MAX(RowNumber) + 1 FROM NumberedRows) WHERE A.RowNumber <= (SELECT MAX(RowNumber) FROM NumberedRows) / 2;
Column1
Column2
1
6
2
5
3
4