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Developer-C 11.1
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CREATE TABLE two_column_order ( legacyRank VARCHAR(45), forcedRank VARCHAR(45) ); INSERT INTO two_column_order (legacyRank, forcedRank) VALUES (5, NULL); INSERT INTO two_column_order (legacyRank, forcedRank) VALUES (6, 2); INSERT INTO two_column_order (legacyRank, forcedRank) VALUES (7, NULL); INSERT INTO two_column_order (legacyRank, forcedRank) VALUES (0, NULL); INSERT INTO two_column_order (legacyRank, forcedRank) VALUES (1, NULL); INSERT INTO two_column_order (legacyRank, forcedRank) VALUES (2, 6); INSERT INTO two_column_order (legacyRank, forcedRank) VALUES (3, NULL); INSERT INTO two_column_order (legacyRank, forcedRank) VALUES (4, 1);
SELECT * FROM two_column_order order by CASE when `forcedRank` IS NOT NULL THEN `forcedRank` ELSE `legacyRank` + .1 END
legacyRank
forcedRank
0
null
4
1
1
null
6
2
3
null
5
null
2
6
7
null