我有一张下表: 表A列:
key col1,key col2,key col3,Non-key col1, Non-key col2,Non-key col3
01,01,01,A,B,C
我想转换此表格如下所示:
表B:
key col1,key col2,key col3, Non-key name, Non-key val
01,01,01,Non-key col1,A
01,01,01,Non-key col2,B
01,01,01,Non-key col3,C
如何将表A转换为表B?
答案 0 :(得分:0)
怎么样:
SELECT * FROM
(SELECT KEY_COL1, KEY_COL2, KEY_COL3, NON_KEY_COL1, NON_KEY_COL1 AS DATA
FROM TABLE_A
UNION ALL
SELECT KEY_COL1, KEY_COL2, KEY_COL3, NON_KEY_COL1, NON_KEY_COL2 AS DATA
FROM TABLE_A
UNION ALL
SELECT KEY_COL1, KEY_COL2, KEY_COL3, NON_KEY_COL1, NON_KEY_COL3 AS DATA
FROM TABLE_A)
ORDER BY KEY_COL1, KEY_COL2, KEY_COL3, NON_KEY_COL1, DATA;
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