select '2012-12-05','2012-12-06','2012-12-07','2012-12-08' from DUAL,如何把这种一行转为一列.主要用意就是把几个指定的字符串弄成一列.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 07:33:14
![select '2012-12-05','2012-12-06','2012-12-07','2012-12-08' from DUAL,如何把这种一行转为一列.主要用意就是把几个指定的字符串弄成一列.](/uploads/image/z/14800523-59-3.jpg?t=select+%272012-12-05%27%2C%272012-12-06%27%2C%272012-12-07%27%2C%272012-12-08%27+from+DUAL%2C%E5%A6%82%E4%BD%95%E6%8A%8A%E8%BF%99%E7%A7%8D%E4%B8%80%E8%A1%8C%E8%BD%AC%E4%B8%BA%E4%B8%80%E5%88%97.%E4%B8%BB%E8%A6%81%E7%94%A8%E6%84%8F%E5%B0%B1%E6%98%AF%E6%8A%8A%E5%87%A0%E4%B8%AA%E6%8C%87%E5%AE%9A%E7%9A%84%E5%AD%97%E7%AC%A6%E4%B8%B2%E5%BC%84%E6%88%90%E4%B8%80%E5%88%97.)
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select '2012-12-05','2012-12-06','2012-12-07','2012-12-08' from DUAL,如何把这种一行转为一列.主要用意就是把几个指定的字符串弄成一列.
select '2012-12-05','2012-12-06','2012-12-07','2012-12-08' from DUAL,如何把这种一行转为一列.
主要用意就是把几个指定的字符串弄成一列.
select '2012-12-05','2012-12-06','2012-12-07','2012-12-08' from DUAL,如何把这种一行转为一列.主要用意就是把几个指定的字符串弄成一列.
可以这样
select '2012-12-05' from DUAL
union all
select '2012-12-06' from DUAL
union all
select '2012-12-07' from DUAL
union all
select '2012-12-08' from DUAL
SELECT
select '2012-12-05','2012-12-06','2012-12-07','2012-12-08' from DUAL,如何把这种一行转为一列.主要用意就是把几个指定的字符串弄成一列.
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