MySQL怎么把列数据转成行数据-编程学习网

这篇文章主要介绍“MySQL怎么把列数据转成行数据”，在日常操作中，相信很多人在MySQL怎么把列数据转成行数据问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答”MySQL怎么把列数据转成行数据”的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

开发同学让我帮忙看看一个数据怎么录合适。
原始的数据如下,要录入到数据库里。
MySQL怎么把列数据转成行数据

先取消Excel的单元格合并.

删除第一行和第二行的数据,这些都是标题.
然后导出CSV文件,
使用文本文件编辑器打开CSV,替换 - 为 ,

然后德塔贝斯建个表。
再将CSV数据导入.

insert into target(channel,d,program,starttime,endtime)
select '中国之声',1,d1,min(starttime),max(endtime) from (
SELECT @gid := @cgid, @cgid := t.d1, if(@gid = @cgid, @rank,@rank := @rank + 1) AS rank, t.* from
(select id,starttime,endtime,d1 from t order by id) t ,(SELECT @gid := 1, @cgid := 1, @rank := 0) t2
) t4 group by d1,rank
union all
select '中国之声',2,d2,min(starttime),max(endtime) from (
SELECT @gid := @cgid, @cgid := t.d2, if(@gid = @cgid, @rank,@rank := @rank + 1) AS rank, t.* from
(select id,starttime,endtime,d2 from t order by id) t ,(SELECT @gid := 1, @cgid := 1, @rank := 0) t2
) t4 group by d2,rank
union all
select '中国之声',3,d3,min(starttime),max(endtime) from (
SELECT @gid := @cgid, @cgid := t.d3, if(@gid = @cgid, @rank,@rank := @rank + 1) AS rank, t.* from
(select id,starttime,endtime,d3 from t order by id) t ,(SELECT @gid := 1, @cgid := 1, @rank := 0) t2
) t4 group by d3,rank
union all
select '中国之声',4,d4,min(starttime),max(endtime) from (
SELECT @gid := @cgid, @cgid := t.d4, if(@gid = @cgid, @rank,@rank := @rank + 1) AS rank, t.* from
(select id,starttime,endtime,d4 from t order by id) t ,(SELECT @gid := 1, @cgid := 1, @rank := 0) t2
) t4 group by d4,rank
union all
select '中国之声',5,d5,min(starttime),max(endtime) from (
SELECT @gid := @cgid, @cgid := t.d5, if(@gid = @cgid, @rank,@rank := @rank + 1) AS rank, t.* from
(select id,starttime,endtime,d5 from t order by id) t ,(SELECT @gid := 1, @cgid := 1, @rank := 0) t2
) t4 group by d5,rank
union all
select '中国之声',6,d6,min(starttime),max(endtime) from (
SELECT @gid := @cgid, @cgid := t.d6, if(@gid = @cgid, @rank,@rank := @rank + 1) AS rank, t.* from
(select id,starttime,endtime,d6 from t order by id) t ,(SELECT @gid := 1, @cgid := 1, @rank := 0) t2
) t4 group by d6,rank
union all
select '中国之声',7,d7,min(starttime),max(endtime) from (
SELECT @gid := @cgid, @cgid := t.d7, if(@gid = @cgid, @rank,@rank := @rank + 1) AS rank, t.* from
(select id,starttime,endtime,d7 from t order by id) t ,(SELECT @gid := 1, @cgid := 1, @rank := 0) t2
) t4 group by d7,rank;