回答編集履歴
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追記
answer
CHANGED
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@@ -1,4 +1,34 @@
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こんな感じ
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```SQL
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select substring(concat(str_to_date(date_info,'%Y%m%d'),' ',sec_to_time(time_to_sec(concat(time_info,'00')))),1,16)
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select substring(concat(str_to_date(date_info,'%Y%m%d'),' ',sec_to_time(time_to_sec(concat(time_info,'00')))),1,16);
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4
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```
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4
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```
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# 応用
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上記を利用して仮想生成列で処理します
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```SQL
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create table tbl(
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id int primary key,
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date_info char(8),
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13
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time_info char(4),
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formated_dt char(16) as
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(substring(concat(str_to_date(date_info,'%Y%m%d'),' ',sec_to_time(time_to_sec(concat(time_info,'00')))),1,16))
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);
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/* formated_dtが自動計算される仮想生成列 */
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insert into tbl(id,date_info,time_info) values
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(1,'20180106','0440'),
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(2,'20180105','2840'),
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(3,'20180104','5240');
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/* 出力 */
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select * from tbl;
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```
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- 結果
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|id|date_info|time_info|formated_dt|
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|:--:|:--:|:--:|:--:|
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32
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|1|20180106|0440|2018-01-06 04:40|
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33
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|2|20180105|2840|2018-01-05 28:40|
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34
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|3|20180104|5240|2018-01-04 52:40|
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