convert_to
description
Syntax
VARCHAR convert_to(VARCHAR column, VARCHAR character)
在 order by 子句中使用，例如 order by convert(column using gbk), 现在仅支持 character 转为'gbk'.
因为当 order by column 中包含中文时，其排列不是按照汉语拼音的顺序。
将 column 的字符编码转为 gbk 后，可实现按拼音的排列的效果。
example
mysql> select * from class_test order by class_name;
+----------+------------+-------------+
| class_id | class_name | student_ids |
+----------+------------+-------------+
| 6 | asd | [6] |
| 7 | qwe | [7] |
| 8 | z | [8] |
| 2 | 哈 | [2] |
| 3 | 哦 | [3] |
| 1 | 啊 | [1] |
| 4 | 张 | [4] |
| 5 | 我 | [5] |
+----------+------------+-------------+
mysql> select * from class_test order by convert(class_name using gbk);
+----------+------------+-------------+
| class_id | class_name | student_ids |
+----------+------------+-------------+
| 6 | asd | [6] |
| 7 | qwe | [7] |
| 8 | z | [8] |
| 1 | 啊 | [1] |
| 2 | 哈 | [2] |
| 3 | 哦 | [3] |
| 5 | 我 | [5] |
| 4 | 张 | [4] |
+----------+------------+-------------+
keywords
convert_to