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解析字符串以从下划线分隔的大字符串中获取数字

2024-05-14 13:56:06 414

让我们首先创建一个表-

mysql> create table DemoTable1961
   (
   Title text
   );

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable1961 values('You_can_remove_the_string_part_only-10001-But_You_can_not_remove_the_numeric_parts');

使用select语句显示表中的所有记录-

mysql> select * from DemoTable1961;

这将产生以下输出-

+------------------------------------------------------------------------------------+
| Title                                                                              |
+------------------------------------------------------------------------------------+
| You_can_remove_the_string_part_only-10001-But_You_can_not_remove_the_numeric_parts |
+------------------------------------------------------------------------------------+
1 row in set (0.00 sec)

这是实现CAST()和解析字符串以从字符串中获取数字的查询-

mysql> select cast(replace(replace('You_can_remove_the_string_part_only-10001-But_You_can_not_remove_the_numeric_parts','You_can_remove_the_string_part_only-',''),
   '-But_You_can_not_remove_the_numeric_parts','') as unsigned) as Output from DemoTable1961;

这将产生以下输出-

+--------+
| Output |
+--------+
|  10001 |
+--------+
1 row in set (0.00 sec)

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解析字符串以从下划线分隔的大字符串中获取数字

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