PHP MySQL - 订购字母和数字字符串

Question

我有以下数据：

GROUP 1 - FINANCE
GROUP 10 - SALES
GROUP 11 - MARKETING
GROUP 12 - HR
GROUP 2 - OPS

当 ORDERING 中的数据 MySQL 质疑它时，正确地将此数据按上述顺序带回。不过，有没有（不改数据可以按Numeric顺序排序的？如下

GROUP 1 - FINANCE
GROUP 2 - OPS
GROUP 10 - SALES
GROUP 11 - MARKETING
GROUP 12 - HR

谢谢！

Answer 1

从 MySQL 8.0 开始，您可以使用 REPLACE and REGEXP_SUBSTR 到 ORDER BY 列：

SELECT * 
FROM table_name
ORDER BY CAST(TRIM(REPLACE(REGEXP_SUBSTR(column_name, '(GROUP )([0-9]+)'), 'GROUP', '')) AS UNSIGNED)

Answer 2

添加 ORDER BY CAST(SUBSTRING_INDEX(SUBSTRING_INDEX(column, ' ', 2), ' ', -1) AS UNSIGNED) 子句应该会有所帮助。

嵌套 SUBSTRING_INDEX 具有正确参数的函数可以拆分和提取字符串部分。在这种情况下，将提取第一个字符串部分之后的数字部分 'GROUP'。

查询

SELECT
 records.data
FROM (

SELECT 
 "GROUP 1 - FINANCE" AS data
UNION 
SELECT 
 "GROUP 10 - SALES" AS data
UNION 
SELECT 
 "GROUP 11 - MARKETING" AS data 
UNION 
SELECT 
 "GROUP 12 - HR" AS data  
UNION 
SELECT 
 "GROUP 2 - OPS" AS data   
) AS records
ORDER BY 
 CAST(SUBSTRING_INDEX(SUBSTRING_INDEX(records.data, ' ', 2), ' ', -1) AS UNSIGNED)

观看演示 https://www.db-fiddle.com/f/sGqUeTKaDjihRA3Bg3Myca/0

PHP MySQL - 订购字母和数字字符串

PHP MySQL - Order Alpha and Numeric strings

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