mysql - 使用MYSQL删除字符串中不需要的字符

Question

我在 MYSQL 表中有一个这样的字符串。

"Collectibles
 >
 Decorative Collectibles
 >
 Decorative Collectible Brands
 >
 Department 56
 >
 Ornaments
 [ Changecategory ]"

我需要将其转换为(用逗号分隔)

Collectibles,Decorative Collectibles,Decorative Collectible Brands
,Department 56,Ornaments

我尝试用逗号替换回车符，但它不起作用。

Answer 1

试试这个。

SELECT 
REPLACE(
SUBSTRING_INDEX(
'Collectibles
 >
 Decorative Collectibles
 >
 Decorative Collectible Brands
 >
 Department 56
 >
 Ornaments
 [ Changecategory ]', '[', 1),
'\n >\n',',') output;

输出:

mysql> SELECT
    -> REPLACE(
    -> SUBSTRING_INDEX(
    -> 'Collectibles
    '>  >
    '>  Decorative Collectibles
    '>  >
    '>  Decorative Collectible Brands
    '>  >
    '>  Department 56
    '>  >
    '>  Ornaments
    '>  [ Changecategory ]', '[', 1),
    -> '\n >\n',',') output;
+--------------------------------------------------------------------------------------------------+
| output                                                                                           |
+--------------------------------------------------------------------------------------------------+
| Collectibles, Decorative Collectibles, Decorative Collectible Brands, Department 56, Ornaments
  |
+--------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)