split_part

根据分割符拆分字符串，返回指定的分割部分（从 1 开始计数）。

语法

split_part(content, delimiter, field)

参数说明

content: 需要拆分的字符串。支持的数据类型为 VARCHAR。

delimiter: 用于拆分字符串的分割符。支持的数据类型为 VARCHAR。

field: 需要返回的部分的位置。支持的数据类型为 INT。

返回值说明

返回值的数据类型为 VARCHAR。

示例

MySQL > select split_part("hello world", " ", 1);
+----------------------------------+
|split_part('hello world', ' ', 1) |
+----------------------------------+
| hello                            |
+----------------------------------+

MySQL > select split_part("hello world", " ", 2);
+-----------------------------------+
| split_part('hello world', ' ', 2) |
+-----------------------------------+
| world                             |
+-----------------------------------+

MySQL > select split_part("hello world", " ", -1);
+----------------------------------+
|split_part('hello world', ' ', -1) |
+----------------------------------+
| world                            |
+----------------------------------+

MySQL > select split_part("hello world", " ", -2);
+-----------------------------------+
| split_part('hello world', ' ', -2) |
+-----------------------------------+
| hello                             |
+-----------------------------------+

MySQL > select split_part("hello world", "|", 1);
+----------------------------------+
| split_part('hello world', '|', 1) |
+----------------------------------+
| hello world                      |
+----------------------------------+

MySQL > select split_part("hello world", "|", -1);
+-----------------------------------+
| split_part('hello world', '|', -1) |
+-----------------------------------+
| hello world                       |
+-----------------------------------+

MySQL > select split_part("hello world", "|", 2);
+----------------------------------+
| split_part('hello world', '|', 2) |
+----------------------------------+
|                                  |
+----------------------------------+

MySQL > select split_part("abca", "a", 1);
+----------------------------+
| split_part('abca', 'a', 1) |
+----------------------------+
|                            |
+----------------------------+

MySQL > select split_part("abca", "a", -1);
+-----------------------------+
| split_part('abca', 'a', -1) |
+-----------------------------+
|                             |
+-----------------------------+

MySQL > select split_part("abca", "a", -2);
+-----------------------------+
| split_part('abca', 'a', -2) |
+-----------------------------+
| bc                          |
+-----------------------------+

MySQL > select split_part("2019年7月8日", "月", 1);
+-----------------------------------------+
| split_part('2019年7月8日', '月', 1)     |
+-----------------------------------------+
| 2019年7                                 |
+-----------------------------------------+

keyword

SPLIT_PART,SPLIT,PART