我们如何在MySQL中检索指定字符串的长度？
MySQL中的CHAR_LENGTH()或CHARACTER_LENGTH()字符串函数用于检索指定字符串的长度。此函数将仅计算字符数，而忽略字符是单字节还是多字节。
示例
mysql> Select CHAR_LENGTH('New Delhi');
+--------------------------+
| CHAR_LENGTH('New Delhi') |
+--------------------------+
| 9 |
+--------------------------+
1 row in set (0.00 sec)
mysql> Select CHAR_LENGTH('NewDelhi');
+-------------------------+
| CHAR_LENGTH('NewDelhi') |
+-------------------------+
| 8 |
+-------------------------+
1 row in set (0.00 sec)
mysql> Select CHARACTER_LENGTH('NewDelhi');
+------------------------------+
| CHARACTER_LENGTH('NewDelhi') |
+------------------------------+
| 8 |
+------------------------------+
1 row in set (0.00 sec)
mysql> Select CHARACTER_LENGTH('New Delhi');
+-------------------------------+
| CHARACTER_LENGTH('New Delhi') |
+-------------------------------+
| 9 |
+-------------------------------+
1 row in set (0.00 sec)热门推荐
10 小红书平安祝福语简短
11 生日祝福语大全女孩简短
12 收生日红包祝福语 简短
13 领证幽默祝福语简短
14 法考面试祝福语简短
15 老哥出门祝福语简短语
16 送灯祝福语简短独特
17 幼儿狗年祝福语大全简短
18 好听的元旦简短祝福语