MYSQL：只拉最小字符长度的单词

Question

如何从MYSQL中仅提取最多50个字符的单词？

$query = "SELECT * FROM example ORDER BY ID DESC LIMIT 200"; 

Answer 1

尝试在WHERE约束中使用CHAR_LENGTH函数：

SELECT * FROM example WHERE CHAR_LENGTH(word) <= 50 ORDER BY ID DESC LIMIT 200

CHAR_LENGTH返回字符串中的字符数。 LENGTH返回字节数。如果您的单词可能包含多字节字符，则优先使用CHAR_LENGTH。

Answer 2

尝试使用length（）函数http://dev.mysql.com/doc/refman/5.0/en/string-functions.html

Answer 3

SELECT * FROM example WHERE LENGTH(column) <= 50 ORDER BY ID DESC LIMIT 200