MySQL字符串中的大小写转换详解

发表于 2025-11-03 17:48:27 来源：益强智未来

字中复制mysql> select lower(DDD); +--------------+| lower(DDD) |+--------------+| ddd |+--------------+mysql> select upper(ddd); +--------------+| upper(ddd) |+--------------+| DDD |+--------------+mysql> select lcase(DDD); +--------------+| lcase(DDD) |+--------------+| ddd |+--------------+mysql> select ucase(ddd); +--------------+| ucase(ddd) |+--------------+| DDD |+--------------+ 1.2.3.4.5.6.

喜欢2讨厌4

随机为您推荐

热门文章

文章排行