MySQL插入简单的函数索引报错

Question

问题遇到的现象和发生背景

MySQL插入简单的函数索引报错

用代码块功能插入代码，请勿粘贴截图

 CREATE TABLE func_index (
       c1 VARCHAR(10),
       c2 VARCHAR(10)
       );
CREATE INDEX c2_index ON func_index ((UPPER(c2)));

运行结果及报错内容

[42000][1064] You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(UPPER(c2)))' at line 1

Answer 1

提示很清楚了，你所用的mysql版本不支持函数索引