拼音中文首字母大写查询
最新的商城项目需要用到拼音首字母大写查询,首先想加个字段存中文拼音的,觉得太麻烦,还是用sql解决快一些,lz用的是mysql。
解决的思路就是创建个函数调用,如果用工具navicat,则可以建立如下函数:
BEGIN
DECLARE V_RETURN VARCHAR(255);
DECLARE V_FIRST_CHAR VARCHAR(2);
SET V_FIRST_CHAR = UPPER(LEFT(PARAM,1));
SET V_RETURN = V_FIRST_CHAR;
IF LENGTH( V_FIRST_CHAR) <> CHARACTER_LENGTH( V_FIRST_CHAR ) THEN
SET V_RETURN = ELT(INTERVAL(CONV(HEX(LEFT(CONVERT(PARAM USING gbk),1)),16,10),
0xB0A1,0xB0C5,0xB2C1,0xB4EE,0xB6EA,0xB7A2,0xB8C1,0xB9FE,0xBBF7,
0xBFA6,0xC0AC,0xC2E8,0xC4C3,0xC5B6,0xC5BE,0xC6DA,0xC8BB,
0xC8F6,0xCBFA,0xCDDA,0xCEF4,0xD1B9,0xD4D1),
'A','B','C','D','E','F','G','H','J','K','L','M','N','O','P','Q','R','S','T','W','X','Y','Z');
END IF;
RETURN V_RETURN;
END
示例sql:
select name,logo,get_first_pinyin_char(name) from basic_brand where get_first_pinyin_char(name) = 'T'