MySQL獲取漢字拼音首字母

1、注意事項

注意：創建函數前要確保log_bin_trust_function_creators為on狀態，可以通過以下語句來啟用

set global log_bin_trust_function_creators=TRUE; or set global log_bin_trust_function_creators=1;

否則會出現以下錯誤：

[Err] 1418 - This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you *might* want to use the less safe log_bin_trust_function_creators variable)

2、SQL語句

--獲取單個漢字首字母拼音 CREATE FUNCTION `fristPinyin`(P_NAME VARCHAR(255)) RETURNS varchar(255) CHARSET utf8 BEGINDECLARE V_RETURN VARCHAR(255);SET V_RETURN = ELT(INTERVAL(CONV(HEX(left(CONVERT(P_NAME 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');RETURN V_RETURN; End--獲取字符串漢字首字母拼音（基于上面的方法） CREATE FUNCTION `pinyin`(P_NAME VARCHAR(255)) RETURNS varchar(255) CHARSET utf8 BEGINDECLARE V_COMPARE VARCHAR(255);DECLARE V_RETURN VARCHAR(255);DECLARE I INT;SET I = 1;SET V_RETURN = '';while I < LENGTH(P_NAME) doSET V_COMPARE = SUBSTR(P_NAME, I, 1);IF (V_COMPARE != '') THEN#SET V_RETURN = CONCAT(V_RETURN, ',', V_COMPARE);SET V_RETURN = CONCAT(V_RETURN, fristPinyin(V_COMPARE));#SET V_RETURN = fristPinyin(V_COMPARE);END IF;SET I = I + 1;end while;IF (ISNULL(V_RETURN) or V_RETURN = '') THENSET V_RETURN = P_NAME;END IF;RETURN V_RETURN; END

3.展示效果?

?參考:

https://www.cnblogs.com/chbyiming-bky/articles/11548080.html

https://www.cnblogs.com/jiangxiaobo/p/7449224.html

?

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