MySQL获取二维数组字符串的最后一个值的实现代码

 SELECT REPLACE ( REPLACE (  REPLACE (REPLACE ( s.gdbq, '],[', '@' ),
'[', '' ), ']', '' ), '"', '' ) replace_gdbq FROM
(
  SELECT '[["1","1007","1007012"],["5","5005"],
["6","6002","6002005"],["7","7003"],["8","8001","8001005"]]' AS gdbq
  ) AS s

DROP FUNCTION IF EXISTS func_split_arr_last_index;
DELIMITER //
CREATE FUNCTION func_split_arr_last_index(inputString VARCHAR(1024), delimiterChar VARCHAR(10))
RETURNS VARCHAR(1024) 
BEGIN
    -- 分割后的子字符串
    DECLARE splitStr VARCHAR(255);
    -- 再分割后的子字符串数组最后一个值
    DECLARE lastIndexStr VARCHAR(255);
    -- 分割后的结果
    DECLARE outputResult VARCHAR(255) DEFAULT '';
    -- 分割后的子字符串的位置
    DECLARE currentPos INT DEFAULT 1;
    -- 分割字符的位置
    DECLARE delimiterPos INT; 
    -- 分割字符的大小
    DECLARE delimiterLength INT; 
    SET delimiterLength = LENGTH(delimiterChar);
    -- 循环查找分割字符
    WHILE currentPos <= LENGTH(inputString) DO
        -- 查找分割字符的位置
        SET delimiterPos = LOCATE(delimiterChar, inputString, currentPos);
        -- 如果找到分割字符，则截取子字符串
        IF delimiterPos > 0 THEN
            SET splitStr = SUBSTRING(inputString, currentPos, delimiterPos - currentPos); 
            -- 找出最后一个值
	    SET lastIndexStr = SUBSTRING_INDEX(splitStr, ',', -1); 
            -- 将子字符串最后一个值添加到结果中
            SET outputResult = CONCAT(outputResult, lastIndexStr, ',');
            -- 更新索引
            SET currentPos = delimiterPos + delimiterLength;
        ELSE
            -- 如果没有找到分割字符，则将剩余的字符串添加到结果中
            SET splitStr = SUBSTRING(inputString, currentPos);
            -- 找出最后一个值
	    SET lastIndexStr = SUBSTRING_INDEX(splitStr, ',', -1); 
            SET outputResult = CONCAT(outputResult, lastIndexStr);
            -- 退出循环
            SET currentPos = LENGTH(inputString) + 1;
        END IF;
    END WHILE;
    
    -- 返回分割后的结果
   RETURN outputResult;
END //
 
 
DELIMITER ; 

SELECT func_split_arr_last_index(replace_gdbq, '@') FROM (
 SELECT REPLACE ( REPLACE (  REPLACE (REPLACE ( s.gdbq, '],
[', '@' ),'[', '' ), ']', '' ), '"', '' ) replace_gdbq FROM
(
  SELECT '[["1","1007","1007012"],["5","5005"],
["6","6002","6002005"],["7","7003"],["8","8001","8001005"]]' AS gdbq
  ) AS s
 ) AS t;