mysql 字母转为中文模糊搜索

MySQL字母转为中文模糊搜索

在MySQL中，我们经常会遇到需要进行模糊搜索的情况。通常情况下，我们使用LIKE语句来实现模糊搜索，但是LIKE语句只能匹配字符串中的某个子串，而不能进行字母转为中文的模糊搜索。本文将介绍一种将字母转为中文的模糊搜索方法，并提供相应的代码示例。

字母转为中文

在进行字母转为中文的模糊搜索之前，首先需要将字母转为相应的中文。为了简化操作，我们可以借助MySQL的字符串函数和表。

首先，我们需要创建一个包含字母和对应中文的字母表。

-- 创建字母表
CREATE TABLE letters (
  letter CHAR(1) NOT NULL,
  chinese VARCHAR(10) NOT NULL,
  PRIMARY KEY (letter)
);

-- 插入字母和中文的对应关系
INSERT INTO letters (letter, chinese) VALUES
  ('A', '阿'),
  ('B', '波'),
  ('C', '赤'),
  ('D', '的'),
  ('E', '俄'),
  ('F', '佛'),
  ('G', '哥'),
  ('H', '和'),
  ('I', '伊'),
  ('J', '吉'),
  ('K', '开'),
  ('L', '勒'),
  ('M', '梦'),
  ('N', '娜'),
  ('O', '欧'),
  ('P', '婆'),
  ('Q', '琼'),
  ('R', '茹'),
  ('S', '丝'),
  ('T', '塔'),
  ('U', '乌'),
  ('V', '维'),
  ('W', '雯'),
  ('X', '夏'),
  ('Y', '亚'),
  ('Z', '泽');

字符串转换

在进行模糊搜索之前，我们需要将待搜索的字符串中的字母转为对应的中文。为此，我们可以使用MySQL的字符串函数和子查询来实现。

-- 将字符串中的字母转为中文
SELECT 
  REPLACE(
    REPLACE(
      REPLACE(
        REPLACE(
          REPLACE(
            REPLACE(
              REPLACE(
                REPLACE(
                  REPLACE(
                    REPLACE(
                      REPLACE(
                        REPLACE(
                          REPLACE(
                            REPLACE(
                              REPLACE(
                                REPLACE(
                                  REPLACE(
                                    REPLACE(
                                      REPLACE(
                                        REPLACE(
                                          REPLACE(
                                            REPLACE(
                                              REPLACE(
                                                REPLACE(
                                                  REPLACE(
                                                    'mysql',
                                                    'A',
                                                    (SELECT chinese FROM letters WHERE letter = 'A')
                                                  ),
                                                  'B',
                                                  (SELECT chinese FROM letters WHERE letter = 'B')
                                                ),
                                                'C',
                                                (SELECT chinese FROM letters WHERE letter = 'C')
                                              ),
                                              'D',
                                              (SELECT chinese FROM letters WHERE letter = 'D')
                                            ),
                                            'E',
                                            (SELECT chinese FROM letters WHERE letter = 'E')
                                          ),
                                          'F',
                                          (SELECT chinese FROM letters WHERE letter = 'F')
                                        ),
                                        'G',
                                        (SELECT chinese FROM letters WHERE letter = 'G')
                                      ),
                                      'H',
                                      (SELECT chinese FROM letters WHERE letter = 'H')
                                    ),
                                    'I',
                                    (SELECT chinese FROM letters WHERE letter = 'I')
                                  ),
                                  'J',
                                  (SELECT chinese FROM letters WHERE letter = 'J')
                                ),
                                'K',
                                (SELECT chinese FROM letters WHERE letter = 'K')
                              ),
                              'L',
                              (SELECT chinese FROM letters WHERE letter = 'L')
                            ),
                            'M',
                            (SELECT chinese FROM letters WHERE letter = 'M')
                          ),
                          'N',
                          (SELECT chinese FROM letters WHERE letter = 'N')
                        ),
                        'O',
                        (SELECT chinese FROM letters WHERE letter = 'O')
                      ),
                      'P',
                      (SELECT chinese FROM letters WHERE letter = 'P')
                    ),
                    'Q',
                    (SELECT chinese FROM letters WHERE letter = 'Q')
                  ),
                  'R',
                  (SELECT chinese FROM letters WHERE letter = 'R')
                ),
                'S',
                (SELECT chinese FROM letters WHERE letter = 'S')
              ),
              'T',
              (SELECT chinese FROM letters WHERE letter = 'T')
            ),
            'U',
            (SELECT chinese FROM letters WHERE letter = 'U')
          ),
          'V',
          (SELECT chinese FROM letters WHERE letter = 'V')
        ),
        'W',
        (SELECT chinese FROM letters WHERE letter = 'W')
      ),
      'X',
      (SELECT chinese FROM letters WHERE letter = 'X')
    ),
    'Y',
    (SELECT chinese FROM letters WHERE letter = 'Y')
  ),
  'Z',
  (SELECT chinese FROM