mysql表字段反查表名脚本-筛选法-查表技巧

bash 复制代码

高级模糊搜字段：
SELECT
    table_name,
    column_name
FROM
    information_schema.columns
WHERE
    table_schema = DATABASE()
    -- 核心处理逻辑：
    -- 1. 将 column_name 中的所有下划线移除（REPLACE(column_name, '_', '')）
    -- 2. 将结果转换为小写（LOWER(...)）
    -- 3. 与搜索词（同样经过处理）进行 LIKE 匹配
    AND LOWER(REPLACE(column_name, '_', '')) LIKE CONCAT('%', LOWER(REPLACE('testfiled', '_', '')), '%');

bash 复制代码

DELIMITER $$

-- 如果已存在同名存储过程，先删除
DROP PROCEDURE IF EXISTS SearchColumnWithData$$

-- 定义带参数的存储过程
CREATE PROCEDURE SearchColumnWithData(IN searchKeyword VARCHAR(100))
BEGIN
    -- 定义变量
    DECLARE done INT DEFAULT FALSE;
    DECLARE target_table VARCHAR(255);
    DECLARE target_col VARCHAR(255);
    -- 游标
    DECLARE cur CURSOR FOR 
        SELECT table_name, column_name
        FROM information_schema.columns 
        WHERE table_schema = DATABASE()
        -- 这里使用传入的 searchKeyword 参数，替换原来的固定字符串
        AND LOWER(REPLACE(column_name, '_', '')) LIKE CONCAT('%', LOWER(REPLACE(searchKeyword, '_', '')), '%');
        
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
    
    -- 创建临时表存结果
    DROP TEMPORARY TABLE IF EXISTS temp_search_result;
    CREATE TEMPORARY TABLE temp_search_result (
        tbl_name VARCHAR(255),
        col_name VARCHAR(255),
        row_count INT
    );

    OPEN cur;
    
    read_loop: LOOP
        FETCH cur INTO target_table, target_col;
        IF done THEN
            LEAVE read_loop;
        END IF;
        
        -- 动态构建 SQL：查询该表的总行数
        SET @s = CONCAT('INSERT INTO temp_search_result SELECT ''', target_table, ''', ''', target_col, ''', COUNT(*) FROM ', target_table);
        
        -- 执行动态 SQL
        PREPARE stmt FROM @s;
        EXECUTE stmt;
        DEALLOCATE PREPARE stmt;
        
    END LOOP;

    CLOSE cur;

    -- 输出结果：只显示有数据的表
    SELECT * FROM temp_search_result WHERE row_count > 0 ORDER BY row_count DESC;
    
    -- 清理
    DROP TEMPORARY TABLE IF EXISTS temp_search_result;
END$$

DELIMITER ;

bash 复制代码

CALL SearchColumnWithData('fdUnionId');