依据以下语句获取解决语句;

SELECT    case when DATA_TYPE= 'varchar' then CONCAT('ALTER TABLE ',TABLE_NAME , ' CHANGE ' ,COLUMN_NAME,'  ', REPLACE(COLUMN_NAME, '_', '') ,' ',DATA_TYPE,'(',CHARACTER_MAXIMUM_LENGTH,')' ,' ; ') elseCONCAT('ALTER TABLE ',TABLE_NAME , ' CHANGE ' ,COLUMN_NAME,'  ', REPLACE(COLUMN_NAME, '_', '') ,' ',DATA_TYPE,' ; ') end        as '语句',TABLE_SCHEMA AS '库名',TABLE_NAME AS '表名',COLUMN_NAME '列名',ORDINAL_POSITION AS '列的排列程序',COLUMN_DEFAULT AS '默认值',IS_NULLABLE AS '是否为空',DATA_TYPE AS '数据类型',CHARACTER_MAXIMUM_LENGTH AS '字符最大长度',NUMERIC_PRECISION AS '数值精度(最大位数)',NUMERIC_SCALE AS '小数精度',COLUMN_TYPE AS 列类型,COLUMN_KEY 'KEY',EXTRA AS '额定阐明',COLUMN_COMMENT AS '正文' FROMinformation_schema.`COLUMNS` WHERETABLE_SCHEMA = '数据库名称'    and COLUMN_NAME <> REPLACE(COLUMN_NAME, '_', '');    

依据查问的语句,执行后,即可调整数据库所有字段特殊字符;