mysql获取字段信息

 SELECT 
   TABLE_SCHEMA AS `databaseName`,
   TABLE_NAME AS `tableName`,
   COLUMN_NAME AS `columnName`,
   DATA_TYPE AS `columnType`,
   COLUMN_COMMENT AS `columnComment` 
 FROM
   `information_schema`.`COLUMNS` 
 WHERE `TABLE_SCHEMA` = '数据库名称' 
   AND `TABLE_NAME` = '表名' ;

其中 TABLE_SCHEMA 和 TABLE_NAME 分别改成对应数据库和表名即可

结果：

atabaseName   tableName  columnName  columnType  columnComment  
------------  ---------  ----------  ----------  ---------------
km_jobs2018   web_sms    id          int                        
km_jobs2018   web_sms    receiveNo   varchar     接收号码   
km_jobs2018   web_sms    content     varchar     短信内容   
km_jobs2018   web_sms    sendId      int         发送人Id    
km_jobs2018   web_sms    sendName    varchar     发送姓名   
km_jobs2018   web_sms    sendDate    datetime    发送时间   
km_jobs2018   web_sms    sendResult  varchar     发送结果   
km_jobs2018   web_sms    sendType    varchar     短信类型