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  CREATE TABLE `temp` (
  `colid` bigint(20) NOT NULL,
  `permisson` bit(10) NOT NULL,
  `userid` bigint(20) NOT NULL,
  PRIMARY KEY (`colid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

    µ«ÊÇÎÒÊÖ¶¯²åÈëÒ»ÌõÊý¾Ý£¨1£¬111111101£¬1£©ºó·¢ÏÖ permisson×Ö¶ÎÏÔʾ³É 000000000000000000000111111101£¬ÎªÊ²Ã´²»ÊÇ10λ£¿
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    ºÏ²¢µÄÕýÈ·½á¹ûÓ¦¸ÃÊÇ  permisson userid
                          111111101  1
    Õâ¸ösqlÓï¾ä¸ÃÔõÃ´Ð´ÄØ£¿
   


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BIT(M) approximately (M+7)/8 bytes



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SQL code:
mysql> CREATE TABLE `temp` (
-> `colid` bigint(20) NOT NULL,
-> `permisson` bit(10) NOT NULL,
-> `userid` big


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