????1.?????xxxint??


????2.??????(float??double)

????????m???????Ч????????????d???????????????????????????ζ???

????3.??????(decimal)
????decimal(m??d) ?????????????????????д?????????????????????????????д??????????????m?????????????????????????????Χ?0~65??dС???????????????????Χ?0~30???????ó???m????????????????????65λ?????
????4.?????(char??varchar??xxxtext)

????5.??????????(xxxBlob)
????XXXBLOB??xxxtext????????????洢????????xxxTEXT???????????洢???????洢??????????Сд????xxxBlob????????????洢??????????Сд??xxxBlob?洢??????????????????xxxTEXT??????????????xxxblob??????????????
????6.???????????(date??time??datetime??timestamp)

????timestamp???????????????????ε??????timestamp???????ε???????????????????????????????????????????????ο????????????????????????????????????????
????7.?????????????