MySQL数据类型与java类型的匹配关系

本文详细介绍了MySQL中各种数据类型的存储方式及对应的Java映射类型,涵盖了整数类型、浮点数、日期时间、字符串、枚举等常见类型。

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MySQL Type NameReturn value of GetColumnTyneNameReturn value of GetColumnClassName
BIT(1) (new in MySQL-5.0)BITjava.lang.Boolean
BIT( > 1) (new in MySQL-5.0)BITbyte[]
TINYINTTINYINTjava.lang.Boolean if the configuration property tinyInt1isBit is set to true (the default) and the storage size is 1, or java.lang.Integer if not.
BOOLBOOLEANTINYINTSee TINYINT, above as these are aliases for TINYINT(1), currently.
SMALLINT[(M)] [UNSIGNED]SMALLINT [UNSIGNED]java.lang.Integer (regardless of whether it is UNSIGNED or not)
MEDIUMINT[(M)] [UNSIGNED]MEDIUMINT [UNSIGNED]java.lang.Integer (regardless of whether it is UNSIGNED or not)
INT,INTEGER[(M)] [UNSIGNED]INTEGER [UNSIGNED]java.lang.Integer, if UNSIGNED java.lang.Long
BIGINT[(M)] [UNSIGNED]BIGINT [UNSIGNED]java.lang.Long, if UNSIGNED java.math.BigInteger
FLOAT[(M,D)]FLOATjava.lang.Float
DOUBLE[(M,B)]DOUBLEjava.lang.Double
DECIMAL[(M[,D])]DECIMALjava.math.BigDecimal
DATEDATEjava.sql.Date
DATETIMEDATETIMEjava.sql.Timestamp
TIMESTAMP[(M)]TIMESTAMPjava.sql.Timestamp
TIMETIMEjava.sql.Time
YEAR[(2|4)]YEARIf yearIsDateType configuration property is set to false, then the returned object type is java.sql.Short. If set totrue (the default), then the returned object is of type java.sql.Date with the date set to January 1st, at midnight.
CHAR(M)CHARjava.lang.String (unless the character set for the column is BINARY, then byte[] is returned.
VARCHAR(M) [BINARY]VARCHARjava.lang.String (unless the character set for the column is BINARY, then byte[] is returned.
BINARY(M)BINARYbyte[]
VARBINARY(M)VARBINARYbyte[]
TINYBLOBTINYBLOBbyte[]
TINYTEXTVARCHARjava.lang.String
BLOBBLOBbyte[]
TEXTVARCHARjava.lang.String
MEDIUMBLOBMEDIUMBLOBbyte[]
MEDIUMTEXTVARCHARjava.lang.String
LONGBLOBLONGBLOBbyte[]
LONGTEXTVARCHARjava.lang.String
ENUM('value1','value2',...)CHARjava.lang.String
SET('value1','value2',...)CHARjava.lang.String
以上表格来自MySQL官网
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