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Mysql数据类型与Java数据类型的对应关系

Jun 07, 2016 pm 03:39 PM
java mysql relation official data document type chain

官方文档链接: http://dev.mysql.com/doc/refman/5.0/en/connector-j-reference-type-conversions.html Mysql官方文档上写 的 Mysql数据类型与Java数据类型的对应关系 。有疑问的细节,看官方文档~~ Table20.25.MySQLTypestoJavaTypesforResultSet.getObjec

官方文档链接:

http://dev.mysql.com/doc/refman/5.0/en/connector-j-reference-type-conversions.html

Mysql官方文档上写Mysql数据类型与Java数据类型的对应关系。有疑问的细节,看官方文档~~

Table 20.25. MySQL Types to Java Types for ResultSet.getObject()

MySQL Type Name

Return value ofGetColumnClassName

Returned as Java Class

BIT(1) (new in MySQL-5.0)

BIT

java.lang.Boolean

BIT( > 1) (new in MySQL-5.0)

BIT

byte[]

TINYINT

TINYINT

java.lang.Boolean if the configuration property tinyInt1isBit is set to true (the default) and the storage size is 1, orjava.lang.Integer if not.

BOOLBOOLEAN

TINYINT

See TINYINT, above as these are aliases forTINYINT(1), currently.

SMALLINT[(M)] [UNSIGNED]

SMALLINT [UNSIGNED]

java.lang.Integer (regardless ifUNSIGNED or not)

MEDIUMINT[(M)] [UNSIGNED]

MEDIUMINT [UNSIGNED]

java.lang.Integer, if UNSIGNEDjava.lang.Long (C/J 3.1 and earlier), orjava.lang.Integer for C/J 5.0 and later

INT,INTEGER[(M)] [UNSIGNED]

INTEGER [UNSIGNED]

java.lang.Integer, if UNSIGNEDjava.lang.Long

BIGINT[(M)] [UNSIGNED]

BIGINT [UNSIGNED]

java.lang.Long, if UNSIGNEDjava.math.BigInteger

FLOAT[(M,D)]

FLOAT

java.lang.Float

DOUBLE[(M,B)]

DOUBLE

java.lang.Double

DECIMAL[(M[,D])]

DECIMAL

java.math.BigDecimal

DATE

DATE

java.sql.Date

DATETIME

DATETIME

java.sql.Timestamp

TIMESTAMP[(M)]

TIMESTAMP

java.sql.Timestamp

TIME

TIME

java.sql.Time

YEAR[(2|4)]

YEAR

If yearIsDateType configuration property is set to false, then the returned object type isjava.sql.Short. If set to true (the default), then the returned object is of typejava.sql.Date with the date set to January 1st, at midnight.

CHAR(M)

CHAR

java.lang.String (unless the character set for the column is BINARY, then byte[] is returned.

VARCHAR(M) [BINARY]

VARCHAR

java.lang.String (unless the character set for the column is BINARY, then byte[] is returned.

BINARY(M)

BINARY

byte[]

VARBINARY(M)

VARBINARY

byte[]

TINYBLOB

TINYBLOB

byte[]

TINYTEXT

VARCHAR

java.lang.String

BLOB

BLOB

byte[]

TEXT

VARCHAR

java.lang.String

MEDIUMBLOB

MEDIUMBLOB

byte[]

MEDIUMTEXT

VARCHAR

java.lang.String

LONGBLOB

LONGBLOB

byte[]

LONGTEXT

VARCHAR

java.lang.String

ENUM('value1','value2',...)

CHAR

java.lang.String

SET('value1','value2',...)

CHAR

java.lang.String


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