类型名称

显示长度

数据库类型

JAVA类型

JDBC类型索引(int)

描述

VARCHAR

L+N

VARCHAR

java.lang.String

12

CHAR

N

CHAR

java.lang.String

1

BLOB

L+N

BLOB

java.lang.byte[]

-4

TEXT

65535

VARCHAR

java.lang.String

-1

INTEGER

4

INTEGER UNSIGNED

java.lang.Long

4

TINYINT

3

TINYINT UNSIGNED

java.lang.Integer

-6

SMALLINT

5

SMALLINT UNSIGNED

java.lang.Integer

5

MEDIUMINT

8

MEDIUMINT UNSIGNED

java.lang.Integer

4

BIT

1

BIT

java.lang.Boolean

-7

BIGINT

20

BIGINT UNSIGNED

java.math.BigInteger

-5

FLOAT

4+8

FLOAT

java.lang.Float

7

DOUBLE

22

DOUBLE

java.lang.Double

8

DECIMAL

11

DECIMAL

java.math.BigDecimal

3

BOOLEAN

1

同TINYINT

ID

11

PK (INTEGER UNSIGNED)

java.lang.Long

4

DATE

10

DATE

java.sql.Date

91

TIME

8

TIME

java.sql.Time

92

DATETIME

19

DATETIME

java.sql.Timestamp

93

TIMESTAMP

19

TIMESTAMP

java.sql.Timestamp

93

YEAR

4

YEAR

java.sql.Date

91