jdbcType与javaType的对应关系

最新推荐文章于 2023-09-12 10:34:52 发布

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最新推荐文章于 2023-09-12 10:34:52 发布

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本文详细介绍了Java应用程序通过JDBC连接不同数据库时的数据类型映射情况，包括常见类型的Java表示及各数据库间的对应关系。

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java.sql.Types 值(jdbcType)	Java 类型	IBM DB2	Oracle	Sybase	SQL	Informix	IBM Content Manager
BIGINT	java.lang.long	BIGINT	NUMBER (38, 0)	BIGINT	BIGINT	INT8	DK_CM_BIGINT
BINARY	byte[]	CHAR FOR BIT DATA	RAW	BINARY	IMAGE	BYTE	DK_CM_BLOB
BIT	java.lang.Boolean	N/A	BIT	BIT	BIT	BIT	DK_CM_SMALLINT
BLOB	byte[]	BLOB	BLOB	BLOB	BLOB	BLOB	DK_CM_BLOB
CHAR	java.lang.String	CHAR, GRAPHIC	CHAR	CHAR	CHAR	CHAR	DK_CM_CHAR
CLOB	java.lang.String	CLOB, DBCLOB	CLOB	CLOB	CLOB	CLOB	DK_CM_CLOB
DATE	java.sql.Date	DATE	DATE	DATE	DATE	DATE	DK_CM_DATE
DECIMAL	java.math.BigDecimal	DECIMAL	NUMBER	DECIMAL, MONEY, SMALLMONEY	DECIMAL	DECIMAL	DK_CM_DECIMAL
DOUBLE	java.lang.Double	DOUBLE	DOUBLE PRECISION	DOUBLE PRECISION	DOUBLE PRECISION	DOUBLE PRECISION	DK_CM_DOUBLE
FLOAT	java.lang.Double	FLOAT	FLOAT	FLOAT	FLOAT	FLOAT	DK_CM_DOUBLE
INTEGER	java.lang.Integer	INTEGER	INTEGER	INT	INTEGER	INTEGER	DK_CM_INTEGER
JAVA_OBJECT	java.lang.Object	JAVA_OBJECT	JAVA_OBJECT	JAVA_OBJECT	JAVA_OBJECT	OPAQUE	N/A
LONGVARBINARY	byte[]	LONG VARCHAR FOR BIT DATA	LONG RAW	IMAGE	IMAGE	BYTE	DK_CM_BLOB
LONGVARCHAR	java.lang.String	LONG VARCHAR, LONG VARGRAPHIC	LONG	TEXT	TEXT	TEXT	DK_CM_VARCHAR(3500)
NUMERIC	java.math.BigDecimal	NUMERIC	NUMBER	NUMERIC	NUMERIC	NUMERIC	DK_CM_DECIMAL
OTHER	java.lang.Object	OTHER	OTHER	OTHER	OTHER	OTHER	N/A
REAL	java.lang.Float	REAL	REAL	REAL	REAL	REAL	DK_CM_DOUBLE
SMALLINT	java.lang.Integer	SMALLINT	SMALLINT	SMALLINT	SMALLINT	SMALLINT	DK_CM_INTEGER
TIME	java.sql.Time	TIME	DATE	TIME	TIME	DATETIME HOUR TO SECOND	DK_CM_TIME
TIMESTAMP	java.sql.Timestamp	TIMESTAMP	DATE	DATETIME, SMALLDATETIME	DATETIME	DATETIME YEAR TO FRACTION (5)	DK_CM_TIMESTAMP
TINYINT	java.lang.Bute	SMALLINT	TINYINT	TINYINT	TINYINT	TINYINT	DK_CM_INTEGER
VARBINARY	byte[]	VARCHAR FOR BIT DATA	RAW	VARBINARY	IMAGE	BYTE	DK_CM_BLOB
VARCHAR	java.lang.String	VARCHAR, VARGRAPHIC	VARCHAR	VARCHAR	VARCHAR	VARCHAR	DK_CM_VARCHAR

其中针对INTEGER类型：

SQLDatatypes	JDBC Typecodes	Standard Java Types	Java取值范围
NUMBER	java.sql.Types.NUMERIC	java.math.BigDecimal	无限制
NUMBER	java.sql.Types.DECIMAL	java.math.BigDecimal	无限制
NUMBER	java.sql.Types.BIT	boolean	true,false
NUMBER	java.sql.Types.TINYINT	byte	from –128 to 127
NUMBER	java.sql.Types.SMALLINT	short	from –32768 to 32767
NUMBER	java.sql.Types.INTEGER	int	From –2147483648 to 2147483647
NUMBER	java.sql.Types.BIGINT	long	From –9223372036854775808 to 9223372036854775807
NUMBER	java.sql.Types.REAL	float	From 1.4E-45 To 3.4028235E38
NUMBER	java.sql.Types.FLOAT	double	From 4.9E-324 to 1.7976931348623157E308
NUMBER	java.sql.Types.DOUBLE	double