YashanDB JDBC驱动会对YashanDB数据类型和Java数据类型进行类型转换，转换关系如下表所示：

YashanDB数据类型	YasTypes	JDBC类型	标准Java数据类型	是否已支持
CHAR	YasTypes.CHAR	java.sql.Types.CHAR	java.lang.String	Y
VARCHAR	YasTypes.VARCHAR	java.sql.Types.VARCHAR	java.lang.String	Y
NCHAR	YasTypes.NCHAR	java.sql.Types.NCHAR	java.lang.String	N
NVARCHAR	YasTypes.NVARCHAR	java.sql.Types.NVARCHAR	java.lang.String	N
BOOLEAN	YasTypes.BOOLEAN	java.sql.Types.BOOLEAN	java.lang.Boolean	Y
TINYINT	YasTypes.TINYINT	java.sql.Types.TINYINT	java.lang.Integer	Y
SMALLINT	YasTypes.SMALLINT	java.sql.Types.SMALLINT	java.lang.Integer	Y
INTEGER	YasTypes.INTEGER	java.sql.Types.INTEGER	java.lang.Integer	Y
BIGINT	YasTypes.BIGINT	java.sql.Types.BIGINT	java.lang.Long	Y
FLOAT	YasTypes.REAL	java.sql.Types.REAL	java.lang.Float	Y
DOUBLE	YasTypes.DOUBLE	java.sql.Types.DOUBLE	java.lang.Double	Y
DOUBLE	YasTypes.FLOAT	java.sql.Types.FLOAT	java.lang.Double	Y
NUMBER	YasTypes.NUMBER	java.sql.Types.NUMERIC	java.math. BigDecimal	Y
NUMBER	YasTypes.DECIMAL	java.sql.Types.DECIMAL	java.math. BigDecimal	Y
RAW	YasTypes.BINARY	java.sql.Types.BINARY	byte[]	N
RAW	YasTypes.VARBINARY	java.sql.Types.VARBINARY	byte[]	N
DATE	YasTypes.DATE	java.sql.Types.DATE	java.sql.Date	Y
TIME	YasTypes.TIME	java.sql.Types.TIME	java.sql.Time	Y
TIMESTAMP	YasTypes.TIMESTAMP	java.sql.Types.TIMESTAMP	javal.sql. Timestamp	Y
BLOB	YasTypes.BLOB	java.sql.Types.BLOB	java.sql.Stream	N
BLOB	YasTypes.BLOB	java.sql.Types.BLOB	java.sql.Blob	Y
CLOB	YasTypes.CLOB	java.sql.Types.CLOB	java.sql.Clob	Y
STRUCT	YasTypes.STRUCT	java.sql.Types.STRUCT	java.sql.Struct	N
REF	YasTypes.REF	java.sql.Types.REF	java.sql.Ref	N
ARRAY	YasTypes.ARRAY	java.sql.Types.ARRAY	java.sql.Array	N
ROWID	YasTypes.ROWID	java.sql.Types.ROWID	java.sql.RowId	Y
INTERVAL YEAR TO MONTH	YasTypes.	java.sql.Types.OTHER	--	N
INTERVAL DAY TO SECOND	YasTypes.	java.sql.Types.OTHER	--	N
--		java.sql.Types. TIMESTAMP_WITH_TIMEZONE	--	N
--		java.sql.Types. TIMESTAMP_WITH_TIMEZONE	--	N
BIT	YasTypes.BIT	java.sql.Types.BIT	BIT(1):boolean BIT(2~64):byte[]	Y
CURSOR	YasTypes.CURSOR	java.sql.Types.REF_CURSROR	java.sql.ResultSet	Y
CURSOR	YasTypes.REF_CURSOR	java.sql.Types.REF_CURSROR	java.sql.ResultSet	Y
JSON	YasTypes.JSON	java.sql.Types.OTHER	--	Y
XMLTYPE	YasTypes.SQLXML	java.sql.Types.SQLXML	java.sql.SQLXML	Y