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jTDS native type mapping
Below is the mapping between native SQL types and java objects.
| Native type | Java Object | JDBC Type | Comment |
|---|---|---|---|
Numeric types |
|||
| tinyint | java.lang.Integer | TINYINT | |
| smallint | java.lang.Integer | SMALLINT | |
| unsigned smallint | java.lang.Integer | INTEGER | Sybase only |
| int | java.lang.Integer | INTEGER | |
| unsigned int | java.lang.Integer | BIGINT | Sybase only |
| bigint | java.lang.Long | BIGINT | SQL 2000/Sybase 15+ |
| unsigned bigint | java.math.BigDecimal | DECIMAL | Sybase only |
| numeric | java.math.BigDecimal | NUMERIC | |
| decimal | java.math.BigDecimal | DECIMAL | |
| smallmoney | java.math.BigDecimal | DECIMAL | |
| money | java.math.BigDecimal | DECIMAL | |
| real | java.lang.Float | REAL | |
| float | java.lang.Double | DOUBLE | |
Logical type |
|||
| bit | java.lang.Boolean | BIT | |
Character types |
|||
| char | java.lang.String | CHAR | |
| varchar | java.lang.String | VARCHAR | |
| nchar | java.lang.String | CHAR | |
| nvarchar | java.lang.String | VARCHAR | |
| unichar | java.lang.String | CHAR | Sybase only |
| univarchar | java.lang.String | VARCHAR | Sybase only |
| text | java.sql.Clob | CLOB | |
| ntext | java.sql.Clob | CLOB | Microsoft only |
| unitext | java.sql.Clob | CLOB | Sybase only |
Binary types |
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| binary | byte[] | BINARY | |
| varbinary | byte[] | VARBINARY | |
| image | java.sql.Blob | BLOB | |
Datetime types |
|||
| smalldatetime | java.sql.Timestamp | TIMESTAMP | |
| datetime | java.sql.Timestamp | TIMESTAMP | |
| date | java.sql.Date | DATE | Sybase only |
| time | java.sql.Time | TIME | Sybase only |
Other types |
|||
| uniqueidentifier | java.lang.String | VARCHAR | Microsoft only |
| sql_variant | java.lang.String | VARCHAR | MS only TDS7 |
| sql_variant | Depends on value | OTHER | MS only TDS8 |
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