ADO 数据类型转换表[转]
ADO 數(shù)據(jù)類型轉(zhuǎn)換表
The following table shows the ADO Data Type mapping between Visual Basic, Access, SQL Server, Oracle, and the .NET Framework.
| adBigInt | 20 | Int64 SqlDbType.BigInt10 OleDbType.BigInt 11 | bigint 9 | 8 | ? | ? | Variant |
| adBinary | 128 | Byte[] SqlDbType.VarBinary10 OleDbType.Binary 11 | binary timestamp | 50 8 | ? | Raw 7 | Variant |
| adBoolean | 11 | Boolean SqlDbType.Bit10 OleDbType.Boolean 11 | bit | 1 2 | ? ? YesNo | ? | Boolean |
| adBSTR | 8 | String OleDbType.BSTR 11 | ? | ? | ? | ? | ? |
| adChapter | 136 | (DataReader) | ? | ? | ? | ? | ? |
| adChar | 129 | String? SqlDbType.Char10 OleDbType.Char 11 | char | X | ? | Char | String |
| adCurrency | 6 | Decimal SqlDbType.Money 10 OleDbType.Currency 11 | money smallmoney ? | 8 4 0 | ? ? Currency | ? | Currency |
| adDate | 7 | DateTime OleDbType.DBDate 11 | ? | 0 | ? DateTime 2 | ? | Date |
| adDBDate | 133 | DateTime OleDbType.DBDate 11 | ? | ? | ? | ? | ? |
| adDBFileTime | 137 | DBFileTime 11 | ? | ? | ? | ? | ? |
| adDBTime | 134 | DateTime OleDbType.DBTime 11 | ? | ? | ? | ? | ? |
| adDBTimeStamp | 135 | DateTime SqlDbType.DateTime10 OleDbType.DBTimeStamp 11 | datetime ?smalldatetime ? | 8 4 0 | ? ? DateTime 1 | Date | Date |
| adDecimal | 14 | Decimal OleDbType.Decimal 11 | ? | ? | ? | Decimal 7 | Variant 6 |
| adDouble | 5 | Double SqlDbType.Float10 OleDbType.Double 11 | float | ? 8 0 | ? ? Double | Float | Double |
| adEmpty | 0 | Empty 11 | ? | ? | ? | ? | ? |
| adError | 10 | External-Exception OleDbType.Error 11 | ? | ? | ? | ? | ? |
| adFileTime | 64 | DateTime OleDbType.Filetime 11 | ? | ? | ? | ? | ? |
| adGUID | 72 | Guid? SqlDbType.UniqueIdentifier10 OleDbType.Guid 11 | uniqueidentifier5 | 16 | ? ? ReplicationID2,3? | ? | Variant |
| adIDispatch | 9 | Object OleDbType.IDispatch 11 | ? | ? | ? | ? | ? |
| adInteger | 3 | Int32 SqlDbType.Int10 OleDbType.Integer 11 | identity 4 | 4 4 ? | ? AutoNumber Long Integer | Int 7 | Long |
| adIUnknown | 13 | Object OleDbType.IUnknown 11 | ? | ? | ? | ? | ? |
| adLongVarBinary | 205 | Byte[] SqlDbType.VarBinary10 OleDbType.LongVarBinary 11 | image | 2147483647 | ? ? OLEObject | Long Raw 7 Blob 8 | Variant |
| adLongVarChar | 201 | String SqlDbType.VarChar10 OleDbType.LongVarChar 11 | text | 2147483647 | ? Memo 1, 2 Hyperlink 1, 2 | Long 7 Clob 8 | String |
| adLongVarWChar | 203 | String SqlDbType.NText10 OleDbType.VarWChar 11 | ntext 5 | 1073741823 | ? Memo 3 Hyperlink 3 | NClob 8 | String |
| adNumeric | 131 | Decimal SqlDbType.Decimal10 OleDbType.Decimal 11 | decimal numeric ? | 9 ? | ? ? Decimal 3 | Decimal Integer Number SmallInt | Variant 6 |
| adPropVariant | 138 | Object OleDbType.PropVariant 11 | ? | ? | ? | ? | ? |
| adSingle | 4 | Single SqlDbType.Real10 OleDbType.Single 11 | real | 4 | ? ? Single | ? | Single |
| adSmallInt | 2 | Int16, SqlDbType.SmallInt10 OleDbType.SmallInt 11 | smallInt | 2 | ? ? Integer | ? | Integer |
| adTinyInt | 16 | Byte OleDbType.TinyInt 11 | ? | ? | ? | ? | ? |
| adUnsignedBigInt | 21 | UInt64 OleDbType.UnsignedBigInt 11 | ? | ? | ? | ? | ? |
| adUnsignedInt | 19 | UInt32 OleDbType.UnsignedInt 11 | ? | ? | ? | ? | ? |
| adUnsignedSmallInt | 18 | UInt16 OleDbType.UnsignedSmallInt 11 | ? | ? | ? | ? | ? |
| adUnsignedTinyInt | 17 | Byte SqlDbType.TinyInt10 OleDbType.UnsignedTinyInt 11 | tinyInt | 1 | ? ? Byte | ? | Byte |
| adUserDefined | 132 | ? | ? | ? | ? | ? | ? |
| adVarBinary | 204 | Byte[]? SqlDbType.VarBinary10 OleDbType.VarBinary 11 | varbinary | 50 | ? ? ReplicationID 1 | ? | Variant |
| adVarChar | 200 | String SqlDbType.VarChar10 OleDbType.VarChar 11 | varchar | X | ? ? Text 1, 2 | VarChar | String |
| adVariant | 12 | Object SqlDbType.Variant10 OleDbType.Variant 11 | sql_variant 9 | 8016 | ? | VarChar2 | Variant |
| adVarNumeric | 139 | OleDbType.VarNumeric 11 | ? | ? | ? | ? | ? |
| adVarWChar | 202 | String SqlDbType.NVarChar10 OleDbType.VarWChar 11 | nvarchar 5 | X | ? ? Text 3 | NVarChar2 | String |
| adWChar | 130 | String SqlDbType.NChar10 OleDbType.WChar 11 | nchar 5 | X | ? | ? | String |
?
1 - ODBC Driver (3.51.171300):? Microsoft Access Driver (*.mdb),??? Access 97 (3.5 format)?
2 - OLE DB Provider: Microsoft.Jet.OLEDB.3.51,?? Access 97 (3.5 format)??
3 - OLE DB Provider: Microsoft.Jet.OLEDB.4.0 ,?? Access 2000 (4.0 format)?
4 - OLE DB Provider: SQLOLEDB,?? SQL Server 6.5?
5 - OLE DB Provider: SQLOLEDB,?? SQL Server 7.0?+
6 - The VB Decimal data type can only be used within a Variant, that is, you cannot declare
???? a VB variable to be of type Decimal.?
7 - Oracle 8.0.x?? Note: DECIMAL and INT are synonyms for NUMBER and NUMBER(10) respectively.
8 - Oracle 8.1.x?
9 - OLE DB Provider: SQLOLEDB, SQL Server 2000 +
10 - SQL Server .NET Data Provider (via System.Data.SqlTypes)
11 - OLE DB .NET Data Provider (via System.Data.OleDb)
轉(zhuǎn)載于:https://www.cnblogs.com/Wang-Seraph/archive/2007/08/24/868163.html
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