ADO 數據類型轉換表[轉] ?

ADO 數據類型轉換表
The following table shows the ADO Data Type mapping between Visual Basic, Access, SQL Server, Oracle, and the .NET Framework.

ADO
DataType
EnumADO
DataType
Enum
Value.NET
FrameworkSQL
ServerSizeAccessOracleVisual
Basic
6.0

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 int ?	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)

posted on 2007-08-24 12:46?Seraph's Zone(WelCome) 閱讀(...) 評論(...) 編輯 收藏

轉載于:https://www.cnblogs.com/Wang-Seraph/archive/2007/08/24/868163.html

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