Tipi che si possono assegnare ad ADO
|
adCmdUnspecified
|
-1
|
Does not specify the command type argument.
|
|
adCmdText
|
1
|
Evaluates CommandText as a textual definition of a
command or stored procedure call.
|
|
adCmdTable
|
2
|
Evaluates CommandText as a table name whose columns
are all returned by an internally generated SQL query.
|
|
adCmdStoredProc
|
4
|
Evaluates CommandText as a stored procedure name.
|
|
adCmdUnknown
|
8
|
Default. Indicates that the type of command in the
CommandText property is not known.
|
|
adCmdFile
|
256
|
Evaluates CommandText as the file name of a
persistently stored Recordset. Used with Recordset.Open or
Requery only.
|
|
adCmdTableDirect
|
512
|
Evaluates CommandText as a table name whose columns
are all returned. Used with Recordset.Open or Requery only. To use the Seek
method, the Recordset must be opened with adCmdTableDirect. This value cannot
be combined with the ExecuteOptionEnum value adAsyncExecute.
|
Codice del tipo di dato di
una tabella in sql server, alla quale ci si è connessi con ADO
|
Constant
|
Value
|
Description
|
|
adEmpty
|
0
|
No value
|
|
adSmallInt
|
2
|
A 2-byte signed integer.
|
|
adInteger
|
3
|
A 4-byte signed integer.
|
|
adSingle
|
4
|
A single-precision floating-point value.
|
|
adDouble
|
5
|
A double-precision floating-point value.
|
|
adCurrency
|
6
|
A currency value
|
|
adDate
|
7
|
The number of days since December 30, 1899 + the
fraction of a day.
|
|
adBSTR
|
8
|
A null-terminated character string.
|
|
adIDispatch
|
9
|
A pointer to an IDispatch interface on a COM object.Note: Currently
not supported by ADO.
|
|
adError
|
10
|
A 32-bit error code
|
|
adBoolean
|
11
|
A boolean value.
|
|
adVariant
|
12
|
An Automation Variant. Note: Currently not supported by ADO.
|
|
adIUnknown
|
13
|
A pointer to an IUnknown interface on a COM object. Note:Currently not supported
by ADO.
|
|
adDecimal
|
14
|
An exact numeric value with a fixed precision and
scale.
|
|
adTinyInt
|
16
|
A 1-byte signed integer.
|
|
adUnsignedTinyInt
|
17
|
A 1-byte unsigned integer.
|
|
adUnsignedSmallInt
|
18
|
A 2-byte unsigned integer.
|
|
adUnsignedInt
|
19
|
A 4-byte unsigned integer.
|
|
adBigInt
|
20
|
An 8-byte signed integer.
|
|
adUnsignedBigInt
|
21
|
An 8-byte unsigned integer.
|
|
adFileTime
|
64
|
The number of 100-nanosecond intervals since January
1,1601
|
|
adGUID
|
72
|
A globally unique identifier (GUID)
|
|
adBinary
|
128
|
A binary value.
|
|
adChar
|
129
|
A string value.
|
|
adWChar
|
130
|
A null-terminated Unicode character string.
|
|
adNumeric
|
131
|
An exact numeric value with a fixed precision and
scale.
|
|
adUserDefined
|
132
|
A user-defined variable.
|
|
adDBDate
|
133
|
A date value (yyyymmdd).
|
|
adDBTime
|
134
|
A time value (hhmmss).
|
|
adDBTimeStamp
|
135
|
A date/time stamp (yyyymmddhhmmss plus a fraction in
billionths).
|
|
adChapter
|
136
|
A 4-byte chapter value that identifies rows in a
child rowset
|
|
adPropVariant
|
138
|
An Automation PROPVARIANT.
|
|
adVarNumeric
|
139
|
A numeric value (Parameter object only).
|
|
adVarChar
|
200
|
A string value (Parameter object only).
|
|
adLongVarChar
|
201
|
A long string value.
|
|
adVarWChar
|
202
|
A null-terminated Unicode character string.
|
|
adLongVarWChar
|
203
|
A long null-terminated Unicode string value.
|
|
adVarBinary
|
204
|
A binary value (Parameter object only).
|
|
adLongVarBinary
|
205
|
A long binary value.
|
|
AdArray
|
0x2000
|
A flag value combined with another data type
constant. Indicates an array of that other data type.
|
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