Data.Win.ADODB.TParameterAttributes
Delphi
type TParameterAttributes = set of TParameterAttribute;
C++
typedef System::Set<TParameterAttribute, TParameterAttribute::paSigned, TParameterAttribute::paLong> TParameterAttributes;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
set typedef |
public | Data.Win.ADODB.pas Data.Win.ADODB.hpp |
Data.Win.ADODB | Data.Win.ADODB |
Description
TParameterAttributes values indicate the types of values a parameter can accept.
Use TParameterAttributes values to specify the characteristics of a parameter that control the types of values a parameter can accept.
The constants that make of the TParameterAttributes type correspond to the ADO ParameterAttributesEnum values of similar names. For instance, the TParameterAttributes type constant paSigned corresponds to the ADO constant adParamSigned. For additional information on these ADO constants and their effects, see the Microsoft Data Access SDK help in the topic for the Attributes property of the ADO Parameter object.
TParameterAttributes consists of the three constants summarized in the following table:
| Parameter Attribute | Meaning |
|---|---|
|
paSigned |
The parameter accepts signed values. |
|
paNullable |
The parameter accepts NULL values. |
|
paLong |
The parameter accepts long binary data. |