Data.DB.TParam.ParamType
Delphi
property ParamType: TParamType read GetParamType write SetParamType;
C++
__property TParamType ParamType = {read=GetParamType, write=SetParamType, nodefault};
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| property | published | Data.DB.pas Data.DB.hpp |
Data.DB | TParam |
Description
Indicates the type of the parameter the TParam represents.
Objects that use TParam objects to represent field parameters set ParamType to indicate how the parameter is used. ParamType must be one of the following values:
| Value | Description |
|---|---|
|
ptUnknown |
Unknown or undetermined. Before executing a stored procedure, the application must set parameters of this type to another kind. |
|
ptInput |
Used to input a field value. Identifies a parameter used to pass values to a query or stored procedure for processing. |
|
ptOutput |
Used to output a field value. Identifies a parameter used by a stored procedure to return values to an application. |
|
ptInputOutput |
Used for both input and output. |
|
ptResult |
Used as a return value. Identifies a parameter used by a stored procedure to return an error or status value. A stored procedure can only have one parameter of type ptResult. |