Data.Cloud.AmazonAPI.TAmazonTableService.DeleteColumns
Delphi
function DeleteColumns(const TableName, RowId: string; const Columns: TStrings; Conditionals: TList<TAmazonRowConditional>; ResponseInfo: TCloudResponseInfo = nil): Boolean; overload;
function DeleteColumns(const TableName, RowId: string; const Columns: TStrings; ResponseInfo: TCloudResponseInfo = nil): Boolean; overload;
C++
bool __fastcall DeleteColumns(const System::UnicodeString TableName, const System::UnicodeString RowId, System::Classes::TStrings* const Columns, System::Generics::Collections::TList__1<TAmazonRowConditional>* Conditionals, Data::Cloud::Cloudapi::TCloudResponseInfo* ResponseInfo = (Data::Cloud::Cloudapi::TCloudResponseInfo*)(0x0))/* overload */;
bool __fastcall DeleteColumns(const System::UnicodeString TableName, const System::UnicodeString RowId, System::Classes::TStrings* const Columns, Data::Cloud::Cloudapi::TCloudResponseInfo* ResponseInfo = (Data::Cloud::Cloudapi::TCloudResponseInfo*)(0x0))/* overload */;
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| function | public | Data.Cloud.AmazonAPI.pas Data.Cloud.AmazonAPI.hpp |
Data.Cloud.AmazonAPI | TAmazonTableService |
Description
Deletes the specified columns from the given row.
There are two DeleteColumns overloaded methods.
For the first one you can customize the request through the Conditionals parameter. The optional Conditionals specify the conditions when the deletion should happen, and when it should not. For more information, see the documentation for TAmazonRowConditional.
If no columns are specified, then the row is deleted.
Each item in the list can be either a column name or a delimiter pair of column name and column value.
DeleteColumns returns True if the deletion terminates without an exception being thrown, and False otherwise.
The following table shows the significance of the parameters:
| Parameter | Description |
|---|---|
|
|
The name of the table the row is in. |
|
|
The row to delete columns from (or the row to delete, if no columns are specified). |
|
|
The columns to delete, or nil or an empty list to delete the row. |
|
|
The optional conditionals to be met for the deletion to happen. |
|
|
The optional class for storing response info into. |