Data.DB.TIndexDefs.Add
Delphi
procedure Add(const Name, Fields: string; Options: TIndexOptions);
C++
HIDESBASE void __fastcall Add(const System::UnicodeString Name, const System::UnicodeString Fields, TIndexOptions Options);
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
procedure function |
public | Data.DB.pas Data.DB.hpp |
Data.DB | TIndexDefs |
Description
Creates a new index definition and adds it to the Items property.
Add is provided for backward compatibility. The recommended way to add new index definitions before creating a table is to use the AddIndexDef method. To add an index to an existing table, use the AddIndex method of the dataset instead. To change the array of indexes when a new index has been added to the dataset, use the Update method instead.
Add creates an index definition and assigns the values passed in the Name, Fields, and Options parameters to the TIndexDef properties of the same names. If an index definition with same name already exists, Add raises an EDatabaseError exception.
See Also