[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'SQLDB' (#fcl)

TSQLSequence

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

Support for applying sequences to fields

Declaration

Source position: sqldb.pp line 432

type TSQLSequence = class(TPersistent)

public

  constructor Create();

  

Create a new instance

  procedure Assign(); override;

  

Assign one TSQLSequence to another

  procedure Apply;

  

Apply a new value to a field

  function GetNextValue;

  

Get a next value for the sequence

published

  property FieldName: string; [rw]

  

Field to apply sequence to

  property SequenceName: string; [rw]

  

Sequence name to get values from

  property IncrementBy: Integer; [rw]

  

Value to increment sequence with

  property ApplyEvent: TSQLSequenceApplyEvent; [rw]

  

When to apply the new value

end;

Inheritance

TSQLSequence

  

Support for applying sequences to fields

|

TPersistent,IFPObserved

|

TObject

Description

TSQLSequence is an auxiliary class, used to auto-generate numerical values for fields in databases that support sequences; it is used as a property of TSQLQuery and its properties determine which field must be auto-generated, and at what moment this value must be generated.

See also

TSQLConnection.GetSequenceNames

  

Return a list of sequence names

TSQLConnection.GetNextValue

  

Get next value for a sequence


Documentation generated on: Jun 22 2020