The TDAJoinConditionCollection class represents a collection of JOIN conditions (TDAJoinCondition elements) items. This collection is used by the TDAJoinSourceTable to store JOIN conditions.

This class is used by the descendants of the TDAQueryBuilder class to generate proper SQL JOIN statements for SELECT queries. For example: The TDASQL92QueryBuilder uses this class to build SQL statements according to the SQL-92 standart.

You can use this class to specify JOIN conditions of the data table.


Instance Methods

constructor Create

Creates a new instance.

constructor Create(aOwner: TPersistent)


  • aOwner: Specified owner of the current collection.

Add  reintroduce

Creates a new TDAJoinCondition item and adds it to the current collection.

function Add: TDAJoinCondition