public SQLFieldAggregateExpression(SQLSelectTable objTable, string strFieldName, AggregateFunction eAggregate)
     : base(objTable, strFieldName)
 {
     this.AggregateFunction = eAggregate;
 }
 public SQLFieldExpression(SQLSelectTable objTable, string strFieldName)
 {
     this.Name = strFieldName;
     this.Table = objTable;
 }
 public SQLFieldAggregateExpression(SQLSelectTable objTable, string strFieldName)
     : base(objTable, strFieldName)
 {
 }
 public SQLAllFieldsExpression(SQLSelectTable objTable)
 {
     this.Table = objTable;
 }