SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Identifier field1
    Identifier field2
    Identifier field3
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier alias_local10
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier EventDate
     Literal \'2000-01-01\'