SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 4) ExpressionList (children 2) Identifier _table Function count (children 1) ExpressionList TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier x ExpressionList (children 1) Identifier _table ExpressionList (children 1) OrderByElement (children 1) Identifier _table