SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 6)
    Function stddevPop (alias da) (children 1)
     ExpressionList (children 1)
      Identifier a
    Function stddevPop (alias db) (children 1)
     ExpressionList (children 1)
      Identifier b
    Function stddevPop (alias dc) (children 1)
     ExpressionList (children 1)
      Identifier c
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier da
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier db
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier dc
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier decimal