SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 6)
    Function stddevSamp (alias da) (children 1)
     ExpressionList (children 1)
      Identifier a
    Function stddevSamp (alias db) (children 1)
     ExpressionList (children 1)
      Identifier b
    Function stddevSamp (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