SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 6)
   ExpressionList (children 1)
    Literal Array_[Float64_0, Float64_2] (alias reference_vec)
   ExpressionList (children 1)
    Identifier id
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier tab
   ExpressionList (children 1)
    OrderByElement (children 1)
     Function L2Distance (children 1)
      ExpressionList (children 2)
       Identifier vec
       Identifier reference_vec
   Literal UInt64_3
   Set
