InsertQuery   (children 3)
 Function file (children 1)
  ExpressionList (children 1)
   Identifier 02384_data.arrow
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Function toLowCardinality (alias lc) (children 1)
      ExpressionList (children 1)
       Function toNullable (children 1)
        ExpressionList (children 1)
         Literal \'abc\'
    Set
 Set
