CreateQuery 03173_lc_nullable_set (children 4)
 Identifier 03173_lc_nullable_set
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration id (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType Nullable (children 1)
       ExpressionList (children 1)
        DataType Int32
 Storage definition (children 1)
  Function Memory
 SelectWithUnionQuery (children 1)
  ExpressionList (children 2)
   SelectQuery (children 1)
    ExpressionList (children 1)
     Literal UInt64_10
   SelectQuery (children 1)
    ExpressionList (children 1)
     Literal NULL
