CreateQuery foo__fuzz_0 (children 3)
 Identifier foo__fuzz_0
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration Id (children 1)
    DataType Int64
   ColumnDeclaration Val (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Int32
 Storage definition (children 2)
  Function MergeTree
  Identifier Id
