CreateQuery t03324 (children 3)
 Identifier t03324
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration c0 (children 1)
    DataType Nullable (children 1)
     ExpressionList (children 1)
      DataType Int
 Storage definition (children 4)
  Function AggregatingMergeTree (children 1)
   ExpressionList
  Identifier c0
  Identifier c0
  Set
