CreateQuery versioned_collapsing_merge_tree_with_sampling (children 3)
 Identifier versioned_collapsing_merge_tree_with_sampling
 Columns definition (children 1)
  ExpressionList (children 6)
   ColumnDeclaration d (children 1)
    DataType Date
   ColumnDeclaration a (children 1)
    DataType String
   ColumnDeclaration b (children 1)
    DataType UInt8
   ColumnDeclaration x (children 1)
    DataType String
   ColumnDeclaration y (children 1)
    DataType Int8
   ColumnDeclaration z (children 1)
    DataType UInt32
 Storage definition (children 1)
  Function VersionedCollapsingMergeTree (children 1)
   ExpressionList (children 6)
    Identifier d
    Function plus (children 1)
     ExpressionList (children 2)
      Function sipHash64 (children 1)
       ExpressionList (children 1)
        Identifier a
      Identifier b
    Function tuple (children 1)
     ExpressionList (children 3)
      Identifier a
      Function plus (children 1)
       ExpressionList (children 2)
        Function sipHash64 (children 1)
         ExpressionList (children 1)
          Identifier a
        Identifier b
      Identifier b
    Literal UInt64_111
    Identifier y
    Identifier b
