CreateQuery t_merge_tree_index (children 3)
 Identifier t_merge_tree_index
 Columns definition (children 1)
  ExpressionList (children 7)
   ColumnDeclaration a (children 1)
    DataType UInt64
   ColumnDeclaration b (children 1)
    DataType UInt64
   ColumnDeclaration sp (children 1)
    DataType UInt64
   ColumnDeclaration arr (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType LowCardinality (children 1)
       ExpressionList (children 1)
        DataType String
   ColumnDeclaration n (children 1)
    DataType Nested (children 1)
     ExpressionList (children 2)
      NameTypePair c1 (children 1)
       DataType String
      NameTypePair c2 (children 1)
       DataType UInt64
   ColumnDeclaration t (children 1)
    DataType Tuple (children 1)
     ExpressionList (children 2)
      NameTypePair c1 (children 1)
       DataType UInt64
      NameTypePair c2 (children 1)
       DataType UInt64
   ColumnDeclaration column.with.dots (children 1)
    DataType UInt64
 Storage definition (children 3)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 3)
    Identifier a
    Identifier b
    Function modulo (children 1)
     ExpressionList (children 2)
      Function sipHash64 (children 1)
       ExpressionList (children 1)
        Identifier sp
      Literal UInt64_100
  Set
