CreateQuery summing (children 3)
 Identifier summing
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration k (children 1)
    DataType String
   ColumnDeclaration x (children 1)
    DataType UInt64
   ColumnDeclaration e (children 1)
    DataType Enum (children 1)
     ExpressionList (children 2)
      Function equals (children 1)
       ExpressionList (children 2)
        Literal \'hello\'
        Literal UInt64_1
      Function equals (children 1)
       ExpressionList (children 2)
        Literal \'world\'
        Literal UInt64_2
 Storage definition (children 2)
  Function SummingMergeTree
  Identifier k