CreateQuery sample_correct (children 3)
 Identifier sample_correct
 Columns definition (children 1)
  ExpressionList (children 1)
   ColumnDeclaration x (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 1)
    Function sipHash64 (children 1)
     ExpressionList (children 1)
      Identifier x
  Function sipHash64 (children 1)
   ExpressionList (children 1)
    Identifier x
