CreateQuery pr_tt (children 3)
 Identifier pr_tt
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration k (children 1)
    DataType UInt64
   ColumnDeclaration v (children 1)
    DataType String
   ColumnDeclaration blob (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Function tuple (children 1)
   ExpressionList
  Set
