CreateQuery ref_prices_ckh (children 3)
 Identifier ref_prices_ckh
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration k1 (children 1)
    DataType UInt64
   ColumnDeclaration k2 (children 1)
    DataType String
   ColumnDeclaration price (children 1)
    DataType UInt64
   ColumnDeclaration tag (children 1)
    DataType String
 Storage definition (children 2)
  Function MergeTree
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier k1
    Identifier k2
