CreateQuery test_table (children 3)
 Identifier test_table
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration dt (children 1)
    DataType DateTime
   ColumnDeclaration id (children 1)
    DataType UInt32
   ColumnDeclaration url (children 1)
    DataType String
   ColumnDeclaration visits (children 1)
    DataType UInt32
 Storage definition (children 3)
  Function ReplacingMergeTree
  Function toYYYYMM (children 1)
   ExpressionList (children 1)
    Identifier dt
  Function tuple (children 1)
   ExpressionList (children 2)
    Identifier dt
    Identifier id
