Check a set of columns in a data frame uniquely identify data frame rows. — assert_cols_det_unique_row • wwinference

Equivalently, this checks that when grouping by the columns in question, each group has a single entry

Usage

assert_cols_det_unique_row(
  df,
  unique_key_columns,
  arg = "x",
  call = rlang::caller_env(),
  add_err_msg = ""
)

Arguments

df: the dataframe to check
unique_key_columns: Columns that, taken together, should uniquely identify a row in the data frame.
arg: the name of the unique grouping to check
call: Calling environment to be passed to cli::cli_abort() for traceback.
add_err_msg: string containing an additional error message, default is the empty string ("")

Value

NULL, invisibly