unnest.tbl_kusto_abstract function

Unnest method for Kusto tables

This method takes a list column and expands it so that each element of the list gets its own row. unnest() translates to Kusto's mv-expand operator.

## S3 method for class 'tbl_kusto_abstract'
unnest(
  data,
  cols,
  ...,
  keep_empty = FALSE,
  ptype = NULL,
  names_sep = NULL,
  names_repair = NULL,
  .drop = NULL,
  .id = NULL,
  .sep = NULL,
  .preserve = NULL
)

Arguments

• data: A Kusto tbl.

• cols: Specification of columns to unnest.

• ...: : previously you could write df %>% unnest(x, y, z). Convert to df %>% unnest(c(x, y, z)). If you previously created a new variable in unnest() you'll now need to do it explicitly with mutate(). Convert df %>% unnest(y = fun(x, y, z))

  to df %>% mutate(y = fun(x, y, z)) %>% unnest(y).

• keep_empty: Needed for agreement with generic. Not otherwise used. Kusto does not keep empty rows.

• ptype: Needed for agreement with generic. Not otherwise used.

• names_sep: Needed for agreement with generic. Not otherwise used.

• names_repair: Needed for agreement with generic. Not otherwise used.

• .drop: Needed for agreement with generic. Not otherwise used.

• .id: Data frame identifier - if supplied, will create a new column with name .id, giving a unique identifier. This is most useful if the list column is named.

• .sep: Needed for agreement with generic. Not otherwise used.

• .preserve: Needed for agreement with generic. Not otherwise used.