impala_unnest function

Unnest a complex column in an Impala table

impala_unnest() unnests a column of type ARRAY, MAP, or STRUCT

in a tbl_impala. These column types are referred to as complex or nested types.

impala_unnest(data, col, ...)

Arguments

• data: an object with class tbl_impala
• col: the unquoted name of an ARRAY, MAP, or STRUCT column
• ...: ignored (included for compatibility)

Returns

an object with class tbl_impala with the complex column unnested into two or more separate columns

Details

impala_unnest() currently can unnest only one column, can only be applied once to a tbl_impala, and must be applied to a tbl_impala representing an Impala table or view before applying any other operations.

See Also

c("\n", "Impala Complex Types")