To find all or any specific Apache Hive Function/s, please type below on Hive interactive shell/CLI:
SHOW FUNCTIONS;
DESCRIBE FUNCTION <function_name>;
DESCRIBE FUNCTION EXTENDED <function_name>;
Example:
hive> show functions; OK ! != % & * + - / < <= <=> <> = == > >= ^ abs acos add_months and array array_contains ascii asin assert_true atan avg base64 between bin case cbrt ceil ceiling coalesce collect_list collect_set compute_stats concat concat_ws context_ngrams conv corr cos count covar_pop covar_samp create_union cume_dist current_database current_date current_timestamp current_user date_add date_format date_sub datediff day dayofmonth decode degrees dense_rank div e elt encode ewah_bitmap ewah_bitmap_and ewah_bitmap_empty ewah_bitmap_or exp explode factorial field find_in_set first_value floor format_number from_unixtime from_utc_timestamp get_json_object greatest hash hex histogram_numeric hour if in in_file index initcap inline instr isnotnull isnull java_method json_tuple lag last_day last_value lcase lead least length levenshtein like ln locate log log10 log2 lower lpad ltrim map map_keys map_values matchpath max min minute month months_between named_struct negative next_day ngrams noop noopstreaming noopwithmap noopwithmapstreaming not ntile nvl or parse_url parse_url_tuple percent_rank percentile percentile_approx pi pmod posexplode positive pow power printf radians rand rank reflect reflect2 regexp regexp_extract regexp_replace repeat reverse rlike round row_number rpad rtrim second sentences shiftleft shiftright shiftrightunsigned sign sin size sort_array soundex space split sqrt stack std stddev stddev_pop stddev_samp str_to_map struct substr substring sum tan to_date to_unix_timestamp to_utc_timestamp translate trim trunc ucase unbase64 unhex unix_timestamp upper var_pop var_samp variance weekofyear when windowingtablefunction xpath xpath_boolean xpath_double xpath_float xpath_int xpath_long xpath_number xpath_short xpath_string year | ~ Time taken: 0.099 seconds, Fetched: 216 row(s) hive>
