add_date_int add_interval_interval add_timestamptz_interval bool_in bool_out cstring2text date_in date_out date_to_timestamp date_to_timestamptz float_exp float_ln float_log10 float_round interval_cmp interval_in interval_make interval_out minus_date_date minus_date_int minus_timestamptz_interval minus_timestamptz_timestamptz mul_interval_double text2cstring text_cmp text_copy text_initcap text_lower text_out text_upper textcat_text_text time_in time_out timestamp_in timestamp_out timestamp_to_date timestamptz_in timestamptz_out timestamptz_shift timestamptz_to_date

interval_make() Interval * interval_make ( int32  years, int32  months, int32  weeks, int32  days, int32  hours, int32  mins, double  secs  ) Return an interval constructed from its arguments. Parameters [in] years Years [in] months Months [in] weeks Weeks [in] days Days [in] hours Hours [in] mins Minutes [in] secs Seconds Note PostgreSQL function: make_interval(PG_FUNCTION_ARGS)