Timestamp Functions

function current_timestamp() returns timestamp

function format_timestamp $1(string, $1) returns string
	where $1 in (timestamp, datetime)
function format_timestamp(string, timestamp, time_zone string) returns string

function parse_timestamp(string, string) returns timestamp
function parse_timestamp(string, string, time_zone string) returns timestamp

function timestamp(string) returns timestamp
function timestamp(string, time_zone string) returns timestamp
function timestamp(date) returns timestamp
function timestamp(date, time_zone string) returns timestamp
function timestamp(datetime) returns timestamp
function timestamp(datetime, time_zone string) returns timestamp

function timestamp_add $1($1, interval) returns $1
	where $1 in (timestamp, datetime)

function timestamp_diff $1($1, $1, date_part string) returns bigint
	where date_part in (microsecond, millisecond, second, minute, hour, day, week, month, quarter, year)
	where $1 in (timestamp, datetime)

function timestamp_micros(int64) returns timestamp

function timestamp_millis(int64) returns timestamp

function timestamp_seconds(int64) returns timestamp

function timestamp_sub $1($1, interval) returns $1
	where $1 in (timestamp, datetime)

function timestamp_trunc $1($1, date_time_part string) returns $1
	where date_time_part in (microsecond, millisecond, second, minute, hour, day, week, week(monday), week(tuesday), week(wednesday), week(thursday), week(friday), week(saturday), week(sunday), isoweek, month, quarter, year, isoyear)
	where $1 in (timestamp, datetime)
function timestamp_trunc(timestamp, date_time_part string, time_zone string) returns timestamp
	where date_time_part in (microsecond, millisecond, second, minute, hour, day, week, week(monday), week(tuesday), week(wednesday), week(thursday), week(friday), week(saturday), week(sunday), isoweek, month, quarter, year, isoyear)

function unix_micros(timestamp) returns int64

function unix_millis(timestamp) returns int64

function unix_seconds(timestamp) returns int64