Release 10.1A: OpenEdge Data Management:
SQL Reference

Date and time functions

Table 67 lists the date and time functions that ODBC supports.

The date and time functions listed can take the following arguments:

date-exp can be a column name, a date or timestamp literal, or the result of another scalar function, where the underlying data type can be represented as SQL_CHAR, SQL_VARCHAR, SQL_DATE, or SQL_TIMESTAMP.
time_exp can be a column name, a timestamp or timestamp literal, or the result of another scalar function, where the underlying data type can be represented as SQL_CHAR, SQL_VARCHAR, SQL_TIME, or SQL_TIMESTAMP.
timestamp_exp can be a column name; a time, date, or timestamp literal; or the result of another scalar function, where the underlying data type can be represented as SQL_CHAR, SQL_VARCHAR, SQL_TIME, SQL_DATE, or SQL_TIMESTAMP.

Table 67: Time and date functions

Function	Returns
CURRENT DATE() (ODBC 3.6)	Current date.
CURRENT_TIME[(time-precision)] (ODBC 3.6)	Current local time. The time-precision argument determines the seconds precision of the returned value.
CURRENT_TIMESTAMP [(timestamp-precision)] (ODBC 3.6)	Current local date and local time as a timestamp value. The timestamp-precision argument determines the seconds precision of the returned timestamp.
CURDATE()	Current date as a date value.
CURTIME()	Current local time as a time value.
DAYNAME(date_exp)	Character string containing a date source-specific name of the day for the day portion of date_exp.
DAYOFMONTH(date_exp)	Day of the month in date_exp as an integer value (1–31).
DAYOFWEEK(date_exp)	Day of the week in date_exp as an integer value (1–7).
DAYOFYEAR(date_exp)	Day of the year in date_exp as an integer value (1–366).
HOUR(time_exp)	Hour in time_exp as an integer value (0–23).
MINUTE(time_exp)	Minute in time_exp as an integer value (0–59).
MONTH(date_exp)	Month in date_exp as an integer value (1–366).
MONTHNAME(date_exp)	Character string containing the data source-specific name of the month.
NOW()	Current date and time as a timestamp value.
QUARTER(date_exp)	Quarter in date_exp as an integer value (1–4).
SECOND(time_exp)	Second in date_exp as an integer value (0–59).
TIMESTAMPADD(interval, integer_exp, time_exp)	Timestamp calculated by adding integer_exp intervals of type interval to time_exp. interval can be: SQL_TSI_FRAC_SECOND SQL_TSI_SECOND SQL_TSI_MINUTE SQL_TSI_HOUR SQL_TSI_DAY SQL_TSI_WEEK SQL_TSI_MONTH SQL_TSI_QUARTER SQL_TSI_YEAR Fractional seconds are expressed in billionths of a second.
TIMESTAMPDIFF(interval, time_exp1, time_exp2)	Integer number of intervals of type interval by which time_exp2 is greater than time_exp1. interval has the same values as TIMESTAMPADD. Fractional seconds are expressed in billionths of a second.
WEEK(date_exp)	Week of the year in date_exp as an integer value (1-53).
YEAR(date_exp)	Year in date_exp. The range is data source dependent.