businessYearBegin

businessYearBegin(X, [startingMonth=1], [offset], [n=1])

X is a scalar/vector of data type DATE, DATEHOUR, DATETIME, TIMESTAMP or NANOTIMESTAMP.

startingMonth (optional) is an integer between 1 and 12 indicating a month. The default value is 1.

offset (optional) is a scalar of the same data type as X, It must be no greater than the minimum value of X. The default value is the minimum value of X.

n (optional) is a positive integer. The default value is 1.

Return the first business day (Monday to Friday) of the year that X belongs to and that starts in the month of startingMonth.

If parameter offset is specified, the result is updated every n years. Parameter offset works only if parameter n>1.

businessYearBegin(2012.06.12);
// output
2012.01.02

businessYearBegin(2012.06.13 10:10:10.008,5);
// output
2012.05.01

date=2011.10.25 2012.10.25 2013.10.25 2014.10.25 2015.10.25 2016.10.25 2017.10.25 2018.10.25 2019.10.25 2020.10.25
time = [09:34:07,09:36:42,09:36:51,09:36:59,09:32:47,09:35:26,09:34:16,09:34:26,09:38:12,09:38:13]
sym = take(`MSFT,10)
price= 49.6 29.46 29.52 30.02 174.97 175.23 50.76 50.32 51.29 52.38
qty = 2200 1900 2100 3200 6800 5400 1300 2500 8800 4500
t1 = table(date, time, sym, qty, price);

select avg(price),sum(qty) from t1 group by businessYearBegin(date,1,2011.10.01,2)

Related functions: businessYearEnd, yearBegin, yearEnd