businessQuarterBegin

Syntax

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

Arguments

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

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

offset 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 is a positive integer. The default value is 1.

Details

Return the first business day (Monday to Friday) of the quarter that X belongs to. The first months of the quarters are determined by startingMonth. Note that startingMonth=1 is equivalent to startingMonth=4, 7 or 10.

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

Examples

$ businessQuarterBegin(2012.06.12);
2012.04.02

$ businessQuarterBegin(2012.06.12, 3);
2012.06.01

$ businessQuarterBegin(2012.06.12, 8, 2011.08.01, 3);
2012.05.01

$ date=2011.04.25+(1..10)*90
$ time = take(09:30:00, 10)
$ 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);

$ t1;

date	time	sym	qty	price
2011.07.24	09:30:00	MSFT	2200	49.6
2011.10.22	09:30:00	MSFT	1900	29.46
2012.01.20	09:30:00	MSFT	2100	29.52
2012.04.19	09:30:00	MSFT	3200	30.02
2012.07.18	09:30:00	MSFT	6800	174.97
2012.10.16	09:30:00	MSFT	5400	175.23
2013.01.14	09:30:00	MSFT	1300	50.76
2013.04.14	09:30:00	MSFT	2500	50.32
2013.07.13	09:30:00	MSFT	8800	51.29
2013.10.11	09:30:00	MSFT	4500	52.38

select avg(price),sum(qty) from t1 group by businessQuarterBegin(date, 10, 2010.10.01, 2);

businessQuarterBegin_date	avg_price	sum_qty
2011.04.01	49.6	2200
2011.10.03	29.49	4000
2012.04.02	102.495	10000
2012.10.01	112.995	6700
2013.04.01	50.805	11300
2013.10.01	52.38	4500

Related functions: businessQuarterEnd, quarterBegin, quarterEnd