Code for populating the 'date' dimension

The following tip contains the code for populating the 'date' dimension, as discussed in last week's tip.

Code for populating the 'date' dimension



For context, please see last tip .

 create procedure Load_Date_Dimension_Sp @year_start int, @year_end int as begin declare @yr int set @yr = year_start while (@yr <= year_end) begin insert into year_d (the_year) values (@yr) set @yr = @yr + 1 end declare @qt int set @qt = 1 while (@qt <= 4) begin insert into quarter_d (the_quarter) values (@qt) set @qt = @qt + 1 end declare @mo int set @mo = 1 while (@mo <= 12) begin insert into month_d (the_month) values (@mo) set @mo = @mo + 1 end update month_d set quarter_key = (select quarter_key from quarter_d where the_quarter=1) where the_month in (1,2,3) update month_d set quarter_key = (select quarter_key from quarter_d where the_quarter=2) where the_month in (4,5,6) update month_d set quarter_key = (select quarter_key from quarter_d where the_quarter=3) where the_month in (7,8,9) update month_d set quarter_key = (select quarter_key from quarter_d where the_quarter=4) where the_month in (10,11,12) declare @wk int set @wk = 1 while (@wk <= 52) begin insert into week_d (the_week) values (@wk) set @wk = @wk + 1 end declare @dt1 int set @dt1 = 1 while (@dt1 <= 31) begin insert into day_d (the_day) values (@dt1) set @dt1 = @dt1 + 1 end declare @dt datetime declare @dt_end = ?12/31/? + @year_end declare @day_k int declare @week_k int declare @month_k int declare @year_k int set @dt = '01/01/? + @year_start while (@dt <= @dt_end) begin select @year_k=year_key from year_d where the_year = year(@dt) select @month_k=month_key from month_d where the_month = month(@dt) select @day_k=day_key from day_d where the_day = day(@dt) select @week_k=week_key from week_d where the_week = datepart(wk,@dt) insert into date_d (the_date, day_key, week_key, month_key, year_key) values (@dt, @day_k, @week_k, @month_k, @year_k) set @dt = @dt + 1 end end


This was first published in April 2002

Dig deeper on Data governance

Pro+

Features

Enjoy the benefits of Pro+ membership, learn more and join.

0 comments

Oldest 

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

SearchBusinessAnalytics

SearchDataManagement

SearchSAP

SearchOracle

SearchAWS

SearchContentManagement

Close