Calculating the Quarter
Quick post since it’s been awhile since I’ve done anything. I’ve mentioned before but I do a lot of reports, and I recently got one to do some calculations for 95th percentile–well, kind of. The funny thing was the person who asked me was supposed to be making a solution themselves, kind of homework from the boss but they didn’t mention it to me and I thought it would be a fun challenge so I went and wrote up a script that could do it, parameters and everything. Oops! Anyway, when done they loved the report so I streamlined it from taking 10 minutes to run to about 1 or 2 (all in SQL, no PowerShell) and thought I was done with it. Then came the ask, not only do they want that data for the month, they want it for the whole quarter! So now I had to figure out which quarter I was in and what the date range for that would be. Yeah, I could put it in by hand, but there’s no challenge in that.
First came a Google to see if someone could do it in a one liner, and sure enough Vinoth over at StackOverflow had some great maths for that. Now calculate the dates and the easiest way was to simply create a little loop 1 through 4 and calculate my dates:
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| #Define Quarters | |
| $Quarters = @{} | |
| $Start = Get-Date –Month 1 –Date 1 –Year (Get-Date).Year | |
| ForEach ($Q in (1..4)) | |
| { | |
| $Quarters.Add($Q,[PSCustomObject]@{ | |
| From = $Start | |
| To = $Start.AddMonths(3).AddTicks(-1) | |
| }) | |
| $Start = $Start.AddMonths(3) | |
| } | |
| #Define this quarter | |
| $Quarter = [int]([math]::Ceiling((Get-Date –Format MM)/3)) |
First use Get-Date to get the January 1st, then loop 4 times adding 3 months each time to get the date ranges. Now to get a date range for the current quarter? $Quarters[$Quarter].
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