Data Table with Current Week and Those Dates One Year Ago - sql

Question

I'm trying to create one sql table with the current week's data (always changing) as well as those dates data from the previous year. I have multiple tables that I have to join but am not sure how to create it all into one table. Here is what I have so far:
------- CURRENT YEAR -------
DECLARE
#CURRENTDATE DATE,
#BEGINDATE DATE
SET #CURRENTDATE = CONVERT(DATE,GETDATE()) ---// TODAY'S DATE //---
SET #BEGINDATE = DATEADD(DAY, -7, GETDATE()) ---// A WEEK BEFORE TODAY'S DATE //---
SELECT SALES.*, RECRUITS.Recruits
FROM
(
SELECT
CONVERT(VARCHAR(10), A.[ORDER DATE], 101) AS 'DAY'
, 'Sales Revenue Current Year' = FORMAT(SUM(A.[GRAND TOTAL]) ,'C', 'EN-US')
, 'Comm. Sales Volume Current Year' = FORMAT(sum(a. [QUALIFYING VOLUME]), 'C', 'EN-US')
FROM TABLE1 a
WHERE CONVERT(VARCHAR(10), A.[ORDER DATE], 101) >= #BEGINDATE AND CONVERT(VARCHAR(10), A.[ORDER DATE], 101) < #CURRENTDATE
GROUP BY CONVERT(VARCHAR(10), A.[ORDER DATE], 101)
) SALES,
(
SELECT
CONVERT(VARCHAR(10),a.[start date],101) AS 'DAY'
,count(b.[id number]) as Recruits
from TABLE2 a
left join
TABLE3 b
on a.enroller = b. [id number]
WHERE CONVERT(VARCHAR(10), A.[START DATE], 101) >= #BEGINDATE AND CONVERT(VARCHAR(10), A.[START DATE], 101) < #CURRENTDATE
group by a.[start date]
) RECRUITS
WHERE SALES.DAY = RECRUITS.DAY
I have the same script for the previous year. It is the same except I set the dates to -366 and -373 days. Any help would be great!

Answer 1

You can use multiple dates with an "OR", like below, but a better solution would be to use a date dimensional table, a list of every daily date with things like "WeekOfYear", "WeekOfMonth", "QuarterOfYear", "IsHoliday", etc. Then you can join your date against that table and query "where t1.WeekOfYear = t2.WeekOfYear".
DECLARE
#EndDate DATE = GETDATE() ---// TODAY'S DATE //---
, #StartDate DATE = DATEADD(DAY, -7, GETDATE()) ---// A WEEK BEFORE TODAY'S DATE //---
, #LYStartDate DATE = DATEADD(YEAR, -1, GETDATE()) ---// A YEAR BEFORE TODAY'S DATE //---
, #LYEndDate DATE = DATEADD(DAY, -7, DATEADD(YEAR, -1, GETDATE())) ---// A YEAR AND A WEEK BEFORE TODAY'S DATE //---
SELECT SALES.*, RECRUITS.Recruits
FROM
(
SELECT
'DAY' = CONVERT(VARCHAR(10), A.[ORDER DATE], 101)
, 'Sales Revenue Current Year' = FORMAT(SUM(A.[GRAND TOTAL]) ,'C', 'EN-US')
, 'Comm. Sales Volume Current Year' = FORMAT(sum(a. [QUALIFYING VOLUME]), 'C', 'EN-US')
FROM TABLE1 a
WHERE (
(CAST(A.[ORDER DATE] AS DATE) >= #StartDate AND CAST(A.[ORDER DATE] AS DATE) <= #EndDate)
OR
(CAST(A.[ORDER DATE] AS DATE) >= #LYStartDate AND CAST(A.[ORDER DATE] AS DATE) <= #lyEndDate)
)
GROUP BY CAST(A.[ORDER DATE] AS DATE)
) SALES,
(
SELECT
'DAY' = CAST(a.[start date] AS DATE)
, Recruits = COUNT(b.[id number])
FROM TABLE2 a
LEFT JOIN TABLE3 b
ON a.enroller = b. [id number]
WHERE (
(CAST(A.[START DATE] AS DATE) >= #StartDate AND CAST(A.[ORDER DATE] AS DATE) <= #EndDate)
OR
(CAST(A.[START DATE] AS DATE) >= #lyStartDate AND CAST(A.[ORDER DATE] AS DATE) <= #LYEndDate)
GROUP BY CAST(a.[start date] AS DATE)
) RECRUITS
WHERE SALES.DAY = RECRUITS.DAY