SQL

sql get number of days between two dates

DATEDIFF(DAY, '1/1/2011', '3/1/2011')

count weekend days between two dates sql

DECLARE @StartDate DATETIME
DECLARE @EndDate DATETIME
SET @StartDate = '2022/06/01'
SET @EndDate = '2022/06/30'


SELECT
  (DATEDIFF(wk, @StartDate, @EndDate) * 2)
   +(CASE WHEN DATENAME(dw, @StartDate) = 'Sunday'   THEN 1 ELSE 0 END)
   +(CASE WHEN DATENAME(dw, @EndDate)   = 'Saturday' THEN 1 ELSE 0 END)