Prvni verze

_sql/parseIntervalToHours.sql

@@ -0,0 +1,36 @@
+DROP TABLE IF EXISTS #tempPeceni
+
+CREATE TABLE #tempPeceni
+(
+EventID VARCHAR(8) NOT NULL,
+StartDateTime DATETIME NOT NULL,
+EndDateTime DATETIME NOT NULL
+)
+
+
+
+INSERT INTO #tempPeceni
+VALUES
+('peceni', 'september 17, 2023 7:0:00', 'september 18, 2023 02:26:18');
+
+
+
+
+select hr.ld AS CasDavky, 
+   60 - case when e.startdatetime > hr.ld then datepart(minute, e.startdatetime) else 0 end
+   + case when e.enddatetime < hr.ud then datepart(minute, e.enddatetime)-60 else 0 end as allocatedminutes
+from #tempPeceni as e
+cross apply
+(
+  select
+    dateadd(hour, datepart(hour,e.startdatetime)+t.rn-1, cast(cast(e.startdatetime as date) as datetime)) as ld, 
+    dateadd(hour, datepart(hour,e.startdatetime)+t.rn, cast(cast(e.startdatetime as date) as datetime)) as ud,
+    rn
+  from
+  (
+    -- a tally, max 100 rows .. max 100 hours duration
+    select top (1+datediff(hour,e.startdatetime,dateadd(minute, -1, e.enddatetime))) row_number() over(order by @@spid) as rn
+    from (values(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) as a(n)
+    cross join (values(1),(1),(1),(1),(1),(1),(1),(1),(1),(1)) as b(n)
+  ) as t
+) as hr;