Pro případ 1 zkuste toto:
--Creating Test tables
create table #activity
(
ActivityId TINYINT,
ActivityName VARCHAR(20)
)
create table #date
(
[Date] DATE,
ActivityId TINYINT
)
INSERT INTO #activity VALUES(1,'Activity 1')
INSERT INTO #activity VALUES(2,'Activity 2')
INSERT INTO #activity VALUES(3,'Activity 3')
INSERT INTO #date VALUES('2015-05-01',1)
INSERT INTO #date VALUES('2015-05-01',1)
INSERT INTO #date VALUES('2015-05-02',2)
INSERT INTO #date VALUES('2015-05-03',3)
DECLARE @activities NVARCHAR(MAX)
DECLARE @stmt NVARCHAR(MAX)
SET @activities = ''
SET @stmt = ''
--Get List of Activities
SELECT @activities = @activities + ',[' + ActivityName + ']'
FROM #activity
SET @activities = RIGHT(@activities, LEN(@activities)-1) --Remove Leading Comma
--Build PIVOT Statement
SET @stmt = 'SELECT [Date],' + @activities + '
FROM (SELECT d.[Date], a.ActivityName
FROM #date d
INNER JOIN #activity a ON d.ActivityId = a.ActivityId) tab
PIVOT (COUNT(ActivityName) FOR ActivityName IN (' + @activities + ')) AS NumberOfActivities'
--Execute
EXEC sp_executesql @stmt
--CleanUp
DROP TABLE #activity
DROP TABLE #date