Question

Currently I am performing 3 separate SQL calls. I would like to combine them into one if possible so my grid will sort properly.

I am working with 4 separate Tables

BlastAnalytics – has the following columns and bold are the ones I need the values…
id(primaryKey), eventType, BlastID, email, ts, bounceDesc

BlastJobs – has the following columns and bold are the ones I need the values…
JobNumber(primaryKey), MessageFrom, MessageHeader

BlastOpens – id(primaryKey), AnalyticsID, ts

BlastClicks – id(primaryKey), AnalyticsID, ts

The Joins are…
BlastAnalytics.BlastID –> BlastJobs.JobNumber
BlastAnalytics.id –> BlastOpens.AnalyticsID
BlastAnalytics.id –> BlastClicks.AnalyticsID

Currently I run the following SQL Statement to bind my grid…

SELECT BlastAnalytics.eventType, BlastAnalytics.BlastID, BlastAnalytics.email, 
  BlastAnalytics.ts, BlastAnalytics.bounceDesc, BlastJobs.MessageFrom, 
  BlastJobs.MessageHeader
FROM BlastAnalytics INNER JOIN
  BlastJobs ON BlastAnalytics.BlastID = BlastJobs.JobNumber
WHERE (BlastAnalytics.eventType <> 'open') 
 AND (BlastAnalytics.eventType <> 'click') 
 AND (BlastAnalytics.BlastID = @BlastID)
ORDER BY BlastAnalytics.ts DESC

Then on grid1_RowDataBound (when each individual row is created) I run the follow statements to get my Counts…

SELECT COUNT(*) AS OpenCount, BlastAnalytics.email
FROM BlastAnalytics INNER JOIN
  BlastOpens ON BlastAnalytics.id = BlastOpens.AnalyticsID
WHERE (BlastAnalytics.BlastID = @BlastID) 
  AND (BlastAnalytics.email = @email)

SELECT COUNT(*) AS ClickCount, BlastAnalytics.email
FROM BlastAnalytics INNER JOIN
  BlastClicks ON BlastAnalytics.id = BlastClicks.AnalyticsID
WHERE (BlastAnalytics.BlastID = @BlastID) 
  AND (BlastAnalytics.email = @email)

This all works fine but I would think I should be able to combine those statements into one using GROUP BYs or something, but I can’t figure out how.

EDIT

Here is an example of the type of data in the tables…

BlastOpens Table

id     AnalyticsID    ts     BlastID
2958   38289   1358546399   479
2959   38852   1358546391   479
2960   38280   1358546391   479
2961   38280   1358546400   479
2965   38282   1358546396   480
2986   38284   1358546398   480

BlastAnalytics Table

id  eventType   BlastID   email   ts   bounceDesc
38280   open   479  [e-mail]   1358546555  NULL
38289   open   479  [e-mail]   1358546555  NULL
38352   open   479  [e-mail]   1358550528  NULL
38115   send   479  [e-mail]   1358545375  NULL

So in the example above [e-mail] has a total Open Count of 3 and [e-mail] has 1.

Answer 1

While I haven’t tested this, something like this should work assuming your RDBMS supports sub queries:

SELECT BlastAnalytics.eventType, BlastAnalytics.BlastID, BlastAnalytics.email, 
   BlastAnalytics.ts, BlastAnalytics.bounceDesc, BlastJobs.MessageFrom, 
   BlastJobs.MessageHeader, 
   BO.OpenCount,
   BC.ClickCount
FROM BlastAnalytics 
   INNER JOIN BlastJobs ON BlastAnalytics.BlastID = BlastJobs.JobNumber
   LEFT JOIN (
      SELECT COUNT(*) AS OpenCount, BlastAnalytics.BlastID, BlastAnalytics.email
      FROM BlastAnalytics INNER JOIN
         BlastOpens ON BlastAnalytics.id = BlastOpens.AnalyticsID
      GROUP BY BlastAnalytics.BlastID, BlastAnalytics.email
   ) BO ON BlastAnalytics.BlastID = BO.BlastID AND BlastAnalytics.Email = BO.Email
   LEFT JOIN (
      SELECT COUNT(*) AS ClickCount, BlastAnalytics.BlastID, BlastAnalytics.email
      FROM BlastAnalytics INNER JOIN
         BlastClicks ON BlastAnalytics.id = BlastClicks.AnalyticsID
      GROUP BY BlastAnalytics.BlastID, BlastAnalytics.email
   )  BC ON BlastAnalytics.BlastID = BC.BlastID AND BlastAnalytics.Email = BC.Email
WHERE (BlastAnalytics.eventType <> 'open') 
   AND (BlastAnalytics.eventType <> 'click') 
   AND (BlastAnalytics.BlastID = @BlastID)
ORDER BY BlastAnalytics.ts DESC

Good luck.