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SQL 2012:
I have two tables, AttemptedRuns and Bays
This
SELECT *
FROM NexGen.dbo.AttemptedRuns
WHERE BaySerialNumber = '1545300531'
Produces 317 rows. The table has a column called 'BaySerialNumber'
So I want to join on bays so I can retrieve the BayLocation:
SELECT ar.Id as AttemptedRunId,
ar.AccessionId,
ar.StartTime,
ar.BaySerialNumber,
ar.CartridgeId,
ar.Result as AttemptedRunResult,
b.Location as BayLocation
FROM NexGen.dbo.AttemptedRuns ar
LEFT JOIN NexGen.dbo.Bays b on b.SerialNumber = ar.BaySerialNumber
WHERE ar.BaySerialNumber = '1545300531'
The problem is that I now get 1902 rows. It's duplicating the AttemptedRuns rows. See here
What I am looking for is to get the BayLocation from the Bays table for each AttemptedRow row.
What am I doing wrong??
If it's not broken, fix it until it is.
Everything makes sense in someone's mind.
Ya can't fix stupid.
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There are more matches than 1 to 1. If you change it to SELECT * you'll see all the fields in both tables and can then see why you are getting more than one match.
There are two kinds of people in the world: those who can extrapolate from incomplete data.
There are only 10 types of people in the world, those who understand binary and those who don't.
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OK, but what I really want is to just get the BayLocation for each AttemptedRun record.
Is this possible?
If it's not broken, fix it until it is.
Everything makes sense in someone's mind.
Ya can't fix stupid.
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Kevin Marois wrote: the BayLocation for each AttemptedRun record.
I believe that is what you have originally:
SELECT ar.Id as AttemptedRunId,
ar.AccessionId,
ar.StartTime,
ar.BaySerialNumber,
ar.CartridgeId,
ar.Result as AttemptedRunResult,
b.Location as BayLocation
FROM AttemptedRuns ar
LEFT JOIN Bays b on b.SerialNumber = ar.BaySerialNumber
WHERE ar.BaySerialNumber = '1545300531'
This says to get all attempted runs and if there is a bay that matches on BaySerialNumber to get its information as well.
There are two kinds of people in the world: those who can extrapolate from incomplete data.
There are only 10 types of people in the world, those who understand binary and those who don't.
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RyanDev wrote: This says to get all attempted runs and if there is a bay that matches on BaySerialNumber to get its information as well.
Correct, What I'm looking for is the APPEND the BayLocation to the end of each row of AttemptedRun data
If it's not broken, fix it until it is.
Everything makes sense in someone's mind.
Ya can't fix stupid.
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But you have 6 matching rows in Bays. BaySerialNumber is not unique. That is why you need to run SELECT * and see why you are getting extra. Perhaps there is another field, like status, that you need to take into account. We can't know because we can't see all the data.
There are two kinds of people in the world: those who can extrapolate from incomplete data.
There are only 10 types of people in the world, those who understand binary and those who don't.
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Well you are right. Turns out there are 6 rows in Bays with the same serial number. I was operating under the assumption that the serial number was unique.
Thanks
If it's not broken, fix it until it is.
Everything makes sense in someone's mind.
Ya can't fix stupid.
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No problem. You may find that you need to use a different column to ensure uniqueness. Or there may be another table altogether. Who knows. Good luck.
There are two kinds of people in the world: those who can extrapolate from incomplete data.
There are only 10 types of people in the world, those who understand binary and those who don't.
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Ya I learned that the hard way 
First, I haven't done SQL in a while, so it's a bit blurry. Second, I don't really know the data too well.
it's all fun & games now
If it's not broken, fix it until it is.
Everything makes sense in someone's mind.
Ya can't fix stupid.
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Unless I mistake what you're asking, that should be doable using a correlated subquery. Something along the lines of
SELECT *,
(SELECT BayLocation FROM NexGen.dbo.Bays AS bl WHERE bl.SerialNumber = ar.BaySerialNumber) AS [MyNewColumn]
FROM NexGen.dbo.AttemptedRun AS ar
WHERE BaySerialNumber = '1545300531' That is assuming that each bay is uniquely numbered on said field.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
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If you look at the data in his screenshot you'll see that there are different values for BayLocation per run so this approach would give an error about multiple records in a subquery.
There are two kinds of people in the world: those who can extrapolate from incomplete data.
There are only 10 types of people in the world, those who understand binary and those who don't.
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I didn't look; he said he wanted the entire record, and add a single column. Means it is also easy to debug the subquery by using a value from the database as example.
There will probably be multiple records with the same ar.BaySerialNumber, and I'm hoping that b.SerialNumber is the primary key (or at least uniquely indexed) on the Bays-table. Even if there's a one to one relation, that should work.
So, what the schema of the tables? Would be nice to have a CREATE script for both tables 
--edit
Asking the wrong person, and was already solved.
Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
modified 19-Jan-17 16:49pm.
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Colleagues:
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On a number of occasions, while developing database applications and alongside that, the SQL procedures and modules to support these applications, I found my efforts hindered by others going in and changing those modules I was working on or even completely wiping them out without my ability to save them on a regular basis so that I could recover them if necessary.
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To date I have received one review by a download site that appeared to go through my software on a legitimate basis and liked it very much. Their only complaint was the "stodgy" interface, which I have since modernized.
I would like additional input to this effort to better understand if there is something in my work that is deficient or it is merely a marketing issue. As a result, I am offering 5 to 10 license keys to those developers that would take the time to review my product for me and give me some of the insight I am looking for.
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Sr. Software Engineer
Black Falcon Software, Inc.
blackfalconsoftware@outlook.com
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Thanks for the heads-up.
I'll move my thread over as soon as I finish my current set of tasks.
Steve Naidamast
Sr. Software Engineer
Black Falcon Software, Inc.
blackfalconsoftware@outlook.com
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I don't seem to be getting this right in VB. I get an error in casting the result as an Integer, in which the result may not exist.
ProductInfo_Inventory should be a join to get a count
Dim cStatus As Integer = context.ProductInfo_Inventory.Where(Function(m) m.partNumber = p_PartNumber).Select(Function(m) m.currentStatus).DefaultIfEmpty()
This is the whole thing. Not every item has a record in inventory for it's optional. So I'm not really sure how to properly handle this in VB
My new program is much better and in c#, so I seem to be doing better in that now.
pValue = context.ProductInfo.Where(Function(m) m.PartNumber = p_PartNumber).Count()
Dim cStatus = context.ProductInfo_Inventory.Where(Function(m) m.partNumber = p_PartNumber).Select(Function(m) m.currentStatus).DefaultIfEmpty()
If (cStatus = 4) Then
dV = False
Else
dV = If(pValue > 0, True, False)
End If
21st Century Globalism has become Socialism on a planetary scale, in which the unequal treaties of the past have come back into play.
modified 5-Jan-17 14:27pm.
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The first question is, what is the type of currentStatus?. If it's non-numeric or beyond the limits of integer, the cast will fail.
Another thing is that if the current status is nullable (or reference type) then the default would be null which cannot be cast to integer.
The most accurate information is in the error message, but you didn't post that.
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I had a customer walk in while posting and I hit post without much details, sorry about that; my bad.
This just determines if an item really exist, in case someone messed with the query string and put bad chars in there, or if an item was marked for deletion.
I went with this; cStatus is an Integer.
pValue = context.ProductInfo.Where(Function(m) m.PartNumber = p_PartNumber).Count()
If (context.ProductInfo_Inventory.Any(Function(m) m.partNumber = p_PartNumber)) Then
cStatus = context.ProductInfo_Inventory.Where(Function(m) m.partNumber = p_PartNumber).Select(Function(m) m.currentStatus).FirstOrDefault()
End If
If (cStatus = 4) Then
dV = False
Else
dV = If(pValue < 4, True, False)
End If
21st Century Globalism has become Socialism on a planetary scale, in which the unequal treaties of the past have come back into play.
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No problem! So everything works now? Just notice that FirstOrDefault may also return null which wuold cause an exception since cStatus is integer so depending on the situation you may want to use integer? and check if a value is actually returned.
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I didn't think of that, I'll add it now
21st Century Globalism has become Socialism on a planetary scale, in which the unequal treaties of the past have come back into play.
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Hi All,
I have a File System Watcher, which is monitoring file drops and renaming etc, which keeps the file information into a table, I have another application which executes the file related SSIS packages, and these two applications are Asynchronous. The problem is the Excel Connection Manager in the SSIS Package, when its reading the files, its creating another temporary file which is unnecessarily creating a record in the table. Can anybody please help me in how to overcome this scenario, I did a little bit by keeping a file exists check in the SSIS package that if the file exists or file already ran I am not going to run the package again on the File but still a record entry would be there on the monitors table which comes because of the Excel connection manager opening and reading the File.
Any help would be very helpful, a code snippet, a link or suggestion anything helps, thanks in advance
Thanks,
Abdul Aleem
"There is already enough hatred in the world lets spread love, compassion and affection."
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I did but the problem is the temp files are going to be created with $ prefix but the extension is same and another thing is that the temp files is going to be renamed back to the original file I think that's the reason why, it was hard for me to catch it and fix it. I tried it in hard way but only got 90% success, the way is to not insert any record into the monitoring table if same file name and location file comes within 15 minutes of previous drop then don't insert it into the monitoring table, but still for some SSIS package may take more that 15 minutes to read, then still those files are showing up in the monitoring table.
If there is any easy and proven approach that would be very helpful, thanks for the help buddy
Thanks,
Abdul Aleem
"There is already enough hatred in the world lets spread love, compassion and affection."
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hi,
I am having doubt in logical schema of database.
A logical schema
a)is the entire database
b)is a standard way of organizing information into a accessible part
c)describe how data is actually stored on disk
d)is design-centric database structure built to meet business requirements
My answer is "a" that is the entire database.Is it correct?
Please help............
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