I'm struggling with a query that needs to use Not Exists between two unrelated tables. I'm not sure of the best way to handle this with SQL Query Analyzer.
I have three tables, employees, courses and training_records. There is no link between employees and courses other than through the training records table. My problem is that I am unsure of how to pull all employees and an associated course id and course title when there is not a training record for that employee/course?
I had a query that would work when I specified the course id, but I wanted to do this for a list of about 25 courses.
SELECT e.empnumber, e.Nickname + ' ' + e.lastname as employeeName
FROM empdata e
WHERE NOT EXISTS (SELECT * FROM #TrainingRecords tr
WHERE NOT EXISTS (SELECT * FROM #TrainingRecords tr
WHERE tr.ClassID = tc.ClassID
AND tr.employee = e.empnumber)
My results seem to work like I want them to, but I have never joined a table without actually joining on a value from each table. In this case I join to a list of values and that just looks odd to me. Is this good or crappy development? Is there a better way this should be done?
We're getting duplicate records b/c we're joining two tables that really don't have a unique common field. Does anyone know of a way to join two tables that aren't completely related?? I know this is contradictory to the entire concept of a relational db :).
I have two tbls (trade & retail) - at the minute I have a query (in just one tbl) which looks like this
SELECT SUM(Total) AS WeekRetailTotal, COUNT(*) AS MonthRetailOrderNo, DATEPART(wk, OrderDate) AS SalesWeek, YEAR(OrderDate) AS SalesYear FROM dbo.Orders_Retail WHERE (account = @Account) AND (OrderStatus <> 'Deleted') AND (PayStatus <> 'Pending') AND (OrderStatus <> 'Refunded') AND (DATEDIFF(d, OrderDate, @StartDate) <= 0) AND (DATEDIFF(d, OrderDate, @EndDate) >= 0) GROUP BY YEAR(OrderDate), DATEPART(wk, OrderDate) ORDER BY YEAR(OrderDate), DATEPART(wk, OrderDate)
I then have the same query (bar a couple of differences) for the trade tbl which looks like this:
SELECT SUM(total) AS WeekTradeTotal, COUNT(*) AS MonthTradeOrderNo, DATEPART(wk, order_date) AS SalesWeek, YEAR(order_date) AS SalesYear FROM dbo.Orders_Trade WHERE (order_status <> 'Deleted') AND (account = @Account) AND (order_status <> 'Removed') AND (order_status <> 'Refunded') AND (TradeCustomerID <> 'Cha928') AND (DATEDIFF(d, order_date, @StartDate) <= 0) AND (DATEDIFF(d, order_date, @EndDate) >= 0) GROUP BY YEAR(order_date), DATEPART(wk, order_date) ORDER BY YEAR(order_date), DATEPART(wk, order_date)
Now what I want to do is make one query which has the same WHERE expression(s) but for both tbls at once.
Because the two tbls have a couple of different names in their fields (I.e the retail tbl identifier is called CustomerID and the Trade tbl identifier is called TradeCustomerID). I thought the best bet would be to first dump the data into a temp tbl giving new fields names so that they all match, and then run the query.
But I haven't got a clue how to write a temp tbl SP, nor how to clean it up afterwards as we are talking a whole lot of data...
Hi,I have a question regarding best practices in database design. In arelational database, is it wise/necessary to sometimes create tablesthat are not related to other tables through a foreign Keyrelationship or does this always indicate some sort of underlyingdesign flaw. Something that requires a re evaluation of the problemdomain?The reason I ask is because in our application, the user can perform xnumber of high level operations (creating/updating projects, creating/answering surveys etc. etc.). Different users can perform differentoperations and each operation can manipulate one or more table. Thispart of the system is done and working. Now there is a requirement tohave some sort of audit logging inside the database (separate from thetext based log file that the application generates anyway). This"audit logging" table will contain high level events that occur insidethe application (which may or may not relate to a particularoperation). This table is in some sense related to every other tablein the database, as well as data that is not in the database itself(exceptions, external events etc.). For example : it might haveentries that specify that at time x user created project y, at time Auser filled out survey B, at time C LDAP server was down, At time D anunauthorized login attempt occurred etc.As I said, these seems to suggest a stand alone, floating table with afew fields that store entries regarding whats going on the systemwithout any direct relationship to other tables in the database. But Ijust feel uneasy about creating such an isolated table. Another optionis to store the "logging" information in another schema/database, butthat doubles the maintainance work load. Not really looking forward tomaintaining/designing two different schemas.I had a look at the microsoft adventureworks database schema diagramand they seem to have 3 standalong tables - AWBuildVersion, ErrorLogand DatabaseLog (unless i am reading it wrong!)Any advice, Information or resources are much appreciated.
I have the following SQL script that works fine, but I like to view all the fields for the records that are not exists in “capdb.dbo.abc “ for “capdb2.dbo.abc� table instead of some fields :
Hi allIn the SP below im (trying to) do some dynamic sql. As you can see the tableto use is set as a variable and the 'exec' method used to run thesqlstatements.My problem is that the 'if exists' method is not doing what i was hoping itcould do.The @presql command returns somewhere between 0 or 50 rows (give and take) -i just want the 'if exists' part to determine if the select statementreturns something or not since i then will have to update a current row - orinsert a new one.Even if there is no rows returned, the 'if exists' command will return true:-/Any suggestions to a different way of approach...?Thanks in advance :-)######## Stored procedure start ########[various @ variables]....declare @presql varchar(200)select @presql = 'SELECT * FROM '+@CurrentDB+' where btsiteID='+cast(@SiteID as varchar(6))+''IF exists((@presql))BEGINdeclare @UpdateSQL varchar(400)set @UpdateSQL = 'UPDATE '+@CurrentDB+' SET btDate='''+cast(@FileDate asvarchar(12))+''''exec(@UpdateSQL)ENDELSEBEGINdeclare @InsertSQL varchar(2000)select @InsertSQL = 'INSERT INTO ' + @CurrentDB + '(btDate,btTime)VALUES('''+ cast(@FileDate as varchar(12)) + ''','+ cast(@ImportTime as varchar(6)) + ')'EXEC(@InsertSQL)END######## Stored procedure end ########
I have two tables with the same field layout, and they both have the same field as the Primary Key. They just contain different data. I would like to know if a record exists in one, or both, tables.
The tables are InvTemp1 and SalesTemp1. The key for both is stock_number.
Here is the command so far:
SELECT COUNT(*)
FROM InvTemp1 INNER JOIN SalesTemp1 ON InvTemp1.Stock_number = SalesTemp1.Stock_number
I am trying to insert values into a table that doesn't exist there yet from another table, my problem is that because it is joined to the other table it keeps on selecting more values that i don't want.
Code Snippet
SET NOCOUNT ON
INSERT INTO _MemberProfileLookupValues (MemberID, OptionID, ValueID) SELECT M.MemberID, '6', CASE M.MaritalStatusID WHEN 1 THEN '7'
WHEN 2 THEN '8'
WHEN 3 THEN '9'
WHEN 4 THEN '10'
END
FROM Members M
INNER JOIN _MemberProfileLookupValues ML
ON M.MemberID = ML.MemberID
WHERE M.Active = 1
AND OptionID <> 6
When i execute that code it returns all the values, let say OptionID = 3 is smoking already exists in the MemberProfileLookupValues table then it is going to select that persons memberID
I want to insert only members values that aren't already in the _MemberProfileLookupValues from the Members table (I think that it is because of the join statement that is in my code, but i don't know how i am going to select members that aren't in the table, because i have a few other queries that are very similar that are inserting different values, so ultimately
ONLY INSERT THE MemberID the values 6 and the statusID of X if it is not in the table already.
Any ideas / help will be greatly appreciated. Please help.
I have been asked to create PK on many tables using a query on all tables where we do not have clustered indexes. Some of the tables contains PK but non-clustered. If in a table there are no PK, then how to decide on which column PK can be created? can we do it with the query without data loss and without human intervention?
Itemlookup tableField names : index_id (primary key), itemno, description.It has a child table, which is ItemPriceHistory tableThe relationship to the child table is one (parent table)-to-many(child table). - It is possible to have no child record for some rowsin the parent table.ItemPriceHistory tableField names: index_id (primary key), itemlookupID (foreign key of theItemlookup table), date begin, priceIt is a child table of the itemlookup table.How can I get all records for both tables with the latest begin date ifexists?I also need to show the records in the parent table if there is norelated record in the child table.Please help
I like writing concise and compact sql code without cursors if possible. My current dilemma has me stuck though.I have 3 tables, but one of them is optionally used and contains a key element of TimeOut to determine which Anesthesia CrnaID to use. It is the optionally used part that has me stumped.
Surgery table CaseID Patient (Sample data: 101,SallyDoe 102,JohnDoe)
AnesthesiaTime table (this table is optionally used, only if the crna's take a break on long cases) CaseID CrnaID TimeIn TimeOut (Sample data: 102,Jack,0800,1030 102,Bart,1030,1130 102,Jack,1130,1215)
Select Patient INNER JOIN Anesthesia produced too many case results. So, I figured out there is an AnesthesiaTime table that only gets used if the anesthesia guys take time-outs. That doesn't happen all the time. I could use TOP 1 on the Anesthesia table, but technically I need to read the AnesthesiaTime table and locate the last time and pull that crna, Jack. I'm not sure how to deal with an optional table. I believe the IF Exists will be pertinent, but not sure of how to build this query. I've tried subquery without success.
Hi all,I'm regularly getting the "deadlocked..you're the victim" message when twothreads work on a table at the same time via JDBC. The two threads don'tupdate the same records. I suspect the cause is related to index or pagelocks, and/or the fact that the UPDATE statements are doing table scansbecause there's no index on the primary key (no, I'm not the DBA!)1. Thread A selects some records to play with:select top 50I.*,M.this,F.thatfrom APInvoice Iinner join M ...inner join F ...where I.CmStatus = 'O'(There is an index on CmStatus + another column called CmTime, so I expectthis index to be used. It's also the only index on the table.)2. Gradually, within the same transaction that did the SELECT, thread Aupdates all 50 selected records:update APInvoiceset CmStatus = 'S',CmTime = getdate()where itemid = (an ID number from the select in step#1).(There is no index on itemid, which is the unique primary key column)(There is an index on CmStatus + CmTime).3. While step#2 is running, thread B starts and does a single update.That's all that thread B does:update APInvoiceset CmStatus = 'C',CmTime = getdate()where itemid = (an ID number that is NOT in the list of records being usedby thread A)I consistently get deadlocks whenever thread A & B run at the same time.To resolve ths problem, I'm looking at the following actions:1. Create a unique primary index on ITEMID.2. Add an "(UPDLOCK)" or "FOR UPDATE" to the SELECT statement.Are these reasonable things to try? Is there something else I should bedoing?
I would like to retrieve 10(dynamic) records of table x (proucts) foreach user in table y (users). Can this be done?I would like the end result to be something like this: (would this bea union?)__________________________y.name | x.pid | x.pnameBob | 1 | forkBob | 2 | spoon.... | |Bob | 10 | potatoJeff | 11 | penetc.....__________________________But also with the number to return based off of a query, ex-select @pcount = count(products)select @ucount = count(users)select @pcount / @ucount10And lump all this in an Stored procedureex-get number of total records in x, divide by total y = zselect z records for each user in y.You would be a master in my book if you can give me hints on this one!Thanks,Jeff
i have database which has 25 tables. all tables have productid column. i need to find total records for product id = 20003 from all the tables in database.
I'm currently setting up a Tabular Model to do some research between several fact tables. Â In this example i have two fact tables (table 1 and table 2)Â which I've created a 1 to 1 relationship on phone number. Â Typically I create a relationship between these tables to find common data between the two. Â However, in this case I am trying to figure out the best way to model the data so that I can easily surface data from one table that does not exist in the other. Â I would liken this to a LEFT JOIN or a WHERE NOT EXISTS in SQL.
Table 1 has all of the data and Table 2 Only has a subset of the data from Table 1. Â What I'm trying to do here is display what attributes in Table 1 may play a part in records not existing in Table 2. What is the best way to model this?
I've built a robust looking Calendar dimension but that's easy because its all so well structured. Every date belongs to a particular week and every week belongs to a particular month and every month belongs to a particular quarter etc. January 1st is always going to be a member of week 1, month 1, quarter 1.But here's the rub, real life isn't as predictable and stable as a calendar.
Lets say you have an table containing personal information. You might have gender and marital status in there and even though they both relate to one person, they're unrelated to each other so how do you put those in a hierarchy? Which one goes first and which second because you can get combinations of either.
What I want to do is be able to show a measure that SUMS the number of hours logged by anyone who is a SiteManager from the ConstructionSites table.
I wanted to do a SUMX of WorkerTimesheets against HoursLogged, but FILTER against WorkerTimesheets[WorkerID] = ConstructionSites[SiteManagerID] so only workers who are also SiteManager would be counted.However, I can't seem to get that to resolve it always throws an error along the lines that it can't determine context.
This is on Sybase but I'm guessing that the same situation would happen on SQL Server. (Please confirm if you know).
I'm looking at these new databases and I'm seeing code similar to this all over the place:
if not exists (select 1 from dbo.t1 where f1 = @p1) begin select @errno = @errno | 1 end
There's a unique clustered in dex on t1.f1.
The execution plan shows this for this statement:
FROM TABLE dbo.t1 EXISTS TABLE : nested iteration. Table Scan. Forward scan. Positioning at start of table.
It's not using my index!!!!!
It seems to be the case with EXISTS statements. Can anybody confirm?
I also hinted to use the index but it still didn't use it.
If the existence check really doesn't use the index, what's a good code alternative to this check?
I did this and it's working great but I wonder if there's a better alternative. I don't really like doing the SET ROWCOUNT 1 and then SET ROWCOUNT 0 thing. SELECT TOP 1 won't work on Sybase, :-(.
SET ROWCOUNT 1 SELECT @cnt = (SELECT 1 FROM dbo.t1 (index ix01) WHERE f1 = @p1 ) SET ROWCOUNT 0
I'm new to my company, although not new to SQL 2005 and I found something interesting. I don't have an ERD yet, and so I was asking a co-worker what table some data was in, they told me a table that is NOT in SQL Server 2005's list of tables, views or synonyms.
I thought that was strange, and so I searched over and over again and still I couldn't find it. Then I did a select statement the table that Access thinks exists and SQL Server does not show and to my shock, the select statement pulled in data!
So how did this happen? How can I find the object in SSMS folder listing of tables/views or whatever and what am I overlooking?
Hello, I am trying to create a table if one with the same name does not exists. My code is: Dim connectionString As String = "Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|PensionDistrict4.mdf;Integrated Security=True;User Instance=True" Dim sqlConnection As SqlConnection = New SqlConnection(connectionString) Dim newTable As String = "CREATE TABLE [" + titleString + "Comments" + "] (ID int NOT NULL PRIMARY KEY IDENTITY, Title varchar(100) NOT NULL, Name varchar(100) NOT NULL, Comment varchar(MAX) NOT NULL, Date datetime NOT NULL)" sqlConnection.Open() Dim sqlExists As String = "IF EXISTS (SELECT * FROM PensionDistrict4 WHERE name = '" + titleString + "Comments" + "')" Dim sqlCommand As New SqlCommand(newTable, sqlConnection) If sqlExists = True Then sqlCommand.Cancel() Else sqlCommand.ExecuteNonQuery() sqlConnection.Close() End If I keep getting a "Input String was incorrect format" for sqlExists? I am new to Transact-SQL statements, any help would be appreciated. Thanks Matt
ok i have 2 tables---one table is name CourseInformation with a field named Instructor and the data in there looks like this 'John Doe'. My other table Instructors has 3 fields InstructorName, LastName, FirstName. I am grabbing the Instructor field from CourseInformation and breaking up the names and inserting them into my instructors table as follows.. Insert into Instructors(InstructorName, LastName, FirstName) (Select Distinct ltrim(SUBSTRING(Instructor,CHARINDEX(' ',Instructor)+1,len(Instructor)))+', '+ SUBSTRING(Instructor,1,CHARINDEX(' ',Instructor)-1), ltrim(SUBSTRING(Instructor,CHARINDEX(' ',Instructor)+1,len(Instructor))) as LName, SUBSTRING(Instructor,1,CHARINDEX(' ',Instructor)-1) as FNamefrom CourseInformation where NOT EXISTS(Select * from instructors where LastName = LName and FirstName = FName) AND Instructor is not null)
Only problem is, I cant get the where not exists clause to work right(of course that wont work what i have cuz the LName and FName columns dont exist, i just did that for demo purposes). I dont want duplicate instructors in there..how can i accomplish this..is there a better way to rewrite my query? Any help is appreciated.
HI All,Which is best among the two 1) NOT IN or 2) NOT EXISTS .If the query is Select col1 from tab1 where col2 NOT IN (Select col 3 from tab2 where cl3=0) OR Select col1 from tab1 where col2 NOT EXISTS (Select col 3 from tab2 where cl3=0)
Hi, Is there any way to check whether a column is there in the table, if it is there i need to drop it through script.
i'm looking for the script, something like this..
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FK_Tbl_Product_Tbl_Products]') and OBJECTPROPERTY(id, N'IsForeignKey') = 1) ALTER TABLE [dbo].[Tbl_Product] DROP CONSTRAINT FK_Tbl_Product_Tbl_Products GO
In the same way i need to check for a column and drop it through script. Any help would be greatly appreciated. Thanks in advance.
Im having a problem with the following can anyone spot how i can fix it? I dont think it likes the begin statement but without it, it has a declare issue.
IF EXISTS (SELECT 1 FROM snapevent.INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE='BASE TABLE' AND TABLE_NAME='FastEp_Snap_OD_Acc' + preports.dbo.f_filedate(getdate()) begin declare @CMD nvarchar(300) Set @CMD = 'drop table Snap_OD_Acc_' + preports.dbo.f_filedate(getdate()) --print @CMD exec (@CMD) end
The secenario is that, A application calls the SP with a parameter(login), and a string of datas ( Acctid level1 level2; Acctid level1 level2; .......)
UserID AcctID Level1 level2 test testee N Y
the SP have to get the first string of data and check if the Acctid exists or not. If yes then update else insert.Then get then the second string of data and check if the Acctid exists or not. If yes then update else insert.
After checking all the strings , it have to check if any Acctids other than acctid mentioned in the string exists in the table for that login, then delete those rows
I'm trying to perform an insert query on a table, but I also want to check to see if the record exists already in the table. It should be fairly simple, but I'm having a time of it. Should be something like:
select * from users u inner join miamiherald m on u.emailaddress = m.advertiseremail where not u.emailaddress not exists <<< (???)
If it does exist, I then want to retrieve two columns from it. HELP!!
The following works in SQL 2005 but NOT SQL 2005 Compact Edition:
IF EXISTS (SELECT ID FROM Court2 WHERE BookingDate = '2007-05-28') UPDATE Court2 SET T1100 = 52 WHERE (BookingDate = '2007-05-28') ELSE INSERT INTO Court2 (BookingDate,T1100) VALUES ('2007-05-28',52)
In CE I get the following error:
There was an error parsing the query. [ Token line number = 1,Token line offset = 1,Token in error = IF ]
I can't find where the problem is - can someone help.
