I'm having trouble with the statement below. I tried CASE and IF
without success. What I'm trying to do:
There is a field in the database called Business_TelNo. If the field
has some value, I would like to return a generated field
(LaBusinessTelNo), which is the label of Busines_TelNo, reading
'Phone:'
If Business_TelNo has no value, the label should be set to ''.
Something like this:
SELECT i2b_vw_contact.Business_TelNo AS Business_TelNo,
IF (LEN(Business_TelNo) > 0) BEGIN SELECT 'Phone: ' AS LaBusinessTelNo
END ELSE BEGIN SELECT '' AS LaBusinessTelNo END
FROM i2b_vw_contact
This is working:
SELECT i2b_vw_contact.Business_TelNo AS Business_TelNo,
'Phone: ' AS LaBusinessTelNo
FROM i2b_vw_contact
PS: I know it would be much easier to add some logic in the
application but need to do this in SQL.
I am trying to write query that will select calls that only show up when the resolution returned from the case in the sub query is 'y'. When I do the group by some calls will show up twice because of a null and a 'y' resolution return. I want to only select a call if there is a 'y' that shows for all resolutions associated with that call. If there are any null resolutions for the call I don't want it to show up in my returned values. This is what I have so far, but I can't figure out how to make it drop both instances of the callID if one instance is null.
Code:
SELECT C.CallID, P.PrimarySupportGroupID, P.PrimaryTeamName, T1.Resolution, CASE C.CallID WHEN T1.Resolution IS NOT NULL THEN 'Y' ELSE 'N' END FROM HEAT.dbo.CallLog C, (SELECT CallID, CASE WHEN A1.Resolution = '' THEN 'Y' ELSE NULL END AS Resolution FROM HEAT.dbo.Asgnmnt A1) T1, HEAT.dbo.Profile P WHERE C.CallID = T1.CallID AND C.CustID = P.CustID AND (P.PrimarySupportGroupID = 'ATS') AND (P.PrimaryTeamName = 'Beta') GROUP BY C.CallID, P.PrimarySupportGroupID, P.PrimaryTeamName, T1.Resolution
If anyone could help me out with this or at least give me a little information and point me in the right direction I would really appreciate it.
Yet another puzzling question. I remember I saw somewhere a particular syntax to select a column based on a conditional predicate w/o using a user defined function. What I want to accomplish is this : SELECT (if column colA is empty then colB else colA) as colC from SomeTable. Possible ? Not possible? Have I hallucinated ?
Is there a statement to change the column in a select clause?
For example:
select Groups, sum ((if group like '%total%' then select TotalHours else if group like '%Direct%' then select DirectHours endif endif)) as Hours, count(*) from tblGroups. group by Groups.
I have several places where I need to get the id (primary key) of a resource, inserting a row if the resource does not exist (i.e. an artificial key to be used as an FK for another table). I should probably change this varchar key lookup to use a hash index, but that is beside the point.
So the table is essentially like: CREATE TABLE MyLookup(id int identity primary key nonclustered, mykey varchar(256)); CREATE CLUSTERED INDEX mylookup_cidx_mykey ON MyLookup(mykey);
I see two main approaches for how I can do my get-id-with-insert-if-needed.
(Approach 1) DECLARE @id INT; SELECT @id = id FROM MyLookup WHERE mykey = 'some key value'; IF (@id is null) BEGIN
INSERT MyLookup ('some key value'); SET @id = SCOPE_IDENTITY(); END
(Approach 2) DECLARE @id INT; INSERT MyLookup SELECT 'some key value' WHERE NOT EXISTS (SELECT id FROM MyLookup WHERE mykey = 'some key value'); IF (@@ROWCOUNT = 0)
SELECT @id = id FROM MyLookup WHERE mykey = 'some key value'; ELSE
SET @id = SCOPE_IDENTITY();
From some quick tests in profiler, approach 2 seems to be a bit faster and have lower resource utilization. But I'm not sure if it maybe takes some more aggressive locks even in the unnecessary case where the mykey row value of 'some key value' already exists. Approach 2 also looks cleaner to me, but I don't mind a bit of extra code if it gives me better scalability through less lock contention.
Any tip on what is considered the best practice for a conditional insert like this, or a tip on how to get detailed lock info for a query? The lock info for profiler was all greek to me, it just had a hex value with each lock acquired/released, so I have no idea what it was telling me. Is my only solution to just run exhaustive tests and look at the perf numbers from the black box?
Hi all, I created a stored procedure which perfoms a simple select like this: CREATE PROCEDURE Reports_Category ( @loc varchar(255), @pnum varchar(255) ) AS declare @vSQL nvarchar(1000) set @vSQL = 'SELECT ' + @loc + ', ' + @pnum + ' FROM Category ' exec sp_executesql @vSQL RETURNGO It takes field names as parameters. What happens is that when I supply value to only one parameter, the procedure gives error as it is expecting both values. Is there a way to make these parameters work like an 'OR' so that the procedure returns a dataset even if there is only one value supllied. Please help, Thanks, bullpit
I am trying to write a Transact-SQL statement and am having no success. I have a customers table that has some duplicate Customer Numbers in it, however the records do have a unique Reference Number. I am trying select all records that match a list of Customer Numbers but if there are more than 1 matching Customer Number I only want the one with the largest Reference Number.
My BASIC Select Statement is:
SELECT Cust_Ref_No, Customer_No, Customer_Name, Address1, Address2, Suburb, State, Postcode, Phone FROM Customers WHERE Customer_No IN (SELECT Customer_No FROM temp_Customers)
Much to my HORROR I found that what I am trying to do is simple in MS Access using the “First” Function – Such as below:
SELECT First(Cust_Ref_No) AS Cust_Ref_No, Customer_No FROM Customers GROUP BY Customer_No ORDER BY First(Cust_Ref_No), Customer_No;
There appears to be no “First” Function in Transact-SQL. Is someone able to show me how to achieve the same results in Transact-SQL as I can get with MS Access (I’d HATE to think that MS Access has more functionality in querying data than SQL Server in any way at all)?
P.S. I really need to run the select statement as one step rather than splitting it up into parts.
Is there a way in order to execute a subscribed report based on a certain criteria?
For example, let's say send a report to users when data exist on the report else if no data is returned by the query executed by the report then it will not send the report to users.
My current situation here is that users tend to say that this should not happen, since no pertinent information is contained in the report, why would they receive email with blank data in it.
hiI need to write a stored procedure that takes input parameters,andaccording to these parameters the retrieved fields in a selectstatement are chosen.what i need to know is how to make the fields of the select statementconditional,taking in consideration that it is more than one fieldaddedfor exampleSQLStmt="select"if param1 thenSQLStmt=SQLStmt+ field1end ifif param2 thenSQLStmt=SQLStmt+ field2end if
I have the following code in the color property of a textbox. However, when I run my report all of the values in this column display in green regardless of their value.
I want to know how I can create conditional FROM WHERE clauses like below ..
SELECT X,X,X FROM CASE @intAltSQL > 0 Then Blah Blah Blah END CASE @intAltSQL = 0 Then Blah END WHERE CASE @intAltSQL > 0 Then Blah Blah Blah END CASE @intAltSQL = 0 Then Blah END
Im faced with the following design issue.. on my site there are different profiles: a city profile, a restaurant profile and a user profile. in my DB:City profiles are stored in tbCities cityID int PK shortname nvarchar(50) forumID int FK (...) Restaurant profiles are stored in tbRests restID int PK shortname nvarchar(50) forumID int FK (...) User profiles are stored in tbUsers userID int PK shortname nvarchar(50) forumID int FK (...) as you can see a single ID value (for CityID,restID or userid) might occur in multiple tables (e.g. ID 12 may exist in tbRests and in tbUsers)Each of these profile owners can start a forum on their profile. forumID in each of the above tables is a FK to the PK in tbForums:forumID intforumname nvarchar(50) (...) Now imagine the following: a site visitor searches ALL forums...say he finds the following forums:ForumID Forumname1 you opinion on politics2 is there life in space?3 who should be the next president of the USA? a user may want to click on the forum name to go to the profile the forum belongs to.And then there's a problem, because I dont know in which table I should look for the forum ID...OR I would have to scan all tables (tbCities,tbRests and tbUsers) for that specific forumid,which is time-consuming and I dont want that! so if a user would click on forumID 2 (is there life in space?) I want to do a conditional inner join for the tablecontainingforumID (which may be tbCities,tbRests or tbUsers) select tablecontainingforumID.shortname FROM tablecontainingforumID tINNER JOIN tbForums f ON t.ForumID=f.ForumIDwhere f.ForumID=2 I hope my problem is clear..any suggestions are welcome (im even willing to change my DB design if that would increase effectivity)
I encounter a T-Sql problem related to if conditional processing:The following script execute an insert statement depending on whether column 'ReportTitle' exists in table ReportPreferences. However it gets executed even when ReportTitle column is not present.Could anyone offer some advice? IF(Coalesce(Col_length('ReportPreferences','ReportTitle'),0) > 0) BeginINSERT INTO dbo.DefaultsSELECT FinancialPlannerID,ReportTitleFROM dbo.ReportPreferencesendGO
I have a stored procedure that performs a search function with params:@username nvarchar(50)@country nvarchar(50)and like 10 more.A user may provide values for these params optionally.So when the @username var is left blank, there should be no filtering on the username field (every field should be selected regardless of the username)Currently my statement is:select username,country from myUsers whereusername=@username and country=@countryWith this statement when a user provides no value for username the username field selects on ''m which returns ofcourse nothing...What can I do to solve this?Thanks!
Hi, is it possible to do a conditional WHERE in T-SQL? I have a table with a column that consists of a reference that starts with either a single alpha character or two alpha characters followed by four numeric digits (the numeric portion is always unique but the alpha isn’t). E.g. A1234, AB1235, AB1236, C1237, HT1238. What I want to do is select a range of rows based on the numeric portion of this reference column. In other words I want to select say 50 rows starting from row 1000 (rows 1000 to 1050) regardless of whether there is one or two alpha characters preceding the numerics.The Stored procedure I have so far works (using COUNT for testing) for selecting a range of rows that has two alpha's at the start. However, if I simply add an OR to the WHERE to select rows where there is a single alpha in the reference column, when a single alpha reference is found it will fail the first logical check for two alpha's giving an error condition. Therefore, how can I incorporate a conditional WHERE using IF or some alternative method, so that it will also give me all the rows in the number sequence that start with either single or double alpha's within the same SELECT / WHERE statement?
Thanks for any help.ALTER PROCEDURE [dbo].[sp_Test]
( @startRef int, @endRef int )
AS
BEGIN
SELECT Count(*) FROM myTable WHERE ((SUBSTRING(Ref,3,LEN(Ref)-2) BETWEEN @startRef AND (@startRef + @endRef)))
I have an SqlDataSource that uses a value from the query string in the WHERE clause of the sql statement. The sql is something like this: SELECT * FROM myTable WHERE myfield = @myfield and I have the QueryStringParameter setup like this: <asp:QueryStringParameter Name="myfield" QueryStringField="myfield" /> What I need is for the sql statement to return all records in the case that "myfield" is not defined in the query string. How would I implement this? Thanks, Joshua Foulk
Hello all, my update statement works as expected, but lacks some conditional logic. How can I change the statement to not decrement qtyonhand if the quantity is 0? Additionally, I would need to return to the calling application something that would allow me to populate a label with a message to the user.. How can that be accomplished? Here is my sproc:CREATE PROCEDURE [webuser].[cssp_removeItem] @lblID int AS Update cstb_inventoryset qtyonhand = qtyonhand -1where Id = @lblIDGO Here is my app code: Try Dim cmd As SqlCommand = cn.CreateCommand cmd = New SqlCommand("cssp_removeItem", cn) cmd.CommandType = CommandType.StoredProcedure With cmd cmd.Parameters.Add("@lblId", SqlDbType.Int).Value = lblId.Text End With If Not cn.State = ConnectionState.Open Then cn.Open() End If cmd.ExecuteNonQuery() Catch ex As Exception Response.Write(ex.ToString) Finally If Not cn.State = ConnectionState.Closed Then cn.Close() cn = Nothing End If
Hi, [SQL 2005 Express] I would like a DropDownList to be populated differently depending on the selected value in a FormView. If the FormView's selected value (CompanyID) is 2, then the DropDownList should show all Advisers from the relevant Company. Otherwise, the DropDownList should show all Advisers from the relevant Company where the TypeID field is 3. Here is the SQL for case 1: SELECT AdviserID, AdviserName FROM Advisers WHERE (CompanyID = @CompanyID). Here's the SQL for case 2: SELECT AdviserID, AdviserName FROM Advisers WHERE (CompanyID = @CompanyID) AND (TypeID = 3). Here's my best (failed) attempt to get what I want: SELECT AdviserID, AdviserName FROM Advisers WHERE IF @CompanyID = 2 THEN BEGIN (CompanyID = @CompanyID) END ELSE BEGIN (CompanyID = @CompanyID) AND (TypeID = 3) END I've also tried: SELECT AdviserID, AdviserName FROM Advisers WHERE CASE @CompanyID WHEN 2 THEN (CompanyID = @CompanyID) ELSE (CompanyID = @CompanyID) AND (TypeID = 3) END and SELECT AdviserID, AdviserName FROM Advisers WHERE CASE WHEN (@CompanyID = 2) THEN (CompanyID = @CompanyID) ELSE (CompanyID = @CompanyID) AND (TypeID = 3) END I'd be very grateul to know (a) what the correct syntax for this is and (b) if it can be achieved using a parametised query, rather than a stored procedure. Thanks very much. Regards Gary
I'm wondering if one can designate a conditional foreign key that relates to one of many different tables depending on the "type" column in the foreign key's. My goal is to come up with some SQL code that will allow for this in a Create table statement. (By the way I'm using MS SQL-7 but I'm wondering if this can be done in general.)
I have two simple cases below that show illustrate what I'm trying to do: Thanks in advance, -JerryZZ
--------------------------------------------------------- Case 1: The foreign key relation is to a primary key
Table: Invoices -Fields: ---InvoiceID ..... (primary key) ---BilleeID ...... (fkey to Manfacturers.ManfID IF BilleeType=M) ...................(fkey to Distibutors.DistID IF BilleeType=D) ---BilleeType .....(constraint = M or D)
--------------------------------------------------------- Case 2: The foreign key relation is to a unique "not null" non-primary key
Table: InvoicesEmail -Fields: ---InvoiceID ..... (primary key) ---EmailAddress .. (fkey to Manfacturers.EmailAddress IF BilleeType=M) ...................(fkey to Distibutors.EmailAddress IF BilleeType=D) ---BilleeType .....(constraint = M or D)
Hi, ladies and gentelmen! Can you help me with following trouble: I got a table (let it be called SomeTable) in which there's one nullable field (let's call it SomeField) among many others. PRIMARY KEY for SomeTable is of INT IDENTITY type. Business rules are following: only records that have SomeField IS NULL can be deleted, so I need to perform conditional delete (for cases like DELETE SomeTable). I don't like idea about using SP here, so I tried to solve the task by means of trigger. However, when DELETE clause is used within a transaction and there're records affected by the trigger that don't match business rule, trigger uses ROLLBACK TRAN and then deletes only matching rows from target table. Everything works fine with our SomeTable, but not so fine with the transaction, because due to ROLLBACK TRAN statement in trigger body this transaction is rolled back (as it is described in documentation). But I don't wanna ALL my transaction rolled back! So, is there in SQL Server 7.0 any way to rollback only changes that caused trigger to fire? Something like ROLLBACK TRIGGER?
I would like to write the following (pseudo) stored procedure, but am having problem with the syntax:
Create Procedure spSort @IDContract nvarchar(10) @SortOrder int
SELECT * FROM Contracts WHERE IDContract = @IDContract IF @SortOrder = 0 BEGIN ORDER BY ContractDate END IF @SortOrder = 1 THEN BEGIN ORDER BY ShippingPeriod END
The problem is in conditionally setting the sort order. The actual sp is quite complex and I don't really want to have to use two procedures (one for ordering by ShippingPeriod and one for ordering by ContractDate
SELECT PIN, MAX(CASE WHEN HEADER = 'ADDRESS DETAILS' AND PROPERTY = 'LINE 1' THEN VALUE ELSE NULL END) AS address1, MAX(CASE WHEN HEADER = 'ADDRESS DETAILS' AND PROPERTY = 'LINE 2' THEN VALUE ELSE NULL END) AS address2, MAX(CASE WHEN HEADER = 'ADDRESS DETAILS' AND PROPERTY = 'LINE 3' THEN VALUE ELSE NULL END) AS address3, MAX(CASE WHEN HEADER = 'ACOMPANY' AND PROPERTY = 'Membership Number' THEN VALUE ELSE NULL END) AS MemberNo, MAX(CASE WHEN HEADER = 'CONTACT DETAILS' AND PROPERTY = 'Preferred method of contact*' THEN VALUE ELSE NULL END) AS Tel1, MAX(CASE WHEN HEADER = 'CONTACT DETAILS' AND PROPERTY = 'Tel number (o/h) e.g. 011 2690000' THEN VALUE ELSE NULL END) AS Tel2, MAX(CASE WHEN HEADER = 'CONTACT DETAILS' AND PROPERTY = 'Mobile number e.g. 0821234567' THEN VALUE ELSE NULL END) AS Tel3, MAX(CASE WHEN HEADER = 'CONTACT DETAILS' AND PROPERTY = 'Fax number e.g. 011 2691000' THEN VALUE ELSE NULL END) AS Tel4, MAX(CASE WHEN HEADER = 'Date Of Birth' AND PROPERTY = 'eg. 04 Jan 1965' THEN VALUE ELSE NULL END) AS DOB, MAX(CASE WHEN HEADER = 'Email address' AND PROPERTY = 'Email Address' THEN VALUE ELSE NULL END) AS Email, MAX(CASE WHEN HEADER = 'ID Number' AND PROPERTY = 'ID Number' THEN VALUE ELSE NULL END) AS IDNumber, MAX(CASE WHEN HEADER = 'Member Information' AND PROPERTY = 'Title' THEN VALUE ELSE NULL END) AS Title, MAX(CASE WHEN HEADER = 'Member Information' AND PROPERTY = 'Initials' THEN VALUE ELSE NULL END) AS Initials, MAX(CASE WHEN HEADER = 'Member Information' AND PROPERTY = 'Firstname' THEN VALUE ELSE NULL END) AS Firstname, MAX(CASE WHEN HEADER = 'Member Information' AND PROPERTY = 'Surname' THEN VALUE ELSE NULL END) AS Surname, MAX(CASE WHEN HEADER = 'ACOMPANY' AND PROPERTY = 'Membership Number' THEN STATUS ELSE NULL END) AS STATUS
FROM
FULLSOURCE
GROUP BY PIN
Now how can I reverse this to insert all the values back to tbl FULLSOURCE from maybe an updated SSOTARGET Tbl. FULLSOURCE looks like this:
I have a trigger that updates values in a table when col2 is updated by a stored procedure.
I'd like to make this a conditonal trigger to prevent negative values from being inserted in the table. I'm not familiar with the syntax of triggers enough to get this to work and I've search for a reference with no luck.
Here's the current trigger code:
Code:
FOR INSERT, UPDATE AS UPDATE table1 SET col4= col1 - col2 - col3
I need to evaulate (col1 - col2 - col3) to see if it's less than zero. If it is, I want to set col4=0.
This is what I've tried, but it doesn't work. Any help is appreciated:
Code:
FOR INSERT, UPDATE AS select col1, col2, col3 from table1 if (col1 - col2 - col3) < 0 UPDATE table1 SET col4 = 0 else UPDATE table1 SET col4= col1 - col2 - col3
I need to do a conditional insert. This is what I have tried, it does not work. What am I doing incorrectly?
IF (SELECT COUNT(*) FROM TBL1 INNER JOIN TBL2 ON TBL1.MODEL_ID = TBL2.MODEL_ID INNER JOIN TBL3 ON TBL1.PRO_TYPE = TBL3.TYPE INNER JOIN TBL4 ON TBL1.PRO_SITE = TBL4.WHDESC) > 0
INSERT INTO TBL5 SELECT TBL1.PRO_SITE, TBL1.MODEL_ID, TBL1.NUM_SLOTS, TBL1.TARGET_DAYS, GETDATE() AS Expr1, TBL3.TYPE_ID, NULL AS Expr2, TBL1.NUM_SLOTS AS Expr3, NULL AS Expr4, NULL AS Expr5, 0 AS RAMP FROM TBL1 INNER JOIN TBL2 ON TBL1.MODEL_ID = TBL2.MODEL_ID INNER JOIN TBL3 ON TBL1.PRO_TYPE = TBL3.TYPE INNER JOIN TBL4 ON TBL1.PRO_SITE = TBL4.WHDESC
UPDATE TBL5 SET TEAMS=0 GO UPDATE TBL5 SET TEAMS = (SELECT NUM_SLOTS FROM TBL6 R1 WHERE (R1.TEAM_ID = TBL5.TEAM_ID) ) WHERE (TEAM_ID = (SELECT TEAM_ID FROM TBL6 R3 WHERE (R3.TEAM_ID = TBL5.TEAM_ID))) GO UPDATE TBL5 SET TOTALTEAMS = TEAMS + RAMP GO
I need to do a conditional because sometimes the select that returns data contains no records.
I have a job which exports and emails the data from a table (subject to some conditions) . The data is exported to a test file. I donot want to send the email if there are no rows exported. or the filesieze is 0. Otherwsie I want to send the email with this text file as attachement.
