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)
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.
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
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 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.
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.
Create Table TestMain (TestMainId INT , TestCompanyID INT )
Other Tables :
Create Table TestCompany1 (Id INT , TestCompanyID INT )
Create Table TestCompany2 (Id INT , TestCompanyID INT )
Create Table TestCompany3 (Id INT , TestCompanyID INT )
In this above tables.. I would have a record in the table TestMain and a entry for that specific record would be in any of the tables like TestCompany1,TestCompany2,TestCompany3
Sample Records :
In the table TestMain
1 1000 2 2000 3 3000 4 4000 5 5000 6 6000 7 7000
In the table TestCompany1
1 1000 2 6000
In the table TestCompany2
1 3000 2 4000 3 5000
In the table TestCompany3
1 7000
How do I join those tables and fetch the main record with its subsequent entry from the other tables ?
tblWine tblSpecialOfferWine tblSpecialOffer ID Name ID WineID SpecialOfferID ID Name IsLive ===================== ============================ ========================== 1 Mouton Rothschild 1 1 1 1 February Offer 0 2 Lafite Rothschild 2 1 2 2 March Offer 1 3 Chateau Teyssier 3 2 1
... and the current query I am using is the following along with it's result set ...
SELECT tblWine.ID AS WineID, tblWine.Name AS WineName, tblSpecialOffer.ID AS SpecialOfferID, tblSpecialOffer.Name AS SpecialOfferName
FROM tblWine LEFT OUTER JOIN tblSpecialOfferWine ON tblSpecialOfferWine.WineID = tblWine.ID LEFT OUTER JOIN tblSpecialOffer ON tblSpecialOfferWine.SpecialOfferID = tblSpecialOffer.ID
Results WineID WineName SpecialOfferID SpecialOfferName ================================================== ========= 1 Mouton Rothschild 1 February Offer 1 Mouton Rothschild 2 March Offer 2 Lafite Rothschild 1 February Offer 3 Chateau Teyssier NULL NULL
... but the result set I want is All wines and their associated specials offers but only show details of the offer if the offer is live like so ...
I have a view which has to be versatile enough to perform different calculations. For instance, using the view below I may want the stock level for that particular wine or in another instance I would the need the stock level for all wines that share the same type. Note that I would never need a combonation of both in the same view.
Is there anyway to specify <myVar> before or when calling this view?
CREATE VIEW vwWines AS
SELECT tblWine.ID, tblWine.WineTypeID, StockQty = CASE WHEN <myVar> = 1 THEN tblWine.StockQty ELSE ( SELECT SUM(StockQty) FROM tblWine AS tblWineTwo WHERE tblWine.WineTypeID = tblWineTwo.WineTypeID ) END FROM tblWine Note: This view has been simplified and been done on the fly so may contain errors
hey there I have a series of finacial reports. the girls that work on them want color and the boss wants them to print in black and white. the color back grounds print grayscale so I would like to add a link of some sort that changed the background to transparent when they want to print a report.
I am trying to join Table A to Table B using the below log . Table A should have one unique mathincg record from Table B
option 1. Using registration_key and discharge_dt , looking for exact matching date( end_dt) in table B , if there is more than one record that matches then select lowest ID
option 2.if there is no record that matches option1 then, serch for the previous record with end_dt in table A less than end_dt table B. if there is more than one record then select lowest ID
option 3. if there is no record option 2 then search the next record that matches .. discharge_dt greater than end_Dt , if there is more than one record then select lowest Id
so basically, I am looking for an exact matching date in the same registration_key .. if the exact dt doesn't exist looking for the previous record and get the most closer dt and if there is no prvious record than look for next record,.
so the output should look like
output Registration_key ID end_dt discharge_dt value
I'm trying to achieve something like the following:
SELECT 'page' as type, page_filename as filename, page_title as title, page_metadescription as intro FROM tbl_pages WHERE CONTAINS(*, @searchterm)
IF 1=1 BEGIN UNION all
SELECT 'news' as type, 'thiswillbeafilename.asp' as filename, news_title as title, news_intro as intro FROM tbl_news WHERE CONTAINS(*, @searchterm) END IF 2=2 BEGIN UNION ALL
SELECT 'resource' as type, resource_filename as filename, resource_longtitle as title, resource_summary FROM tbl_resources WHERE CONTAINS(*, @searchterm) END
I'm pretty sure this isn't possible using the approach i have here, however is there an different method i can use to ahcieve the same effect other than using dynamic sql?
Hello all. I am inserting data into a table from a linked server (.XLS file). One of the columns deals with dates. In the .XLS file some ofthe dates are invalid (either wrong format or wrond data). What i am looking for is how to insert only the rows where the dates are correct. My basic structure is:
INSERT INTO PENSIONS(EMPLOY_REF, CONTRIB_CHANGE) SELECT CAST(EMPLOY_REF AS VARCHAR(10)), CAST(CONTRIB_CHANGE AS DATETIME) FROM mockdownload_dd...[Pensions$]
Hi again. Another problem though... Can I make a query in if else statement? For example int querynum; if(querynum==1)<execute query1> else if(querynum==2)<execute query2> else <execute query3>
There is no problem with passing parameters(getquerynum) from my front end application to sql function. I can manage to do it. hehe.
the query looks like this:
DECLARE @querynum number SET @querynum = @getquerynum
what i want to do is,
if(querynum==1) Select * from hremployees else if(querynum==2) Select * from hrapplicants else Select * from pspersonaldata
is it possible by having multiple queries in conditional statement? if so, how to do it in sql language? Thanks -Ron-
