SQL Server How To's &&&& Dyamic Joins In Stored Procedures (I Think)
Jan 1, 2005
First, does anyone know any good SQL Server sites with articles and whatnot on query design, etc. Not so much basic "How to get data out of your table", but more complex topics like conditional stored procedures, working with triggers, etc. The MSDN is helpful but I often have trouble understanding what's going on.
And second, any pointers (or links) on how I can go about having a stored procedure query a pair of product tables to get information to display in my shopping cart? I've got:
Cart Items StdProducts CustomProducts
----------- ------------- -----------------
partID stdpartID custompartID
IsCustom (Bit)
description description
So depending on if the 'IsCustom' field is True or False, I want to join the [cartitems].[partID] to either the [StdProducts].[stdpartID] or the [CustomProducts].[custompartID] to get the description and other information.
Eventually, I'll probably need to branch this type of procedure out even further (not just either/or scenario) to include the option of pointing to 6-12 different child tables depending on criteria within the parent table for a different scenario. Depending on performance, I could either hard code in the various child tables or have another table containing the table names and the appropriate key that would indicate which table to use.
Hopefully that made some sense, since I'm not entirely positive how to go about this type of thing or what you would call whatever I'm trying to do (and thus what I would be searching for).
I am making a stored procedure, and I need to set some variables based on the results of a JOIN statement. If I something like: SELECT table.field, table.field2 FROM table INNER JOIN table2 ON table.field = string How could I get the results and set them in variables? Any help would be greatly appreciated. GKC
I have a multiple table dataset that needs to be returned, with at least 5 joins, some inner, some left outer.
Currently, this is done via a parameterized stored prodedure, which is used fairly frequently. The parameters only affect the where clause, not the joins.
Would it be better to create the view with the joins already done, then pass in the parameters with the stored procedure? Which is better for overall performance? Which is better for quicker response times to the calling asp.net application?
I want to know the differences between SQL Server 2000 storedprocedures and oracle stored procedures? Do they have differentsyntax? The concept should be the same that the stored proceduresexecute in the database server with better performance?Please advise good references for Oracle stored procedures also.thanks!!
Hey,First, sorry if this post appear twice, because, I can not find my postrecently send, trying to post it once again.I'm out of ideas, so, I thought, will search help here again :(I'm trying to prepare a view for ext. app. This is in normal cases veryeasy, but what if the view structure should be dynamic?!Here is my point (I will siplify the examples).I have a table:create table t_data (id bigint identity (1,1) not null,valvarchar(10) not null,data varchar(100) not nullconstraint [PK_t_data] primary key clustered(id) with fillfactor = 90 on [PRIMARY] )goinsert into t_data (val, data) values('1111111111','1234567890abcdefghijklmnoprstuvwxyz 1234567890abcdefghijklmnoprstuvwxyz67890abcdefghij klmnoprstuvwxyz')insert into t_data (val, data) values('2222222222','1234567890abcdefghijklmnoprstuvwxyz 1234567890abcdefghijklmnoprstuvwxyz12345abcdefghij klmnoprstuvwxyz')insert into t_data (val, data) values('3333333333','12345abcdefghijklmnoprstuvwxyz12345 67890abcdefghijklmnoprstuvwxyz1234567890abcdefghij klmnoprstuvwxyz')insert into t_data (val, data) values('4444444444','67890abcdefghijklmnoprstuvwxyz12345 67890abcdefg12345hijklmnoprstuvwxyz67890abcdefghij klmnoprstuvwxyz')insert into t_data (val, data) values('5555555555','1230abcdefghijklmnoprst12345uvwxyz1 234567890abcdefghijklmnoprstuvwxyz67890abcdefghijk lmnoprstuvwxyz')gocreate table t_dataVal (id bigint identity (1,1) not null,valvarchar(10) not null,fill varchar(4) not nullconstraint [PK_t_dataVal] primary key clustered(id) with fillfactor = 90 on [PRIMARY] )goinsert into t_dataVal (val, fill) values ('1111111111','AAAA')insert into t_dataVal (val, fill) values ('2222222222','KKKK')insert into t_dataVal (val, fill) values ('3333333333','DDDD')insert into t_dataVal (val, fill) values ('4444444444','ZZZZ')insert into t_dataVal (val, fill) values ('5555555555','CCCC')gocreate table t_conf (id bigint identity (1,1) not null,start int not null,length int not null,description varchar(20) not null,constraint [PK_t_conf] primary key clustered(id) with fillfactor = 90 on [PRIMARY] )goinsert into t_conf (start, length, description) values (1,10,'value_1')insert into t_conf (start, length, description) values (11,3,'value_2')insert into t_conf (start, length, description) values(55,15,'value_3')insert into t_conf (start, length, description) values (33,2,'value_4')insert into t_conf (start, length, description) values (88,1,'value_5')insert into t_conf (start, length, description) values (56,7,'value_6')goNow here is the issue:table t_conf contain data, which can be modified by user. The user isseting the appropriate values.Now, there should be a view, which returns:- as headers (collumn names) this what is defined in description columnof t_conf (for example: value_1, value_2 ... value_6)- as values, substrings of all data from t_data, cutted with start andlength values for appropriate decription from t_conf.- first two columns of view, should be column val and fill of t_dataValtableSo the effect should be like this:valfillvalue_1value_2value_3value_4value_5value61111111111AAAA1234567890abc....2222222222KKKK1234567890abc....3333333333DDDD12345abcdefgh....4444444444ZZZZ67890abcdefgh....5555555555CCCC1230abcdefghi....of course, for all other value_x should be the appropriate substringsshown.Sounds simple, hm?Well, I'm trying to do this, since yesterday evening, and can not :(In real life, the call of view/function might happend a lot.The table t_data might have around 4000 records, but the data string islonger (around 3000 characters).Application, might acess a udf, which returns table, and I was focusingin that.Was trying, to create local temp table in function, to insert values,using cursor over t_conf.Unfortunately, everything what I get, is just a vertical representationof the data, and I need it horizontal :(The other problem in function is, that I can not use exec() (wll known)so I can not even create a table,dynamicly, using as column names description value from table t_conf,and as size of field length from this table.Sorry, that the description is maybe not exactly for my problem, butthis is because I'm not even sure, which way to use :(any help will be appreciated!Thank You - Matik
This Might be a really simple thing, however we have just installed SQL server 2005 on a new server, and are having difficulties with the set up of the Store Procedures. Every time we try to modify an existing stored procedure it attempts to save it as an SQL file, unlike in 2000 where it saved it as part of the database itself.
IS there a way inside code for vb.net to programmatically change sorting in a stored procedure???Reason is I need a two way sort and did not want to have to write a SP for each way ....If so Do you have an example.....
Everytime after I restore any database on the sql server 6.5, I have to recompile all the stored procedures in that database.Is there any method to overcome this problem?
Trying to run a SQL Server 6.5 stored procedure via ADO 2.0 in Visual Basic 6. The stored procedure moves roughly 10000 records from one table to another within the same database. The procedure works just fine when run from a SQL editor such as I/SQL, but only transfers a few hundred records when it is executed from a VB application using ADO 2.0. The guilty code can be seen below. Any thoughts?
Public cnSQL As New ADODB.Connection Public qry As New ADODB.Command
With cnSQL .ConnectionString = ConnectStringSQL .ConnectionTimeout = 20 .Open End With
Set qry.ActiveConnection = cnSQL qry.CommandType = adCmdStoredProc qry.CommandTimeout = 120
I have a stored procedure on SQL/Server 2000 that inserts into a #temptable. When I execute it from Query Analyzer it works fine. When I execute it from an ASP using ADO it gives me an Open Error message. When I comment out the #temptable the ASP works fine. Can someone shed some light on this? Do I have to do an ADO opent on the #temptable?
I come from a MySQL background, and have recently began migrating to SQL Server.
I can't, for the life of me, find an example of a stored procedure that does the following in SQL Server: - Multi-lined - Contains both input and output parameters - Sets one of the output parameters within the stored procedure
Can anyone provide some insight? I.e. Why does the following not work?
IF NOT EXISTS (SELECT * FROM syscomments WHERE id = object_id('usp_test')) BEGIN CREATE PROCEDURE "usp_test" (@num1 INT, @num2 INT, @result INT OUTPUT) AS BEGIN DECLARE newValue INT; SET @newValue = num1 + num2; SET @result = @newValue; END; END;
I get these errors (I'm using the Management Studio Express)
Msg 156, Level 15, State 1, Line 3 Incorrect syntax near the keyword 'PROCEDURE'. Msg 155, Level 15, State 2, Line 7 'INT' is not a recognized CURSOR option. Msg 137, Level 15, State 1, Line 8 Must declare the scalar variable "@newValue". Msg 137, Level 15, State 2, Line 9 Must declare the scalar variable "@newValue".
I just installed sql server 2005 on my machine. I've been using Access for some time and have created my stored procedures easily in it. However, this sql server 2005 is so complicated. In Access, all I had to do was "Create a New Query", write my sql statement, name and save it. However, I am having so much trouble with this sql server. For example, when I create a stored procedure in sql server, it has a .sql extension. I am assuming the stored procedure is a file. However, after saving it, I expand my database, expand programmability, and expand stored procedures, yet my new stored procedure is not there. It's placed in a file called projects. I need to access this stored procedure from code, but in visual studio, I get an error message, "Cannot find stored procedure sp_Roster". Here is the code I used to access my stored procedure from vb.net. I thought it would work but it didntDim comm As New SqlCommandDim strsql As StringDim strconn As String strsql = "sp_Roster" strconn = "server=Home; user=sa; pwd=juwar74; database=Book;" With comm .Connection = New SqlConnection(strconn) .CommandText = strsql .CommandType = CommandType.StoredProcedure With .Parameters.Add("TeacherID", SqlDbType.Char) .Value = "DawsMark@aol.com" End With With .Parameters.Add("ClassID", SqlDbType.Int) .Value = CInt(classid) End With With .Parameters.Add("sID", SqlDbType.Int) .Value = ssID End With With .Parameters.Add("sLastName", SqlDbType.Char) .Value = lastname End With With .Parameters.Add("sFirstName", SqlDbType.Char) .Value = firstname End With With .Parameters.Add("sMiddleName", SqlDbType.Char) .Value = middlename End With With .Parameters.Add("Student", SqlDbType.Char) .Value = fullname End With With .Parameters.Add("Password", SqlDbType.Char) .Value = password End With .Connection.Open() .ExecuteNonQuery() With comm.Connection If .State = ConnectionState.Open Then .Close() End If End With End With Here is my procedure that I created and that was saved as sp_Roster.sql in sql server CREATE PROCEDURE sp_Roster ASBEGIN SET NOCOUNT ON; -- Insert statements for procedure here INSERT INTO Roster (TeacherID, ClassID, sID, sLastName, sFirstName, sMiddleName, Student, Password) VALUES (@TeacherID, @ClassID, @sID, @sLastName, @sFirstName, @sMiddleName, @Student, @Password)ENDGO Why isn't ado.net finding it in sql server. Is the sqlstr correct?
In a previous post, someone helped me with creating stored procedures, and I am grateful because I am transitioning from the Access World. Anyway, I get an error at .ExecuteNonQuery in visual studio 2005 when I run the following code: Dim strsql As String Dim strconn As String strsql = "sp_Roster" strconn = "server=xxxx; user=xxxx; pwd=xxxx; database=xxxx;" With comm .Connection = New SqlConnection(strconn) .CommandText = strsql .CommandType = CommandType.StoredProcedure With .Parameters.Add("TeacherID", SqlDbType.Char) .Value = "DawsMark@aol.com" End With With .Parameters.Add("ClassID", SqlDbType.Int) .Value = classid End With With .Parameters.Add("sID", SqlDbType.Int) .Value = ssID End With With .Parameters.Add("sLastName", SqlDbType.Char) .Value = lastname End With With .Parameters.Add("sFirstName", SqlDbType.Char) .Value = firstname End With With .Parameters.Add("sMiddleName", SqlDbType.Char) .Value = middlename End With With .Parameters.Add("Student", SqlDbType.Char) .Value = fullname End With With .Parameters.Add("Password", SqlDbType.Char) .Value = password End With .Connection.Open() .ExecuteNonQuery() With comm.Connection If .State = ConnectionState.Open Then .Close() End If End With End With The error was: Error converting data type char to int. The stored procedure in sql server was as follows CREATE PROCEDURE sp_Roster -- Add the parameters for the stored procedure here@TeacherID varchar(50),@ClassID int,@sID int,@sLastName varchar(50),@sFirstName varchar(50),@sMiddleName varchar(50),@Student varchar(50),@Password varchar(50)ASBEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; -- Insert statements for procedure here INSERT INTO Roster (TeacherID, ClassID, sID, sLastName, sFirstName, sMiddleName, Student, Password) VALUES (@TeacherID, @ClassID, @sID, @sLastName, @sFirstName, @sMiddleName, @Student, @Password)ENDGO The error also says "sqlexception was unhandled by user code. This is strange because this code worked perfectly when connecting to Access and when I used oledb. So how is it the code's problem? Is the stored procedure causing the error or the code. Can someone please help. thanks. <Edited by Dinakar Nethi> Please mask your useird/pwd info in the connection string when posting to a public forum like this </Edit>
In Oracle database we can group our stored procedures in packets. It is very useful when we are creating big business solutions with hundreds stored procedures. Can we do something like this in SQL server?
I don't see the option to debug a stored procedure. I right click on the procedure and should'nt it appear in the properties window. Do I need to install some extra component to get the debugger.
How do you transfer stored procedures from SQL Express 2005 to MS SQL 200 ? I am using the Personal home page starter kit and also need to know if I have to attach and detach the database to my ISP's server?thanks,
About a year ago we inherited a SQL server (7.0) from another division of our company. The time has come to migrate the SQL Server functionality onto a new machine. Before I do this though, I need to figure out what the initial installation configuration was so I can set up the new server with the same specs. I am looking for a system stored procedure(s) that can tell me the following:
Case sensitivity, accent sensitivity, SQL build (SP), character set, etc. Basically I need to know what checkboxes were ticked during the initial set up of the server.
I thought this problem would go away over the Christmas holiday, butof course it did not. I'm trying to write a stored procedureincorporating wildcards, so I can search for variations. Example, ifname 'Smith' is submitted, sproc should retrieve all recordscontaining 'John Smith', 'Zenia Smith', 'Smithfield & Co.' You get theidea.Using SQL Query Analyzer, the queryselect * from filewhere name like '%smith%'works like a charm.But if I write a stored procedure declaring the variable @name andusing a where clause 'where name like '%@name%'', I get zero results.The query doesn't bomb. It just doesn't produce anything - even thoughI know there are records that meet the criteria.Any ideas? Or are sprocs and wildcards incompatible?
SqlParameter param2 = new SqlParameter("@mult2", SqlDbType.Int);
param2.Value = 6;
SqlParameter param1 = new SqlParameter("@mult1", SqlDbType.Int);
param1.Value = 5;
SqlParameter param3 = new SqlParameter("@result", SqlDbType.Int);
param3.Direction = ParameterDirection.Output;
m_cmd.CommandType = CommandType.StoredProcedure;
m_cmd.Parameters.Add(param1);
m_cmd.Parameters.Add(param2);
m_cmd.Parameters.Add(param3);
m_cmd.ExecuteNonQuery();
This works and param3.Value holds the result value. I also notice that I can supply the parameters in any order, and things work fine.
What I want to know is: can I call the stored procedure with parameters, where I haven't supplied the parameter name, and just rely on the parameter order matching instead?
This is a solution for a very specific problem, and it's one that you'll hardly ever use, but it's important to know about that one scenario where it can save your neck. Ordinarily, stored procedures are only recompiled if they're no longer in the procedure cache. But if a stored procedure's execution plan is still in the cache, then SQL Server reuses the compiled storedprocedure and its existing execution plan. This is almost always the best course of action. Almost always, but not always.Sometimes, however, reusing an existing plan doesn't offer the most efficient performance. Imagine, for example, that your stored procedure accepts a parameter that determines the natureof a JOIN operation. The results can vary in a big way, so you wouldn't want your procedure to be locked into an execution plan that might be completely inappropriate for that JOIN. In a highlyspecialized case like this, you might want to force SQL Server to recompile the procedure every time the procedure runs. Doing so comes at a performance cost, but this might be offset by thesavings you gain in not executing the procedure with an awful compiled execution plan. Consider carefully whether to use this approach (or whether to re-engineer the over-design of yourapplication to avoid this situation in the first place). Should you need to instruct SQL Server to recompile each time, add the WITH RECOMPILE directive to the procedure, like this: CREATE PROCEDURE ProcName @Param int /* ... other parameters */ WITH RECOMPILE AS /* ... procedure code follows */ If we omit "WITH RECOMPILE", what will be the consequence? Thanks
Stupid question but please be gentle and answer anyway please....
Background: We have SQL Server 2003 (32bit) running on our servers. Our .Net applications (from old release of VS) are still running on them and using the old databases. From what I understand there is no immediate plans to upgrade the servers. However the developers were just given this new upgrade (2005) SQL Server and VS (and fixing depreciated code etc in the .net apps).
Question: Can the applications and new stored procedures written via the 2005 environment be deployed successfully on the 2003 Servers? Same goes with Reporting Services?
This question is about SQL Server 2005: I have been trying to figure out how to copy tables and stored procedures between 2 databases (on the same server) using SQL Server Management Studio. I have tried right clicking on the table name, "script table as", "drop to", "clipboard", then I click on the 2nd database, and then click on the "tables" . I change the name of the database and click "execute". This creates the table but does not copy the data. I have also tried "create to" "clipboard" and "insert to" "clipboard" and cannot seem to be able to figure out how to get the results that I want. I am new at this but need to get the tables with the data copied along with the stored procedures, even if I have to do them one at a time. When I was using SQL Server 2000, I was able to use DTS to copy objects to other databases easily. Can someone please tell me a way to accomplish what I need to do? I have gotten information here before that was very useful and was hoping that someone can help me again.Thank you so much. Carol Quinn
I have just successfully published an web app and db to a server but when the web app tries to use a stored procedure it says that it cannot find stored procedure.....in my data base......eeeer anyone had this problem
Hey guys,I'm having a problem. I've been given a task to complete. I was given a database, and asked to wrap a website around it with certain functionality. I did this, and added seven stored procedures in the proccess. Everything works, Business Logic Layer, Data Access Layer, error validation, even screwed around with SQL-injection protection. Lovely, yes?However, when my little website gets tested, it's going to be plugged into a fresh database - the exact same database I was given, only with different data in the tables. My stored procedures won't be in that database. I can detect if my stored procedure doesn't exist easily enough by catching the error at runtime and checking the code. I would like to create the stored procedure inside that catch block. I just don't know how.The easy answer is just to use embedded SQL in my application instead of stored procedures. This isn't a commercial application, it's just a task I've been given to test my abilities. But embedded SQL is icky. I'd rather do it properly.
I was just wondering if something could be explained to me.
I have the following:
1. A table which has fields with data types and lengths / sizes 2. A stored procedure for said table which also declares variables with datatype and lengths/ sizes 3. A function in written in VB .net that uses said stored procudure. The code used to add the parameters to the sql command also requires that i give a data type and size.
How come i need to specify data type and length in three different places? Am i doin it wrong?
Any information is greatly appreciated.
Thanks
Im using SQL Server 2000 with Visual Studio .Net using Visual Basic..
Hi, I uploaded a database to a remote server (ISP) who has SQL2005 as do I. They got the database okay, but not all the stored procedures went along for the ride Can anyone tell me how to just simply transfer the stored procedures only to the remote server? Failing that, can you tell me how to export the entire database and be sure that it all goes, not just the tables. I assume you would have to do this via a script because the export wizard only lets you copy the files and I have dome this but the stored procedures do go along. Any help? Tia
Hello Everyone, First problem : I have an application which uses Power Builder and Oracle and my job is to convert it so that it can run on a SQL server database. Oracle allows empty strings - '' - to mean NULL. If the application inserts an empty string in a column of a table, Oracle takes it to mean NULL. How can i have this functionality in SQL Server?
Second Problem: SQL Server does not allow stored procedures like sp_addlogin and sp_droplogin etc., to be executed from within a transaction. So everytime i need to execute these stored procedures thru my application, i disconnect and set autocommit to true and connect again. after executing these stored procedures, i disconnect again , set autocommit to false and then connect again. is this how it should be done or is there some better way of doing it.
All help will be highly appreciated. I really need help on these problems - fast. Thanks
I am used to working in Access and just recently became somewhate proficient using custom functions in modules. I am trying to figure out what the equivalent of functions is in SQL Server. I mean, does a Stored Procedure in SQL Server replace a module in Access? Can you declare different functions in SQL Server like you can in Access? Thanks for your help. Mike
