In Cursor: Help To Perform Proper Comparison Using Variable
Jun 7, 2006
Hi All,
I failed to find record when using variable in cursor in WHERE clause:
ID is uniqueidentifier field in the table
DECLARE @EncounterID uniqueidentifier
........
WHERE ID = @EncounterID -> this does not work, though @EncounterID is set properly and can see its value in debugger
WHERE ID = 'E3AE2C5B-06F2-4A3C-A3A4-7D6CC43DE012' -> this works fine and record found
Tried to CAST(@EncounterID as char(40)) but still no luck.
I would greatly appreciate any advise hot to make it working.
Am I using the cursor feature properly here? -- of course there would be actual processing (replacing a while loop) going on and not simple print statements.
Declare @BadgeNumber varchar(20), @name varchar(100), @phone int, @status varchar(25) Declare cursor Cursor For Select jt.BadgeNumber, tj.Name, jt.Phone, zt.status From employees jt join employeestatus zt On jt.id = zt.id
I'm not sure about this one so if someone could help I'd appreciate this.
As shown below I've declared a variable name1 to be used in a while statement substituting for an object name in a select statement (2000 SP3a) and throwing the shown error. Are variables allowed to be used to substitute for object names or is there another problem? Thanks.
What i am trying to do is concatenate variable "@Where" with CURSOR sql statement,inside a procedure . But, it doesn't seem to get the value for the @Where. (I tried with DEBUGGING option of Query Analyzer also).
============================================= SET @Where = '' if IsNull(@Input1,NULL) <> NULL Set @Where = @Where + " AND studentid='" + @input1 +"'"
if isnull(@Input2,NULL) <> NULL Set @Where = @Where + " AND teacherid =' " + @Input2 +"'"
DECLARE curs1 CURSOR SCROLL FOR SELECT firstname FROM school WHERE school ='ABC' + @where ============================================= Please check my SQL Above and Could somebody tell me how can I attach the VARIABLE with CURSOR sql statement ?
I have a problem on setting the value for the variable in a declared cursor. Below is my example, I have declared the cursor c1 once at the top in a stored procedure and open it many times in a loop by setting the variable @str_var to different values. It seems the variable cannot be set after the cursor declared. Please advise how can I solve this issue.
SQL Server 2000 SP4 with AWE hotfix. Windows 2003 SP1.I have a stored procedure which is not working the way I think itshould be.I have a CURSOR which has a variable in the WHERE clause:DECLARE get_tabs CURSOR local fast_forward FORSELECT distinct tablename, id, shcontig1dt, shcontig2dtFROM db_indWHERE dbname = @dbnameORDER BY tablenameIt won't return anything, even when I verify that @dbname has a valueand if I run the query in Query Analyzer with the value, it returnsrows:SELECT distinct tablename, id, shcontig1dt, shcontig2dtFROM db_indWHERE dbname = 'Archive'ORDER BY tablenameDB_Rpt_Fragmentation11575791622006-03-29 09:52:11.7772006-03-2909:52:11.823DtsAdtStdArchive_DataSourceType5175768822006-03-2909:52:11.8702006-03-29 09:52:11.887DtsADTstdArchiveNotUsed3575763122006-03-29 09:52:11.8872006-03-2909:52:12.103I've taken out most of the guts for simplicity, but here's what I'vegot:--CREATE TABLE dbo.db_ind--(--db_ind_tkintIDENTITY,-- id int NULL,-- tablename sysname NOT NULL,-- indid int NULL,-- indexname sysname NOT NULL,-- shcontig1dt datetime NULL,-- defragdt datetime NULL,-- shcontig2dt datetime NULL,-- reindexdt datetime NULL--)ALTER PROCEDURE IDR(@hours int)AS--SET NOCOUNT ON--SET ANSI_WARNINGS OFFDECLARE @tabname varchar(100),@indname varchar(100),@dbname varchar(50),@vsql varchar(1000),@v_hours varchar(4),@shcontig1dtdatetime,@shcontig2dtdatetime,@defragdtdatetime,@reindexdtdatetime,@idint,@indidint,@rundbcursorint,@runtabcursorint,@runindcursorintDECLARE get_dbs CURSOR local fast_forward FORSELECT dbnameFROM db_jobsWHERE idrdate < getdate() - 4or idrdate is nullORDER BY dbnameDECLARE get_tabs CURSOR local fast_forward FORSELECT distinct tablename, id, shcontig1dt, shcontig2dtFROM db_indWHERE dbname = @dbnameORDER BY tablenameDECLARE get_inds CURSOR local fast_forward FORSELECT indid, indexname, defragdt, reindexdtFROM db_indWHERE dbname = @dbnameAND tablename = @tabnameORDER BY indexnameOPEN get_dbsFETCH NEXT FROM get_dbsINTO @dbnameIF @@FETCH_STATUS = 0SELECT @rundbcursor = 1ELSESELECT @rundbcursor = 0SELECT @v_hours = CONVERT(varchar,@hours)--================================================== ================================================== =====--================================================== ================================================== =====--================================================== ================================================== =====WHILE @rundbcursor = 1BEGIN -- db whilePRINT '============================='PRINT @dbnamePRINT '============================='--================================================== ================================================== =====--================================================== ================================================== =====OPEN get_tabsFETCH NEXT FROM get_tabsINTO @tabname, @id, @shcontig1dt, @shcontig2dtIF @@FETCH_STATUS = 0BEGINPRINT 'table: ' + @tabnameSELECT @runtabcursor = 1endELSEBEGINPRINT 'not getting any tables! '-- <<<<< THIS IS WHERE IT HITSSELECT @runtabcursor = 0endWHILE @runtabcursor = 1BEGINPRINT @dbnamePRINT @tabname--================================================== ================================================== =====OPEN get_indsFETCH NEXT FROM get_indsINTO @indid, @indname, @defragdt, @reindexdtIF @@FETCH_STATUS = 0SELECT @runindcursor = 1ELSESELECT @runindcursor = 0WHILE @runindcursor = 1BEGINPRINT 'Index:' + @dbname + '.' + @tabname + '.' + @indnameFETCH NEXT FROM get_indsINTO @indid, @indname, @defragdt, @reindexdtIF @@FETCH_STATUS = 0SELECT @runindcursor = 1ELSESELECT @runindcursor = 0END-- 1st loop through indexesCLOSE get_inds--================================================== ================================================== =====--==========PRINT 'db.tab: ' + @dbname + '.' + @tabname--==========--================================================== ================================================== =====OPEN get_indsFETCH NEXT FROM get_indsINTO @indid, @indname, @defragdt, @reindexdtIF @@FETCH_STATUS = 0SELECT @runindcursor = 1ELSESELECT @runindcursor = 0WHILE @runindcursor = 1BEGINPRINT 'dbname: ' + @dbnamePRINT 'tabname: ' + @tabnamePRINT 'indname: ' + @indnameFETCH NEXT FROM get_indsINTO @indid, @indname, @defragdt, @reindexdtIF @@FETCH_STATUS = 0SELECT @runindcursor = 1ELSESELECT @runindcursor = 0END -- 2nd loop through indexesCLOSE get_inds--================================================== ================================================== =====FETCH NEXT FROM get_tabsINTO @tabname, @id, @shcontig1dt, @shcontig2dtIF @@FETCH_STATUS = 0SELECT @runtabcursor = 1ELSESELECT @runtabcursor = 0END-- loop through tablesCLOSE get_tabs--================================================== ================================================== =====--================================================== ================================================== =====PRINT 'Index Maintenence complete. Job report in[DB_Rpt_Fragmentation]'PRINT ''FETCH NEXT FROM get_dbsINTO @dbnameIF @@FETCH_STATUS = 0SELECT @rundbcursor = 1ELSESELECT @rundbcursor = 0END -- loop through databasesCLOSE get_dbsdeallocate get_dbsdeallocate get_tabsdeallocate get_inds--================================================== ================================================== =====--================================================== ================================================== =====--================================================== ================================================== =====GOAnd this is what I'm getting:=============================Archive=============================(0 row(s) affected)not getting any tables!Index Maintenence complete. Job report in [DB_Rpt_Fragmentation]......etc.Am I missing something obvious?Thank you for any help you can provide!!
Hi, I need a small help. In my stored procedure, i create a table variable and fill it with records based on my query. The ID field within the table is not continous and can have any value in increasing order .e.g. The ID sequence may be like 20, 33, 34, 59, 78, 79... I want to iterate through each record within the table but without using a Cursor. I want to use a loop for this purpose. There are many articles pointing out how to iterate through records in a table variable but that requires the IDs to be continous which is not possible in my case. Can anyone help me solve this problem... Any help is appreciated...
When I execute next query on sqlserver 6.5 nested in stored procedure I can see that 'open testCursor' selected rows using new value of @var. When I execute query on sqlserver 7.0 I can see that 'open testCursor' selected rows using value of @var before 'declare ... cursor'. Is there any way to force sqlserver 7.0 to proccess cursor like it did it before.
select @var = oldValue
declare testCursor cursor for select someColumns from someTable where someColumn = @var
I'm trying to build a select statement for a CURSOR where part of the SQL statement is built using a variable. The following fails to parse:
Declare Cursor1 Cursor For 'select table_name from ' + @database + '.Information_Schema.Tables Where Table_Type = ''Base Table'' order by Table_Name' Open cursor1
That doesn't work, I've also tried using an Execute() statement, no luck there either. Any ideas or suggestions are greatly appreciated.
I can't seem to get a cursor to work when I'm passing in a variable for a column name of the select statement. For example:
declare @col varchar(50)
set @col = 'Temperature'
declare notifycurs cursor scroll for select @col from Table
Obviously this won't work correctly (since the result will simply be 'Temperature' instead of the actual float value for temperature). I tried to use quotes for the entire statement with an EXEC (ie. exec('select '+@col+' from Table' ) but that gave me an error.
Is there a way to pass in a variable for a column name for a curor select statement????
here is the code segment below; ... DECLARE find_dates CURSOR FOR SELECT @SQL = 'select DISTINC(Dates) from ['+@name+'].dbo.['+@t_name+'] order by [Dates] ASC' EXEC (@SQL)
but it gives error, variable assignment is not allowed in a cursor declaration. I need to use dynamic SQL , the only way to access all the dbs and their tables inside. Please help.
I have searched the net for an answer but could not find one. When I declare a table variable and then try to insert fetched row into the table variable like:
Code Snippet declare @table table (col1 nvarchar(50), col2 nvarchar(50)) declare curs for select * from sometable open curs fetch next from curs into @table
I am using a cursor (i know - but this is actually something that is a procedural loop).
So effectively i have a table of names of stored procedures. I now have a store proc that loops around these procs and runs each one in order.
Now i am thinking i would like to be able to set the table it loops around in a variable at the start - is it possible to do this? So effectively use a tablename in a variable to use in the sql to define a cursor?
DECLARE @SOPCursor AS CURSOR; SET @SOPCursor = CURSOR FOR
[Code] ....
The @Table_Name variable is declared, If I replace the delete statement (DELETE FROM @Table_Name ) with (PRINT @table_name) it works and print the table names.
After trying every way I could come up with I can't get a filter clauseto work with a passed variable ...I have a cursor that pulls a filter string from a table (works OK),then I want to use that filter in a second cursor, but can't get thesyntax ...@bakfilter is equal to "MISV2_db_%.BAK" before I try to open and fetchfrom the second cursor. Here is the cursor declaration:DECLARE curFiles CURSOR FORSELECT FileName, FileDateFROM DataFileWHERE (((Active)=1) AND ((FileName) LIKE '@bak_filter'))ORDER BY FileDate DESCWhat do I need to do to get it to use the string contained in@bak_filter?Thanks in advance, Jim
Hi I am ramesh here from go-events.com I am using sql mail to send out emails to my mailing list
I have difficulty combining a select statement with a where clause stored in a variable inside a cursor
The users select the mail content and frequency of delivery and i deliver the mail
I use lots of queries and a stored procedure to retrieve thier preferences. In the end i use a cursor to send out mails to each of them.
Because my query is dynamic, the where clause of my select statement is stored in a variable. I have the following code that does not work
For example
DECLARE overdue3 CURSOR LOCAL FORWARD_ONLY FOR SELECT DISTINCT Events.E_Name, Events.E_SDate, Events.E_City, Events.E_ID FROM Events, IndustryEvents + @sqlquery2 OPEN overdue3
I get an error message at the '+' sign which says, cannot use empty object or column names, use a single space if necessary
How do I combine the select statement with the where clause?
I am stuck in a bit of a conundrum for quite a while now, and I hope someone here will help me figure this one out.
So, first things first: let me explain what I need to do. I am designing a web application that will allow users to consult info available in a SQL2000 database. The user will enter the search criterea, and hopefully the web page will show matching results.
The problem is the results shown aren't available per se in the DB, I need to process the data a bit. I decided to do so on the SQL Server side, though the use of cursors. So, when a user defines his search criteria, I run a stored procedure that begins by building a dynamic sql query and creating a cursor for it. I used a global cursor in order to do so. It looked something like this:
SET @sqlQuery = ... (build the dinamic sql query)
SET @cursorQuery = 'DECLARE myCursor CURSOR GLOBAL FAST_FORWARD FOR ' + @sqlQuery
EXEC @cursorQuery
OPEN myCursor
FETCH NEXT FROM myCursor INTO ...
CLOSE myCursor
DEALLOCATE myCursor
This works fine, if there's only one instance of the stored procedure running at a time. Should another user connect to the site and run a search while someone's at it, it'll fail due to the atempt to create a cursor with the same name.
My first thought was to make the cursor name unique, which led me to:
...
SET @cursorName = 'myCursor' + @uniqueUserID
SET @cursorQuery = 'DECLARE '+ @cursorName + 'CURSOR FAST_FORWARD FOR ' + @sqlQuery
EXEC @cursorQuery
...
The problem with this is that I can't do a FETCH NEXT FROM @cursorName since @cursorName is a char variable holding the cursor name, and not a cursor variable. So to enforce this unique name method the only option I have is to keep creating dynamic sql queries and exucting them. And this makes the sp a bitch to develop and maintain, and I'm guessing it doesn't make it very performant.
So I moved on to my second idea: local cursor variables. The problem with this is that if I create a local cursor variable by executing a dynamic query, I can't extract it from the EXEC (or sp_executesql) context, as it offers no output variable.
I guess my concrete questions are:
Is it possible to execute a dynamic sql query and extract a (cursor) variable from it?Is it possible to populate a local cursor variable with a global cursor, by providing the global cursor's name?Can I create a local cursor variable for a dynamic sql query? How?
Anybody sees another way arround this?Thanks in advance,
STATIC Defines a cursor that makes a temporary copy of the data to be used by the cursor. All requests to the cursor are answered from this temporary table in tempdb; therefore, modifications made to base tables are not reflected in the data returned by fetches made to this cursor, and this cursor does not allow modifications
It say's that modifications is not allowed in the static cursor. I have a questions regarding that
Static Cursor declare ll cursor global static for select name, salary from ag open ll fetch from ll
while @@FETCH_STATUS=0 fetch from ll update ag set salary=200 where 1=1
close ll deallocate ll
In "AG" table, "SALARY" was 100 for all the entries. When I run the Cursor, it showed the salary value as "100" correctly.After the cursor was closed, I run the query select * from AG.But the result had updated to salary 200 as given in the cursor. file says modifications is not allowed in the static cursor.But I am able to update the data using static cursor.
Hello,I have a test database with table A containing 10,000 rows and a tableB containing 100,000 rows. Rows in B are "children" of rows in A -each row in A has 10 related rows in B (ie. B has a foreign key to A).Using ODBC I am executing the following loop 10,000 times, expressedbelow in pseudo-code:"select * from A order by a_pk option (fast 1)""fetch from A result set""select * from B where where fk_to_a = 'xxx' order by b_pk option(fast 1)""fetch from B result set" repeated 10 timesIn the above psueod-code 'xxx' is the primary key of the current Arow. NOTE: it is not a mistake that we are repeatedly doing the Aquery and retrieving only the first row.When the queries use fast-forward-only cursors this takes about 2.5minutes. When the queries use dynamic cursors this takes about 1 hour.Does anyone know why the dynamic cursor is killing performance?Because of the SQL Server ODBC driver it is not possible to havenested/multiple fast-forward-only cursors, hence I need to exploreother alternatives.I can only assume that a different query plan is getting constructedfor the dynamic cursor case versus the fast forward only cursor, but Ihave no way of finding out what that query plan is.All help appreciated.Kevin
I'm trying to implement a sp_MSforeachsp howvever when I call sp_MSforeach_worker I get the following error can you please explain this problem to me so I can over come the issue.
Msg 16958, Level 16, State 3, Procedure sp_MSforeach_worker, Line 31
Could not complete cursor operation because the set options have changed since the cursor was declared.
Msg 16958, Level 16, State 3, Procedure sp_MSforeach_worker, Line 32
Could not complete cursor operation because the set options have changed since the cursor was declared.
Msg 16917, Level 16, State 1, Procedure sp_MSforeach_worker, Line 153
Cursor is not open.
here is the stored procedure:
Alter PROCEDURE [dbo].[sp_MSforeachsp]
@command1 nvarchar(2000)
, @replacechar nchar(1) = N'?'
, @command2 nvarchar(2000) = null
, @command3 nvarchar(2000) = null
, @whereand nvarchar(2000) = null
, @precommand nvarchar(2000) = null
, @postcommand nvarchar(2000) = null
AS
/* This procedure belongs in the "master" database so it is acessible to all databases */
/* This proc returns one or more rows for each stored procedure */
/* @precommand and @postcommand may be used to force a single result set via a temp table. */
declare @retval int
if (@precommand is not null) EXECUTE(@precommand)
/* Create the select */
EXECUTE(N'declare hCForEachTable cursor global for
Hi all - I have posted inquiries on this rather vexing issue before, so I apologize in advance for revisting this. I am trying to create the code to add the parameters for two CheckBoxLists together. One CheckBoxList allows users to choose a group of Customers by Area Code, the other "CBL" allows users to select Customers by a type of Category that these Customers are grouped into. When a user selects Customers via one or the other CBL, I have no problems. If, however, the user wants to get all the Customers from one or more Area Codes who ALSO may or may not be members of one or more Categories; I have had trouble trying to create the proper SQL. What I have so far:Protected Sub btn_CustomerSearchCombined_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btn_CustomerSearchCombined.Click Dim CSC_SqlString As String = "SELECT Customers.CustomerID, Customers.CustomerName, Customers.CategoryID, Customers.EstHours, Customers.Locality, Category.Category FROM Customers INNER JOIN Category ON Customers.CategoryID = Category.CategoryID WHERE " Dim ACItem As ListItem Dim CATItem As ListItem For Each ACItem In cbl_CustomersearchAREA.Items If ACItem.Selected Then CSC_SqlString &= "Customers.AreaCodeID = '" & ACItem.Value & "' OR " End If Next CSC_SqlString &= "' AND " <-- this is the heart of my problem, I believe For Each CATItem In cbl_CustomersearchCAT.Items If CATItem.Selected Then CSC_SqlString &= "Customers.CategoryID = '" & CATItem.Value & "' OR " End If Next CSC_SqlString = Left(CSC_SqlString, Len(CSC_SqlString) - 4) CSC_SqlString &= "ORDER By Categories.Category" sql_CustomersearchGrid.SelectCommand = CSC_SqlString End SubAny help on this is much appreciated, many thanks --
I have a tsql where I need to do a patindex on a variable and check if a record exists to meet the where clause for a IF statement below. What am I doing wrong
declare @l_orderid int set @l_orderid = 18 declare @l_SIGShort varchar(20) set @l_SIGShort = '~KOP~' -- KOP Orders print patindex ( '%~KOP~%', @l_SIGShort) if patindex ( '%~KOP~%', @l_SIGShort) <> 0 and (if exists (select * from orderoptions where orderid = @l_orderid and ordertype = 'KOP'))
Greetings, I seem to be getting a problem during installing SQL 7.0 over the SQL 7.0 beta. It tells me that there are ODBC components need to be upgraded and they are read only ... I can find no way of changing this.
Alternatively if I remove the beta and then install the proper version, will all the old db created under the beta still be recognised ?
Kris Klasen
Act. Manager, Data Warehouse Project Information Management Branch Department of Education
I have been told that simply stopping the SQL server service and backing up the data directory is all I have to do to do a backup of my data. Is this accurate?
Hello: a nice simple question (I hope). Is there a MS SQL equivilant to PROPER (string) which would return "Fred Bloggs" from "FRED BLOGGS" and equally from "FrEd bLoggs" ? I cant find such ....
