Have a situation when converting from Oracle SP's to SQL SP's. The old
oracle cursor was roughly as follows
CURSOR cur_rsStock IS
select
*
from
(select StockRowId, CategoryId
from
STOCKDISPOSABLE
where
STOCKDEFID=numDefId
ORDER BY
STOCKROWID
)
where
ROWNUM <= numQuantity;
The closest I can get in MS SQL is as follows :
declare cur_rsStock
CURSOR for
select top @numQuantity
StockRowId, CategoryId
from
STOCKDISPOSABLE
where
STOCKDEFID=numDefId
ORDER BY
STOCKROWID
But, SQL doesn't allow variables next to top. I know I can assign the whole
select statement to a string and use exec to exec the string to get a
recordset but how can I point a cursor to receive its output?
i.e.
set @strSQl = select top ' + @numQuantity + ' StockRowId, CategoryId
.......
exec @strSQL
but how do I do
declare cur_rsStock
set cur_rsStock = ( exec @strSQL)
I've looked up Books Online on Dynamic Cursor/ Dynamic SQL Statement.
Using the examples given in Books Online returns compilation errors. See below.
Does anyone know how to use Dynamic Cursor/ Dynamic SQL Statement?
James
-- SQL ---------------
EXEC SQL BEGIN DECLARE SECTION; char szCommand[] = "SELECT au_fname FROM authors WHERE au_lname = ?"; char szLastName[] = "White"; char szFirstName[30]; EXEC SQL END DECLARE SECTION;
EXEC SQL DECLARE author_cursor CURSOR FOR select_statement;
EXEC SQL PREPARE select_statement FROM :szCommand;
EXEC SQL OPEN author_cursor USING :szLastName; EXEC SQL FETCH author_cursor INTO :szFirstName;
--Error-------------------- Server: Msg 170, Level 15, State 1, Line 23 Line 23: Incorrect syntax near ';'. Server: Msg 1038, Level 15, State 1, Line 24 Cannot use empty object or column names. Use a single space if necessary. Server: Msg 1038, Level 15, State 1, Line 25 Cannot use empty object or column names. Use a single space if necessary. Server: Msg 170, Level 15, State 1, Line 27 Line 27: Incorrect syntax near ';'. Server: Msg 170, Level 15, State 1, Line 30 Line 30: Incorrect syntax near 'select_statement'. Server: Msg 170, Level 15, State 1, Line 33 Line 33: Incorrect syntax near 'select_statement'. Server: Msg 102, Level 15, State 1, Line 35 Incorrect syntax near 'author_cursor'. Server: Msg 170, Level 15, State 1, Line 36 Line 36: Incorrect syntax near ':'.
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 need to pass a list of values into a cursor as such...
DECLARE @group_SQL varchar(255)
SET @group_SQL = 'SELECT group_id FROM groups where group_id in (' + @group_id + ')'
DECLARE groupContact_import_cursor CURSOR FOR EXEC(@group_SQL) OPEN groupContact_import_cursor FETCH NEXT FROM groupContact_import_cursor INTO @group_id WHILE (@@FETCH_STATUS = 0) BEGIN insert into groupContacts (group_id, contact_id) values (@group_id, @new_cid) FETCH NEXT FROM groupContact_import_cursor INTO @group_id END CLOSE groupContact_import_cursor DEALLOCATE groupContact_import_cursor
But MS SQL doesn't seem to like the FOR EXEC(@group_SQL). Can someone shed some light?
I am trying to use a dynamic cursor in a stored procedure: The code looks like this :
/************************************************** *** set @sFormula = 'Monthlyformula' set @sStartDate = '02/01/2004' set @sEndDate = '02/01/2004'
exec('DECLARE APPGRIDROWS_METRICS CURSOR FOR select populateid From appgridrows where histdisplaygrid = 3 And '+ @sFormula +' Is Null and exists (SELECT 1 From PAYROLL_DATA_PERIOD as h Where h.id=1 and h.populateid=appgridrows.populateid and h.StartDate between '+ @sStartDate +' and '+ @sEndDate +')' ) /************************************************** ***
And this is what it is interpreting
select populateid From appgridrows where histdisplaygrid = 3 And Monthlyformula Is Null and exists (SELECT 1 From PAYROLL_DATA_PERIOD as h Where h.id=1 and h.populateid=appgridrows.populateid and h.StartDate between 02/01/2004 and 02/01/2004)
My problem is Is there anyway that I can put the quotes before those dates('02/01/2004') so that my cursor has some records returned
I have a situation where the SQL for my cursor MUST be assembled in a buffer, but I cannot get the cursor declaration to accept my buffer as the SQL statement.
these attempts did not work:
DECLARE crsCursor CURSOR FOR @vchrSQL DECLARE crsCursor CURSOR FOR (@vchrSQL)
Does anybody know if you definitely can or definitely cannot use dynamic SQL with cursors?
I am trying to do dynamic Select for Cursor. The dynamic would be like this: IF CONDITION1 IS TRUE: SELECT CustomerTenderID, CustomerSiteID, ContractPeriod, SupplierID FROM dbo.tnd_TenderSiteRateConsumptionView WHERE CustomerTenderID = @CustomerTenderID IF CONDITION2 IS TRUE: SELECT CustomerTenderID, CustomerSiteID, ContractPeriod, SupplierID FROM dbo.tnd_TenderSiteRateConsumptionView WHERE CustomerTenderID = @CustomerTenderID AND CustomerSiteID = @CustomerSiteID
etc etc
Here's the cursor
DECLARE RateList CURSOR FOR SELECT CustomerTenderID, CustomerSiteID, ContractPeriod, SupplierID FROM dbo.tnd_TenderSiteRateConsumptionView WHERE (BASED ON CONDITION) ORDER BY CustomerTenderID, CustomerSiteID, SupplierID, ContractPeriod
OPEN RateList FETCH NEXT FROM RateList INTO@CustomerTenderID, @ReturnedCustomerSiteID, @ReturnedContractPeriod, @ReturnedSupplierID WHILE @@FETCH_STATUS = 0 BEGIN SET @rowNum = @rowNum + 1
-- DO SOME FUNKY STUFF
FETCH NEXT FROM RateList INTO@CustomerTenderID, @ReturnedCustomerSiteID, @ReturnedContractPeriod, @ReturnedSupplierID
Hi Everybody,I have a probs with dynamic generation.I am writing the probs======================================create proc testasdeclare @query varchar(500)set @query = 'select * from table'----------------------------------------------declare mycur Cursor for Select * from table |open mycur |----------------------------------------------but instate of above block how can I dynamically generate this query?---------------------------------------declare mycur Cursor for exec (@query) |---------------------------------------Or tell me the way.RegardsArijit Chatterjee
Hi,is it possible to create a cursor from a dynamic string?Like:DECLARE @cursor nvarchar(1000)SET @cursor = N'SELECT product.product_idFROM product WHERE fund_amt > 0'DECLARE ic_uv_cursor CURSOR FOR @cursorinstead of using this--SELECT product.product_id--FROM product WHERE fund_amt > 0 -- AND mpc_product.status= 'aktiv'Havn't found anything in the net...Thanks,Peppi
Hello everybody!I have a small table "ABC" like this:id_position | value---------------------------1 | 112 | 223 | 33I try to use a dynamic cursor as below.When the statement "order by id_position" in declare part of the cursor_abcis omitted - cursor work as it should.But when the statement "order by id_position" is used, cursor behave asstatic one.What's the matter, does anybody know?Code:declare @id_position as int, @value as intDECLARE cursor_abc CURSORFORselect id_position, value from abcorder by id_positionset nocount onopen cursor_abcFETCH NEXT FROM cursor_abcINTO @id_position, @valueWHILE @@FETCH_STATUS = 0BEGINprint @id_positionprint @valueprint '----------------------------'update abc set value=666 --next reading should give value=666FETCH NEXT FROM cursor_abcINTO @id_position, @valueENDCLOSE cursor_abcDEALLOCATE cursor_abcGORegardsLucas
i read in the SET ROWCOUNT documentation URL.... that 'The ROWCOUNT option does not affect dynamic cursors', it does affect my dynamic cursor created in a table function which looks like this :
CREATE FUNCTION MyTableFunction()Â RETURNS @MyTable TABLE (MYFIELD INTEGER) AS BEGIN Â DECLARE @xxx INTEGER Â DECLARE My_Cursor CURSOR DYNAMIC FOR Â [code]...
I would like the number of rows retruned by MyTableFunction limited to 2, but NOT the inside proc cursor's select !Set Rowcount 0 is forbidden in table function. I cannot use TOP in select * from MyTableFunction instead of setting ROWCOUNT to 2. I'm using SQL Server 2008 or 2012.
Hi, In a stored procedure (SP1) I call another stored procedure (SP2), passing along parameters. In SP2 I dynamically build cursor c1. I can execute SP2 without any problems but when I start SP1 I get the following message:
Msg 16916, Level 16, State 1, Procedure SP2, Line 114 A cursor with the name 'C1' does not exist.
Yes, the cursor is of type GLOBAL. I am sure I miss something here ... Any help is highly appreciated !
Ok I have a query "SELECT ColumnNames FROM tbl1" let's say the values returned are "age,sex,race".
Now I want to be able to create an "update" statement like "UPATE tbl2 SET Col2 = age + sex + race" dynamically and execute this UPDATE statement. So, if the next select statement returns "age, sex, race, gender" then the script should create "UPDATE tbl2 SET Col2 = age + sex + race + gender" and execute it.
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,
I need to find all uses of special characters in a database. I used the following code to do this:
USE dbName GO IF OBJECT_ID('tempdb.dbo.#Results') IS NOT NULL DROP TABLE #Results GO
[code]...
This will check all tables in the database, but if you want to check specific tables you can uncomment the line in the where clause and specify tables to be checked. The query will return any text fields that have any characters other than letters, numbers or spaces.
This code works fine for me because all the tables in my database have single column primary keys. However I know how much Jeff Moden hates cursors or RBAR queries, so my question is could this have been done by any method other than using a cursor?
I'm just know basic SQL but not enough to write any complex queries.The problem I'm facing right now keeps me thinking to use a Cursor butI've seen a lot of posts on here saying Cursors are bad so I'm hopingthere is a complex query that can give me the data I need.I have about 6 pages in website where I need to display a datagrid ofinformation. There should be 5 columns, Filename, and then 4 CategoryTitles (These category titles are stored in a table calledPageCategory). I have another table, XREF_Doc_Page that stores thePageID, DocID (ID to know what file it is), and PageCategoryID. So Ican query this table with a pageID to see all the results that shouldbe on this page but I don't know how to format it the way I need mydatagrid?In order to have the records from PageCategory be columns, is this acrosstab query or something?My only thoughts right now are to user a cursor to query Pagecategoryand build a temp table somehow with these as the columns?? (Not surehow'd that would work yet).So the datagrid would have the 5 columns like I said and then justlist all files associated with this page and put a checkmark underwhichever category it was assigned to (example below...)Files PageCat1 PageCat2PageCat3 PageCat4abc.pdf Xxyz.pdf Xjkl.pdfx
I have a stored procedure that rertrieves data from an sql database and sends out a mail to each receipient who meets the criteria
I am using SQL mail.
I dynamically generate the where clause for my sql query based on criteria taken from other stored procedures and store it in a varchar variable called @sqlquery
When i have the following code to run my cursor
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.
What should i do. i have tested the variable @sqlquery and it is definately not blank. There is no bracket error or anything.
ssn sex dob rel_code 111111111 m 19500403 m 111111111 f 19570908 w 111111111 f 19770804 d 111111111 f 19801203 d 111111111 f 19869712 d 111111111 m 19870907 s 111111111 m 19901211 s
I have to convert the rel_code into a specific manner so the data will look as below in TableB:
ssn sex dob rel_code 111111111 m 19500403 01 111111111 f 19570908 02 111111111 f 19770804 20 111111111 f 19801203 21 111111111 f 19869712 22 111111111 m 19870907 30 111111111 m 19901211 31
Member's rel_code = 01 spouse's rel_code = 02 daughter's rel_code starts from 20 with the oldest and increments by 1. Son's rel_code starts from 30 and increments by 1 from oldest to the youngest.
I know You can write a Sp with cursor and do this, but I would like to know if you can accomplish the same thing by a select or case or something else instead of a cursor.
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 would like to get the results of a cursor into update statement but it fills only the last record of the cursor
this is the cursor:
Code: DECLARE @avg varchar(50) DECLARE @cur_avg CURSOR SET @cur_avg = CURSOR FOR select cast(avg(cast(reply as decimal(12,2))) as decimal(12,2)) from tbl_app_monitoring group by test_name, application_id
this is the update statement:
Code: OPEN @cur_avg FETCH @cur_avg INTO @avg WHILE (@@FETCH_STATUS = 0) BEGIN UPDATE tbl_app_monitoring_archive SET average = @avg FETCH @cur_avg INTO @avg END
is it also possible to do this without the cursor ?
I have a cursor that goes through a table with the names of all the database in my server. So for each fetch, the cursor gets the name of a database and assign it to a variable, @databaseName, and try to do some queries from that database by using the command "USE @databaseName". But "USE" doesn't take the variable @databaseName; it is expecting a database name (i.e. USE master).
Here is my code:
Declare @databaseName varchar(50) Declare c_getDatabaseName CURSOR for SELECT name from tblDatabases OPEN c_getDatabaseName FETCH NEXT from c_getDatabaseName into @databaseName While @@FETCH_STATUS = 0
The following snippet of code returns something like that: string;string1;string2
Up to here fine. I woner how to export such value to ssis variable??? That variable will contain the value needed for the FILEATTACHMENTS property (Send Mail Task)
Thanks a lot,
declare @anex as varchar(500) declare @anex2 as varchar(700) set @anex2 = '' DECLARE anexos CURSOR FOR SELECT [Ruta] + [Fichero] as ANEXO FROM SVC_FICHEROS INNER JOIN SVC_ENVIOS ON SVC_FICHEROS.IDENVIO = SVC_ENVIOS.IDENVIO WHERE ENVIADO = 0 OPEN anexos; FETCH NEXT FROM anexos INTO @anex
WHILE @@FETCH_STATUS = 0 BEGIN IF @anex2 = '' begin set @anex2 = @anex end else begin set @anex2 = @anex2 + ';' + @anex end FETCH NEXT FROM anexos INTO @anex END CLOSE anexos DEALLOCATE anexos
I am hoping someone can help me with using the cursor and fetch functions. I have not used these features in the past and I am now stuck when trying to use IF statements with the fetch function.
I have a temp table populated with the below headers and their associated data.
The headers are as follows: ItemRcvdKey, TranID, TranDate, QtyReceived, UnitCost, ItemKey, WhseKey, ItemID, ShortDesc, WhseID, QtyOnHand, StdCost.
The information contained in this temp table lists every single receipt of goods against all of our inventoried items. The QtyOnHand listed on each record is the total QtyOnHand for that item in that warehouse. What I need the fetch to do is grab the receipt of goods records, starting with the most recent TranDate, and pull them into the new temp table until the QtyOnHand is reached. The QtyonHand it should be comparing too is the one listed on the first fetched record. Once the Sum of the QtyRcvd is equal to or is greater than the QtyOnHand for that item I need the fetch to move on to the next item number and perform the same function.
One thing I need to be clear on is that if there are 3 Receipt Records(TranID) for Item A in Warehouse A, the total QtyOnHand will be listed 3 times. I need to make sure that the Fetch is comparing all the records for Item A in Warehouse A to one instance of the QtyOnHand.
The other aspect is that there will be receipt of goods for the same item in multiple warehouses. So I also need the Fetch to be sure that when it is grabbing records and putting them in the temp table, it makes sure it is matching the ItemID and the WhseID with the record it started with.
The current script I have written is below. If you can offer any help I would greatly appreciate it.
HI AllI have a process that I am trying to accomplish with one statement. Icannot think of any way to do it other than using a cursor.I was wondering if anyone could point me in the right direction.I want to update the Domain in Table A with the Domain in Table Bwhere A.Account = B.Account with the highest rank.----------------------------------Table A--------------------------------------------------------------------Account|Domain--------------------------------------------------------------------Micorsoft|null----------------------------------IBM|null-------------------------------------------------------------TAble B--------------------------------------------------------------------------------------------------------------------------Account|Domain|Rank--------------------------------------------------------------------------------------------------------------------------Micorsoft|microsoft.com|9-------------------------------------------------------------Micorsoft|yahoo.com|2-------------------------------------------------------------Micorsoft|hotmail.com|1Thanks!!!
When I run this update statement, it updates the proper badgenumbers but it only updates them to 1 when I did a count? As the data displays some of the results should be more than 1. Why did this occur?
Using the sys.databases & sys.sysindexes views to display all the columns with a clustered index for all tables and all databases in a given server. So the end result will have 3 columns:
Database name Table name Column name from that table with a clustered index
I have already created the following script which displays all the databases for a given server:
declare @DBname nvarchar(128) declare testCursorForDB cursor for select name from sys.databases with (nolock) where name not in ('master','tempdb','model','msdb') order by name
open testCursorForDB fetch next from testCursorForDB into @DBname
while @@fetch_status = 0 begin print @DBname fetch next from testCursorForDB into @DBname end
close testCursorForDB deallocate testCursorForDB
I also have created the following query which will display all the table and column names which have a clustered index for a given database:
select object_name(i.id) as TableName,
i.name as IndexName from sys.sysindexes as i with (nolock) where i.indid = '1'
However, what I need help/advice on is how do I combine these two together into one working script (either using nested cursors or a better way). In other words, how can I specify which database to use (ie. using the "use database_name") so that my query above will be applied to each database found within the cursor.
