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
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'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 ':'.
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?
Help please,Have a situation when converting from Oracle SP's to SQL SP's. The oldoracle cursor was roughly as followsCURSOR cur_rsStock ISselect*from(select StockRowId, CategoryIdfromSTOCKDISPOSABLEwhereSTOCKDEFID=numDefIdORDER BYSTOCKROWID)whereROWNUM <= numQuantity;The closest I can get in MS SQL is as follows :declare cur_rsStockCURSOR forselect top @numQuantityStockRowId, CategoryIdfromSTOCKDISPOSABLEwhereSTOCKDEFID=numDefIdORDER BYSTOCKROWIDBut, SQL doesn't allow variables next to top. I know I can assign the wholeselect statement to a string and use exec to exec the string to get arecordset but how can I point a cursor to receive its output?i.e.set @strSQl = select top ' + @numQuantity + ' StockRowId, CategoryId.......exec @strSQLbut how do I dodeclare cur_rsStockset cur_rsStock = ( exec @strSQL)Flapper
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 !
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?
buddies,situation: a processing must take place on every row of a table, andoutput results to another table, that can't be done via an insertinto..select query (let's assume that it's not possible for now).There're 2 solutions I have in mind:1) open a cursor and cycle through each row (The table can have up to1M rows)2) create a clustered index (i.e on an identity column) then have aloop like:declare @i int, @rows int,@col1 varchar(20), @col2 varchar(20),... @coln varchar(20),@outval1 varchar(20),... -- output valuesselect @i=1, @rows = max(xid) from tblname -- xid is clustered indexedwhile (@i<=@rows)beginselect @col1 = col1, @col2 = col2,...@coln = colnfrom tblnamewhere xid = i-- do the processing on the variables-- then insert results to another tableset @i = @i+1endI'd like to know your ideas of which one would be more efficient. Anyother solutions are much appreciatedthanks,Tamy
In my previous post I asked how to do the bottom question. I got a response to use a cursor, now I made an attempt to use a cursor but I still get the same response. Any help will be greatly appreciated.
--CURRENT OUTPUT--
empID Rank Skills ------- ---- -------------------------------------------------- 2924 1 Create Documents 2924 2 Mail Merge 2924 3 Create Header and footer 2924 3 Create Spreadsheet 2924 3 Joining Tables in a Query
--DESIRED OUTPUT--
empID Rank Skills ------ ---- ------------ 2924 1 Create Documents 2924 2 Mail Merge 2924 3 Create Header and footer, Joining Tables in a Query, Create Spreadsheet
--Here is the cursor script.--
Declare @skills varchar(255),@skills2 varchar(255),@message varchar(255),@empID varchar(255), @Rank varchar(255) DECLARE emp_skills CURSOR For select C.empID, B.Rank,B.Text1 as Skills from tbl_survey_rank B , tbl_survey_valueID C where PATINDEX ( '%'+ltrim(rtrim(B.valueID))+'%', C.text1) >0 and C.empID = '2924'and (B.Rank ='1'or B.Rank ='2' or B.Rank ='3') or PATINDEX ( '%'+ltrim(rtrim(B.valueID))+'%', C.text1) >0 and B.Rank ='3'and C.empID = '2924' or PATINDEX ( '%'+ltrim(rtrim(B.valueID))+'%', C.text1) >0 and B.Rank ='3'and C.empID = '2924' or PATINDEX ( '%'+ltrim(rtrim(B.valueID))+'%', C.text1) >0 and B.Rank ='3'and C.empID = '2924' or PATINDEX ( '%'+ltrim(rtrim(B.valueID))+'%', C.text1) >0 and B.Rank ='3'and C.empID = '2924'
DECLARE emp_skills2 CURSOR For select B.Text1 as Skills from tbl_survey_rank B , tbl_survey_valueID C where PATINDEX ( '%'+ltrim(rtrim(B.valueID))+'%', C.text1) >0 and C.empID = '2924'and (B.Rank ='1'or B.Rank ='2' or B.Rank ='3') or PATINDEX ( '%'+ltrim(rtrim(B.valueID))+'%', C.text1) >0 and B.Rank ='3'and C.empID = '2924' or PATINDEX ( '%'+ltrim(rtrim(B.valueID))+'%', C.text1) >0 and B.Rank ='3'and C.empID = '2924' or PATINDEX ( '%'+ltrim(rtrim(B.valueID))+'%', C.text1) >0 and B.Rank ='3'and C.empID = '2924' or PATINDEX ( '%'+ltrim(rtrim(B.valueID))+'%', C.text1) >0 and B.Rank ='3'and C.empID = '2924' OPEN emp_skills OPEN emp_skills2 FETCH NEXT FROM emp_skills into @empID, @Rank, @skills FETCH NEXT FROM emp_skills2 into @skills2 WHILE @@FETCH_STATUS = 0 BEGIN SELECT @message = @skills2 FETCH NEXT FROM emp_skills2 into @skills2 Print @empID + ' '+ @Rank + ' ' + @message
FETCH NEXT FROM emp_skills into @empID, @Rank, @skills
End CLOSE emp_skills DEALLOCATE emp_skills CLOSE emp_skills2 DEALLOCATE emp_skills2
--Previous Post--
Another question for all you SQL experts, I have a lot of them. I am trying to select from a table wher some conditions need to be met based on an employee ID. What I am doing is when the rank is a 1,2, or 3 I pick up the text description of that rank. Can I make it so that I get the ID only once and all the text descriptions are on the same line. Here is the sql script along with my current output and my desired output.
--SQL SCRIPT__
select C.empID, B.Rank,B.Text1 as Skills from tbl_survey_rank B , tbl_survey_valueID C where PATINDEX ( '%'+ltrim(rtrim(B.valueID))+'%', C.text1) >0 and C.empID = '2924'and (B.Rank ='1'or B.Rank ='2' or B.Rank ='3')
--CURRENT OUTPUT--
empID Rank Skills ------- ---- -------------------------------------------------- 2924 1 Create Documents 2924 2 Mail Merge 2924 3 Create Header and footer 2924 3 Create Spreadsheet 2924 3 Joining Tables in a Query
--DESIRED OUTPUT--
empID Rank Skills ------ ---- ------------ 2924 1 Create Documents 2924 2 Mail Merge 2924 3 Create Header and footer, Joining Tables in a Query, Create Spreadsheet
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.
I need to dynamically construct the field order of a cursor based on fixed labels from another table, but when I put that resulting query I receive the error:
Server: Msg 16924, Level 16, State 1, Line 78 Cursorfetch: The number of variables declared in the INTO list must match that of selected columns.
I have 6 fields defined in the cursor select, and 6 parameters in the fetch. The results of running the @sql portion returns valid data. Should this be possible to define a parameter containing the select clause of the cursor?
select colnum, coldesc, colname into #ae_defs from ae_adefs select @Sql = (select colname from #ae_defs where coldesc = 'PATIENT NAME') + ', ' + (select colname from #ae_defs where coldesc = 'PATIENT NUMBER') + ', ' + (select colname from #ae_defs where coldesc = 'ACCOUNT NUMBER') + ', ' + (select colname from #ae_defs where coldesc = 'VISIT DATE') + ', ' + (select colname from #ae_defs where coldesc = 'VISIT TYPE') + ', DocID from ae_dtl1'
DECLARE myCursor CURSOR FOR Select @SQL
OPEN myCursor print @@Cursor_rows FETCH NEXT FROM myCursor into @var1, @var2, @var3, @var4, @var5, @DocID
I have problems to place my variable into the select statement.
DECLARE @DB_NAME varchar(64) DECLARE MR_ReqPro_DB_cursor CURSOR FOR select name from dbo.sysdatabases where name like '%MR_req%' OPEN MR_ReqPro_DB_cursor FETCH NEXT FROM MR_ReqPro_DB_cursor INTO @DB_NAME
WHILE @@FETCH_STATUS = 0 BEGIN print @DB_NAME; --works fine
Select NAME, FILEDIRECTORY FROM @DB_NAME.MR_ReqPro.RQDOCUMENTS WHERE (FILEDIRECTORY LIKE '%\%');
FETCH NEXT FROM MR_ReqPro_DB_cursor INTO @DB_NAME END CLOSE MR_ReqPro_DB_cursor DEALLOCATE MR_ReqPro_DB_cursor
GO
How could i use a variable like @DB_Name in my select ?
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????
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.
an example for the pb 1)First i have created a dynamic cursor :
DECLARE authors_cursor CURSOR DYNAMIC FOR Select DISTINCT LOCATION_EN AS "0Location" from am_location WHERE LOCATION_ID = 7 OPEN authors_cursor FETCH first FROM authors_cursor
2)The result for this cursor is for expamle 'USA'.
3) If now i do an update on that location with a new value 'USA1'
update am_location set location_en = 'USA1' WHERE LOCATION_ID = 7
4)now if i fetch the cursor , i''ll get the old value (USA) not (USA1).
If i remove DISTINCT from the cursor declaration , the process works fine .
the cursor at the bottom  iterates only to print the number of rows.The problem is in the select. This takes 30 seconds to iterate through 1242 records.But if I add a TOP 1000000 or whatever number to the select, the same iteration takes less than a 1 second.I've tested each query without cursor, and  both have the same cost and performance. (Not exactly the same plan)Note that I got the same performance improvement declaring the cursor as STATIC.Why the top is affecting the cursor iteration so much?
An example for my pb 1) Created a dynamic cursor : DECLARE cursor_teste CURSOR DYNAMIC FOR Select DISTINCT name from table WHERE ID = 1 OPEN cursor_teste FETCH first FROM cursor_teste 2)The result for this cursor is for example 'teste'. 3) If now i do an update on that name with a new value 'teste1' than if i fetch the cursor , i''ll get the old value (teste) .
any idea how to make a select distinct result in a dynamic Cursor?
col1 col2 col3 col4 36930.60 145 N . 00 17618.43 190 N . 00 6259.20 115 N .00 8175.45 19 N .00 18022.54 212 N .00 111.07 212 B .00 13393.05 67 N .00 In above 4 col if col3 value is B then cursor has to fectch appropriate value from col4. if col3 value is N then cursor has to fectch appropriate value from col1. here col2 values are unique.
I have a table when user add new sales or puchase will be added to this table ITEM_TXNS. The above date is part of the table for a ProductID . (The field is removed here) In order to calculate the balance amount using moving average, I must calculated the cost_out_amt first on the fly. When user add new sales I also need to determine the cost/unit for a product id using moving average. The problem is I can not just use sum, because i need to determine cost_out_amt for each sales first which will be calculated on the fly. The reason i dont store the cost_out_amt (instead calculate on the fly) because User could Edit the previous sales/purchase txn or Insert new sales for a previous date. Example THe record with ID 9. By Adding this txn with ID 9, would cause all the cost_out_amt will be incorrect (Using moving Average) if i store the cost_amout_out on entrying txn and need to be recalculated. Instead I just want to calculate on the fly and able to determine the cost avr for a specific point of time. Should I just use Cursor and loop all the record and calculate the cost or maybe I can just use on Select Statement?
