Can anyone give me some guidelines as to when to chose JOINS over returning multiple resultsets in a strored procedure..
For eample, I have two tables, Orders and OrderDetails, which are linked by a primary key field. There can be orders w/o a corresponding record in orderdetails.
1.) I can return all orders and their details using a stored preocedure that has:
SELECT o.order_id as OrderId, o.customername, od.order_id, od.orderdate FROM orders AS o LEFT OUTER JOIN orderdetails AS od ON (o.order_id=od.order_id)
2.) I can do the same by returning two results sets in a different stored procedure:
SELECT order_id, customername FROM orders
SELECT order_id, orderdate FROM orderdetails
I think the client processing time for the second option will be slightly less, because the resultset I need to filter will only be as big as the orederdetails table (it will not include records for orders that have no details). Regardless, I think this would only make for a small performance gain, so if Option 1 is better in Database performace, I would probably go with that.
I assume the method to choose also depends on table size and # of JOINS. Any guidance would be appreciated. Thanks,
Hello, I am in the progress of designing a new section of my database and was thinking of creating a hole new database instead of just creating tables inside the database. My question is can you JOIN multiple tables in an SQL Statement from multiple databases. Ie, In the Management program I have a database called 'Convention' and another one called 'Services', inside the two databases there are many tables. Can I link say tblRegister from Convention to tblUser in Services? Thanks
All,I have a problem regarding SQL Server 2000 SP3,I have SP that calls other SP and it inserts about 30,000 records as atime,in the development environment (MS Windows 2003 Enterprise, 256 RAM,3.0 GHz Intel Processor) takes about 6 seconds to run this SP.But, with the same Software but, 2.6 GHz Intel and 1 GB Ram, it runsvery slow it takes more than 135 Seconds to run,I have read a lot of articles about expanding the SQL Memory and giveit a higher process privilege but, with no use,I don't know where the problem is, do you have any idea about what isthe problem?Thank you in advance,MAG
I have a openquery query like this Select * from openquery([db2],'Select * from tableA')
To only return and process records for a given date range I changed it to be something like this
Select * from openquery([db2],'Select * from tableA') where datefield > '06/06/2001'
While this works fine, my question is that does it copy all the records from the db2 server to the sql server before filtering them. I think it does. The db2 table will have over 1,000,000 records eventually, and the sql server will use records for a given day/date range only.
I have tried many things and even the worst case thing which I was trying to avoid i.e. uninstalled MSDE SP3 and Analysis Services and service packs but the problem is still not solved...
Whenever I open a DTS in design view and double click on the link (the line connecting the two) between the source and destination servers the PC goes to sleep and comes back after a long time and then the same problem occurs when I press on the transformation tab...
I know this may sound weird but that really is the case :o
I have tried many things and even the worst case thing which I was trying to avoid i.e. uninstalled MSDE SP3 and Analysis Services and service packs but the problem is still not solved...
Whenever I open a DTS in design view and double click on the link (the line connecting the two) between the source and destination servers the PC goes to sleep and comes back after a long time and then the same problem occurs when I press on the transformation tab...
I know this may sound weird but that really is the case :eek:
When using Named Pipes the issue is no longer there.
On massive batch inserts we sometimes get a long pause at the end of one insert and before begining the next one. Example:
1000 inserts in the same table and then repeat. This will work fine for 3 or 4 iterations, then pause during the 5th iteration for up to 40 seconds and then simply continue.
When this exact same procedure is done using Named Pipes as the connection method this never happens.
While this is happening neither the server or the workstation is doing anything, 0% CPU, 0% network, it just sits there.
All this using the SQL Native Client 2005 and ADO.
I created two tables one is based on partition structure and one is non-partition structure.
File Groups= Jan,Feb.....Dec Partition Functions='20060101','20060201'......'20061201' I am using RIGHT Range in Partition function. Then I defined partition scheme on partition function.
I have more than 7,00,000 data in my database. I checked filegroups and count rows. It works fine.
But When I check the estimation plan time out for query it is same for both partition table and non partition table.
HelloI have a VB6 application using classic ado (MDAC 2.8) for connectingms sql 2000 server. Application uses a lot of server side cursors. NowI want to switch to ms sql 2005 server but I have noticed very seriousperformance problem. Sql profiler results of execution of followingcommands:declare @p1 intset @p1=180150131declare @p3 intset @p3=1declare @p4 intset @p4=16388declare @p5 intset @p5=22221exec sp_cursoropen @p1 output,N' Select ... from ... where .... orderby ...',@p3 output,@p4 output,@p5 outputselect @p1, @p3, @p4, @p5on sql server 2000:CPU: 234Reads:82515Writes:136Duration:296and on sql server 2005:CPU: 4703Reads:678751Writes:1Duration:4867Both databases are identical, the servers runs on the same machine(Pentium 2,8 Ghz, 2 GB RAM) with only one client connected. On forumsI've read that Microsoft doesn't recommend using server side cursorson sql 2005 but is there any way to increase performance to someacceptable level?thanks in advanceszymon strus
I am new to SQL Server 2000. I am eager to learn what factors/parameters are key for obtaining good retrieval performance of SQL Server 2000 (prompt response to user query).
I recall that someone told me that a recordset with asOpenStatic cursor type has higher speed than that of a recordset with other cursor types.
Is this true or false. Are there really some key parameters for perfomance tuning .
I am with the response time for a simple count on a fulltext search that is too slow.
Even using the most simple query on a good server (64 bit Dual Opteron 4GB Ram with high speed 16 raid disk storage)):
select count(*) from content_books where contains(searchData,'"english"') Takes 4 seconds to count the avg 500.000 resultsI have removed all the joins with real table data so that the query is only inside the fulltext engine..
I would expect this to be down to 4 milli seconds. Isn't it just getting the size of the "english" word result index?
It seems the engine is going through all the results because if a do a more complex search that returns less results the performance is better.
Any clues of how to do this faster? I never read the thousands of records BUT i need to count them...
I have a VB6 application using classic ado (MDAC 2.8) for connecting ms sql 2000 server. Application uses a lot of server side cursors. Now I want to switch to ms sql 2005 server but I have noticed very serious performance problem. Sql profiler results of execution of following commands:
declare @p1 int set @p1=180150131 declare @p3 int set @p3=1 declare @p4 int set @p4=16388 declare @p5 int set @p5=22221 exec sp_cursoropen @p1 output,N' Select ... from ... where .... order by ...',@p3 output,@p4 output,@p5 output select @p1, @p3, @p4, @p5
on sql server 2000:
CPU: 234 Reads: 82515 Writes: 136 Duration: 296
and on sql server 2005:
CPU: 4703 Reads: 678751 Writes: 1 Duration: 4867
Both databases are identical, the servers runs on the same machine (Pentium 2,8 Ghz, 2 GB RAM) with only one client connected. On forums I've read that Microsoft doesn't recommend using server side cursors on sql 2005 but is there any way to increase performance to some acceptable level?
I get a wo_ID and want to query company data. I have the following tables, work_orders (has wo_ID, wo_name and install_id), install_ids (has install_id, comp_id) and customers (comp_id, company_name). The query process goes like this: I get a wo_ID and I need to find the install_id that corresponds with that wo_ID in that same work_orders table. Then take that install_id and find out the comp_id that corresponds with that install_id from the install_ids table. Finally take that customer_id and link it to comp_id in the customers table to find out company data. I need to join it multiple times to get my final data. I have a simple one that works right now with one join and using the install_id, but I don't know how to expand it with multiple joins. Thanks.
I have two tables, one of which is a key table with a subaccount number and a set of attributes that define that subaccount. I am trying to join this key table with the table with all the attributes and come up with one table of subaccounts. The Subaccounts should only lookup the attributes associated with them, not all of the attributes, so I put OR [attribute] IS NULL in the WHERE clause so it only matched on the appropriate columns. This worked great in an initial test with two attributes but when I put all 9 attributes in it crashed with this message "Msg 415, Level 16, State 1 The current query would require an index on a work table to be built with 15 keys. The maximum allowable number of keys is 16" like this CREATE VIEW subaccounts (Subacct_no, balance) AS SELECT (s.Account_No + "." + r.Subacct_Ext, S.Balance) FROM Acct_Rcd r, Subacct_Key s WHERE (s.attr1 = r.attr1 OR s.attr1 IS NULL) AND (s.attr2 = r.attr2 OR s.attr2 IS NULL)
I'm trying to eliminate all records that do not have one of two conditions. I'm using INNER JOIN on a derived "table", not a table in my database. The code below summarizes what I'm trying to do. Please note that this is an extremely simplified query.
---------------------------
SELECT * FROM jobs INNER JOIN ( SELECT contact_id FROM contacts WHERE deleted = 0 )AS ValidContacts ON (jobs.owner = ValidContacts.contact_id OR jobs.assignee = ValidContacts.contact_id)
---------------------------
This works fine when the the "SELECT contact_id FROM contacts WHERE deleted = 0" part returns a small number of records, however when that part returns a very large number of records, the query hangs and never completes. If I remove one of the conditions for the JOIN, it works fine, but I need both. Why doesn't this work?
Another possible solution is if I were to use "WHERE/IN" like this:
---------------------------
SELECT * FROM jobs WHERE owner IN (SELECT contact_id FROM contacts WHERE deleted = 0) OR assignee IN (SELECT contact_id FROM contacts WHERE deleted = 0)
---------------------------
This would work fine, but I don't want to have to run the "SELECT contact_id FROM contacts WHERE deleted = 0" part twice (since in my real code, it is much more complicated and performance is a big issue". Any help would be greatly appreceated.
select scheme.opheadm.order_no, scheme.porecpm.order_no, delivery_no, invoice_no, scheme.opheadm.customer, qty_received from scheme.opheadm join scheme.porecpm on (ltrim(rtrim(scheme.porecpm.commnt)) like (ltrim(rtrim(scheme.opheadm.order_no)) + '/%')) where effective_date between '2011-10-01 00:00:00.000' and '2011-10-08 00:00:00.000'
It gives me the 5 rows that I need to work with, one column is customer (which is giving me customer code) that I want to replace with customer name from another table
So I tried:
select scheme.opheadm.order_no, scheme.porecpm.order_no, delivery_no, invoice_no, scheme.jcmastm.name, qty_received from scheme.opheadm join scheme.porecpm on (ltrim(rtrim(scheme.porecpm.commnt)) like (ltrim(rtrim(scheme.opheadm.order_no)) + '/%')) join scheme.jcmastm on scheme.opheadm.customer = scheme.opheadm.customer here effective_date between '2011-10-01 00:00:00.000' and '2011-10-08 00:00:00.000'
this works with the same 5 rows that i need but loops them through every customer from the table scheme.jcmastm giving me a total of 960 rows not just the 5 that i want to work with. why this is looping?
The code is the name of the test and the result is just that. Not all patients will have the same set of results. What I'd now like to do is pull out a CSV file of all results from 2013 including where the result is null. The format I am looking for is along the following lines:
Sex, Age, AKIN2, AKIN7, RIFLE,
The AKIN2, AKIN7 and RIFLE are the codes in the result table. I have tried OUTER JOINS but it seems to only pull out those records that exist (example below). I need to specify the result codes I am interested in otherwise the output could be enormous but this then does not pull out null values (a NULL value is an important as an actual value).
SELECT Samples.Patient_ID AS ID, Samples.LabNo As LabNo, Patients.Sex As Sex, DATEDIFF(year, Patients.DoB, Samples.Sampled) AS Age, Samples.Source as Source,
Ok, this is what I am trying to do:, 1) I am trying to get the number of employees that has completed all their online training within 10 days of hire 2) All the employees that are has no exception(no pre-service training) and has completed their checklist within 10 days 3) all the exception(pre-service) employees that has completed their training within 70 days.
I have these tables, hipaa2006, hipaa101, hipaa201_inputs, domesticviolence, securityawareness, securityawareness2006, civilrights_input, and people_first_data. People_first_data contains all the employees we have in our database, it has empl_pfid col, but does not have last_modified col which all the other tables has.
I have this queries:
1) select distinct(count(empl_pfid)) from people_first_data left outer join tbl_domesticviolence on people_first_data.empl_pfid = tbl_domesticviolence.employee_pfid left outer join tbl_hipaa101 on people_first_data.empl_pfid=tbl_hipaa101.employee_pfid left outer join tbl_hipaa201_input on people_first_data.empl_pfid= tbl_hipaa201_input.employee_pfid left outer join tbl_hipaa2006 on people_first_data.empl_pfid=tbl_hipaa2006.employee_pfid left outer join tbl_securityawareness on people_first_data.empl_pfid=tbl_securityawareness.employee_pfid left outer join tbl_securityawareness2006 on people_first_data.empl_pfid= tbl_securityawareness2006.employee_pfid where people_first_data.empl_pfid = '639846' and tbl_domesticviolence.last_modified is not null and tbl_hipaa101.last_modified is not null and tbl_hipaa201_input.last_modified is not null and tbl_hipaa2006.last_modified is not null and tbl_securityawareness.last_modified is not null and tbl_securityawareness2006.last_modified is not null
2) ( I tried union, but i only wanted one number) select count(last_modified) as date1 from tbl_hipaa2006 union select count(last_modified) as date2 from tbl_hipaa101
hi i user this join and i have the answer like this"
select u.userid, u.user_name, u.password, c.code_description as role_code, convert(varchar, u.expiry_date,101) as expiry_date, u.created_date, u.active from [usermaster] u inner join [codeMaster] c on 'SP'=c.code where u.userid = '2'
select u.userid, u.user_name, u.password, c.code_description as role_code, convert(varchar, u.expiry_date,101) as expiry_date, u.created_date, u.active, v.user_date from [usermaster] u inner join [codeMaster] c inner join [HRUser_developerlog] v on 'SP'=c.code or u.userid=v.inserted_id and v.operation='delete' where u.userid = '2'
but i am getting error.can any onre please help me and please give me query please
I have two tables, let's say "Main" and "Dictionary".
The Main table has several fields that point to records in the same dictionary table. Because of the multiple joins I couldn't get any results if I use an expression like:
SELECT Main.ID, Dictionary.Text AS Data1, Dictionary.Text AS Data2
FROM Main, Dictionary
WHERE Main.Data1 = Dictionary.ID AND Main.Data2 = Dictionary.ID
What kind of join expression should I use? I have to generate this expression programmatically, so it's quite important to keep it as simple as possible!
An EMPLOYEE will always have at least 1 SKILL but each SKILL may or may not have any SKILLOPTIONS. I do an INNER JOIN:
EMPLOYEE->SKILL->SKILLOPTIONS but I only get a record if there is actually a SKILLOPTION. I want a record with EMPLOYEE and SKILL even if there are no SKILLOPTIONS. In Oracle it is the (+) symbol in the WHERE statement in conjunction with the JOIN. Am new to this so I'm sure the answer is simple.
I have a left Join problem - Appreciate any suggestions This is the error message C:InetpubwwwrootFTDecAdminFinishedAdminBeta2.aspx(47) : error BC30201: Expression expected. "tered] FROM [Colleges] "& _ ~ C:InetpubwwwrootFTDecAdminFinishedAdminBeta2.aspx(49) : error BC30035: Syntax error. " Left Join [PIDO] ON ([Colleges].[CollegeID] = ([PIDO].[CollegeID]) "& _ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ C:InetpubwwwrootFTDecAdminFinishedAdminBeta2.aspx(53) : error BC30451: Name 'queryString' is not declared. dbCommand.CommandText = queryString ~~~~~~~~~~~This is the Code >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> FROM [Colleges] "& _ '" Left Join [PIDO] ON ([Colleges].[CollegeID] = ([PIDO].[CollegeID]) "& _ " left join [GroupPA] ON ([Colleges].[CollegeID] = [GroupPA].[CollegeID])ORDER BY "& sortBy >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
I have a table with a large number of records that I need to delete, before attempt to perform the delete I also archived the records to another table.
So I need to delete all of these selected records stored in the archive table from the main table. I can now reference all the records that qualify for the delete in the main table by performing a join on the archive table like so:
select * from my_main_table a join my_archive_table b on a.distinct_id=b.distinct_id and a.surrogate_key=b.surrogate_key and a.identifier=b.indentifier
So all the records check out to be the ones I'd like to perform a delete on but I just can't figure out how to perform a delete of the records with little or no change to the existing query.
Obviously something like this won't work:
delete from my_main_table a join my_archive_table b on a.distinct_id=b.distinct_id and a.surrogate_key=b.surrogate_key and a.identifier=b.indentifier
Though it would be nice if it did.:D
So my question is how would I use the existing query with some modification to delete only the records that this query returns. I've tried selection of records in the main table based on the existing records in the archive table but it can return a higher number of records than what I know is expected. I actually need the join specified to be in place to do it.
I have three tables, Users, DocType and Docs. In the DocType table there are multiple entries for allowed document types, the descriptions and other pertinent data. In the Docs table, there are all manner of documents. In the User table are the users.
The DocType and Docs tables are relational. DocType.ID = Docs.tID The Users and Docs tables are relational. Users.ID = Docs.uID
Every user is allowed to have exactly one document of each type. Therefore if there are 10 document types in the DocType table, there may be as many as 10 matching documents in the Docs table.
What I need is a single record for each user returning a boolean for each document type, whether or not there is a matching record in the Docs table.
For example, there are 5 document types defined in the DocType table (types 1 - 5), so the DocType table has 5 rows. In the Docs table, there are 23 rows, and in the User table there are 10 rows. Given that each user may have only one of each DocType, there could be a maximum of 50 rows in the Docs table, but there are 23, meaning that on the average each user is missing one document.Now the challenge is to return a table of all the users (10 rows) with a boolean value for each of the rows in DocType (as columns) based on whether there is a value in the Docs table that matches both the DocType and User.
I have 3 tables , Customer , Sales Cost Charge and Sales Price , i have join the customer table to the sales price table with a left outer join into a new table.
i now need to join the data in the new table to sales cost charge. However please note that there is data that is in the sales price table that is not in the sales cost charge table and there is data in the sales cost charge table that is not in the sales price table ,but i need to get all the data. e.g. if on our application it shows 15 records , the sales price table will maybe have 7 records and the sales cost charge table will have 8 which makes it 15 records
I am struggling to match the records , i have also tried a left outer join to the sales cost charge table however i only get the 7 records which is in the sales price table. see code below
I have two tables a and b, where I want to add columns from b to a with a criteria. The columns will be added by month criteria. There is a column in b table called stat_month which ranges from 1 (Jan) to 12 (Dec). I want to keep all the records in a, and join columns from b for each month. I do not want to loose any row from a if there is no data for that row in b.
I do not know how to have the multiple joins for 12 different months and what join I have to use. I used left join but still I am loosing not all but few rows in a, I would also like to know how in one script I can columns separately from stat_mont =’01’ to stat_month =’12’
/****** Script for SelectTopNRows command from SSMS ******/ SELECT a.[naics] ,a.[ust_code] ,a.[port] ,a.[all_qty_1_yr] ,a.[all_qty_2_yr]
[Code] ....
Output should have all columns from a and join columns from b when the months = '01' (for Jan) , '02' (for FEB), ...'12' (for Dec): Output table should be something like
* columns from a AND JAN_Cum_qty_1_mo JAN_Cum_qty_2_mo JAN_Cum_all_val_mo JAN_Cum_air_val_mo JAN_Cum_air_wgt_mo JAN_Cum_ves_val_mo FEB_Cum_qty_1_mo FEB_Cum_qty_2_mo FEB_Cum_all_val_mo FEB_Cum_air_val_mo FEB_Cum_air_wgt_mo FEB_Cum_ves_val_mo .....DEC_Cum_qty_1_mo DEC_Cum_qty_2_mo DEC_Cum_all_val_mo DEC_Cum_air_val_mo DEC_Cum_air_wgt_mo DEC_Cum_ves_val_mo (FROM TABLE b)
I am trying to build a report that access data from multiple cubes. Is it possible to join multiple cubes based on their shared dimensions? Or is it possible for report to display data from multiple cubes properly aligned based on the dimension.
Environment: SQL Server Analysis Services 2005 and Reporting Services 2005
Example: We have multiple cubes with “Year� as a shared dimension and each one has different Rate info. The cubes have other set of shared dimensions which I am planning to set it up as a parameter. I would like to display the report as Year Rate1 Rate2 Rate3…
I want to join 2 tables by a unique ID field, but the ID field also hasmultiple NULLS which I do not want to ignore and I fear they will causeduplication.Using TableA and TableB below i will demonstrate the problem.TableATableA.ID Field1 Field21 Paul 1Null John 12 John 1TableBTableB.ID Field3 Field41 25 1Null 32 1Null 23 12 26 1The Table I want isTableA.ID TableB.ID Field1 Field2 Field3 Field41 1 Paul 1 25 12 2 John 1 26 1Null Null John 1 Null NullNull Null Null Null 32 1Null Null Null Null 26 1I think a select distcinct statement with a full outer join may do whatI want, but I'm not certain so want to check.Regards,Ciarán
Is there a way to create one field from multiple records using sql.For exampleTable 1John 18Peter 18David 18Now I want an sql query that when executed will return a field thatlooks like thisQuery1John Peter DavidSo basically it will return one record with all the name in one field
