We are in the process of replacing our primary production server. In the process of determining how SQL server is going to be structured, it has been suggested that I place all current and new indexes on a separate file group. These filegroups would then reside on a separate shelf on the server. What are the pros and cons of doing this?
View 2 RepliesMy company is thinking about moving to a product that uses Microsoft SQL Server and I have been asked to find out what are the Pros and Cons of the product, if any.
Any feedback is appreciated.
Thank You
Pam
Anyone know where I could find some good articles about pros and cons of upgrading SQL 7 to SQL 2K?
Our boss suddenly got this bug up his rear that we need to upgrade. :(
Probably because we are to a point where everything is running smoothly, and he needs to throw a monkey wrench in it.
We are a very small shop, and are not stressing SQL 7 in the least. I am interested to read some articles about SQL 2K, because right now, I can't see any possible reason an upgrade would be worth doing.
Thanks.
I have a requirement where I need to perform a query for positioninformation. But for some types of entries, I need to "expand" the rowto include additional position rows. Let me explain with an example:An index is a security that is made up of components where eachcomponent has a "weight" or a number of shares. So if I have 1 share ofthe index, I have X shares of each component.AAPL is an Equity, CSCO is an Equity, SPY is an Index. Lets say thatSPY has one component, AAPL, with shares being 10. (1 share of SPY = 10shares of AAPL).So, I do some trading and I end up with positions as follows:+10 AAPL-5 CSCO+2 SPYThe query I need returns:+10 AAPL-5 CSCO+2 SPY+20 AAPL (from 2 SPY * 10 shares)which becomes (after grouping):+30 AAPL-5 CSCO+2 SPY-----------------------------------------Based on that criteria and the following schema (and sample data):-- Drop tablesDROP TABLE [SecurityMaster]DROP TABLE [Position]DROP TABLE [IndexComponent]-- Create tablesCREATE TABLE [SecurityMaster] ([Symbol] VARCHAR(10), [SecurityType] VARCHAR(10))CREATE TABLE [Position] ([Account] VARCHAR(10), [Symbol] VARCHAR(10), [Position] INT)CREATE TABLE [IndexComponent] ([IndexSymbol] VARCHAR(10), [ComponentSymbol] VARCHAR(10), [Shares] INT)--Populate tablesINSERT INTO [SecurityMaster] VALUES ('AAPL', 'Equity')INSERT INTO [SecurityMaster] VALUES ('MSFT', 'Equity')INSERT INTO [SecurityMaster] VALUES ('MNTAM', 'Option')INSERT INTO [SecurityMaster] VALUES ('CSCO', 'Equity')INSERT INTO [SecurityMaster] VALUES ('SPY', 'Index')INSERT INTO [Position] VALUES ('001', 'AAPL', 10)INSERT INTO [Position] VALUES ('001', 'MSFT', -5)INSERT INTO [Position] VALUES ('001', 'CSCO', 10)INSERT INTO [Position] VALUES ('001', 'SPY', 15)INSERT INTO [Position] VALUES ('001', 'QQQQ', 21)INSERT INTO [Position] VALUES ('002', 'MNTAM', 10)INSERT INTO [Position] VALUES ('002', 'APPL', 20)INSERT INTO [Position] VALUES ('003', 'SPY', -2)INSERT INTO [IndexComponent] VALUES ('SPY', 'AAPL', 25)INSERT INTO [IndexComponent] VALUES ('SPY', 'CSCO', 50)INSERT INTO [IndexComponent] VALUES ('QQQQ', 'AAPL', 33)-- *****************************-- Based on the rules:-- 1) Index positions appear like other positions (account /symbol) pair, but-- its components show up as new rows of account (of index),symbol (equal--to component symbol), position (equal to shares * index position)-- 2) One row for each account / symbol pair (GROUP BY account andsymbol, SUM position)-- Expected output (without grouping) (sorted by account / symbol)-- 001 AAPL 10-- 001 AAPL 375 (component shares * index position) (25* 15) (SPY)-- 001 AAPL 693 (component shares * index position) (33* 21) (QQQQ)-- 001 CSCO 10-- 001 CSCO 750 (component shares * index position) (50* 15) (SPY)-- 001 MSFT -5-- 001 QQQQ 21-- 001 SPY 15-- 002 AAPL 20-- 002 MNTAM 10-- 003 AAPL -50 (component shares * index position) (25* -2) (SPY)-- 003 CSCO -100 (component shares * index position) (50* -2) (SPY)-- 003 SPY -2-- Expected output (with grouping account / symbol) (sorted by account/ symbol)-- 001 AAPL 1078-- 001 CSCO 760-- 001 MSFT -5-- 001 QQQQ 21-- 001 SPY 15-- 002 AAPL 20-- 002 MNTAM 10-- 003 AAPL -50-- 003 CSCO -100-- 003 SPY -2---------------------------------------------Is a UNION the best way to perform the query. What are the pros andcons? What, if any, is a better way?SELECT[Account], [Symbol], SUM([Position]) AS [Position]FROM(SELECT[Account], [Symbol] , [Position]FROM[Position]UNION ALLSELECTP.[Account] , IC.[ComponentSymbol] AS [Symbol] , (P.[Position] *IC.[Shares]) AS [Position]FROM[IndexComponent] ICJOIN[Position] PONP.[Symbol] = IC.[IndexSymbol]) DGROUP BY[Account], [Symbol]ORDER BY[Account], [Symbol]
View 5 Replies View RelatedHi alli am building a SQL 2000 database that it is proving a littlechallenging, i have companies with multiple addresses, phone numbers,owning mine sites etc and also joint ventures so maybe you get thepicture with a few design issues that i ma encounteringMy queriy is about a primary key identity, and which one to use withrespect to either the identity data type or the unique identifier ,I am aessentiall building an address table to hold all multipleaddresses as well as phone numbers etc, so my desire to have a uniqueidentity for each record is very important.My view is i will run in to violation errors by just using the tableidentity data type, i could i suppose use composit primary keys butthat may have a performance impact, although thiis will not be a hightransaction database.Does anyone know about performance issues regarding each identitysolution, by using a generated 16 bit identifier there are going to behuge numbers for the DB to verify. or am i worried about nothing?any views greatly appreciatedregardsGreg
View 17 Replies View Relatedcan anyone explain the Pros and Cons of Stored Procedures ??
thanks
Im about to start converting code to Stored Procedures for all my reports in Reporting Services. I was wondering what the pros and cons of this may be.
View 17 Replies View RelatedThanks for the help on the previous thread.
It seems to me that either by accident or design, SQL Server tends to steer you away from backing up directly over the network.
Are there reasons for not doing this because you obviously don't want to leave your backups on a local drive in case the drive fails?
Some possibilties that I can think of are:-
1. Local drives have faster access times and SQL backups can get quite large. I did a quick test and found that a netwrok backup takes 2 to 3 times longer than it does on a local drive.
2. Backing up on the netwrok could hog too much bandwidth. I haven't tested this and would be surprised it it's true.
3. There could be some reason that you don't want the Server and Agent services running under a domain account but want to leave them on the Local System account. I am not aware of any such reasons by the way.
4. Local drives persumably have a slightly higher availability than network drives. If the server is running, the drive should be available.
Like in the subject: What are the cons and pros of using nvarchar(max) versus ntext?
Does it have something to do with having to enable full text search perhaps in the latter case?
I'm just wondering what any pros and cons of using multivalue columns in a database are.
I'm designing a database which will have a column for FABRIC_TYPES_AVAILABLE for a certain FURNITURE_ITEM. Each FURNITURE_ITEM can have multiple FABRIC_TYPES_AVAILABLE of course. So I was just going to store a 2 or 3 digit number of the FABRIC_TYPES_AVAILABLE in that row. So I would have something like....34,24,453,32,23,45,67,65,43,21,21,45.
Anyway....thanks in advance for any information. Links I could read would be great too...b/c I did do a bit of searching, but didnt find much.
I have a main database...for this large Web site...and Im wondering
what would be the PROS and CONS of using another database (located on
the same, or on another SQL Server). Im just thinking this would be
good incase we ever needed to take some load off one of the servers.
Also, we will be integrating Community Server into this Web site. Of
course you know CS adds its own database objects which crowd up our
main database objects.
We were thinking of giving CS its own database also; bad practice, or....it doesn't matter much?
Thank you
I was wanting to know. I am making a site that might be come big. And me and this dude are considering pickering abotu GUID. I don't want to use them but he does. And I was wondering what should we do? I know nothing about guids
View 1 Replies View Relatedvinod writes "Q1>Should I apply filter in sequence(based on primarykey,not null,comparision,between clause) ?
-How to apply filter in correct format,and SQL server internally execute it.
Q2>Should I use 'is not Null' to be put at the last?
Q3>Should I use 'between clause' rather than relation operator i.e(empid>10 and empid<200)
Q4>Does filters of sequence has any impact on the query execution process
table1[pkey1,col1,col2,col3] -->pkey is pkey1
table2[pkey2,pkey1,col11,col12,col13]--->pkey is pkey2, and pkey1 is foreign key
CaseI->select table2.pkey2,table1.col1 ,table2.col12
from table1 inner join table2
on table1.pkey1=table2.pkey1
where (table1.col3>100 and table1.col3<300 ) and table2.pkey1=2020 and table2.col13 is not null
CaseII->select table2.pkey2,table1.col1 ,table2.col12
from table1 inner join table2
on table1.pkey1=table2.pkey1
where (table1.col3 between 101 and 299 ) and pkey1=2020 and table2.col13 is not null"
Are there any vices to using default constraints on all columns in your table.
For example an Int that defaults to 0
or a char or varchar that defaults to ''
I know that 0 and Null are not the same thing. But if your programs don't have the concept of NULL then you have to convert the NULL to zero.
So, DEFAULT CONSTRAINTS on every column. Is it good or Bad?
Thanks
Darin Clark
Can someone provide information or a link to information regarding the pros and cons of saving files directly into a SQL 2005 database?
I'm actually for saving files to a database (cleaner implementation then just saving the location then having to get the file, etc), but my project manager is not convinced so I need to make an argument for (or against depending on what I actually find out) using varbinary data type.
Thanks.
Hi All!We are doing new development for SQL Server 2000 and also moving fromSQL 7.0 to SQL Server 2000.What are cons and pros for using IDENTITY property as PK in SQL SERVER2000?Please, share your experience in using IDENTITY as PK .Does SCOPE_IDENTITY makes life easier in SQL 2000?Is there issues with DENTITY property when moving DB from one serverto another? (the same version of SQL Server)Thank you in advance,Andy
View 49 Replies View Relatedhi all,
I was wondering if anyone knows of any pros/cons on storing SSIS (2005) packages within SQL Server 2005 SP2.
We're contemplating the migration/storage of a large number of packages, a minority of which designed in dts (SQLServer 2000) and using third party activx components.
thanks much for any feedback,
Cosmin
I am using transaction replication between a transaction and reporting database server. When I use a snapshot to initialize my subscribers, I currently get a lot of deadlocks during the snapshot creation. I am considering using a database backup instead. Can anyone tells me how to reduce the table locks that I am getting during snapshot creation or advice on using database backups?
We have a large Datawarehouse and the size is 50TB.. The tables are placed in filegroups based on the schema like fact, dimensions, raw data each sit on seperate filegroups. I am thinking will it make sense to seperate the large facts which are having billions of rows so that they reside on filegroups on their own..
View 9 Replies View RelatedSomething strange.I have a database(SQL2000) with two file group(on seperate physicaldrives).One is meant for table data[PRIMARY] and one for indexes [INDEX].So i create a table on the [PRIMARY] file group, and fill indata.Next I build a clustered index on the table, on the [INDEX] filegroup.Once the index is built, the database now indicates that the filegroupfor the table [INDEX]! and not [PRIMARY] as i originally set it up for!My question it then: Has the table been moved or is this somehow anerror in SQL server?I would really appreciate any thought anyone might have on this?
View 4 Replies View RelatedI've read that if particular tables are frequently queried together through a join then these tables should be placed on different devices on different physical disks.
What does this mean exactly and how would you configure this?
Is this a common practice in high-performance real-world environments (or should it be)?
Anyone know how to place additional indexes on system tables?
View 1 Replies View RelatedI'll be running SQL v7.0 with raid level 0. The DB will have approx. 250 tables and 1200 indexes.
Can you have the indexes located on a physically separate drive with SQL v7.0 and would this be the best practice?
We are running SQL Server 2014 Enterprise Edition (64-Bit) on Windows 2012 R2 Standard (64-Bit).
1. When to create indexes, before or after data is added? Please address Clustered and Non-Clustered Indexes.
2. To move indexes to it's own filegroup, is it best to create the NON-Clustered Indexes on the separate filegroup with code similar to the example below?
CREATE NONCLUSTERED INDEX IX_Employee_OrganizationLevel_OrganizationNode
ON HumanResources.Employee (OrganizationLevel, OrganizationNode)
WITH (DROP_EXISTING = ON)
ON TransactionsFG1;
GO
I have read the following links that states that if you create the Clustered Index on a separate filegroup, it would also move the base table to that particular filegroup. (So I take it that you ONLY can move NON-CLustered Indexes to a separate filegroup.)
Placing Indexes on Filegroups:
[URL]
By default, indexes are stored in the same filegroup as the base table on which the index is created. A nonpartitioned clustered index and the base table always reside in the same filegroup. However, you can do the following:
• Create nonclustered indexes on a filegroup other than the filegroup of the base table.
Move an Existing Index to a Different Filegroup:
[URL]
Limitations and Restrictions
• If a table has a clustered index, moving the clustered index to a new filegroup moves the table to that filegroup.
• You cannot move indexes created using a UNIQUE or PRIMARY KEY constraint using Management Studio. To move these indexes use the CREATE INDEX statement with the (DROP_EXISTING=ON) option in Transact-SQL.
Hey,
I'm looking for a good way to rewrite my T-SQL code with 'bcp' to SSIS package, any help would be greatly appreciated?
I have table1 contain account numbers and output-filename for each account,
I need to join table2 and table3 to get data for each account in table1, and then export as a txt file.
Here is my code using bcp (bulk copy)
DECLARE @RowCnt int,
@TotalRows int,
@AccountNumber char(11),
@sql varchar(8000),
@date char(10),
@ArchPath varchar(500)
SET @RowCnt = 1
SET @date = CONVERT(CHAR(10),GETDATE(),110)
SET @ArchPath = '\D$EDATAWorkFoldersSendSendData'
SELECT @TotalRows = count(*) FROM table1
--select @ArchPath
WHILE (@RowCnt <= @TotalRows)
BEGIN
SELECT @AccountNumber = AccountNumber, @output_filename FROM table1 WHERE Identity_Number = @RowCnt
--PRINT @AccountNumber --test
SELECT @sql = N'bcp "SELECT h.HeaderText, d.RECORD FROM table2 d INNER JOIN table3 h ON d.HeaderID = h.HeaderID WHERE d.ccountNumber = '''
+ @AccountNumber+'''" queryout "'+@ArchPath+ @output_filename + '.txt" -T -c'
--PRINT @sql
EXEC master..xp_cmdshell @sql
SELECT @RowCnt = @RowCnt + 1
END
I have one of our production Accounting Databases starting from 2 GBnow grown into a 20 GB Database over the period of a few years...I have been getting timeouts when transactions are trying to updatedifferent tables in the database.. Most of the error I get are I/Orequests to the data file (Data file of the production dbAccounting_Data.MDF).I would like to implement the following to this Accounting database.I need to split the Data file into multiple files by placing some ofthe tables in different file groups. I have the server upgraded to beable to have different drives in different channels. I can place thesedata and log files in different drives so it will be less I/Oconflicts..I would like to have the following file groups..FileGroup 1 - which will have all database definitions (DDL).FileGroup 2 - I will have the AR Module tables under here..FileGroup 3 - I will have the GL module tables under here..FileGroup 4 - I will have the rest of the tables under hereFileGroup 5 - I will like to place the indexes under here....Also where will the associated transaction files go?I would like to get some help doing this. Is there any articles / helpavailable that I can refer to. Any suggestions / corrections/criticisms to what I have mentioned above is much appreciated...!Thanks in advance....
View 1 Replies View RelatedIf you have a SAN, is there any real benefit to breaking out large tables into file groups?
View 1 Replies View RelatedI am looking to find out when to use file groups when backing up. When should you use this, what's the benefit over just doing a full db backup? Is it better when you are dealing with large db's?
Also this question has been on my mind for a while. Why shouldn't you shrink the db after every full backup? What is the negative in doing so?
Thanks
Hi everyone,
When I do the following, did I put the files in Test1FG1 file group to the default file group(Primary) ?
ALTER DATABASE Test1
MODIFY FILEGROUP Test1FG1 DEFAULT
GO
Thanks
Hi everyone,
While creating our database in only one disc(C or D), suppose that we create more than one file group in order to group our data files. However, in this situation; I wonder that whether it brings any benefit or advantage to us.
Also, I wonder that why we always have to put our data file into separate file group if we use separate discs for data files. Is not it allowed to use only one file group even if we use separate dics ?
Would you explain these to me ?
Thanks
Hi all,
I receive data via FTP to our webserver nightly as .txt files and .dic (if anybody is familiar with idx realtor websites, that's what this data is).
I've learned recently that I'm not going to be able to use Access to import or link to this data, so I'm trying to get my feet wet with SQL.
I have been practicing importing text files into SQL db, but I notice that the dts imports everything as varchar 8000, and that you can edit that. I've got a .dic file that accompanies every .txt file that contains definitions of each fieldname, fieldtype & length & I was wondering how to import that data as well, without having to manually retype everything.
I would be happy to email these text files to anybody willing to take a look.
Thanks,
Carrie
I had a database that’s comprised of different file groups and log files spread out among different hard drives. I have recently upgraded the database to SQL 7.0 on a RAID 10 volume. I would like to consolidate all the file groups and files as well as various log files into one primary datafile and logfile. How do I do that? Thanks in advance.
View 2 Replies View RelatedHow to list all the file groups
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