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• Batch vs SQL statement

  - by AspOnMyNet

  a) A SQL statement is a single SQL command (for example, SELECT * FROM table1 or SET NOCOUNT ON). A batch on the other hand, is a number of SQL statements sent to the server for execution as a whole unit. The statements in the batch are compiled into a single execution plan. Batches are separated by the GO command So the only difference between SQL statement and a Batch is that each SQL statement is sent to server as a separate unit and thus is compiled separately from other SQL statements, while SQL statements in a Batch are compiled together? b) I assume one of major differences between a stored procedure and a Batch is that stored procedures are precompiled while Batches aren’t? thanx

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• Are there any differences between SQL Server and MySQL when it comes to preventing SQL injection?

  - by Derek Adair

  I am used to developing in PHP/MySQL and have no experience developing with SQL Server. I've skimmed over the PHP MSSQL documentation and it looks similar to MySQLi in some of the methods I read about. For example, with MySQL I utilize the function mysql_real_excape_string(). Is there a similar function with PHP/SQL Server? What steps do I need to take in order to protect against SQL injection with SQL Server? What are the differences between SQL Server and MySQL pertaining to SQL injection prevention? also - is this post accurate? is the escape string character for SQL Server a single quote?

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• Debugging SQL in PGAdmin3 when sql contains variables

  - by Mr Shoubs

  In SQL Server I could copy sql code out of an application and paste it into SSMS, declare & assign vars that exist in the sql and run.. yay great debugging scenario. e.g. (please note I am rust and syntax may be incorrect) declare @x as varchar(10) set @x = 'abc' select * from sometable where somefield = @x I want to do something simular with postgres in pgadmin3 (or another postgres tool, anyy reccomendations?) I realise you can create pgscript, but it doesn't appear to be very good, for example, if I do the equlivent of above, it doesn't put the single quotes around the value in @x, nor does it let me by doubling them up and you don't get a table out after - only text... Currently I have a peice of sql someone has written that has 3 unique varibles in it which are used around 6 times each... So the question is how do other people debug sql this sql EFFICIENTLY, preferably in a simular fashion to my sql server days.

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• Is it possible to make a MS-SQL Scalar function do this?

  - by Hokken

  I have a 3rd party application that can call a MS-SQL scalar function to return some summary information from a table. I was able to return the summary values with a table-valued function, but the application won't utilize table-valued functions, so I'm kind of stuck. Here's a sample from the table: trackingNumber, projTaskAward, expenditureType, amount 1122, 12345-67-89, Supplies, 100 1122, 12345-67-89, Supplies, 150 1122, 12345-67-89, Supplies, 250 1122, 12345-67-89, Misc, 50 1122, 12345-67-89, Misc, 100 1122, 98765-43-21, General, 200 1122, 98765-43-21, Conference, 500 1122, 98765-43-21, Misc, 300 1122, 98765-43-21, Misc, 100 1122, 98765-43-21, Misc, 100 I want to summarize the amounts by projTaskAward & expenditureType, based on the trackingNumber. Here is the output I'm looking for: Proj/Task/Award: 12345-67-89 Expenditure Type: Supplies Total: 500 Proj/Task/Award: 12345-67-89 Expenditure Type: Misc Total: 150 Proj/Task/Award: 98765-43-21 Expenditure Type: General Total: 200 Proj/Task/Award: 98765-43-21 Expenditure Type: Conference Total: 500 Proj/Task/Award: 98765-43-21 Expenditure Type: Misc Total: 500 I'd appreciate any help anyone can give in steering me in the right direction.

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• Simple solution now to a problem from 8 years ago. Use SQL windowing function

  - by Kevin Shyr

  Originally posted on: http://geekswithblogs.net/LifeLongTechie/archive/2014/06/10/simple-solution-now-to-a-problem-from-8-years-ago.aspxI remember having this problem 8 years ago. We had to find the top 5 donor per month and send out some awards. The SQL we came up with was clunky and had lots of limitation (can only do one year at a time), then switch the where clause and go again. Fast forward 8 years, I got a similar problem where we had to find the top 3 combination of 2 fields for every single day. And the solution is this elegant: SELECT CAST(eff_dt AS DATE) AS "RecordDate" , status_cd , nbr , COUNT(*) AS occurance , ROW_NUMBER() OVER (PARTITION BY CAST(eff_dt AS DATE) ORDER BY COUNT(*) DESC) RowNum FROM table1 WHERE RowNum < 4 GROUP BY CAST(eff_dt AS DATE) , status_cd , nbr If only I had this 8 years ago. :) Life is good now!

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• Linked server problem on SQL Server 2005

  - by BradyKelly

  I have a weird issue and I hope someone can steer me in the right direction for resolving this please. When I execute the following query against a linked server, I get the following error. I can connect to the server in SSMS as a separate server, and execute a similar query against its Deposits table. The nn.nn is my own replacement to avoid broadcasting our server addresses. The query: select td.Batch , td.DateTimeDeposited from Deposits cd left join [172.nn.nn.32\sqlexpress].Terminal.dbo.Deposits td on cd.DateTimeDeposited = td.DateTimeDeposited The error: OLE DB provider "SQLNCLI" for linked server "172.nn.nn.11\sqlexpress" returned message "Login timeout expired". OLE DB provider "SQLNCLI" for linked server "172.nn.nn.11\sqlexpress" returned message "An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections.". Msg 65535, Level 16, State 1, Line 0 SQL Network Interfaces: Error Locating Server/Instance Specified [xFFFFFFFF]. Notice how the error is about server 172.nn.nn.11 and not 172.nn.nn.32. SOLVED (STUPID ME): Somebody had added an extra bit to my query that was scrolled off-screen and was querying the 17.nn.nn.11 server.

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• SQL Server Management Studio not scripting all objects

  - by Ian Boyd

  i've been attempting to script a database using SQL Server 2005 Management Studio. i cannot get it to script some objects. It scripts others, but skips some. i can provide detailed screen shots the options being selected including all tables the folder where the script files will go the folder being empty before scripting the scripting process saying Sucess when scripting a table the destination folder no longer empty, with a hundred or so script files the script of some tables not being in the folder. And earlier SSMS would not script some views. Is this a known thing that the the Generate Scripts task does not generate scripts? Update Known issue on Microsoft Connect, but Microsoft couldn't repro the steps, so they closed closed the ticket. Fails on SQL Server 2005, also fails on SQL Server 2008. Update Two Some basic questions: 1.What version of SQL Server? Microsoft SQL Server 2000 - 8.00.194 (Intel X86) Microsoft SQL Server 2005 - 9.00.3042.00 (Intel X86) Microsoft SQL Server 2008 - 10.0.2531.0 (Intel X86) Microsoft SQL Server 2005 Management Studio: 9.00.4035.00 Microsoft SQL Server 2008 Management Studio: 10.0.1600.22 2.What O/S are you running on? Windows Server 2000 Windows Server 2003 Windows Server 2008 3.How are you logging in to SQL server? sa/password Trusted authentication 4.Have you verified your account has full access to all objects? Yes, i have access to all objects. 5.Can you use the objects that fail to script? (eg: select top(10) * from nonScriptingTable) Yes, all objects work fine. SQL Server Enterprise Manager can script the objects fine. Update Three They fail no matter what version of SQL Server you script against. It wasn't a problem in Enterprise Manager: Client Tools SQL Server 2000 SQL Server 2005 SQL Server 2008 ============ =============== =============== =============== 2000 Yes n/a n/a 2005 No No No 2008 No No No Update Four No errors found in the database using: DBCC CHECKDB go DBCC CHECKCONSTRAINTS go DBCC CHECKFILEGROUP go DBCC CHECKIDENT go DBCC CHECKCATALOG go EXECUTE sp_msforeachtable 'DBCC CHECKTABLE (''?'')' Honk if you hate SSMS.

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• Database cluster... without Master/Slave?

  - by RadiantHex

  Hi there! I'm wondering if it is possible to have a set of SQLdb servers to which data is written and have them replicate, avoiding conflicting information. I imagine that a Master/Slave structure would be mandatory, I would like to know if a system where servers have no hierarchy could support replication. Currently I'm using MySQL, but I would be happy to move to another database if needed. Any ideas? :)

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• SQL Server Management Studio not scripting all objects

  - by Ian Boyd

  i've been attempting to script a database using SQL Server 2005 Management Studio. i cannot get it to script some objects. It scripts others, but skips some. i can provide detailed screen shots the options being selected including all tables the folder where the script files will go the folder being empty before scripting the scripting process saying Sucess when scripting a table the destination folder no longer empty, with a hundred or so script files the script of some tables not being in the folder. And earlier SSMS would not script some views. Is this a known thing that the the Generate Scripts task does not generate scripts? Update Known issue on Microsoft Connect, but Microsoft couldn't repro the steps, so they closed closed the ticket. Fails on SQL Server 2005, also fails on SQL Server 2008. Update Two Some basic questions: 1.What version of SQL Server? Microsoft SQL Server 2000 - 8.00.194 (Intel X86) Microsoft SQL Server 2005 - 9.00.3042.00 (Intel X86) Microsoft SQL Server 2008 - 10.0.2531.0 (Intel X86) Microsoft SQL Server 2005 Management Studio: 9.00.4035.00 Microsoft SQL Server 2008 Management Studio: 10.0.1600.22 2.What O/S are you running on? Windows Server 2000 Windows Server 2003 Windows Server 2008 3.How are you logging in to SQL server? sa/password Trusted authentication 4.Have you verified your account has full access to all objects? Yes, i have access to all objects. 5.Can you use the objects that fail to script? (eg: select top(10) * from nonScriptingTable) Yes, all objects work fine. SQL Server Enterprise Manager can script the objects fine. Update Three They fail no matter what version of SQL Server you script against. It wasn't a problem in Enterprise Manager: Client Tools SQL Server 2000 SQL Server 2005 SQL Server 2008 ============ =============== =============== =============== 2000 Yes n/a n/a 2005 No No No 2008 No No No Update Four No errors found in the database using: DBCC CHECKDB go DBCC CHECKCONSTRAINTS go DBCC CHECKFILEGROUP go DBCC CHECKIDENT go DBCC CHECKCATALOG go EXECUTE sp_msforeachtable 'DBCC CHECKTABLE (''?'')' Honk if you hate SSMS.

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• SQL Server 2005 SP3 on Windows 7 - No Management Studio

  - by Mike Thomas

  I've been trying for a day and a half now to get SQL Server 2005, DEV edition, to work on Windows 7, 64 bit prof. I install from the disk, then run SP 3. I get a failure on the Client Components section of the Installation Progress along with this vague message - Product : Client Components Product Version (Previous): 1399 Product Version (Final) : Status : Failure Log File : C:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Hotfix\SQLTools9_Hotfix_KB955706_sqlrun_tools.msp.log Error Number : 1712 Error Description : MSP Error: 1712 One or more of the files required to restore your computer to its previous state could not be found. Restoration will not be possible. I've uninstalled all Visual Studio and tried to make this as clean as possible, and have read a lot of the blog posts, but am really at my wits end about this. I am not a DBA, but I use SQL Server all the time when coding and testing apps. Does anyone have any ideas as to where I can get this sorted out? I've been ati this for a long time and have never encountered an installation as bad as this one. Thanks Mike Thomas

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• MS SQL Server Firewall Ports

  - by mmacaulay

  Hi, I've recently found myself in the position of quickly deploying a production app on SQL Server 2008 (EXPRESS), and I've been having some issues with configuring firewall rules between our web server running the ASP.NET app and our database server. Everything that I can find on the internet claims that I should only need to have TCP ports 1433/1434 and UDP port 1434 accessible on the database server. However, we were unable to get connectivity going between the web app and the database with just those ports. With the help of one of the guys in our datacentre, we discovered that there was traffic also going to TCP port 2242 on the database server. After opening this port, everything worked, but we're not sure why. Later on, I had to reinstall SQL Server due to some disk space issues, and found that the problem had resurfaced - after another session with the packet sniffer, we discovered that this time traffic was going to TCP port 4541 on the database server. My question is, is there some configuration option that I'm missing in SQL server that's making it choose random ports? I'd like to have our firewall rules locked down as much as possible, and of course we'd like to avoid any future mysterious connectivity issues, especially once the app is live. Both servers are running Windows 2003 R2 X64.

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• Can't Connect w/ SQL Management Studio After Domain Change

  - by Sam

  Our old Small Business Server 2003 (acting as our domain controller) was on the fritz, so we replaced it with a new Windows Server 2008 box and set the server up as our new domain controller. In hindsight, it may have been a mistake, but we set up the new server as a replacement and tried to keep as much the same as possible, including the DOMAIN name. The problem was, that even though the domain name was the same, the guest computers somehow still realized it was not the exact same domain. We had to unjoin and rejoin the domain and port over everyone's documents and settings. This morning, when I attempted to connect to my local SQL Server Instance, it was saying that my login failed. When I tried to use the SQL Management Studio, it throws the error "Package 'Microsoft SQL Management Studio Package' failed to load" on startup, then exits without giving me a chance to change the login. I am using Mixed Authentication and have an administrative account as a backup. Ideas? If there is a more appropriate stack, please let me know where to put it.

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• Orphaned SQL Recordsets/Connections with IIS

  - by Damian

  I have an IIS 6 site running on Windows 2003 Server x86 with MS SQL2005 Enterprise edition running ASP Classic (no choice). The site runs very fast with about 8000 page views per hour. All of my SQL tables are indexed and I have used the profiler to check my queries, the slowest of which is only about 10-15ms. I have autoshrink disabled, autogrow is set to 250mb, database is 2gb with 800mb of free space. My problem is that every now and then the site will slow to a crawl for no reason. Pages that just have a simple 'connect to databse and increment a hit counter' work ok, but more SQL intensive pages that normally execute in about 60ms take 25,000ms to run. This happens for about 30 seconds and then goes away. I was having an issue with orphan recordsets and connections due to the way I was releasing them. I have fixed this up and the issue is much better, but I am still getting them. Is there a way with permon, etc. to track when SQL Server or Windows closes these Orphan connections? At least if I can monitor the issue I will know if I am making progress or if I am even looking at the right things. Is there anything else I might be missing? Thank you!

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• SQL Server log backups “stalling”

  - by MattK

  I have interited a box running SQL Server 2008 and Windows 2003, and have had a few events where largeish (35GB) log backups "stall", both before and after the installation of SQL 2008 SP1. The server log ships to a standby, so regular log backups are taken at 15 minute intervals. However, after an index reorg causes the log to grow to about 35GB (on a DB with about 17GB of data), the next log backup runs to ~95% completion, then seems to stop. The process shows as suspended, with a wait state of BACKUPIO. CPU, read, and write activity on the SPID also does not change, and the process stays in this state for hours, when normally a backup of this size should complete in about 20 minutes. This server has a single RAID-1 volume, thus the source database files and destination backup files are on the same volume. However, I cannot determine if another process is blocking the backup. The backup SPID cannot be killed, and the only way to terminate the log backup and clear the lock on the backup file is to cycle the SQL Server service. There was one event where the backup terminated completely, with an error that another process had locked the backup file, but no details about what that process was. Can anyone suggest a cause or diagnostic process to this situation?

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• Large scale Merge Replication strategy - what can go wrong?

  - by niidto

  Hi, I'm developing a piece of software that uses Merge Replication and SQL Compact on Windows Mobile 6. At the moment it is running on 5 devices reasonably well. The issues I've come up against are as follows: The schema has had to change a lot, and will continue to have to change as the application evolves. There have been various errors replicating these schema changes down to the device, uploads failing due to schema inconsistencies. Subscriptions expiring (after 14 days) and unable to reinitialize with upload - AKA, potential data los of unsynced data up to that point. Basically, the worst case scenario is data loss, and when merge replication fails, there seems to be no way back to get the data off. My method until now has been to drop and create the subscription on the device. I don't hear many people doing this, though it seems to solve everything. The long term plan is to role this out to 500+ devices. Any advice on people who have undertaken similar projects, and how to minimise data loss and make it so that there's appropriate error handling code to recover from sync failures would be much appreciated. James

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• hibernate and ehcache replication

  - by cachingsol

  Hi, I am working on a cache replication solution between nodes Node A - master node = Hibernate + Database + Ehcache as secondary cache Node B - regional node= Ehcache as prmiary cache. no Hibernate Node B is used only as near-by cache for query. Now I am updating data (Say SudentInfo) in Node A, it gets persisted and cached correctly. On replication side (I am using JMS) it sends a message to Node B. But the problem is, the message it sends is of instance CacheEntry(deep Inside Element), there is no way to resurrect the original object (StudentInfo). What I got in node B is CacheEntry with some attributes of Students but not actually an Student Object. Please note that I don't need Hibernate session/persistence in Node B, node B is only for fast query, persistence is done through Node A. So has anybody tried any solution like this? Is there any way to convert CacheEntry to actual object? or Tell ehcache to replicate original object rather than CacheEntry. Thanks for the help

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• Tables are not visible in SQL Server Management Studio but they are in Visual Studio using same acco

  - by Germ

  I'm experiencing a weird problem with a particular SQL login. When I connect to the server in Microsoft SQL Server Management Studio (2008) using this account, I cannot see any of the tables, stored procedures etc. that this account should have access to. When I connect to the same server within Visual Studio (2008) with the same account everything is there. I've also had a co-worker connect to the server using the same login and he's able to view everything as well. The strange thing is if I switch logins, I'm able to view objects that the other account has access to which indicates that there isn't a problem with MSSMS on my PC. Does anyone have any suggestions on how I can diagnose this problem? I've check to make sure I don't have any Table filters etc.

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• Database Replication OOD Pattern

  - by MrOnigiri

  Greetings fellow overflowers, After reading on MSDN about correct strategies on how to perform database replication, and understanding their suggestion on Master-Subordinate Incremental Replication. It left me wondering, what OOD design pattern should I use on this... The main elements of this strategy are the Acquirer, the Manipulator and the Writer. The first fetches data from the database and passes on to the second which might perform simple transformations to the data, before handling it to the final element, the writer, that writes the desired data on the destination Database. I thought about using the Chain of Responsibility pattern, but the Acquirer, Manipulator and Writer don't share a common role among theme, so It makes no sense. Should these elements be written as separate classes, or methods inside my service? Of course I'll be creating a DB Helper class as well, but that doesn't constitutes a problem. Wondering what your opinions on this are! Thanks for your replies

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• How can I turn a bunch of rows into aggregated columns WITHOUT using pivot in SQL Server 2005?

  - by cdeszaq

  Here is the scenario: I have a table that records the user_id, the module_id, and the date/time the module was viewed. eg. Table: Log ------------------------------ User_ID Module_ID Date ------------------------------ 1 red 2001-01-01 1 green 2001-01-02 1 blue 2001-01-03 2 green 2001-01-04 2 blue 2001-01-05 1 red 2001-01-06 1 blue 2001-01-07 3 blue 2001-01-08 3 green 2001-01-09 3 red 2001-01-10 3 green 2001-01-11 4 white 2001-01-12 I need to get a result set that has the user_id as the 1st column, and then a column for each module. The row data is then the user_id and the count of the number of times that user viewed each module. eg. --------------------------------- User_ID red green blue white --------------------------------- 1 2 1 2 0 2 0 1 1 0 3 1 2 1 0 4 0 0 0 1 I was initially thinking that I could do this with PIVOT, but no dice; the database is a converted SQL Server 2000 DB that is running in SQL Server 2005. I'm not able to change the compatibility level, so pivot is out. How can I accomplish this?

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• Is there any natural join replacement in SQL Server 2005?

  - by truthseeker

  Hi, I have two tables which I would like to join by ID field. I was trying to use for this "INNER JOIN". Everything would be good but there are two issues: As a result I receive twice column ID. I have to omit specifying columns which should be displayed under select statement. I would like to use there a *. I red that other sql-s have something like natural join and that is probably (or not?) an answer for my question. Unfortunately there is no join like that in SQL Server (2005). Do anybody knows any good replacement of it?

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• Best implementation for MySQL replication with Rails 3?

  - by vonconrad

  We're looking at potentially setting up replication for our primary MySQL database, and while setting up the replication seems pretty straight-forward, the application implementation seems a bit murkier. My first idea would be to set up a master-slave configuration and RW-splitting, with all write queries (CREATE, INSERT, UPDATE) going to master, and all read queries (SELECT) going to slave. Having read up on it, it seems that there are essentially two options for how to implement this with our app: Using an independent middleware layer for all MySQL connections, such as MySQL proxy or DBSlayer. However, the former is in Alpha and the latter has limited documentation. Using a Ruby-based gem/plugin, such as Octopus to achieve RW-splitting in the framework. If we wanted to go with a master-slave setup, what you recommend moving forward? The other thought I've had was to use a master-master configuration, but am unsure about the implementation of such a setup. Thoughts?

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• Articles about replication schemes/algorithms?

  - by jkff

  I'm designing an hierarchical distributed system (every node has zero or more "master" nodes to which it propagates its current data). The data gets continuously updated and I'd like to guarantee that at least N nodes have almost-current data at any given time. I do not need complete consistency, only eventual consistency (t.i. for any time instant, the current snapshot of data should eventually appear on at least N nodes. It is tricky to define the term "current" here, but still). Nodes may fail and go back up at any moment, and there is no single "central" node. O overflowers! Point me to some good papers describing replication schemes. I've so far found one: Consistency Management in Optimistic Replication Algorithms

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• How can i rename my column in sql table?

  - by Phsika

  how can i rename column name via alter table in Ms sql 2005 forexample: alter table tablename rename "old col name" to "new col name"

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• Why do I need to explicitly specify all columns in a SQL "GROUP BY" clause - why not "GROUP BY *"?

  - by rwmnau

  This has always bothered me - why does the GROUP BY clause in a SQL statement require that I include all non-aggregate columns? These columns should be included by default - a kind of "GROUP BY *" - since I can't even run the query unless they're all included. Every column has to either be an aggregate or be specified in the "GROUP BY", but it seems like anything not aggregated should be automatically grouped. Maybe it's part of the ANSI-SQL standard, but even so, I don't understand why. Can somebody help me understand the need for this convention?

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• How to get SQL Server Date in its native format?

  - by RoguePlanetoid

  I need to get a Date from an SQL Server Database (SQL Server 2000), the date is stored as such: 2009-09-30 00:00:00.000 I want to pass this date into a Classic ASP function to use this date in the Database somewhere else, however when I get the date, it converts in my ASP code to a locale-dependant version, such as: 30/09/2009 I just want the date as-is as formatting the date so it is correct again seems unnecessary, although if this the only way then fine - is there any way to treat it as string data so it stays like that, so it can be inserted back into the database as the same date, without needing conversion?

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