Transact-SQL (T-SQL) is a dialect of SQL used by Microsoft SQL Server and SAP's Sybase.

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31
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1answer
20k views

MERGE a subset of the target table

I am trying to use a MERGE statement to insert or delete rows from a table, but I only want to act on a subset of those rows. The documentation for MERGE has a pretty strongly worded warning: It ...
4
votes
1answer
148 views

Is there a compact way to use a NOT IN (1,2,3) syntax when setting a variable?

Expressions like NOT IN (1,2,3) are valid in a where clause: SELECT foo FROM bar WHERE ((record_type NOT IN (2, 3, 7, 18, 19, 20, 21,12,13,22)) However if I want to move an elaborate expression ...
10
votes
1answer
787 views

Forcing an index spool

I know its something that should be avoided for performance reasons, but am trying to show a condition where it appears as a demo on how to make sure it does not appear. However, I end up with a ...
2
votes
2answers
13k views

exist (select * from my table)

My colleague suggests that Query 1 should run faster than Query 2. If it's true, please anyone explain me the reason. Thanks. Query (1): IF ( SELECT COUNT(UnitTrustCounterId) FROM ...
1
vote
1answer
2k views

SQL Server Full-Text Indexer with stoplists/stopwords

As I'm working on a graduate project (Textmining with SQL Server 2012 Semantic Search) I run into a situation where I need to post a question on this website, hoping someone can help me. This ...
3
votes
1answer
2k views

error in Execute SQL Task with parameter

I have an Execute SQL Task object in the Error handlers section of a SSIS package. What it does is inserting a record to a table using OLE DB connection. There is a value in the insert statement that ...
-3
votes
3answers
4k views

Join tables on a partial string match

input: I have a table containing (any number of) user-supplied strings: ╔═══════╗ ║ Value ║ ╠═══════╣ ║ To ║ ║ An ║ ╚═══════╝ And a table of user details: ╔════════╦══════════╗ ║ UserID ║ ...
1
vote
2answers
676 views

Bitwise operations in TSQL

Take the following code: Declare @a integer set @a = 0 set @a = @a | cast (1 as BINARy) set @a = @a | cast (100 as BINARy) select cast (@a as integer) Now, shouldn't the output of this code be 5 ? ...
6
votes
3answers
1k views

Dynamic database reference in T-SQL scripts

We have a set of databases (development, QA and production, dev-foo & dev-bar, qa-foo & qa-bar and just foo & bar respectively). Inside foo family of databases there's a view that should ...
4
votes
1answer
346 views

T-SQL and GPS co-ordinates

I'm looking to store GPS co-ordinates in an MS SQL Server DB for location matching of users with GPS-enabled mobile phones. I've read about STDistance on MSDN, but it only appears to exist in SQL ...
3
votes
2answers
275 views

Defrag a HEAP by creating clustered index and immediately dropping it

I'm writing a script which intends to defrag a HEAP based table by creating a dummy col with a clustered index and then immediately dropping it. (It's someone else's app and I don't want to make any ...
3
votes
2answers
7k views

Create job to send alert using sp_send_dbmail when table value greater than x

PROBLEM The SMScounter.Counter is used to accumulate usage from a service. The service has a programmatic cap of 1000. I would like to alert users when this cap is breached. TABLE CREATE CREATE ...
0
votes
1answer
74 views

modify T-SQL to get results

I am an amateur. I am trying the following select * from [dbo].[AccessFeeDetail] where LastLoginDate >= '10/15/2012 00:00:00.000', jobname not like 'Uptest_%' I am making a mistake on where ...
1
vote
1answer
401 views

Stuff function in T-SQL

select STUFF( STUFF(RIGHT('000000' + CAST([run_duration] AS VARCHAR(6)), 6) , 3, 0, ':') , 6, 0, ':') AS [LastRunDuration (HH:MM:SS)] from sysjobhistory The query I have ...
1
vote
2answers
11k views

how to calculate difference of first row and last row fields value in each group

I have table with structure like this: +-------+------------------+ | Value | Date | +-------+------------------+ | 10 | 10/10/2010 10:00 | | 11 | 10/10/2010 10:15 | | 15 | ...
1
vote
0answers
116 views

TSQL Trigger Incorrect Syntax

Im a SQL noob but here goes - I have a trigger in SQL which is giving me an incorrect syntax error E.G: INSERT INTO aTable ( tTypeId, opId, inserted.Id ) SELECT 3, 0, inserted.Id ...
6
votes
2answers
1k views

T SQL Table Valued Function to Split varbinary(max) into 16byte GUIDs

I am trying to write a function which will split a varbinary(max) field into a table with 16 byte GUIDs, but am struggling. I haven't been able to find any examples or walkthroughs on how to do this ...
0
votes
3answers
516 views

Pivoting row contents to produce one dimensional result

I have a table with a varchar column containing pipe-delimited values For example: Row 1 Column 1 = a|b|e|gg|foo Row 2 Column 1 = oV|foo|do Row 3 Column 1 = boop How can I query this to return ...
7
votes
4answers
1k views

Create a plan guide to cache (lazy spool) CTE result

I normally create plan guides by first constructing a query that uses the correct plan, and copying it across to the similar query that doesn't. However, that is sometimes tricky, especially if the ...
2
votes
2answers
2k views

Merge two records in the same table, keeping foreign key relationships intact for both

I have a table, called SITES, that has three columns, lets say it looks like this: ID Name Path 1 Google http://www.google.com/ 2 Microsoft http://www.microsoft.com/ I also have ...
3
votes
1answer
480 views

How are foreign keys resolved when creating tables in batch?

I am creating a database version management tool with the goal of being able to recreate a database from scratch using text/sql files contained in source control. As part of establishing a baseline ...
4
votes
1answer
798 views

Calculating Median Value within a Group By

I have a SPROC which calculates the Mean duration of a request / response cycle within 10 minute intervals. This works well and suits my needs for plotting charts. What I would like to do next is ...
3
votes
2answers
7k views

How to map another server through SQL Server Management Studio

I am trying to map another server by giving the command EXEC xp_cmdshell 'NET USE H:\568.256.8.358\backup_147 1234abc /USER:cranew /PERSISTENT:yes' I got an error with this network path not ...
0
votes
1answer
653 views

Query performance and join hints, plan cost, and duration

Having some trouble identifying why a query's duration would decrease when using OPTION (HASH JOIN) or OPTION (MERGE JOIN), although plan cost increases. Background I have a reporting database using ...
2
votes
2answers
2k views

Linked Server Query Results: OPENQUERY vs Distributed Transactions [closed]

I have two databases. They are on different servers. One is named REPORTDB and the other is named TRANSDB. TRANSDB is referenced as a linked server on REPORTDB named TRANS. I execute a query like ...
4
votes
1answer
3k views

How can I create a stored procedure using xp_fixeddrives?

I need a stored procedure to check the free space in 2 linked servers .(the servers are linked manually) .I have comed up with a query like this and using sql server 2008 ALTER PROCEDURE freespace AS ...
1
vote
1answer
384 views

Query tuning help needed (Hash Match and Table Scans)

I need help optimizing the following query (returning ~8k rows): SELECT A.sys_id, 'AppSvrRels' = CAST(SUBSTRING((SELECT (', ' + T.name) FROM ( ...
2
votes
2answers
220 views

T-SQL Naming Standard

Is there a recommended (official or not) style from Microsoft regarding naming and casing in T-SQL? If there isn't one from Microsoft then is there one with broad acceptance?
1
vote
1answer
767 views

bulk insert from file

I am often requested to upload data from file (let's say csv) into a Sql Server 2008 db. I would like to use BULK INSERT, but I have no access to the db server file system. Questions is there a ...
0
votes
2answers
220 views

Print variable of same datatype

I am looking for to print two variables of same datatype I have something like this declare @one int ,@two int set @one=1 set @two=2 print @one+@two obviously it will give a result 3 but I need ...
3
votes
1answer
5k views

To use or not use ISNULL(NULLIF(Field1, ''))?

In the past I've seen use of something such as SELECT ISNULL(NULLIF(Field1, ''), 'NewValue') to tersely get a fallback value. However, since the advent of CASE in TSQL, we've favored something ...
5
votes
1answer
234 views

Can We Perform an “Up-To-The-Minute Restore” After Taking Transaction Log Backups?

The Setup: Say we have a Database in Full Recovery Mode that does a nightly Database Backup, Transaction Log Backup, and Transaction Log Shrink. Now the Transaction Log grows so quickly during the ...
7
votes
3answers
5k views

Can I change table structure in a transaction and then roll it back if there is an error?

I have some ALTER TABLE statements that I am running. Not all of them work (they are the result of running SQL Data Compare) and I want to group them in some transactions and roll back the statements ...
4
votes
2answers
1k views

Restore all applicable files in a backup device in T-SQL

I'm using SQL Server (2008 R2 in this case) and I am backing up my databases into backup devices (one per database). Every Sunday the device is overwritten with a new full backup, every night a ...
7
votes
3answers
7k views

Restrict update on certain columns. Only allow stored procedure to update those columns

I have sensitive price columns that I would like to have updated only through a stored procedure. I would like all code or manual attempts to alter values in these price columns to fail if it is not ...
5
votes
1answer
800 views

Query performance while using sqlcmd [duplicate]

Possible Duplicate: Running queries with SQLCMD vs. Running queries with SSMS I have a number of scripts that query the data from different tables and consequently update them. I have ...
1
vote
1answer
504 views

Using sys.dm_os_performance_counters and DIFF to display logins per second

PROBLEM Running my script below i can see the number of logins as an accumulated number to my instance: SELECT cntr_value AS [LoginsPerSec] FROM sys.dm_os_performance_counters WHERE ...
1
vote
2answers
2k views

Options for keeping two SQL Server Compact databases in sync?

Developer here. I have a system where there is a front machine creating rows in a moderately complex database, and a back machine that must sync with the front machine to run reports. Both run SQL ...
1
vote
1answer
1k views

Trying to Build TreeView Query in T-SQL

I have parent records in two tables, Table1 and Table2. Some records in Table3 are children of Table1, and some are children of Table2. I would like to build a query that I can use to populate a ...
4
votes
2answers
4k views

Query two SQL Server databases in same function but on two different servers

Suppose I have two database servers (DB-SERVER-1 & DB-SERVER-2), and there is a single database on each server (DB1 & DB2). Both are SQL Server databases. Is it possible to query both ...
4
votes
2answers
496 views

T-SQL Syntax error copying views dynamically

I'm creating a stored procedure to copy all views from one database to another using the following code. ALTER PROCEDURE [dbo].[spCreateViews] (@SourceDB NVARCHAR(200), @DestinationDB ...
7
votes
1answer
617 views

CATCH block is triggered when it should not

On my neverending quest for shooting myself in the foot with save transaction I seem to have found even more ways to fulfill the quest purpose. The save transaction clause itself this time is out of ...
5
votes
3answers
2k views

Total of orders open on a given date for each date in a date range

This question is similar to Running total with count?, but please allow me to explain some further twists on the issue. I'm using SQL Server 2008, so the cursor option described by Aaron Bertrand ...
3
votes
2answers
7k views

SQL Server : how to drop all constraints on a table in T-SQL

I´d like to drop all constraints on all tables in my database, because I need to change the relationships of many of the tables. Is there any way to do that with T-SQL? I cannot find any solution ...
3
votes
1answer
3k views

How to remove xmlns from child elements with FOR XML

I have a TSQL query that I use to generate a SOAP document. I am using two namespaces. Namely: - http://schemas.xmlsoap.org/soap/envelope/ for "packaging" the soap document - A custom one that ...
8
votes
5answers
67k views

Writing select result to a csv file

We need to write the SELECT query results to a csv file. How can it be done using T-SQL in SQL Server 2008 r2? I know that it can be done in SSIS, but for some reasons, we don't have this option. I ...
8
votes
3answers
6k views

SQL Server 2008 merge statement deadlocking itself

I have the following procedure (SQL Server 2008r2): create procedure usp_SaveCompanyUserData @companyId bigint, @userId bigint, @dataTable tt_CoUserdata readonly as begin set ...
6
votes
3answers
4k views

RETURN statement before DEALLOCATE CURSOR

Question about use of Cursors in combination with RETURN in a SQL Server 2008 Stored Procedure Consider this example: CREATE PROCEDURE [dbo].[test] @ReturnEarly BIT = 0 AS BEGIN SET NOCOUNT ...
2
votes
1answer
642 views

Rules in SQL Server 2005

The syntax for rules in SQL Server 2005 is given: CREATE RULE [ schema_name . ] rule_name AS condition_expression Whenever using rule, for example: CREATE RULE list_rule AS @list IN ('1389', ...
4
votes
1answer
4k views

T-SQL: Convert XML to string without self-closing tags

We have a weirdo system we're integrating with which consumes XML, but it does not understand self-closing tags, so <BOOKING> <BOOKINGID>56812</BOOKINGID> <PERSONCODE /> ...