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

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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
4k 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 ...
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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 ...
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3answers
3k views

Using Row_Number to find consecutive row count

I have this column of ints that represent an occurrence of a signal and I'm trying to add a column that shows the count of consecutive row If my data looks like this 724 727 728 733 735 737 743 747 ...
5
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1answer
765 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 ...
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3answers
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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 ...
1
vote
1answer
482 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 ...
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votes
2answers
3k views

Cast NTEXT to INT for calculation and comparison

I need to convert an NTEXT column to an INT so I can perform some checks on it. The first check would be is value = 0, and the second would be if it was an even or an odd number. I've got this ...
1
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1answer
747 views

T-SQL, show a set of rows (specific column) as a field, for a better desc, please see the table relationship

I have been having a problem for quite a while now, that I can show with a sample of 5 tables (I'm actually dealing with more than 5!): -------------------------------- shipments ...
4
votes
2answers
3k 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 ...
2
votes
1answer
778 views

How to design database for tree view with an infinite depth

I am trying to combine C# and SQL2005 for an application which need to have tree view control. One of user requests is to that tree view can user friendly grow into infinite dept of child nodes. That ...
2
votes
1answer
82 views

How to get dependencies order

I have a Database Called Total and I have about 40 tables in it.I am trying to move the tables in the database into a different server So I have prepared all the create table scripts but the problem ...
7
votes
1answer
590 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 ...
2
votes
2answers
6k 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 ...
7
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 ...
1
vote
1answer
300 views

SQL Server 2008 R2 - Weekly / Monthly Statistics

I'm new working with SQL Server 2008 R2 Express, and I´d like to gather some statistics every week / month for users who are connecting to this server. For instance, how many times they were ...
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 /> ...
1
vote
1answer
184 views

EXISTS and sub-query cost

i've just wondered if there's a difference in cost(memory,cpu) of an EXISTS or NOT EXISTS in following queries. Does it make a difference if i select NULL, 1 or columns? 1) SELECT id FROM Parent p ...
8
votes
2answers
195 views

Non-Clustered Indexes - keys and nonkeys

I just want to make sure I'm on the right track with these concepts, so any feedback would be greatly appreciated. Here's my theory from the query I've just optimised, through a process of trial and ...
6
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4answers
4k views

T-SQL command to log in as a different user?

Is there a T-sql command, like the Oracle "Connect" which lets me change the user that I am logged in as?
5
votes
4answers
1k views

Speeding up COUNT(*) - WHERE clause slowing query

The following query takes 497 ms to run, if I remove the AND portion onwards it only takes 320 ms. Is there any way to speed this up? The only indexes I have on 'messages' table is a PK on ...
2
votes
2answers
516 views

Make sure two columns are sorted in the same order

I have a table like this: CREATE TABLE T ( ID INT NOT NULL IDENTITY PRIMARY KEY, CreateDateTime datetime2 NOT NULL, --other columns ) How can I make sure that ID and CreateDateTime are both ...
1
vote
1answer
544 views

Why is the output of this query being returned like this?

I have a T-SQL query : select CAST(0 as float(53)),CONVERT(nvarchar(max),CAST(0 as float(53)),128) the output of which is 0,0.0E0 Can some one explain why it is not 0,0 ? The database is SQL ...
7
votes
1answer
91 views

sysschedules datatype choices

I am Curious. Why does TSQL save the values in msdb.dbo.sysschedules for date and times as ints instead of using datetime. I assume the reason dates back to something in SQL Server 2000. Was it a ...
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3answers
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Questions about handling NULLs and empty strings in nvarchar and numeric fields

I understand that questions similar to these pop up often around here. I have searched before posting these but I didn't find any QA threads that completely answer my questions. In a table, I ...
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votes
2answers
1k views

Is there any way to speed up a query with 3x UNION on the same large table?

Assuming that the following query is legitimate and executes successfully, is there any way to speed it up? SELECT foo from T1 --T1 is a huge (>5e6 rows) table with no indexes UNION SELECT bar ...
3
votes
1answer
4k views

sp_execute expects parameter '@handle' of type 'int'

I'm trying to check in a stored procedure if a table exists in my destination database. If it does not then I will create the table useing the information_schema tables from the source database. ...
10
votes
2answers
4k views

Good way to call multiple SQL Server Agent jobs sequentially from one main job?

I've got several SQL Server Agent jobs that should run sequentially. To keep a nice overview of the jobs that should execute I have created a main job that calls the other jobs with a call to EXEC ...
2
votes
2answers
1k views

Bulk grant execute permissions for scalar functions & stored procedures

We have a situation where we have restored a large number (50+) of MSSQL2008 databases from backup and most if not all of them require that a user is granted EXECUTE permissions on scalar functions ...
10
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1answer
5k views

Should I add SET NOCOUNT ON to all my triggers?

It is fairly common knowledge that you should have SET NOCOUNT ON by default when creating new stored procedures. Microsoft has changed the default template to include this in 2012. I thought ...
8
votes
2answers
937 views

How does SQL Server store the information in Job Schedule Properties?

I know there is SELECT * FROM msdb..sysjobschedules, but that just shows the next time a job is scheduled to run. I want to know how this is all determined and stored. So where does it store the ...
2
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0answers
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SQL Server : where with cast(value as varbinary) vs cast(value as varbinary(300))

Are there any theoretical performance differences between these queries in the scenarios below. Scenarios are: MyTable has Value nvarchar(300) MyTable has Value nvarchar(max) Q1: declare @p ...
2
votes
2answers
669 views

Reorganize Indexes T-SQL

I'm moving a database to SQL Azure and with that I lose the maintenance plans so I am going to use a Worker Role to schedule them. When I open the properties of the Rebuild Index Task and click on ...
3
votes
2answers
152 views

When did a specific database come online?

How can I determine when the state of a specific database switched to online? Background: I want to determine how long the database is in use to find out how reliable sys.dm_db_index_usage_stats ...
11
votes
5answers
2k views

UPDATE with JOIN on 100mm records, how to do this better? (in T-SQL)

I need to update 100 million records in a single table, in effect, normalizing the table by replacing the varchar value of a column with simply an ID. (I say "replacing" but really I'm writing the ID ...
3
votes
1answer
722 views

DENY EXECUTE on one schema object hides other objects in same schema

I have five stored procedures in a schema [XTR], the users are all in one AD group [AD\Users] and have db_datareader and public assigned to them. On one of the stored procedures I don't want to give ...
5
votes
1answer
2k views

Using FLOATs with RAISERROR

I am using RAISERROR() to provide some basic Unit Testing functionality (as here), but I am frustrated by the inability to use FLOATs in the error message. I know I can cast the float to a string, but ...
3
votes
1answer
948 views

Can I Rebuild indexes in a DB except for one table?

I have a table in my database that is constantly monitored by an application server for changes. Unfortunately rebuilding the indexes connected with this table breaks the app server's connection. This ...
2
votes
1answer
2k views

Looking for a Trigger to change inserting strings?

I have an MSSQL Server 2008 Database. There are some tables in my Database like below : table1, table2, table3, .... each table has a NVARCHAR(50) field (Name) Now, I wanna change the strings that ...
1
vote
1answer
636 views

Return a percentage of the full record set

I'm pulling back a list of orders but I need to only display a percentage of the records. for example we want the top 30 or top 50. The percentagbe is variable so I'd like to not use TOP. I tried ...
2
votes
2answers
780 views

Design best practices for last tracking with indexed view

My tables structure is below : TbDoc (ID int , ...) TbDocActions( ID Int, DocID Int, Date DateTime, col1 int, col2 int, ...) I want to have indexed view to get last TbDocActions columns for ...
6
votes
2answers
8k views

Create new function by code if it doesn't exist

I want to create new function by script in my database. The script code is below: IF Exists(Select * From sys.sysobjects A Where A.name =N'fn_myfunc' and xtype=N'FN') return; CREATE FUNCTION ...
3
votes
2answers
3k views

How can I get a list of column names and types from a resultset?

Say I get a resultset back from the following query: select * from sys.database_files; For any given resultset, I want to be able to query the column names and types so I can then create tables to ...
5
votes
1answer
307 views

difference of left join and left outer join

In SQL Server join syntax we can use LEFT JOIN or LEFT OUTER JOIN and query result with each of above join not difference. this is a question for me that which are more useful.
3
votes
1answer
819 views

New foreign key and merge replication

We are experiencing an issue when creating a new foreign key to an existing table, which is being replicated to another SQL Server 2008. More specifically, we are adding a new foreign key to this ...
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votes
2answers
5k views

Why does “SELECT POWER(10.0, 38.0);” throw an arithmetic overflow error?

I'm updating my IDENTITY overflow check script to account for DECIMAL and NUMERIC IDENTITY columns. As part of the check I compute the size of the data type's range for every IDENTITY column; I use ...
2
votes
1answer
74 views

How to consolidate script duplication?

I just want to know how you deal with long scripts and redundant information. Here is an example: Suppose you have three tables: table1, table2, and sometable. And you have SELECT id = 1 org ...
11
votes
5answers
3k views

Does it make sense to use SQL Server's bracket notation in hand written code?

Code generators tend to be simpler when they generate output using the new Microsoft bracket notation ([]) for nearly everything. When I first saw it, I though wow a reincarnation of the somewhat ...
3
votes
2answers
474 views

can I convert an integer to base-2 without a function

Here's a bit of a challenge. I am working with the table ReportServer.Schedule and there is a column called DaysOfWeek. I may not be using the proper terminology here, but this is an integer from ...