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

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3
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2answers
752 views

limit the number of rows returned when a condition is met?

Is it possible to limit the number of rows returned when a condition is met? I am working on a query to check if a student is ready to graduate, and they need to meet a certain number of credits per ...
1
vote
3answers
3k views

Easier way to handle so many isnull() situation

Is there any good way to avoid writing so many times isnull() function inside sproc ? I have stored procedure that use almost 30 times isnull() function, I think that I am miss a concept , but until I ...
4
votes
2answers
2k views

Executing a table type parameter stored procedure or function within a select clause

Just a quick question. I have a stored procedure that takes two parameters, a varchar (table name) and a tabletype (range of primary key ID values), and uses them to return all FK connections to and ...
3
votes
1answer
5k views

update statement with self join

I needed to copy information from one row of a table to another. I noticed I could do the following: update address set col1 = a2.col1, col2 = a2.col2, .....etc from address a1, address a2 where ...
1
vote
1answer
1k views

Conditional Where Statement Involving a NULL value?

Trying to find a way to pass off a third value within a 'bit' field. I would like to be able to utilize NULL as a searchable value. As in 'True', 'False', or 'NULL', the only issue is I'm unsure how ...
4
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3answers
3k views

Conditional WHERE Clause in a Table Valued Function

I have a table valued function CREATE FUNCTION [dbo].[DateRange] ( @StartDate date, @EndDate date, @Location varchar(25), @Device varchar(25) ) ...
9
votes
2answers
4k views

How to flatten results of a table with two related “many” tables?

I've reorganized some tables in my database to be more flexible but I'm not really sure how to write the SQL to extract meaningful data from them. I have the following tables (somewhat abbreviated ...
0
votes
1answer
1k views

how cursor implementations are different for each cursor type in sql server

In Oracle, there are only 2 types of cursor i.e. Implicit and Explicit cursor. Which is easy to understand. But, in SQL Server there are 4 Cursor AFAIK i.e. Static,Dynamic,Forward Only and Scroll. ...
1
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3answers
190 views

How to handle update or insert situations

From time to time my stored procedures looks like create procedure handle_data @fk int ,@value varchar(10) as begin if exists (select * from my_table ...
2
votes
1answer
151 views

how to show only changed rows

if want querying the following table : EventDateTime (DateTime), Host (guid), Flag ( bit) 2013-04-01 05:00, {id-x}, 0 2013-04-01 05:01, {id-x}, 0 2013-04-01 05:02, {id-x}, 0 2013-04-01 05:03, {id-x}, ...
0
votes
1answer
115 views

Why is there such a huge performance difference in these two join statements?

I have a query which i first wrote as (query has been simplified a bit) : select ROW_NUMBER() OVER (ORDER BY c.CategoryTypeID), c.name, count(p.id) from category c inner join product p on p.indID = ...
1
vote
5answers
33k views

The DELETE statement conflicted with the REFERENCE constraint

I'm trying to delete all users but getting the error: Msg 547, Level 16, State 0, Line 1 The DELETE statement conflicted with the REFERENCE constraint "FK_M02ArticlePersons_M06Persons". The conflict ...
0
votes
1answer
591 views

Need help in converting this cursor to a set based operation

I have a stored procedure which runs as part of a report database refresh nightly which takes about 2 hours complete. The object B_RPT_RC_AUDIT_ASSIGNED_TO_TEMP_T2 has 8 million rows. Can you suggest ...
5
votes
1answer
628 views

Unexpected Table Scan with Parameterized LIKE

I'm experiencing an unexpected table scan on SQL Server 2005 against a heap table when parameterizing a LIKE statement... but when the same value as the variable is hard-coded, the expected Index Seek ...
0
votes
1answer
187 views

Oracle equiv of T-SQL UNION ALL query [closed]

In T-SQL I can accumulate the results of two unioned queries using the following syntax: SELECT Q.a, SUM(Q.b) FROM ( SELECT f1 as a, f2 as b FROM TBL1 UNION ALL SELECT f1 as a, f2 as b FROM TBL2 ) ...
-8
votes
2answers
1k views

How can I check for SQL Server performance problems using T-SQL? [closed]

I know how to use the Profiler, Performance Monitor, and Activity Monitor. I want to find a way to troubleshoot performance using T-SQL. How can I check for Microsoft SQL Server performance problems ...
5
votes
3answers
1k views

Programmatically find indexes that cannot be rebuilt online

I am automating rebuild and reorganise indexes using T-SQL. I run into problems with indexes that cannot be rebuilt online. Primarily this happens because ntext/nvarchar columns are included. Is ...
1
vote
1answer
5k views

Backup stored procedure for full, differential and log backup

I wrote a simple stored procedure for backing up FULL, Differential and LOG backup. This is my stored procedure: Alter PROCEDURE BackupDB ( @BaseLocation varchar(1024), @BackupType ...
0
votes
0answers
138 views

trap xp_logininfo stored procedure error

Sql server 2000, windows 2003 server. I am trying find all the invalid domain login creates in sql 2000 server in a script using xp_logininfo and get message "Could not obtain information about ...
4
votes
2answers
627 views

Update strings for all cmdexec Jobs

Does anyone know if it's possible, (and furthermore advisable) to update all cmdexec strings in jobs on a server? We'd like to change our logging location, and in principle I'd think this could be ...
2
votes
1answer
2k views

Execute sp_WhoIsActive as a query

I am at a client where they don't allow Adam Machanic's sp_WhoIsActive stored procedure to be installed anywhere on the SQL server. Does anyone have any suggestions for running it as a query instead?
1
vote
1answer
6k views

how to add attachment(text file) to database mail?

I have scenario Daily i run a sql job to apply a new updates to one table - this job will create one text file daily - text file contains all new updates I can send a mail to client that job is ...
12
votes
3answers
6k views

Unique Identifier with Extra Characters Still Matching in Select

We are using SQL Server 2012 with a unique identifier and we've noticed that when doing selects with additional characters added onto the end (so not 36 chars) it still returns a match to a UUID. For ...
0
votes
1answer
53 views

Copy Permission From Windows Based user To Local user

I want to know if it is possible to copy the permissions of a windows user to a locally created user on SQL server?
1
vote
2answers
5k views

Need a way to query a table, and JOIN it with the TOP 1 related record from an other table

As a follow up to this question, I'm wondering if there is a better and/or more efficient way to gather the data in question. As stated, this query does return me 95% of the data I need -- SELECT ...
2
votes
2answers
2k views

Why do I need to use a sub query to filter down a grouped select?

If I do this -- SELECT dv.Name ,MAX(hb.[DateEntered]) as DE FROM [Devices] as dv INNER JOIN [Heartbeats] as hb ON hb.DeviceID = dv.ID WHERE DE < '2013-03-04' GROUP BY dv.Name ...
4
votes
2answers
201 views

Help with tricky update statement

I've tried writting this update statement every possible way I can think of but I either wind up producing invalid results or run into a syntax barrier. I have two table variables: DECLARE ...
3
votes
2answers
5k views

difference between UPDLOCK and FOR UPDATE

given the following code: Set conn = CreateObject("ADODB.Connection") Set RS = CreateObject("ADODB.Recordset") conn.BeginTrans ... //This is the line it is about RS.Open "SELECT a,b FROM c FOR ...
0
votes
2answers
852 views

Is there a sortable ('order by') alternative to CURRENT_TIMESTAMP

I'm in the process of looking for a way to find a sortable alternative to a column that is populated with CURRENT_TIMESTAMP and I'm stumped at the moment. I have a web based form with multiple ...
7
votes
2answers
1k views

Is there any difference between putting a column alias at the start or the end of the column definition?

I've always seen and written my column aliases as SELECT 1 as ColumnName but today came across a query that used SELECT ColumnName = 1 Is there any difference in how these two queries get ...
4
votes
2answers
2k views

Subquery in the VALUES clause

Here's a real-world schema: CREATE TABLE [dbo].[Setting] ( [ID] [BIGINT] NOT NULL, [Module] [NVARCHAR](400) NOT NULL, [Property] [NVARCHAR](400) NOT NULL, [Value] ...
9
votes
3answers
6k views

Choosing the right algorithm in HashBytes function

We need to create hash value of nvarchar data for comparison purposes. There are multiple hash algorithms available in T-SQL, but which one the best to choose from in this scenario? We want to ensure ...
16
votes
1answer
8k views

What exactly does “No Join Predicate” mean in SQL Server?

MSDN "Missing Join Predicate Event Class" says it "indicates that a query is being executed that has no join predicate". But unfortunately it does not seem to be as easy as that. For example, very ...
0
votes
2answers
3k views

How to set the timeoffset in a Datetimeoffset column without changing the date part

Is there any way to set the timeoffset of a datetimeoffset column directly without having to use SWITCHOFFSET which changes the date as well? In the post below, we can see the SWITCHOFFSET will ...
3
votes
1answer
1k views

LIKE character length limitation

The background to this question can be found here. The following part of my stored procedure does not work. Is there a character length limitation for the LIKE clause? t1.ProductList sometimes can be ...
4
votes
1answer
473 views

Is it possible in SQL Server to change default “order by” direction from asc to desc?

This question came up in a discussion at work... given the following T-SQL statement: select firstname, lastname from users order by lastname; the default sort order on the order by clause is asc. ...
0
votes
1answer
197 views

Changing data type from DATE to CHAR(10) with a query

I want to alter the date type in a database that has 40 tables from DATE type to CHAR(10) type, without opening the tables and manipulating them in Management Studio. i.e. only with a script/query. I ...
2
votes
1answer
484 views

Parameter triggers different execution plan, but why?

I have a table CREATE TABLE [dbo].[Numbers] ( [Date] [date] NULL, [Time] [time](3) NULL, [Value] [char](10) NULL ) and the table has > 10 Billion rows, therefore it ...
2
votes
1answer
92 views

Synchronize Queries Retrieving Sessions And Locks From DMVs

I have a SQL script that I run when I want to see what is happening in the database. The script has many queries that return information from DMVs, but the two I use most are "Requests" ...
4
votes
2answers
993 views

Identify NON-ANSI joins in SQL Server 2008 R2 on a Database that's in 2000 (80) compatibility mode

We have a very old database running on SQL Server 2008 R2. The database is running in 2000 (80) compatibility mode and has oodles of NON-ANSI joins in stored procedures, views and functions. We need ...
0
votes
1answer
7k views

how to return table on sql function

I am very new to sql create function i wanted to check data column value at table the purpose is to return full table where data is null , <0 , >1 the problem is i am trying make data is ...
1
vote
1answer
73 views

Reference the database from a stored proc?

I'm using this T-SQL to get index stats (edited for brevity): SET @db_id = DB_ID(N'TestDB'); SET @object_id = OBJECT_ID(N'TestDB.dbo.Users'); SELECT * FROM sys.dm_db_index_physical_stats(@db_id, ...
7
votes
1answer
121 views

Trouble with SQL and aggregates

With this query: SELECT SUM(qty) AS sumQty, cnetprodid FROM quoteitem WHERE ordered = 1 AND sageSOPOrderReturnLineID IS NOT NULL AND LEN(LTRIM(RTRIM(cnetprodid))) > 0 ...
3
votes
1answer
117 views

Dissecting Joins

Recently I asked a question in dba.stackexchange the question was about data hierarchy in sql and a guy named chris allen answered the question and I really loved it but when I try to understand that ...
3
votes
1answer
1k views

return percentage of records based on value in column

I'm working on a sql query that needs to get a percentage of the records based on the value of a particular column. The percentage is given by the user. A stripped down version of the query is below ...
2
votes
3answers
22k views

Non-Clustered-Index on a temporary table

I am working on various query optimization techniques. I reduced the query execution time from 1 minute to 12 seconds just by adding a Non-Clustered-Index on a table including one column (which is ...
7
votes
4answers
1k views

Returning rows where all non-NULL values are equal

Is there a simpler T-SQL construct for "all of these columns to be equal (NULLs ignored) on a row" - effective I want to say: WHERE MIN(a, b, c) = MAX(a, b, c) OR COALESCE(a, b, c) IS NULL this ...
1
vote
2answers
736 views

How to link each column in sql?

I have been working around on a query given by one of my developers who works on crystal reports as a junior DBA, I always like to help them even though I am busy with other things as it will increase ...
3
votes
1answer
385 views

sp_startpublication_snapshot Parameter(s)

I am creating a stored procedure that: Restores a DB from a .bak giving the .mdf and .ldf a new name (so we have have several copies of the same DB up (If specified in the SP's parameter) Creates ...
3
votes
1answer
349 views

Query Performance Issue

I have this below query which is behaving bit weird . well Weird in the sense that I couldn't find complete explanation for this. Version : Sql Server 2008 R2 Enterprise No fragmentation . ...