All Questions
Tagged with sql-server-2005 performance
259
questions
0
votes
0
answers
1k
views
SQL Server : restrict database access only to specific user login
I have an odd situation where I ran this query to see how many connections are opened towards my database, and I found out this:
SELECT
DB_NAME(dbid) as DBName,
COUNT(dbid) as 'Number Of ...
- 3,773
0
votes
1
answer
71
views
SELECT statement takes hours to execute
I'm trying to run this SELECT statement but I takes hours to execute. I have also created index on those tables.
SELECT DISTINCT
j.Name AS State,
l.DisplayName AS ServiceCenter,
l....
- 5
5
votes
1
answer
986
views
SQL Using a String Function on Indexed Column Performance
I have a general question regarding using String Functions and their impact on performance.
I have a table with a non-clustered index on column ID. The column has 20 digit varchar in it.
When I run :...
- 1,635
1
vote
0
answers
19
views
trigger performance over different cases
I have a table that collects logs of every check_in. I want to pick 4 columns to later process them. I have placed a trigger on every insert and columns are copied. I am confused over which way to do ...
0
votes
2
answers
584
views
SQL Query slow beginning of each day
I have a basic query below.
Select [ID]
FROM MyTable
Where [TextBlobField] like '%test%'
This query takes a long time when I first run it each day. After that it only takes about 5 seconds. Next ...
- 19
0
votes
1
answer
51
views
Why does query performance diminish with additional join conditions
I have a simple query with two tables. massfehler_hardware has 50K rows and no indexes. f_produkt has 38M rows with a clustered unique index on account_number, item_number, contract_number, [and some ...
- 1,708
1
vote
0
answers
295
views
sp_executesql select * is much faster than select column fields?
I encounter an issue where when I use sp_executesql to select * (6 seconds) is much faster than select column fields (2min). (using sql server 2005)
I can't understand why the performance is so much ...
- 11
1
vote
3
answers
61
views
Best indexes to create when a search may be on any or all of 3 fields
I am working on a new search function in our software where a user will be allowed to search on any or all of 3 possible fields A, B and C. I expect that if anything is entered for a field it will be ...
- 53
0
votes
1
answer
195
views
SQL Server 2005 : intermittently slow Inserts
I have a client app that is submitting the following command to SQL Server 2005. At a specific time of day we are having performance issues where some of the requests are taking between 2 - 8 seconds ...
- 13
1
vote
4
answers
167
views
Stored Procedure Takes Longer to Execute then TSQL Query in SQL Server 2005
I am very new to TSQL and stored procedures
TSQL and stored procedure both uses defined variable. TSQL takes 19 seconds to get results, however stored procedure takes around 8 minutes
Stored ...
- 21
1
vote
1
answer
48
views
How to speed up this group by with CSV column?
I have a simple table: create table breaktypes (parent_id int, child_id int). The data is basically this:
parent_id child_id
125 1
125 3
125 19
125 3722
126 32
126 ...
- 61.1k
0
votes
0
answers
240
views
What is the most efficient way to bring large amount of data from the database?
I have a stored proc that returns 7 data tables from a SQL Server in its resultset. It uses about 400 MB of bandwidth to bring the data to the client for processing.
The code to bring the data ...
- 61.1k
12
votes
1
answer
8k
views
Does INNER JOIN performance depends on order of tables?
A question suddenly came to my mind while I was tuning one stored procedure. Let me ask it -
I have two tables, table1 and table2. table1 contains huge data and table2 contains less data. Is there ...
- 2,955
5
votes
1
answer
395
views
Why is COUNT(DISTINCT fieldA) slower than COUNT(DISTINCT LTRIM(RTRIM(UPPER(fieldA))))?
I am new to execution plans in SQL Server 2005, but this mystifies me.
When I run this code ...
((SELECT COUNT(DISTINCT StudentID)
FROM vwStudentUnitSchedules AS v
WHERE v.UnitActive = 1
AND v....
- 87
2
votes
3
answers
835
views
Improve performance of stored procedure where only select query is used
In our environment one procedure is taking long time to execute. I have checked the procedure, and below is the summary -
The procedure contains only select block (around 24). Before each select we ...
- 2,955