How to improve the performance of the query?
Let’s learn how to improve the performance of the query. The most accurate or helpful solution is served by Stack Overflow.
There are ten answers to this question.
Best solution
I have a lot of records in table. When I execute the following query it takes a lot of time. How can I improve the performance? SET ROWCOUNT 10 SELECT StxnID ,Sprovider.description as SProvider ,txnID ,Request ,Raw ,Status ,txnBal ,Stxn.CreatedBy ,Stxn.CreatedOn ,Stxn.ModifiedBy ,Stxn.ModifiedOn ,Stxn.isDeleted FROM Stxn,Sprovider WHERE Stxn.SproviderID = SProvider.Sproviderid AND Stxn.SProviderid = ISNULL(@pSProviderID,Stxn.SProviderid) AND Stxn.status = ISNULL(@pStatus,Stxn.status) AND Stxn.CreatedOn...
Answer:
This is my go-to article when I'm trying to do a search query that has several search conditions which...
cpsinghal at Stack Overflow Mark as irrelevant Undo
Other solutions
This question stemmed from Google's Dremel paper but I thought I'd post it for Impala since there's a lot of interest in the open source community. The paper mentions two core architecture decisions to improving query execution speed: 1) A column storage...
Answer:
1) What exactly is a multi-level execution tree and how do they help with performance enhancement as...
Todd Lipcon at Quora Mark as irrelevant Undo
Answer:
SQL Developer will, by default, only fetch the first 100 rows of a query, then pause. To get the entire...
Raad Al-Rawi at Quora Mark as irrelevant Undo
I need some answers related to performance . I made a lot of web applications with low traffic . Now , I need to do one little demanding , it is a prototype for an early stage startup project . Web applications need to serve dynamically generated html...
Bharat Maheshwari at Quora Mark as irrelevant Undo
I have a ec2 machine as hive server with one namenode and two data node. I also set <property><name>mapred.tasktracker.reduce.tasks.maximum</name><value>15</value></property> but while executing a simple...
Answer:
The performance depends on many variables not only reducers. Importantly, if your query does use ORDER...
Christian Prokopp at Quora Mark as irrelevant Undo
Databases: is it better to spend money on faster disk I/O or partitioned tables? Which has more influence on the speed of a SELECT query? The company I'm contracted to uses SQL Server 2008 R2 on a virtual server hosted by a data center. It's an OLTP...
Answer:
Benchmarking your I/O subsystem is always advisable to get you a baseline for performance tweeks that...
Ritchie at Ask.Metafilter.Com Mark as irrelevant Undo
Help me improve my PHP and MySQL skills with useful resources on the web. I've taught myself a fair amount of MySQL and PHP, but now I'm getting more advanced I'm needing guidance beyond my Googling abilities to advance my general knowledge. I'm looking...
Answer:
Recommendation #1: forget MySQL and PHP. No, I'm not suggesting taking up another RDBMS and another...
MetaMonkey at Ask.Metafilter.Com Mark as irrelevant Undo
A table present in Oracle database which will be having information about flights. According to the functionality of the table, only possibility of having primary key is by keeping all the columns as a primary key. Because it may contain duplicate values...
Answer:
You should always have a primary key in a table. In that case, I would never use 10 columns, but instead...
Erik Laliberte at Quora Mark as irrelevant Undo
How to improve brain performance? I'm trying to put together a list of all proven methods of improving cognitive and memory performance, but I'm finding myself wading through a lot of unrelated journal articles, etc. I was hoping the hive mind could...
Answer:
There's a book called Brain Rules, by Dr. John Medina, a developmental molecular biologist. He has ...
blahtsk at Ask.Metafilter.Com Mark as irrelevant Undo
Hi there, i just wanted to know how to improve brain performance and memory including both short term and long term memory. I have been walking, power walking, jogging and sprinting, i know it can improve brain performance by bringing in more blood and...
Yahoo! Answers Mark as irrelevant Undo
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