A select query over a large table runs very slow because of
the growing number of entries in that table. What different
measures could be taken to improve speed?

Answer Posted / jd

This question cannot be answered with the way it is formulated.

One has to run a trace to figure out why the select is slow.
it could be a lack of index, it could be bad storage
parameters, it could be that the select itself is written
poorly.

Too many problem can be described by this symptom.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How to enter binary numbers in sql statements?

507


How do I uninstall mysql connector?

466


What is the difference between mysql and oracle?

532


How to control the max size of a heap table?

546


Can you tell what are various ways to create an index?

456






Differentiate CHAR_LENGTH and LENGTH?

572


What is not null in mysql?

507


What is blob and text in mysql?

603


What is indexing in mysql?

453


In which language it is written?

515


How many sql ddl commands are supported by 'mysql'?

578


What is the date format in mysql?

448


Explain the storage engines in mysql?

520


What are triggers in mysql?

485


What causes mysql too many connections?

471