Query Optimization [sorted]

Mailing List

Home

MySQL General - General MySQL discussion

MaxDB - Everything about MaxDB, formerly known as SAP DB

MySQL on Win32 - Runing MySQL on Windows 9x/Me/NT/2000/XP

Java Help - Mostly related to the MySQL Connector/J driver

ODBC - ODBC with the MySQL Connector/ODBC driver

Perl - Perl support for MySQL with DBI and DBD::mysql

MySQL++ - Programming with the C++ API to MySQL

Subjects

•	mysql openssl Question
•	mysql:it 's a db not a dbms how it 's possible?!
•	Does the binary log enabling affect the MySQL performances?
•	Strange behavior, Table Level Permission
•	FULLTEXT query format question
•	Preventing Duplicate Entries
•	Comparing and writing out BLOBS
•	Executing MySQL Commands From Within C Program
•	Can 't access mysql after kernel upgrade
•	Mysql 4 0 Oracle Stored Procedure Trigger Conversion
•	Downgrade Mysql from 4 to 3 23
•	MySQL Cluster Software
•	mysql test 4 1 fails with the gis test
•	ERROR 2002: Can 't connect to local MySQL server through socket
•	Getting Identity after INSERT
•	Update one field with more fields from another table
•	ERROR 1045: Access denied for user: 'root@localhost ' (Using password: NO)
•	mysql have same function mthod as Oracle decode()

Query Optimization [sorted]

Query Optimization [sorted]

2004-03-13 - By Kris Burford

Back

>I 'm trying to sort out a query that identifies images that are not in the
>story table (structures below). Peter Brawley has kindly pointed me in the
>right direction with the sql structure (which does work), but I 'm getting
>benchmarks of 5+ seconds on the test data, whereas the live site has 50x
>the number of rows and I 'm concerned about trying to go live with it.

Went back to the manual and realised that the table wasn 't properly
indexed. Makes a *big* difference!

Sorry to waste your time/bandwidth.

Kris

--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe: http://lists.mysql.com/mysql?unsub=mysql @(protected)