OurSQL Episode 22: Things To Avoid With MySQL Queries

Feature:

Things to Avoid in Queries
Subqueries and Correlated subqueries
http://dev.mysql.com/doc/refman/4.1/en/correlated-subqueries.html

Jan Kneschke’s post on Groupwise Maximum:
http://jan.kneschke.de/projects/mysql/groupwise-max

Calculated comparisons do not use indexes

INSERT IGNORE
REPLACE
INSERT…ON DUPLICATE KEY

Feedback:

Email podcast@technocation.org

call the comment line at +1 617-674-2369

use Odeo to leave a voice mail through your computer:
http://odeo.com/sendmeamessage/Sheeri

or use the Technocation forums:
http://technocation.org/forum

Direct play this episode at:
http://technocation.org/content/oursql-episode-22%3A-things-avoid-mysql-queries

Feature:

Things to Avoid in Queries
Subqueries and Correlated subqueries
http://dev.mysql.com/doc/refman/4.1/en/correlated-subqueries.html

Jan Kneschke’s post on Groupwise Maximum:
http://jan.kneschke.de/projects/mysql/groupwise-max

Calculated comparisons do not use indexes

INSERT IGNORE
REPLACE
INSERT…ON DUPLICATE KEY

Feedback:

Email podcast@technocation.org

call the comment line at +1 617-674-2369

use Odeo to leave a voice mail through your computer:
http://odeo.com/sendmeamessage/Sheeri

or use the Technocation forums:
http://technocation.org/forum

Direct play this episode at:
http://technocation.org/content/oursql-episode-22%3A-things-avoid-mysql-queries

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