Showing posts with label MySQL. Show all posts
Showing posts with label MySQL. Show all posts

Wednesday, November 21, 2012

Tuesday, January 24, 2012

O'Reilly Media book: MySQL Troubleshooting

MySQL Troubleshooting:
Sometimes applications can go mad: tables contain wrong data, users get random replies, server stop working, and so on. Several easy methods allow users to often find the problems quickly. This book, based on successful conference presentations by the author, cover SQL problems, memory and other server problems, replication, and problems related to particular storage engines.

Saturday, September 17, 2011

Oracle adds commercial extensions to MySQL - The H Open Source: News and Features

Oracle adds commercial extensions to MySQL - The H Open Source: News and Features: New extensions for MySQL improve performance, scalability, availability and authentication, but will only be part of the commercial Enterprise Edition

Tuesday, July 19, 2011

SQL: Limiting the Number of Rows Returned

SQL Cookbook - O'Reilly Media

Chapter 1 Retrieving Records: Limiting the Number of Rows Returned.


Problem

You want to limit the number of rows returned in your query. You are not concerned with the order; any n rows will do.


Solution

Use the built-in function provided by your database to control the number of rows returned.


DB2



MySQL and PostgreSQL

Do the same thing in MySQL and PostgreSQL using LIMIT:
select * from emp limit 5
Oracle



SQL Server


Discussion

Tuesday, July 12, 2011

how to connect iReport to the database, that comes with a JasperServer (installation)?

This is the JDBC-URL (replace "JASPERSERVER" appropriately!):


jdbc:mysql://JASPERSERVER/sugarcrm


And the default credentials are: jasperdb/password.

Next issue: dealing with "repo:", a reference to the resource repository on the JasperServer …