Search:     Advanced search
Browse by category:
Glossary | Contact Us
Database Knowledge Base / MySQL / Can I print out a variable value in a SP for debugging?

Can I print out a variable value in a SP for debugging?
Print
Email to friend
Add comment
Views: 106
Votes: 1
Comments: 0

Yes, if you do an ordinary SELECT inside a stored procedure or function, the result set is returned directly to the client. You will need to use the MySQL 4.1 client-server protocol for this to work. This means that, for instance in PHP, you need to use the mysqli extension rather than the old mysql extension.

Others in this Category
document If the entire data dir is backuped daily, is restoring a database just a matter of dumping the database from tape back to the data dir?
document what is Maximum size of a query in mysql?
document Can MySQL 5.0 do subqueries?
document Can MySQL 5.0 do multi-table inserts and updates?
document Does MySQL 5.0 have a Query Cache? Does it work on Server, Instance or Database?
document Does MySQL 5.0 have Sequences?
document Does MySQL 5.0 have a NOW() with fractions of seconds?
document Does MySQL 5.0 work with Dual Core Opterons?
document Is there a "MyISAM Hot-Backup" like the "InnoDB Hot-Backup"?
document Is there any improvement in error reporting when Foreign Key fails (i.e. currently does not report which column and reference failed)?
document Can MySQL 5.0 do ACID Transactions?
document What are the new Storage Engines in MySQL 5.0?
document What are the unique benefits of the ARCHIVE Storage Engine?
document Do the new features in MySQL 5.0 apply to all the Storage Engines?
document What is "Server SQL Mode"?
document How many modes are there in "Server SQL Mode"?
document How do you configure "Server SQL Mode"?
document Is the mode dependent on the Database or the Connection?
document Can "Strict Mode" rules be extended?
document Does "Strict Mode" impact performance?
document What is the default mode when MySQL 5.0 is installed?
document Where can I find documentation for MySQL Stored Procedures?
document Where is the discussion forum for MySQL Stored Procedures?
document Where can I find the ANSI SQL 2003 specification for Stored Procedures?
document How do you manage Stored Procedures?
document Is there a way to view all Stored Procedures in a database?
document Where are Stored Procedures stored?
document Is it possible to group SPs into a package (e.g. like Oracle)?
document Can a SP call another SP?
document Can a SP call a Trigger?
document Can SPs access a single Table? Multiple Tables?
document Do SPs have a "raise" statement to "raise application errors"?
document Do SPs have Exception Handling?
document Can SPs return result sets (as do MS SQL and Sybase)?
document Oracle uses mod_plsql as a gateway on Apache to talk directly to a SP in the database. What is the MySQL equivalent?
document Can I pass an array as input to a SP?
document Can I pass a cursor as an IN parameter to a SP?
document Can I return a cursor as an OUT parameter from a SP?
document Where can I find documentation for MySQL Triggers?
document Where is the discussion forum for MySQL Triggers?
document Do you have Statement-level Triggers or Row-level Triggers?
document Does MySQL 5.0 have built-in Roles Based Access Control (RBAC)?
document Does MySQL 5.0 have built-in Authentication against LDAP directories?
document Will the SSL Support be built into the MySQL Binaries or will it require a recompile?
document Does MySQL 5.0 have native support for SSL?
document Have the Table Types changed from MySQL 4.x to 5.0?
document How do you migrate from MySQL 4.x to 5.0?
document Does MySQL 5.0 include a disk-based MySQL Cluster?
document Does MySQL 5.0 work with MySQL Cluster?
document When will mysqldump actually dump the definitions of SPs, Triggers, and Functions?
document When will Backup/Restore and mysqldump work with SPs?
document How does PostgreSQL compare to other DBMSs?
document what this error does mean at 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'
document What is Data Mapping
document What is an Ad Hoc Query?


RSS
Powered by DBNest.com (Nest of DB Professionals)