it is possible to stop a stored procedures in MySQL? Put a procedures to feed a database table for load testing with 10 million records , but the insertion is too slow and want to stop the same without having to stop the server ( there are other applications running on it ) .
try to establish a new connection to the database. If you have made the call via PHPMyAdmin procedures will need to use another browser, or close the current completely before trying to enter the database again because the server recognizes that you are still "waiting" to receive the answer to your request.
Run the SHOW PROCESSLIST command to see the process. find your Stored procedures that running and use KILL command. Example:
SHOW PROCESSLIST; - Will list various processes, see your procedures
KILL 749; - Instead of the 749 set the process ID.
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I am very new to mysql and I have I a situation where I need to update all my stored procedure in all my database. for example I have 10 database just say:
client_1,client_2,client_3,.....client_10.
Every database have same stored procedure just say:
proc_1,proc_2,proc_3,proc_4.
So if I made any changes to one of my stored procedure then it should get updated in all other database So that I don't have to do it manually.
I know the similar question have been asked but I am looking for some different approach. So what I want is some kind of mysql query or something like that in which we will pass the name of the database like:
client_1, client_3, client_8
and changes will only made to this databases.
I am using heidiSql- 10.2 with MySQL 5.6.
Thanks.
I am not entirely sure what you are wanting to do but I think you want something like this. First save the definition of your stored procedure to a file. Make sure it doesn't contain an schema references like client1.tableA. You want it to be able to run in any copy of your schema correctly. Be sure to follow the syntax rules defined by MySQL
Defining Stored Programs
Then once the stored procedure is saved you can use the mysql command line to run it for each client you want to update.
You would first connect to the database server using the mysql command line. Then issue a USE command to activate the first client database. Then run the script using the SOURCE command. See MySQL Batch Commands Then repeat for each client.
USE client1;
source c:\temp\storedProcedure.sql
USE client2;
source c:\temp\storedProcedure.sql
If this is not exactly what you needed hopefully it gives you some ideas to get you what you need.
Note that you could do the connection to the database and execute these commands via batch file instead of manually if you wanted to.
There are no statements in MySQL that create/drop/alter multiple procedures at once. You can only change one procedure at a time.
You can write an SQL script that includes a series of statements. But it's up to you to write that script.
You may write some script in Python (or other favorite language) that outputs the SQL script.
I don't know HeidiSQL, but I doubt it has any facility to apply the same change to many procedures. Nor does any other MySQL client that I'm aware of.
I have 2 (th and ct) servers that are completely separated each with it's own database I want to sync a table(et) in th with ct
I want if new inserts are done in table th a trigger will fire a ssh connection to ct server and insert the new rows I think the script should look something like the following but I can't figure out the syntax
DROP TRIGGER IF EXISTS et-sync
CREATE TRIGGER et-sync AFTER INSERT ON th.et
FOR EACH ROW BEGIN
ssh user#11.11.2.11 "mysql -uroot -ppassword -e \"INSERT db_testplus.user SET t = NEW.t;""
END;
and should I use this or just use Percona Toolkit for MySQL
(pt-table-sync) as I don't think adding a tool to control database sync at that scale is worth it(added complexity)
I know that adding replicas is properly the best solution but considering the current system design I thought of postponing the redesign of ct database for some time as it will take sometime to make it from scratch and it's an important part for the business
any suggestions ??
For security reasons, MySQL does not allow launching processes from within itself.
Usually the alternative is to make a cron job to do orchestrate the actions, reaching into the database as needed to communicate and coordinate.
I am working on an SSIS ETL and I wanna know if there is a possibility to execute a MySQL Stored Procedure.
Here is what I want to do : From an SQL Server Database, I want to get Information by an ETL (SSIS) and send them to a MySQL Database (by a stored procedure)
Here is what I have done so far : I get my data from SQL Server Database and tranform them.
Here where I am stuck : I don't know how to execute an existing stored procedure on the MySQL Server Database (my destination)
Here is my ETL (DATA FLOW) diagram :
I also add an OLEDB provider on the server and add my destination source (MySQL Database) but I don't know what I need to do in my ETL to execute the stored procedure.
I can provide more information if necessary.
Thanks in advance
I am not sure if you mean that you want to execute a stored procedure by passing in every row in memory in SSIS that enters through your multicast. If that is the case, that may be possible with SSIS, but I have never done it.
why not just send the rows to two separate tables in MySQL from the multicast, then go back to the control flow tab and add two execute sql tasks, one for each stored procedure. Change each stored procedure to run on the tables instead of individual rows.
You would probably get a performance boost as well from switching to a set based operation instead of row by row.
I'm not an expert but I do have a web front processing orders that have data needing to be input for further logins. Instead of using that database, I created another one with an extra column called status. Initially when orders are processed, they are set to 0. The cron job runs every 3 minutes polling this database for all users with status 0. When run, the cron sets the status of all currently processed users to status 1 (so if there are any that do get input during runtime of the script, it will be processed next time which is only 3 minutes).
After the status of all new users is set to 1, just the password and email fields are dumped to a file and then loaded via "LOAD DATA INFILE" back into the real database that users need to log in with their client. there is no web log in form. It is for emails, just using the IMAP client. However, I do use the root account for the cron since I realized I needed to grant all privs to a user for the dumping of data and if that is going to be it, I might as well just use root to update the status column first, then dump the new data to a file, then load it into the new db and go back and delete all users with status 1. It is a simple 4 line script running mysql from the command line.
Is this a safe bet or am I risking something running a root cron every 3 min? I don't see how I can possibly have an issue since I never use root to process the web stuff. I use a separate mysql user with only INSERT privs for the web front to process new orders. Any comments? I feel like this way I can avoid sql injection even though my mysql user still has limited privs, there always might be something I don't know about.
Is this a safe bet or am I risking something
As long as it's simple LOAD DATA INFILE query - no. However,
Instead of using that database, I created another one with an extra column called status.
Such a flying circus is absolutely unnecessary.
It doesn't protect you from injection anyway.
Instead, you have to use prepared statements for ALL the queries in your application.
I have a stored procedure which I want to test for speed in a production environment. So I created a new stored procedure which calls this for a 100 times, each time with different parameters.
My question is: how can I disable the output that the MySQL command line prints as I am sure that this adds to the total time.
So, to recap, from the MySQL command line I would like to perform something like the following:
MySQL> call cbtest;
and I want it to display just the total time taken to run the 100 test sp calls (wrapped in cbtest) rather than show me the results returned for each call.
Thanks in advance,
Tim
How something like on the command line:
$ time echo "call cbtest" | mysql -uuser -ppassword database
Keep in mind that MySQL will probably cache your stored proc, so this might not give you a real good feel of performance.