Tagged Questions
2
votes
1answer
52 views
MySQL-problem in Fetching Result set in Desired Format
I have 2 tables having the following columns
Person
------
person_id,
first_name,
middle_name,
last_name
Items
-----
person_item_id,
person_id,
item_type,
status,
ordered_date
The query is
...
0
votes
0answers
43 views
Mysql query is very slow
I am developing a website like any other social networking site using mysql.
I wish it give people suggestion to my users, and I have implemented this functionality in my application, but It is ...
0
votes
0answers
71 views
UPDATE / SELECT incredibly slow in MySQL InnoDB
I have 1 table with 2.5 billion records(2.5 Cr.) and I am trying to get count of records based on indexed column. it takes 115 seconds to execute same.
Query : Select count(1) from table1 where ...
0
votes
0answers
24 views
MySQL becomes unresponsive because user reached its OS quota
In CentOS 6.3/MySQL 5.1.67 I had an user that runs wordpress reaching its OS space quota (mostly files, the DB is less than 100Mb). When the user tried to create a post it triggered an [ERROR] ...
-4
votes
1answer
58 views
where can I get mysql-5.1.7.tar.gz or mysql-5.1.9.tar.gz? [closed]
I need mysql-5.1.7.tar.gz or mysql-5.1.9.tar.gz, but I can not find them anywhere, who can give me a link to find them, thank you very much!!!
1
vote
1answer
76 views
Is it okay to have different lower_case_table_names value on master and slave?
I have a OSX MySQL master with lower_case_table_names set to 2. I have just setup a Linux MySQL slave with lower_case_table_names=1.
I haven't started replication on the slave, but everything looks ...
0
votes
0answers
46 views
Returning multiple resultset from the same table
i am working with mysql procedure. final result set i have got in to one table.
now i need to return for each set i need to return the value.
example:
like this is contents in my the table.
i need ...
1
vote
2answers
56 views
Should master and slave have same mysql version?
I have a master database running mysql 5.5.11, and I am planning to setup a new slave. I am planning to use the 5.5.30 as it is the latest version. For setting up new slave, I am copying files from ...
0
votes
2answers
94 views
Autosync master and slave when master goes offline
I have a master slave setup using MySQL 5.0.
I have very frequent writes to the master and slave is used only for backup purpose (no explicit writes).
In my current configuration, the slave database ...
1
vote
1answer
127 views
Why would mysql “show global status” query be taking 15 minutes?
I'm reviewing the slow log, and on one of my slaves the average time for SHOW GLOBAL STATUS is 914s.
Any idea how to determine the cause of this?
1
vote
1answer
251 views
How soon after updating expire_logs_days param and restarting sql will old binlogs get deleted?
MySQL 5.1.x | InnoDB | Windows
My mysql data directory is starting to fill up with bin logs.
I currently have the following settings configured in my windows mysql server:
[mysqld]
log-bin
...
1
vote
1answer
217 views
Where is the MySQL variable - innodb_flush_method?
I would like to tweak the value of innodb_flush_method to find out its performance impact on a database server. That variable is listed when I run the command SHOW VARIABLES.
But I could not find it ...
0
votes
2answers
61 views
MySQL query slow even with indexes
Structure of my table
mysql> show create table t_group_tag_relation\G
*************************** 1. row ***************************
Table: t_group_tag_relation
Create Table: CREATE TABLE ...
1
vote
2answers
455 views
MySQL not responding, Writing to net status
I just had to reboot MySQL to regain access to some of my website. It had under 300MB of RAM used. Another product was working fine though, accessing it's own tables which are InnoDB.
Here's the show ...
1
vote
1answer
179 views
How to write signal function in MySQL that can be called from Triggers and Stored Functions?
In my Database I have a table: Employee with recursive association, an employee can be boss of other employee.
The Table Description:
mysql> DESC Employee;
...
1
vote
1answer
220 views
How to know the current log sequence number in 5.0.X
I would like to test the optimal value for iblog files on my mysql which is 5.0.77
I found the below procedure in mysqlperformance blog:
...
0
votes
0answers
107 views
how to improve performance of my query it was taking more than one hour in my environment
How can I improve performance of below query? It was running more than one hour to execute in my production environment. Query plan:
mysql> explain
SELECT transaction_detail.trans_id,
...
0
votes
1answer
63 views
How to removing or reduce the size of redo logs in MySQL cluster
Can anybody tell me that how can we reduce the redo log file size or can we remove the redo log file size in MySQL Cluster and also what will be the impact of it on performance of cluster.Also can we ...
1
vote
1answer
368 views
Retrieve double data type value in non exponential form
Is it possible to retrieve non-exponential value in double data type column? After the width of the column is increased to 15 it shows the values in exponential form.
Now I get the following:
...
2
votes
3answers
428 views
MySQL optimization - year column grouping - using temporary table, filesort
I have a transactions table which is having 600,000 records, I need to list the count for the dashboard on financial year basis. The table used is MyISAM. I tried adding index for the transaction date ...
0
votes
1answer
305 views
How can I enable my-huge file on windows server?
I installed Windows Server 2008 and MySQL 5.5.
Now I need configure MySQL for huge InnoDB tables and a lot of connections.
I see that on my Windows Server, there is a my-huge file(configs files that ...
1
vote
1answer
154 views
Mysql 5.0 on Windows 2008
I have a problem with MySQL on Windows Server 2008 x64.
This is the first time I've installed MySQL 5.5 with performance problems. I decided to go back to the older version that worked well with ...
1
vote
1answer
199 views
MySQL Master-Slave Replication Cross Database
I am setting up Replication for cross Database as i have set 2 variables in Slave' s my.cnf as replicate-do-db=database_name and
Replicate-wild-do-table=database_name.% ,But i am not able to get ...
2
votes
1answer
796 views
Change existing datadir path in mysql
I want to change the datadir path in the my.ini file.
The existing datadir path is C:/ProgramData/MySQL/MySQL Server 5.1/Data/
The size of my C: drive is 30GB and the MySQL data folder is occupying ...
1
vote
1answer
290 views
procedure is not executing
Problem I am getting when I execute this proc:
call `sp_frm4_px_prc_calc`();
Error Code : 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version ...
4
votes
1answer
777 views
Setting up MySQL Cluster on Two Systems
I am attempting to setup a MySQL Cluster.
I have the folllowing setup
one management node
two data nodes
another machine on which two more nodes reside
Below is the config.ini file:
[ndbd ...
2
votes
2answers
139 views
MySQL - How much physical space will be reduced by changing the column type?
Lets say I have the following table:
CREATE TABLE `my_table` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`user_id` int(11) NOT NULL,
`relationship_status` varchar(48) CHARACTER SET utf8 COLLATE ...
1
vote
1answer
800 views
How to log logon logoff and user activity on mySQL server for audit?
My boss wants to have some kind of log on the server running mysql which would log user activity.
Kind of like:
User blah logged in
User blah ran some query
User blah logedd off
User asdf ...
2
votes
2answers
87 views
How to see what was executed in the database via binlogs for specific date?
I am trying figure out how to "query" binlogs to see what was exectued in the database for a specific date. For example, if I execute mysqlbinlog binlog then the thing just runs forever and it is had ...
2
votes
1answer
233 views
query generate the information one column in two columns in one query
I have a question related with a query in sql. I have the next table:
id name
1 name1
2 country1
3 name2
4 country2
I need to call the results so:
...
