MySQL version 5.6 - please also tag with mysql for search purposes.

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14
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2answers
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InnoDB: Error: Table “mysql”.“innodb_table_stats” not found after upgrade to mysql 5.6

I upgraded to mysql 5.6 from 5.5, and now my logs are littered with such messages on startup I found a possible solution here, but it does not seem official. ...
12
votes
5answers
22k views

Cannot open table mysql/innodb_index_stats [duplicate]

After a fresh install of XAMPP and import from my linux live db that is working to the windows Dev-stage, I started encountering problems with INSERT. Everything else seems to work well. The errors I ...
11
votes
3answers
663 views

MySQL instance stalling “doing SYNC index”

Problem An instance of MySQL 5.6.20 running (mostly just) a database with InnoDB tables is exhibiting occasional stalls for all update operations for the duration of 1-4 minutes with all INSERT, ...
11
votes
1answer
343 views

MySQL Commited data not seen to select query

Context: The framework used is Spring and all queries are run with JdbcTemplate. Mysql Server version is 5.6.19. The table is an InnoDB table and defaults like auto commit and isolation level ...
9
votes
3answers
8k views

Why query_cache_type is disabled by default start from MySQL 5.6?

We've upgraded to MySQL 5.6 and start seeing the loading of db server increased significantly, and finally found out the query_cache_type is defaulted to off start from 5.6. We enabled it again and ...
8
votes
5answers
310 views

How to update 10 million+ rows in MySQL single table as Fast as possible?

Using MySQL 5.6 with InnoDB storage engine for most of the tables. InnoDB buffer pool size is 15 GB and Innodb DB + indexes are around 10 GB. Server has 32GB RAM and is running Cent OS 7 x64. I have ...
7
votes
1answer
493 views

Issues with MySQL installation

First of all, excuse the length, this post is very long, and needs some background, second; it has been hard for me discerning the signal from the noise, please bear if some of this is not relevant: ...
6
votes
1answer
394 views

MySQL loading NULLs in numeric columns

MySQL 5.6.23, InnoDB I am loading tables from character delimited text files using the LOAD DATA INFILE commnd and I would like every field with a \N, which is the NULL character in this setting, to ...
6
votes
1answer
92 views

MySQL database design to sort and filter air traffic data

I am struggling to design the correct database / structure for what I'm trying to do. Let me try and explain the situation. Background We are a group of enthusiasts who monitor air traffic via ...
5
votes
3answers
842 views

How can I force MySQL to IGNORE ALL indexes?

I have read articles about FORCE index, but how can I force MySQL to IGNORE ALL indexes? I tried SELECT * FROM tbl IGNORE INDEX(*), but I was not successful. As for why I (and others) need to do ...
5
votes
1answer
573 views

Why does InnoDB table by default uses the UNIQUE constraint instead of the PRIMARY KEY?

In my MySQL database I have a table with 4 columns, the PRIMRAY KEY, two columns with a FOREIGN KEY CONSTRAINT and one UNIQUE index on all fields except for the PRIMARY KEY. The SHOW CREATE TABLE: ...
5
votes
1answer
2k views

Slower queries after upgrade from mysql-5.5 to mysql-5.6

There is lots written about how MySql 5.6 is faster than MySql 5.5 (e.g. http://dev.mysql.com/tech-resources/articles/mysql-5.6.html) but we upgraded our Amazon RDS instance (using the new upgrade ...
5
votes
1answer
4k views

Best way to create materialized view in mysql

I am using mysql 5.6, I am not being able to create materialized view here like oracle. I got one or two solution like flexview and all... Can anybody tell me best way to create materialized view in ...
5
votes
1answer
108 views

How can I copy the MySQL EXPLAIN result into a table?

I'd like to archive the results of a series of query EXPLAIN plans into a table for later analysis. I created a table that contains all the fields from an EXPLAIN result, but I can't figure out how ...
4
votes
2answers
56 views

MySQL for Oracle DBA

I am a newbie to MySQL, but understand Oracle databases well. I need a quick help to understand the architectural differences. Currently I am working on a Windows platform. 1) In Oracle we have to ...
4
votes
2answers
5k views

ERROR 1054 (42S22): Unknown column 'plugin' in 'mysql.user'

I am trying to grant privileges for a user to a new database mysql> grant all on db_test.* to 'user_test'@'localhost' identified by 'usersexistingpassword'; I get the following error ERROR 1054 ...
4
votes
3answers
148 views

MySQL Index Creation Internals

Right now there are two ways to build an index of a table in MySQL: Create the table structure first, then import the data and add indexes later. Create the table structure with indexes and then ...
4
votes
1answer
454 views

MySQL 1175 Error While Using Primary Keys

What would cause the error 1175 that starts out with: You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column.... The problem I have is that I did include ...
4
votes
1answer
5k views

How to do While Loops?

How can we use while loops in MySQL? My test script: BEGIN SELECT 0 INTO @n; WHILE @n < 10 DO SELECT @n; SET @n := @n +1; END WHILE; END; But it has syntax errors. I'm ...
4
votes
1answer
920 views

How to drop all scheduler events in MySQL 5.6?

In MySQL 5.6 is there a way to drop all scheduler events with an administrative command or do I have to go through them one by one with DROP EVENT [IF EXISTS] event_name?
4
votes
1answer
61 views

Running Triggers on Slave with Row-based Events in MySQL >=5.6

We would like to have a setup where a slave has triggers that are not present on the master for the purpose of updating some summary tables or run a specific udfs.sys If one uses statement-based ...
4
votes
2answers
2k views

What is default MySQL binlog retention in AWS RDS?

I tried to retrieve my MySQL RDS binlogs in order to run manual "rollback" for some SQLs. Unfortunately, I noticed that only 2 binlogs for the last 30 minutes are available. "call ...
3
votes
2answers
7k views

mysqldump --single-transaction, yet update queries are waiting for the backup

If I use mysqldump --single-transaction, according to the docs it should do flush tables with read lock to get a consistent state and then start a transaction and no writers should be waiting. ...
3
votes
1answer
4k views

MySQL service stops after trying to grant privileges to a user

I am using MySQL 5.6, I was trying to create a super user for specific database but I got ERROR 1396 (HY000): Operation CREATE USER failed for 'superuser'@'%' Then I thought maybe there is already ...
3
votes
2answers
1k views

Can I move the undo log outside of ibdata1 in MySQL 5.6 on an existing server?

I've been growing concerned about the large size of ibdata1 that can never shrink even when using file-per-table on innodb Moving the undo log files outside seemed logical but this procedure seems ...
3
votes
1answer
556 views

Why didn't MySQL keep the innodb_file_format after loading a mysqldump

I was loading a mysql dump today when I ran into ERROR 1118 (42000) at line 279: Row size too large (> 8126) Which I thought was weird because I know I had turned on row compression and was ...
3
votes
1answer
398 views

“Set Password” with a limited user

I'm using MySQL 5.6. I want to have a limited service-user which is able to create/modify the users of my databases. Now my problem is that I can quite figure out what privileges my service-user ...
3
votes
1answer
25 views

Data truncated for column - return fatal error

I get this error in my error log. Warning: 1265 Data truncated for column ... How to configure mysql to return a fatal error on this kind of warnings? Mysql 5.6.27 cnf sql_mode ...
3
votes
2answers
119 views

SQL Question: Selecting different language versions based on availability

I have the following situation: I have a table that contains entries with language versions (German and English) as part of the key (the other part being a "name" field). However, not always both ...
3
votes
2answers
31 views

How to handle temporal datatype columns when doing upgrade from 5.5 to 5.6

I want to upgrade my MySQL 5.5.40 server to 5.6.28. But as per the documentation we need to alter the tables having columns which are using date or datetime or timestamp data types as storage ...
3
votes
1answer
931 views

Is it mandatory to enable --log_slave_updates with MySQL Replication using GTID? [duplicate]

I'm setting up 5.6 Percona Mysql, in order to enable GTID should I have to enable log_slave_update on both Master and Slave ? If I should enable log_slave_update, then I'm counting this to CONS for ...
3
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3answers
2k views

Amazon RDS - and binary log rotation

New to RDS (used to having my own server in my own data center). We are on MySQL 5.6 on RDS. when a slave gets behind in replication lag, the master ceases to rotate out its binary logs. It is, ...
3
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1answer
381 views

How to upgrade MySQL (5.5) production DB to 5.6 with minimal downtime

Our existing Database size around 200GB. We want to use consistent, parallel backups methods. For testing, I migrated my Development DB from 5.5 to 5.6 by running mysqldump with option ...
3
votes
2answers
1k views

MySQL version confusion

How is this possible: I installed mysql-5.6.11-osx10.7-x86.dmg which is supposed to be version Mac OS X ver. 10.7 (x86, 32-bit), DMG Archive (32 bit!) But upon SHOW VARIABLES LIKE "%version%"; I get ...
3
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0answers
80 views

Create an SSL connection with ODBC driver to MySQL(5.6) using openSSL

I want to create an asymmetric SSL connection from MySQL to an ODBC driver but don't fully know how to generate the keys and certificates (I'm using openSSL as recommended here: ...
3
votes
2answers
177 views

Any way to speed up reorganize partition of a very large table in MySQL?

So we have this massive 1.5TB+ table with billions of records that has been neglected for the past few months and needs to have new partitions added. The partitions are based off a timestamp which are ...
3
votes
3answers
1k views

How can I make MySQL client read password from mylogin.cnf?

I'm trying to make the mysql client connect to a mysql server without requiring the password to be given interactively. Steps taken: 1) First create a mylogin.cnf file $ mysql_config_editor set ...
3
votes
1answer
123 views

query optimization of a left join

I have the following query written into the slow log (mysql-slow.log). I don't have much idea how to optimize this query. I already have indexes for: mode, f.user_id... etc but doesn't seem to ...
2
votes
2answers
278 views

Changing ORDER BY direction causes performance issue

I use MySQL 5.6, and I have two tables each with 16M rows: CREATE TABLE IF NOT EXISTS `newsstudios` ( `id` int(11) NOT NULL AUTO_INCREMENT, `title` varchar(255) COLLATE utf8_unicode_ci NOT NULL, ...
2
votes
2answers
4k views

Master - Master replication Duplicate entry

I've got a Master - Master replication setup and it worked fine for a couple of days but I keep getting: Duplicate entry errors after a few days... My setup is as follow: One server in The ...
2
votes
3answers
425 views

Does MySQL 5.6 support fan-in replication?

I've known for quite awhile that Continuent's Tungsten Replicator supports fan-in replication (example). By fan-in replication I mean combining multiple datasources into a single instance (like a ...
2
votes
2answers
82 views

Query with WHERE NOT and NOT IN with subquery

MySQL Version: 5.6.27 I am using the following two tables TABLE: oc_product product_id int(11) model varchar(64) tax_class_id int(11) and TABLE: oc_product_to_category ...
2
votes
2answers
23 views

Insert query in mysql

I am using MySQL. I have table like below: CREATE TABLE test_table ( first_name VARCHAR(20), last_name VARCHAR(20), full_name VARCHAR(40) ); Now I want to insert values like below: ...
2
votes
3answers
136 views

Updating/Inserting 2000 entries takes over 12 hours to complete

I have three tables of around 10 million rows each in MySQL on Amazon RDS and I am finding the insert/update performance to be VERY slow. Each table contains unrelated data. Each table is regularly ...
2
votes
1answer
53 views

Optimizing a 3 table join query

SELECT job.id_job, job.fk_company, job.fk_user, job.fk_job_category, job.fk_job_type, job.fk_place, job.job_identifier, job.external_job_id, job.title, job.short_description, job.status, ...
2
votes
3answers
3k views

SQL Error (2027): Malformed packet

I have a mysql database (Version 5.6.23-log running on windows) that is set up for use with Teamcity. When running a command against it using HeidiSQL I am getting an error: SQL Error (2027): ...
2
votes
3answers
201 views

Query 'optimizing' state is taking too long

I have a MySQL 5.6 on Amazon RDS that I'm using for testing some data archiving scripts. I'm removing oldest data based on a "updated_date" column and index. Curiously, after removing a few million ...
2
votes
1answer
6k views

Any known issues upgrading from MySQL 5.1.73 to 5.6.21?

I am planning my MySQL DB ver5.1.73 running on a CentOS 6.5 machine to MySQL 5.6.21. I understand the basic procedure for this based on what I have read on StackOverflow, but I was curious if anyone ...
2
votes
2answers
243 views

MySQL 5.5 to 5.6 Upgrade. Will data remain the same?

We are considering to upgrade to MySQL 5.6 this summer. I would like to know if our data will be changed in any way once we perform the upgrade? I've been reading and I found that mysql_upgrade ...
2
votes
2answers
530 views

Can anyone offer an opinion on handlersocket vs memcached performance in MySQL 5.6

I must say I was a little mis(un)-informed about the MySQL Memcached plugin which offers the same NoSQL like access to InnoDB tables as HandlerSocket, I had only had experience with entirely ...