INSERT AfTER LEFT JOIN creates duplicate records (3 replies)
Below is the stored procedure running at work hours every day. The purpose is to add new and update records from SBT to so_detail. INSERT INTO so_detail (so_num, cust_num, part_num, descrip, disc,...
View ArticleMySQL HA: InnoDB clusters (no replies)
MySQL HA: InnoDB clusters - http://mysqlserverteam.com/introducing-mysql-innodb-cluster-demo-video/ -...
View ArticleHow to track page splits (2 replies)
Is there a way to track the number of page splits on an InnoDB table? I've inherited a couple high-volume tables with integer primary keys in which values are often inserted out of order and I'd like...
View ArticleExtract table data from an ibdata file (no replies)
Hi. I run a community 5.5 Version With SqlYog Control Panel. I need to access a table in a month_old backup. I have restored the ibdta, logfiles and .frm. Is it a way to make a Connection to extract a...
View ArticleI/O on checkpoints (no replies)
Hello, I am trying to understand the I/O performed by Innodb. Concretely, i would like to understand how checkpoints are performed at the file system level, i.e, how checkpoints start and how end. I...
View ArticleShould ORDER BY SELECTs to to avoid deadlocks? (no replies)
I start a transaction. I read some rows with SELECTs. Then I do modifications (UPDATE/INSERT/DELETE) related with these rows which I've read. I commit. MySQL docs say that it is better to have...
View ArticleGrowth of .ibd and .ibdata files (2 replies)
Hello, I am catching all the disk I/O system calls performed by innodb in the data directory. Seems that Innodb grows the .idb and .ibdata files by writing 1 byte each 512 bytes, and then fills up...
View ArticleRepositories of large mysql schemas (no replies)
I am looking for schemas which have large number of tables. Is there a schemas repositories which you are aware of ? large = > 200
View ArticleMaximum Transaction Timeout (no replies)
I've got a problem with an InnoDB database and I'm not really sure what setting to adjust to fix it. The problem I'm having is connections come in and start a transaction. Before the commit is issued...
View ArticleService (Windows) keeps crashing on Export (8 replies)
I have added a database folder (QRDevices) to the Data folder and then ran a Refresh im Workbench. I now see the database listed. I believe I need to rebuild the InnoDB tables or whatever and...
View ArticleCreating non-locking temporary tables (1 reply)
Hi there! I am having an issues with temporary tables that I was curious if anyone else had encountered before. In our environment, we have slave servers that we are utilizing for the purposes of...
View Article#1036 - Table 'gain' is read only (11 replies)
It started that I had a power outage longer than my UPS could hold, ... After that MySQL on my Ubuntu server could not start anymore. I added into /etc/my.cnf the two lines: [mysqld]...
View ArticleExclusive lock (1 reply)
Hi Everybody, I have a mysql error and I didn't find the answer till now on the internet: "Wait on a lock was aborted due to a pending exclusive lock" I have a lot of transaction in the same time....
View ArticleDenormalization to allow use UNQIUE index? (6 replies)
Post has many Comment. Post contain issue_id field and Comment contains comment_id field. The request to create a comment with (issue_id, comment_id) which already exists in the DB should be ignored....
View ArticleQuery Replacement (1 reply)
Hi, Anyone can help on how to replace some word in select statement. TextFile abc@abc.com test@testmail.com check@mycompany.com choice@yourcompany.com etc... OutputFile abc@abc.com test@abc.com...
View ArticleFast Update (2 replies)
Hi, Anyone can help for fast update? The update statement below take 4hours for 65k records. update exclusive a set a.deleted_date=now() where...
View ArticleFast Insert Where Not Exist (4 replies)
Hi, Anyone can help on how this insert where not exist faster, currently the sql statement below working but it takes 1hour 42minutes for 65k records. INSERT INTO exclusive...
View ArticleIssue on UPSERT when concurrency is high (no replies)
Hello All, We are using apache storm application for message processing. The messages are parsed and inserted/updated on MySQL 5.7.16 which is installed on a Linux machine. We are trying to replicate...
View ArticleDeleted data automatically recovered (no replies)
i have a table for store devices data. And now i need to delete all/truncate this table. I tried to remove one by one, but deleted data inserts in the and with new ID. i tried "Delete *" , "Truncate...
View ArticleGeneral Tablespaces (no replies)
hi, where store innodb user data ? In general tablespaces or system tablespace ?
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