Category "innodb"

Is InnoDB index constructed in cache or disk?

I'm trying to understand InnoDB indices, but have some confusion. Are InnoDB indices (Clustered and Secondary) constructed only in cache or constructed in disk

PHP - Check if string contains words longer than 4 characters, then include "+ *", and for those shorter than 4 characters include only "*"

I manage to do partially just one part, but cannot make the second part work. If a word has < 4 characters, only * should be included at the end of that wo

MariaDB: Unknown data type "MYSQL_JSON"

According to MariaDB's website, you can simply replace MySQL with MariaDB. Great, I thought, however after installing MariaDB (10.5.7), some of my InnoDB tables

ERROR: Unable to start Group Replication 3096 (HY000) Can't add nodes to cluster INNODB

Setup: [All machines (4) are connected on LAN, updated, upgraded and they see themselves and work fine.] I've installed mysql in all 4, I created a cluster b

What are MySQL InnoDB intention locks used for?

I have read the MySQL mannual about intention lock: http://dev.mysql.com/doc/refman/5.5/en/innodb-locking.html#innodb-intention-locks It says that "To m

Save lat & lng values into point field in mysql

I have a table with fields latitude and longitude stored as float values, and I want to start saving them into points in a new column to use spatial features. C

How is it possible for InnoDB to deadlock on a single row?

According to The Good Word, InnoDB uses automatic row-level locking. You can get deadlocks even in the case of transactions that just insert or delete a sin

MariaDB Import maximum key length

We are currently moving the DB to another Server but we got a problem. Our Database is quite big and when we want to Import it to our new MariaDB Server with Ph