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Which is mysql table does OPTIMIZE TABLE work for?
OPTIMIZE TABLE works for InnoDB , MyISAM, and ARCHIVE tables. OPTIMIZE TABLE is also supported for dynamic columns of in-memory NDB tables. It does not work for fixed-width columns of in-memory tables, nor does it work for Disk Data tables.
Which is the best way to improve MySQL performance?
In general, it’s always better to use native MySQL performance enhancement over scripting and configuration files. These methods involve tweaking the MySQL configuration files, writing more efficient database queries, and structuring the database to retrieve data more efficiently.
Is it better to use native MySQL or performance tuning?
In general, it’s always better to use native MySQL performance enhancement over scripting and configuration files. SQL performance tuning is the process of maximizing query speeds on a relational database.
How to optimize fulltext Index in MySQL?
After doing substantial insert, update, or delete operations on columns that are part of a FULLTEXT index in an InnoDB table. Set the configuration option innodb_optimize_fulltext_only=1 first.
How to optimize the search index in MySQL?
Set the configuration option innodb_optimize_fulltext_only=1 first. To keep the index maintenance period to a reasonable time, set the innodb_ft_num_word_optimize option to specify how many words to update in the search index, and run a sequence of OPTIMIZE TABLE statements until the search index is fully updated.
How does OPTIMIZE TABLE work on an InnoDB table?
This is displayed in the output of OPTIMIZE TABLE when you run it on an InnoDB table, as shown here: OPTIMIZE TABLE uses online DDL for regular and partitioned InnoDB tables, which reduces downtime for concurrent DML operations. The table rebuild triggered by OPTIMIZE TABLE is completed in place.
How does the OPTIMIZE TABLE reduce downtime?
OPTIMIZE TABLE uses online DDL for regular and partitioned InnoDB tables, which reduces downtime for concurrent DML operations. The table rebuild triggered by OPTIMIZE TABLE is completed in place.
How to optimize table output column or table name?
OPTIMIZE TABLE Output Column Value Table The table name Op Always optimize Msg_type status, error , info, note, or warning Msg_text An informational message
How are deleted rows maintained in an OPTIMIZE TABLE?
Deleted rows are maintained in a linked list and subsequent INSERT operations reuse old row positions. You can use OPTIMIZE TABLE to reclaim the unused space and to defragment the data file.