Mysql show stats

For SHOW STATUS , a LIKE clause, if present, indicates which variable names to match. A WHERE clause can be given to select rows using more general conditions, as discussed in Section 24. Extensions to SHOW Statements”.

Learn how to use SHOW STATUS to find the statistics you need. With a GLOBAL modifier, the statement displays the global status values.

For MyISAM , Data_length is the length of the data file, in bytes. For InnoDB, Data_length is the approximate amount of memory allocated for the clustered index, in bytes. Specifically, it is the clustered index size, in pages, multiplied by the InnoDB page size.

CARDINALITY is counted based on statistics stored as integers, so the value is not necessarily exact even for small tables. How can I rebuild indexes and update stats in. However, note that this query shows all of the columns from the mysql. By using the SHOW MASTER STATUS or SHOW SLAVE STATUS will help us to check or view the database replication status either on the master or slave server.

Connect to the database that you want to show the stored functions.

Open the Functions menu, you will see a list of functions which belong to the database. User Statistics feature. SHOW TABLE_STATISTICS Description. It was removed as a separate statement in MariaDB 10. SHOW information_schema_table statement.

To date ( mysql .18) there is no suitable function inside mysql to re-create indexes. The information_schema. This statement is similar to SHOW PROCEDURE CODE but for stored functions. Information returned includes the version, connection type, socket file location, uptime and some other stats. Because it is the slave that drives the replication process, very little information is available in this report.

MySQL : SHOW FUNCTION CODE. SHOW INNODB STATUS is the old statement but still works. Event_Scheduler either with ON or 1. Also, note the quotes are used for querying, but not for setting the variable. A little mysql weirdness for you.

If you see a lot of values, the reason is probably that you have used SHOW STATUS with a new connection instead of SHOW GLOBAL STATUS. Some status variables have only a global value.

For these, you get the same value for both GLOBAL and SESSION. To get the database server status run this query in either the SQL window of your preferred interface (PHPMyAdmin or other) or on the MySQL CLI interface. Summary: in this tutorial, you will learn how to query index information from a table by using the MySQL SHOW INDEXES command. Understanding real-time performance statistics in MySQL. There is no difference between Show status and Show global status, earlier in v5.

My application depends on running show columns for certain tables. It takes about 60ms to run, whereas all our other queries take under a ms. Querying information_schema directly is even slower. MySQL Workbench includes various tools for both DBAs and Developers related to viewing and improving performance. In MySQL , you can use the SHOW GRANTS command to display all grant information for a user.

This would display privileges that were assigned to the user using the GRANT command.