The use of the MySQL Show command

Show tables or show tables from database_name; Displays the names of all tables in the current database

show databases; Displays the names of all databases in MySQL

Show columns from table_name to database_name; or show columns from Database_name.table_name; Display column names in a table

Show grants for [email protected]; Displays the permissions of a user, displaying results similar to the grant command

Show index from TABLE_NAME; Index of the display table

Show status; Displays information about some system-specific resources, such as the number of threads that are running

Command: Show status like '% under variable% ';

Aborted_clients the number of connections that have been discarded because the client did not properly close the connection already dead.
Aborted_connects the number of times the connection to the MySQL server has failed.
Connections the number of attempts to connect to the MySQL server.
Created_tmp_tables the number of suppressed temporary tables that have been created when the statement is executed.
Delayed_insert_threads the number of deferred plug-in processor threads being used.
Delayed_writes the number of rows written with the insert Delayed.
Delayed_errors the number of rows written with insert Delayed for some errors (possibly repeating key values).
Flush_commands the number of times the flush command was executed.
Handler_delete the number of times a row was requested to be deleted from a table.
The number of times the Handler_read_first request reads the first row in the table.
The Handler_read_key requests a number based on the key read line.
The number of times a handler_read_next request reads into a row based on one key.
The number of times a HANDLER_READ_RND request reads into a row based on a fixed position.
Handler_update the number of times a row in the table was requested to be updated.
The number of times the Handler_write request inserts a row into the table.
key_blocks_used the number of blocks used for the keyword cache.
Key_read_requests the number of times a key value was requested to be read from the cache.
Key_reads the number of times a key value has been physically read from disk.
Key_write_requests requests a keyword block to be written to the cache count.
Key_writes the number of times a key-value block is physically written to disk.
Max_used_connections the maximum number of connections that are used at the same time.
Not_flushed_key_blocks a key block that has been changed in the key cache but has not been emptied to disk.
Not_flushed_delayed_rows the number of rows waiting to be written in the Insert delay queue.
Open_tables the number of open tables.
Open_files the number of open files.
Open_streams Number of open streams (primarily for log records)
Opened_tables the number of tables that have been opened.
Questions the number of queries destined for the server.
Slow_queries the number of queries that will take more than long_query_time time.
threads_connected the number of connections currently open.
Threads_running the number of threads that are not sleeping.
Uptime How many seconds the server has worked.

Show variables; Display the name and value of a system variable
Command: Show variables like '% variable% '

Show Processlist; Displays all the processes that are running in the system, that is, the query that is currently executing. Most users can view
Their own processes, but if they have process permissions, they can see the process for everyone, including passwords.
If it is the root account, you can see the current connection for all users. If you are a normal account, you can only see the connection you are occupying.
Show Processlist; only the first 100 are listed, please use show full processlist if you want to list them all.
Mysql> show Processlist;

Show table status; Displays information about each table in the database that is currently being used or specified. Information includes the table type and the last updated time of the table

Show privileges; Show the different permissions supported by the server

Show CREATE DATABASE database_name; Displays whether the CREATE DATABASE statement can create the specified databases

Show CREATE TABLE table_name; Displays whether the CREATE DATABASE statement can create the specified databases

Show Engies; Displays the storage engine and the default engine that are available after installation.

Show InnoDB status; Displays the status of the InnoDB storage engine

Show logs; Displaying logs for the BDB storage engine

Show warnings; Displays errors, warnings, and notifications resulting from the last statement executed

Show errors; Show only errors resulting from the last execution statement

The use of the MySQL Show command