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The ‘mysqlshow’ command has various flags to provide a lot of options on displaying tables. The ‘–keys’ flag is specifically used to show information about indexes in a table.
The ‘mysqlshow’ command provides almost the similar information as some ‘SHOW’ statements. It also enables to extract database and table information at the command prompt.
The table ‘PROCESSLIST’ is responsible for storing all the information about the threads executing within the server. The other tables are not valid tables in the INFORMATION_SCHEMA.
The ‘INFORMATION_SCHEMA’ is a method to access information about the databases and its objects known as metadata. Its content is MySQL-specific which makes it more portable.
The ‘INFORMATION_SCHEMA’ is a very useful in MySQL. It has many tables each serving its individual purpose. The storage engine information is stored in ENGINES and plugin information in PLUGINS.