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  Tutorial: Database MySQL Getting Information About Databases and Tables Tutorial

What if you forget the name of a database or table, or what the structure of a given table is (for example, what its columns are called)? MySQL addresses this problem through several statements that provide information about the databases and tables it su

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Getting Information About Databases and Tables

What if you forget the name of a database or table, or what the structure of a given table is (for example, what its columns are called)? MySQL addresses this problem through several statements that provide information about the databases and tables it supports.

You have previously seen SHOW DATABASES , which lists the databases managed by the server. To find out which database is currently selected, use the DATABASE() function:
mysql> SELECT DATABASE();

If you have not yet selected any database, the result is NULL .
To find out what tables the default database contains (for example, when you are not sure about the name of a table), use this command:
mysql> SHOW TABLES;

If you want to find out about the structure of a table, the DESCRIBE command is useful; it displays information about each of a table's columns:
mysql> DESCRIBE pet;


 

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