Use SQL statements to obtain MySQL table information

In the MySQL database, you can use some SQL statements to obtain table information. Through these statements, you can obtain the table structure, column information, indexes, and other related metadata. The following are some commonly used SQL statements that can help you obtain information about MySQL tables.

1. Get the structure of the table

To obtain the structure of the table, you can use the DESCRIBE statement or SHOW COLUMNS statement. These statements will return information such as the name, data type, length, and whether nulls are allowed for each column in the table.

DESCRIBE table_name;

or

SHOW COLUMNS FROM table_name;

Replace the above table_namewith the name of the table you want to get information from.

2. Get the index information of the table

To obtain the index information of a table, you can use the SHOW INDEX statement. This statement will return the index name, index type, columns included in the index and other information in the table.

SHOW INDEX FROM table_name;
<