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Retrieving Database Table Schemas in MySQL
Manipulating your MySQL database effectively often requires a thorough understanding of the tables and their structure. To reveal this structure, it is essential to retrieve the schema of a table.
Viewing the Schema
The MySQL console provides several commands for displaying table schemas:
Formatted Output:
To obtain a formatted output of the table schema, use the following command:
describe [db_name.]table_name;
This command generates a detailed list of columns, their data types, constraints, and other information.
SQL Statement for Table Creation:
Another method, especially useful for recreating or modifying tables, is to use the following command:
show create table [db_name.]table_name;
This command returns an SQL statement that can be executed to recreate the table with its current schema.
Usage Example
Suppose you have a table named users in the database employees. To display its schema using the first command, you would enter:
describe employees.users;
Alternatively, to obtain the SQL statement for recreating the table, use:
show create table employees.users;
The result of these commands will provide you with comprehensive information about the users table, including column definitions, constraints, and other relevant schema details.
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