How to use temporary tables in MySQL

In MySQL, you can create and use temporary tables using the following steps:

1. Create a temporary table: You can use the CREATE TEMPORARY TABLE statement to create a temporary table. For example, create a temporary table named temp_table.

CREATE TEMPORARY TABLE temp_table (
    id INT,
    name VARCHAR(50)
);

1. Inserting data into a temporary table: You can use the INSERT INTO statement to insert data into a temporary table. For example, inserting one row of data into temp_table.

INSERT INTO temp_table (id, name) VALUES (1, 'John');

1. To query a temporary table: You can use the SELECT statement to retrieve data from the temporary table. For example, to query all data in temp_table:

SELECT * FROM temp_table;

1. Drop temporary table: You can use the statement DROP TEMPORARY TABLE to delete a temporary table when you no longer need it. For example, to delete the temp_table temporary table:

DROP TEMPORARY TABLE temp_table;

Please note that temporary tables only exist within the current session and are automatically deleted when the session ends. Temporary tables are very useful for temporarily storing data, but please be aware that they cannot be used within a transaction.