![]() Suppose, we have two tables named courses and enrolls in the mysqltutorial database with the data as below. In this example, we will check how to create a temporary table whose structure is based on some query. Creating a temporary table whose structure based on a query If we close the session and execute the SELECT statement again, MySQL will issue an error saying that the table does not exist. But we can check the structure of the temporary table using the DESCRIBE TABLE command. However, if we do the show tables command then the temporary tables are not listed. We can check the output of the above statements in the below image.Īs you can see from the above that the temporary table behaves like a normal table in MySQL. INSERT INTO teachers (full_name, age, salary, email) we can check the data from the table using the SELECT statement. Now, insert some dummy data into it as below. The following statement creates a temporary table named teachers in the selected database. Let us now understand the concept of the temporary table with the help of some examples. This is exactly the same as the normal table creation except for the TEMPORARY keyword which is between the CREATE and TEMPORARY keywords.įor creating a temporary table whose structure is the same as an existing table in the database, then you can use the following syntax. Once the temporary table is dropped, the permanent will be accessible.įollowing is the syntax of creating a temporary table in MySQL. However, you refer to the table named customer in the query, the query will refer only to the temporary table, not the permanent one. For example, if there is a table named customer already exists in the database, still you can create a customer temporary table. You can create a temporary table with the same name as the permanent table. ![]() However, the table can be dropped explicitly using the DROP TEMPORARY TABLE statement if the table is no longer required. A temporary table in MySQL drops automatically when the session is terminated.However, you cannot create the same table name for two different tables. Two different sessions can use the same table name as there will be no conflict with them. The temporary tables are not shareable between sessions that means the table is only visible and accessible to the session that creates it.For creating a temporary table, you must have the CREATE TEMPORARY TABLE privileges on the database.Note the keyword TEMPORARY which is used between the CREATE and TABLE keywords. A temporary table in MySQL is created by CREATE TEMPORARY TABLE statement.This table is mainly used for storing intermediate results while processing queries.įollowing are the important point you need to keep in mind while working with the MySQL Temporary Table. MySQL Temporary table is very useful when you are working with MySQL. MySQL provides the feature of the temporary table from its release 3.23. After re-login into the database, you cannot find the temporary table which you have created in the earlier session. The database engine automatically drops the table definition along with the data from the database as soon as you terminate the session. After login into the database, you create a temporary table, use it and log off. These types of tables are session-specific. What is a Temporary Table?Ī temporary table is temporary in nature that means it is not permanent in the database. Summary: in this tutorial, you will learn about MySQL Temporary table, how to create, use and drop temporary tables with examples.
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