![]() ![]() LIMIT 0 Code language: SQL (Structured Query Language) ( sql ) 1) Creating a temporary table exampleįirst, create a new temporary table called credits that stores customers’ credits: CREATE TEMPORARY TABLE credits( Instead, you use the following syntax: CREATE TEMPORARY TABLE temp_table_name To create a temporary table whose structure is based on an existing table, you cannot use the CREATE TEMPORARY TABLE. ) Code language: SQL (Structured Query Language) ( sql ) The syntax of the CREATE TEMPORARY TABLE statement is similar to the syntax of the CREATE TABLE statement except for the TEMPORARY keyword: CREATE TEMPORARY TABLE table_name( To avoid this issue, you can use the DROP TEMPORARY TABLE statement to drop a temporary table instead of the DROP TABLE statement MySQL CREATE TEMPORARY TABLE statement Then, you may issue a DROP TABLE statement to remove the permanent table instead of the temporary table, which is not expected. Because this may lead to confusion and potentially cause an unexpected data loss.įor example, if the connection to the database server is lost and you reconnect to the server automatically, you cannot differentiate between the temporary table and the regular one. When you drop the employees temporary table, the regular employees table is available and accessible.Įven though a temporary table can have the same name as a regular table, it is not recommended. Every query you issue against the employees table is now referring to the temporary table employees. For example, if you create a temporary table named employees in the sample database, the existing employees table becomes inaccessible. ![]() A temporary table can have the same name as a regular table in a database.However, in the same session, two temporary tables cannot share the same name. Different clients can create temporary tables with the same name without causing errors because only the client that creates the temporary table can see it. A temporary table is only available and accessible to the client that creates it.Also, you can use the DROP TABLE statement to remove a temporary table explicitly when you are no longer using it. MySQL removes the temporary table automatically when the session ends or the connection is terminated.Notice that the keyword TEMPORARY is added between the CREATE and TABLE keywords. A temporary table is created by using CREATE TEMPORARY TABLE statement.In such cases, you can use a temporary table to store the immediate result and use another query to process it.Ī MySQL temporary table has the following features: In MySQL, a temporary table is a special type of table that allows you to store a temporary result set, which you can reuse several times in a single session.Ī temporary table is handy when it is impossible or expensive to query data that requires a single SELECT statement. Summary: in this tutorial, we will discuss MySQL temporary tables and show you how to create, use, and drop temporary tables. ![]()
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