![]() ![]() Now, query data from the customers table: SELECT * FROM customers Second, create a temporary table with the same name: customers CREATE TEMP TABLE customers( Consider the following example:įirst, create a table named customers: CREATE TABLE customers( When you create a temporary table that shares the same name as a permanent table, you cannot access the permanent table until the temporary table is removed. PostgreSQL temporary table nameĪ temporary table can have the same name as a permanent table, even though it is not recommended. The mytemp table does not exist because it has been dropped automatically when the session ended, therefore, PostgreSQL issued an error. Only the first session can access it.Īfter that, quit all the sessions: test=# \q Code language: PostgreSQL SQL dialect and PL/pgSQL ( pgsql )įinally, log in to the database server again and query data from the mytemp table: test=# SELECT * FROM mytemp Then, launch another session that connects to the test database and query data from the mytemp table: test=# SELECT * FROM mytemp Īs can see clearly from the output, the second session could not see the mytemp table. Next, create a temporary table named mytemp as follows: test=# CREATE TEMP TABLE mytemp(c INT) Code language: PostgreSQL SQL dialect and PL/pgSQL ( pgsql ) ![]() You are now connected to database "test" as user "postgres". In other words, it is invisible to other sessions.įirst, log in to the PostgreSQL database server using the psql program and create a new database named test: postgres=# CREATE DATABASE test The TEMP and TEMPORARY keywords are equivalent so you can use them interchangeably: CREATE TEMP TABLE temp_table(Ĭode language: PostgreSQL SQL dialect and PL/pgSQL ( pgsql )Ī temporary table is visible only to the session that creates it. Second, specify the column list, which is the same as the one in the CREATE TABLE statement.First, specify the name of the temporary table after the CREATE TEMPORARY TABLE keywords.) Code language: PostgreSQL SQL dialect and PL/pgSQL ( pgsql ) To create a temporary table, you use the CREATE TEMPORARY TABLE statement: CREATE TEMPORARY TABLE temp_table_name( ![]() PostgreSQL automatically drops the temporary tables at the end of a session or a transaction. Creating a PostgreSQL temporary tableĪ temporary table, as its name implied, is a short-lived table that exists for the duration of a database session. Summary: in this tutorial, you will learn about the PostgreSQL temporary table and how to manage it effectively. ![]()
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