This blog post demonstrated how the "ALTER TABLE RENAME TO" statement works in Postgres by providing practical examples. In Postgres, you can use the IF EXISTS option with the ALTER TABLE command to avoid the “table does not exist” error. PostgreSQL automatically updates its dependent objects when you rename a table, such as foreign key constraints, views, etc. To do so, you must execute the “ALTER TABLE RENAME TO” statement several times. You can’t rename multiple tables simultaneously. To rename a particular table in PostgreSQL, use the RENAME TO clause in conjunction with the ALTER TABLE statement. In this way, you can rename any table in PostgreSQL. The above snippet shows that the “employee_data” has been renamed to “staff_data” successfully. To verify if the table has been renamed or not, execute the “\dt” command: \dt The “ALTER TABLE” message in the output proves that the specified command was executed successfully. To do that, execute the “ALTER TABLE RENAME TO” statement as follows: ALTER TABLE employee_data Suppose we want to rename the “employee_data” table to “staff_data”. The “employee_data” table has been created successfully.
To verify the table creation, execute the “\dt” command: \dt Type \d command followed by the table name (i.e., articledetials) to see the changes made in the selected table: \d articledetials The above snippet clarified that the articleid had been renamed to id in the selected table as well as in the dependent objects/tables. The “CREATE TABLE” message in the output shows that the specified command was executed successfully. PostgreSQL automatically updates its dependent objects when you rename a table, such as foreign key constraints, views, etc.įor a profound understanding, let’s implement the “ ALTER TABLE RENAME TO” statement practically.Įxample: How Do I Rename a Table in Postgres?įollow the below provided stepwise instructions to rename a table in Postgres:įirst, we will create a sample Postgres table named “employee_data” with three columns: employee_id, employee_name, and employee_age: CREATE TABLE employee_data( Use the IF EXISTS option to avoid the “table does not exist” error. In simple terms, each table will be renamed one by one. To rename more than one table, you must execute the “ ALTER TABLE RENAME TO” statement several times. You can’t rename multiple tables in one go. The following points will assist Postgres users in understanding the "ALTER TABLE RENAME TO" statement in a better way:
Consequently, if a table with the specified name does not exist, a notice will be issued rather than an error. The IF EXISTS option is used with the ALTER TABLE command in the above syntax. Postgres experts prefer to use the IF EXISTS option with the ALTER TABLE statement to avoid the “table does not exist” error: ALTER TABLE IF EXISTS tab_name new_tab_name represents a new/modified name of the targeted table. tab_name represents a table to be renamed.
To rename a particular table in PostgreSQL, use the RENAME TO clause in conjunction with the ALTER TABLE statement: ALTER TABLE tab_name
#POSTGRESQL RENAME TABLE HOW TO#
This blog post will teach you how to rename a table in Postgres through practical examples. A Postgres table can be renamed using the ALTER TABLE command. For instance, the CREATE TABLE statement creates a table, the DROP TABLE deletes a table, and the ALTER TABLE updates an existing table. This is my structure of partition tables.PostgreSQL provides different commands/statements to perform the different operations on the Postgres tables. I can alter the name of parent table but I don't know how to alter the 3 child table references. I created 3 child tables on year wise manner. I am trying to rename parent table in partitions.
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