![]() DO $$īEGIN IF EXISTS( SELECT * FROM information_schema. ![]() So, first, let us understand the syntax to rename the specified column in PostgreSQL. Now, let's rename the column id as usre_id in PostgreSQL. Username VARCHAR (50 ) UNIQUE NOT NULL, password VARCHAR (50 ) NOT NULL,Īs you can see in the code above, here we have created a table user_accounts with a few columns. Create Table CREATE TABLE user_accounts ( Here, we will create a sample table in PostgreSQL, and then write a script to rename the column if only a column exists. Here, we will check the specified name of the column is exist or not in the information_schema of the PostgreSQL database, only If we found the specified column exists then we will rename the specified column? So, let's take an example to rename the column only if a column exists within the table in PostgreSQL. Write a script to rename any single column within the created table.Create a Sample table with a few columns in PostgreSQL.Here I'll explain how you can rename the column only if the specified column exists in your PostgreSQL database table with a simple and issue example. I noticed, that many developers/programmers/people especially those who are beginners or students, working with the PostgreSQL database, sometimes they got difficulty when they going to rename or alter any specified column in PostgreSQL because PostgreSQL does not support the following command: ALTER TABLE table_name RENAME COLUMN IF EXISTS old_columnname TO new_columnname ![]() In my previous article, I explained, Query to Generate Parent-Child Relation Rows By Splitting String in SQL Server and PostgreSQL that you might like to read.
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