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PostgreSQL - Create table if not exists

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Created by:
Kelly
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In this article, we would like to show you how to create a table if not exists in PostgreSQL.

Quick solution:

CREATE TABLE IF NOT EXISTS "table_name" (
    "column1" DATA_TYPE,
    "column2" DATA_TYPE,
    "column3" DATA_TYPE,
    ...
);

Note:

Go to the official documentation to see available DATA_TYPES.

Practical example

In this example, we create users table with the following columns and types:

  • id - INT,
  • name - VARCHAR,
  • role - VARCHAR. 

Query:

CREATE TABLE IF NOT EXISTS "users" (
    id SERIAL,
    name VARCHAR(100) NOT NULL,
    role VARCHAR(15) NOT NULL,
    PRIMARY KEY (id)
);

Database:

Table columns created by SQL CREATE TABLE - HeidiSQL preview
Table columns created by SQL CREATE TABLE - HeidiSQL preview

References

PostgreSQL - problems

PostgreSQL - Create table if not exists
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