Postgres create table
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Summary: in this tutorial, you will learn how to use the PostgreSQL CREATE TABLE statement to create a new table.
Typically, a relational database consists of multiple related tables.
Tables allow you to store structured data like customers, products, and employees.
To create a new table, you use the statement. Here’s the basic syntax of the statement:
In this syntax:
First, specify the name of the table that you want to create after the keywords.
Postgres describe tableThe table name must be unique in a schema. If you create a table with a name that already exists, you’ll get an error.
A schema is a named collection of database objects including tables. If you create a table without a schema, it defaults to public.
You’ll learn more about the schema in the schema tutorial.
Second, use the option to create a new table only if it does not exist. When you use the option and the table already exists, PostgreSQL will issue a notice instead of an error.
Third, specify table columns separated by commas.
Each column definition consists of the column name, data type, size, and constraint.
The cons
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