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Date - (PostgreSQL Data Types)

PostgreSQL is an open-source relational database management system (RDBMS) that offers many built-in data types to store and work with different types of data. In this tutorial, we'll discuss the Date data type in PostgreSQL.

Syntax

date

Example

Let's take a look at an example of using the Date data type in PostgreSQL.

CREATE TABLE orders (
  id SERIAL PRIMARY KEY,
  order_date DATE
);

INSERT INTO orders (order_date) VALUES ('2022-01-01');

In this example, we created a table named "orders" with two columns: "id" of type "SERIAL" and "order_date" of type "DATE". We then inserted a record with the value '2022-01-01' in the "order_date" column.

Explanation

The Date data type in PostgreSQL is used to store dates with year, month, and day values. Dates can be specified in the format 'YYYY-MM-DD'.

Dates can be manipulated using various built-in functions provided by PostgreSQL, such as date_trunc, date_part, and interval. These functions can be used to extract specific parts of a date or perform date arithmetic.

Use

The Date data type in PostgreSQL is useful for storing and manipulating dates in a convenient and efficient way. It can be used in applications that require tracking of dates, such as financial transactions, event scheduling, and data archiving.

Important Points

  • Dates in PostgreSQL are stored in a compressed format, which requires 4 bytes of storage.
  • Dates are stored in UTC format by default, but can be converted to local time using PostgreSQL's time zone functions.
  • Dates can be compared using standard comparison operators (>, <, =, etc.).
  • When inserting or updating a date, PostgreSQL automatically validates the date's format and ensures that it is a valid date.

Summary

In this tutorial, we discussed the Date data type in PostgreSQL. We covered the syntax, example, output, explanation, use, and important points of using the Date data type. With this knowledge, you can now use the Date data type in PostgreSQL to store and manipulate dates in your applications.

SerialTime
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