Skip to main content
TopMiniSite

Back to all posts

How to Change Format Date In Postgresql?

Published on
5 min read
How to Change Format Date In Postgresql? image

Best PostgreSQL Date Format Tools to Buy in October 2025

1 Full-Stack Web Development with TypeScript 5: Craft modern full-stack projects with Bun, PostgreSQL, Svelte, TypeScript, and OpenAI

Full-Stack Web Development with TypeScript 5: Craft modern full-stack projects with Bun, PostgreSQL, Svelte, TypeScript, and OpenAI

BUY & SAVE
$36.26
Full-Stack Web Development with TypeScript 5: Craft modern full-stack projects with Bun, PostgreSQL, Svelte, TypeScript, and OpenAI
2 PostgreSQL: A Practical Guide for Developers and Data Professionals

PostgreSQL: A Practical Guide for Developers and Data Professionals

BUY & SAVE
$5.99
PostgreSQL: A Practical Guide for Developers and Data Professionals
3 Procedural Programming with PostgreSQL PL/pgSQL: Design Complex Database-Centric Applications with PL/pgSQL

Procedural Programming with PostgreSQL PL/pgSQL: Design Complex Database-Centric Applications with PL/pgSQL

BUY & SAVE
$39.91
Procedural Programming with PostgreSQL PL/pgSQL: Design Complex Database-Centric Applications with PL/pgSQL
4 Beginning PHP and PostgreSQL 8: From Novice to Professional (Beginning: From Novice to Professional)

Beginning PHP and PostgreSQL 8: From Novice to Professional (Beginning: From Novice to Professional)

  • AFFORDABLE PRICES FOR QUALITY READS-SAVE ON YOUR NEXT BOOK!
  • ECO-FRIENDLY CHOICE-REDUCE WASTE BY BUYING USED BOOKS.
  • UNIQUE FINDS-DISCOVER RARE TITLES NOT AVAILABLE IN STORES.
BUY & SAVE
$35.25 $49.99
Save 29%
Beginning PHP and PostgreSQL 8: From Novice to Professional (Beginning: From Novice to Professional)
5 DEUOTION T-post Clips Tool, Fixing Fence Clip and Wire Steel Bender T-post Handheld Twisting Tool, Multi Functional Bender

DEUOTION T-post Clips Tool, Fixing Fence Clip and Wire Steel Bender T-post Handheld Twisting Tool, Multi Functional Bender

  • RAPID T-POST CLIP SECURING SAVES TIME ON FENCE PROJECTS.
  • USER-FRIENDLY DESIGN SUITS PROS AND DIYERS ALIKE FOR EFFICIENCY.
  • DURABLE STEEL CONSTRUCTION ENSURES RELIABILITY FOR OUTDOOR USE.
BUY & SAVE
$16.99
DEUOTION T-post Clips Tool, Fixing Fence Clip and Wire Steel Bender T-post Handheld Twisting Tool, Multi Functional Bender
6 Mastering PostgreSQL for Developers: Building Fast, Secure, and Scalable Apps

Mastering PostgreSQL for Developers: Building Fast, Secure, and Scalable Apps

BUY & SAVE
$6.77
Mastering PostgreSQL for Developers: Building Fast, Secure, and Scalable Apps
7 PostgreSQL for Python Web Development with Flask: A Practical Guide to Building Database-Driven Web Applications

PostgreSQL for Python Web Development with Flask: A Practical Guide to Building Database-Driven Web Applications

BUY & SAVE
$7.99
PostgreSQL for Python Web Development with Flask: A Practical Guide to Building Database-Driven Web Applications
8 Century Drill & Tool 72898 Post Level

Century Drill & Tool 72898 Post Level

  • HANDS-FREE LEVELING: MAGNETIC STRIPS & ELASTIC STRAP FOR EFFORTLESS USE.

  • VERSATILE TOOL: PERFECT FOR POSTS, POLES, RAILINGS, AND MORE.

  • MAXIMUM ACCURACY: THREE VIALS ENSURE PRECISE LEVELING EVERY TIME.

BUY & SAVE
$11.98
Century Drill & Tool 72898 Post Level
9 Lind Kitchen 2PCS High-tensile Wire Tool Twisting Too Fencing Tool Wire Twister Multi-Functional Bender for Fixing Fence Wire and Wire Clip

Lind Kitchen 2PCS High-tensile Wire Tool Twisting Too Fencing Tool Wire Twister Multi-Functional Bender for Fixing Fence Wire and Wire Clip

  • DURABLE STEEL DESIGN: CORROSION-RESISTANT FOR LONG-LASTING USE.

  • ERGONOMIC EFFICIENCY: REDUCES HAND FATIGUE WITH EASY WIRE WRAPPING.

  • COMPACT & PORTABLE: PERFECT SIZE FOR ALL YOUR FENCING AND REPAIR NEEDS.

BUY & SAVE
Lind Kitchen 2PCS High-tensile Wire Tool Twisting Too Fencing Tool Wire Twister Multi-Functional Bender for Fixing Fence Wire and Wire Clip
10 Pull A Post The Original Fence Post Removal Tool Galvanized Cable & 1/4 Chain, Works with Jack or Lever to Remove Wood Fence Posts Even if Broken Designed for Fence Repair & Replacement

Pull A Post The Original Fence Post Removal Tool Galvanized Cable & 1/4 Chain, Works with Jack or Lever to Remove Wood Fence Posts Even if Broken Designed for Fence Repair & Replacement

  • BREAK FORCES: 4200 LBS CABLE & 5200 LBS CHAIN FOR SECURE REPAIRS.

  • LIGHTWEIGHT & EASY TO TRANSPORT; UNDER 2 LBS FOR JOB SITE CONVENIENCE.

  • UNIVERSAL FIT FOR 4X4 AND ROUND POSTS; VERSATILE FOR ALL FENCE REPAIRS.

BUY & SAVE
$36.99
Pull A Post The Original Fence Post Removal Tool Galvanized Cable & 1/4 Chain, Works with Jack or Lever to Remove Wood Fence Posts Even if Broken Designed for Fence Repair & Replacement
+
ONE MORE?

In PostgreSQL, you can change the format of a date by using the TO_CHAR function. This function allows you to format a date or timestamp value based on a specific format string. For example, you can convert a date value to a string in a specific format like 'YYYY-MM-DD' or 'DD/MM/YYYY'.

To change the format of a date, you can use the TO_CHAR function like this:

SELECT TO_CHAR(date_column, 'YYYY-MM-DD') AS formatted_date FROM your_table_name;

In this example, date_column is the column in your table that stores the date value, and 'YYYY-MM-DD' is the format string that specifies how you want the date to be formatted. You can replace 'YYYY-MM-DD' with any other format string as needed.

By using the TO_CHAR function, you can easily change the format of date values in PostgreSQL to meet your specific requirements.

How to format a date as YYYY-MM-DD in PostgreSQL?

In PostgreSQL, you can format a date as YYYY-MM-DD using the to_char function. Here is an example of how you can do this:

SELECT to_char(current_date, 'YYYY-MM-DD');

This will return the current date in the format YYYY-MM-DD. You can replace current_date with any date column or value that you want to format in the same way.

What is the difference between date arithmetic and date formatting in PostgreSQL?

Date arithmetic in PostgreSQL refers to performing mathematical operations on dates, such as adding or subtracting days, months, or years from a given date.

Date formatting, on the other hand, refers to changing the display format of a date value. This can include changing the order of the date components (such as displaying the date as yyyy-mm-dd instead of dd/mm/yyyy), adding separators (such as slashes or dashes) between the date components, or displaying the date in a specific language or cultural conventions.

In summary, date arithmetic involves manipulating dates through mathematical operations, while date formatting involves changing the appearance of dates for display purposes.

What is the importance of date manipulation in database operations?

Date manipulation is crucial in database operations for the following reasons:

  1. Sorting and filtering: Date manipulation allows for sorting and filtering of data based on specific date ranges or time periods, making it easier to retrieve relevant information.
  2. Data analysis: Date manipulation enables the analysis of trends and patterns over time, such as sales performance, customer behavior, and other metrics. This helps in making data-driven decisions and forecasting future outcomes.
  3. Data integration: When working with data from multiple sources or databases, date manipulation helps in aligning and merging data based on specific date criteria, ensuring consistency and accuracy in reporting.
  4. Report generation: Date manipulation is essential for creating customized reports and visualizations that display data in a meaningful and insightful way, helping stakeholders to understand and interpret the information effectively.
  5. Data cleansing and transformation: Date manipulation allows for cleaning and transforming data, such as converting date formats, extracting components of dates, or calculating date differences, to ensure data quality and consistency.

Overall, date manipulation plays a crucial role in database operations by facilitating data management, analysis, and reporting, and is essential for maintaining the integrity and usefulness of the database.

How to calculate the difference between two dates in PostgreSQL?

In PostgreSQL, you can calculate the difference between two dates using the AGE() function. Here is an example of how you can use this function to calculate the difference between two dates:

SELECT AGE('2022-01-01'::date, '2021-01-01'::date) AS date_difference;

This query will return the difference between January 1, 2022, and January 1, 2021, in the format of years-months-days.

You can also calculate the difference between two timestamps using the same function. Here is an example for calculating the difference between two timestamps:

SELECT AGE('2022-01-01 12:00:00'::timestamp, '2021-01-01 12:00:00'::timestamp) AS timestamp_difference;

This query will return the difference between January 1, 2022, at 12:00:00 PM and January 1, 2021, at 12:00:00 PM in the format of years-months-days hours:minutes:seconds.

What is the function for extracting the month from a date in PostgreSQL?

The function to extract the month from a date in PostgreSQL is EXTRACT. You can use it in the following way:

SELECT EXTRACT(MONTH FROM your_date_column) AS month FROM your_table;

This will return the month as an integer value (1-12) from the specified date column in your table.

How to display the day of the week in a date format in PostgreSQL?

In PostgreSQL, you can use the to_char function along with the D parameter to display the day of the week in a date format. Here is an example:

SELECT to_char(current_date, 'Day');

This will return the current day of the week in the long format (e.g. "Monday", "Tuesday", etc.). You can also customize the format by using different parameters with the to_char function.

For example, to display the day of the week in the abbreviated format (e.g. "Mon", "Tue", etc.), you can use the following query:

SELECT to_char(current_date, 'Dy');

You can refer to the PostgreSQL documentation for more information on formatting dates using the to_char function: https://www.postgresql.org/docs/current/functions-formatting.html