In PostgreSQL, the “-” operator is used to subtract minutes from the current or specific DateTime values. Where the DateTime value can be a date, interval, time, or timestamp.
Anytime. Anywhere. Since 1997.
Command Prompt, Inc., is the oldest Postgres Company in North America and one of the oldest Open Source firms still operating today. We serve our clients with best in class expertise and professionalism. You can read more about support and services here:
You have landed at the largest single source of Postgres education blogs in the world. At Command Prompt, we believe deeply that the education of the community is critical to the continued success of Postgres and related technologies. We hope you find content you are looking for and don't hesitate to Contact us today for all your Postgres and Open Source consulting and support needs.
In PostgreSQL, the “-” operator is used to subtract minutes from the current or specific DateTime values. Where the DateTime value can be a date, interval, time, or timestamp.
RPAD() or “right padding” is a built-in function in Postgres which fills a string of a specific length with a substring. It fills/pads the given string from the right side.
In PostgreSQL, the minus operator “-”, the EXTRACT(), and the AGE() functions are used to find the difference between the given timestamps.
PostgreSQL offers a built-in ANY() function that accepts an array as an argument, checks the presence of the given value in the array, and returns a Boolean true or false.
In Postgres, the comma-separated syntax is used in the ORDER BY clause to sort the table’s data based on multiple columns.
To get a month name from a date, specify the date/timestamp as the first and “MONTH” as the second argument to the TO_CHAR() function.
In PostgreSQL, the pg_size_pretty() function retrieves the size of the database object in a human-readable format, such as KB, MB, etc.
LPAD() or “left padding” is a built-in function in Postgres which fills a string of a specific length with a substring. It fills/pads the given string from the left side.
In Postgres, the RANDOM() is an in-built function that generates a random numeric value between “0(inclusive)” and “1(exclusive)” or between a specific range.
To format a timestamp, specify a timestamp and a valid format as arguments to the Postgres TO_CHAR() function.