How to get current date and time using NOW function in MySQL

How to use the NOW function in MySQL to get the current date and time

MySQL is a commonly used relational database management system that provides a variety of functions to process dates and times. Among them, the NOW function can be used to obtain the value of the current date and time. This article will introduce how to use MySQL's NOW function to get the current date and time, and provide corresponding code examples.

It is very simple to use the NOW function to obtain the current date and time. You only need to call this function in MySQL. The following is a sample code:

SELECT NOW();

After executing the above code, MySQL will return the value of the current date and time. For example, the result of executing the above code may be: 2021-01-01 12:34:56.

If you want to put the date and time values ​​obtained by the NOW function into a field in the table, you can use the INSERT statement to achieve this. The following is a sample code:

INSERT INTO mytable (date_time_column) VALUES (NOW());

After executing the above code, MySQL will insert the value of the current date and time into the "date_time_column" field in the table named "mytable".

In addition to getting the current date and time, the NOW function can also be used to calculate the difference between dates and times. For example, you can use the NOW function to calculate the time interval between occurrences of an event. Here is a sample code:

SELECT TIMESTAMPDIFF(MINUTE, event_time, NOW()) AS time_diff FROM events;

The above code uses the NOW function to get the value of the current date and time, compares it with the "event_time" field in the table, and then calculates the difference in minutes between them, and returns the result as the "time_diff" column.

Of course, in addition to getting the current date and time, MySQL also provides many other date and time functions, such as DATE, TIME, YEAR, MONTH, etc. Developers can choose the appropriate function to handle date and time data based on their needs.

To summarize, using the NOW function in MySQL can easily obtain the value of the current date and time, and further calculation and processing can be performed through other date and time functions. Mastering the use of these functions, developers can manipulate date and time data more flexibly to meet various business needs. I hope this article will help you use the NOW function to get the current date and time in MySQL.

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