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To insert a timestamp in MySQL, you can use the NOW() function, which automatically adds the current date and time at the time of insertion. Alternatively, you can specify a specific date and time format using the STR_TO_DATE() function and provide the desired timestamp value. This timestamp can be inserted into a specific column in a table using the INSERT INTO statement, along with other relevant data for that record. This allows for the automatic tracking of when a record was added or modified, providing a useful reference for data management and analysis.
You can use TIMESTAMP to insert a timestamp column into a table in MySQL.
When inserting timestamps, they must be in the following format:
'YYYY-MM-DD HH:MM:SS'
where:
- YYYY: The year in four digits
- MM: The month in two digits
- DD: The day in two digits
- HH: The hours in two digits
- MM: The minutes in two digits
- SS: The seconds in two digits
Note that you can also include trailing fractional seconds up to 6 digits in a timestamp.
For example, ‘2022-10-28 04:15:56.003495‘ is a valid timestamp.
Also note that TIMESTAMP has a range of ‘1970-01-01 00:00:01’ UTC to ‘2038-01-19 03:14:07’ UTC.
The following example shows how to insert a timestamp column into a table in MySQL in practice.
Example: How to Insert Timestamp in MySQL
We can use the following syntax to create a table named sales that contains information about sales made at various grocery stores at various times:
-- create table
CREATE TABLE sales (
store_ID INT PRIMARY KEY,
item TEXT NOT NULL,
sales_time TIMESTAMP NOT NULL
);
-- insert rows into table
INSERT INTO sales VALUES (0001, 'Oranges', '2015-01-12 03:45:00');
INSERT INTO sales VALUES (0002, 'Apples', '2020-11-25 15:25:01');
INSERT INTO sales VALUES (0003, 'Bananas', '2009-06-30 09:01:39');
INSERT INTO sales VALUES (0004, 'Melons', '2022-04-09 03:29:55');
INSERT INTO sales VALUES (0005, 'Grapes', '2023-05-19 23:10:04');
-- view all rows in table
SELECT * FROM athletes;
Output:
+----------+---------+---------------------+
| store_ID | item | sales_time |
+----------+---------+---------------------+
| 1 | Oranges | 2015-01-12 03:45:00 |
| 2 | Apples | 2020-11-25 15:25:01 |
| 3 | Bananas | 2009-06-30 09:01:39 |
| 4 | Melons | 2022-04-09 03:29:55 |
| 5 | Grapes | 2023-05-19 23:10:04 |
+----------+---------+---------------------+
Notice that the sales_time column is a timestamp column where each of the timestamps are formatted as YYYY-MM-DD HH:MM:SS.
If you attempt to insert a timestamp in a different format, you will receive an error:
-- insert row into table
INSERT INTO sales VALUES (0006, 'Cabbage', '7/22/2023 05:56:00');
-- view all rows in table
SELECT * FROM sales;
ERROR 1292 (22007): Incorrect datetime value: '7/22/2023 05:56:00' for column 'sales_time' at row 1
If you would like to insert a timestamp into the timestamp column in a different format, you can use STR_TO_DATE to do so:
-- insert row into table
INSERT INTO sales VALUES (0006, 'Cabbage', STR_TO_DATE('7/22/2023 05:56:00', '%m/%d/%Y %H:%i:%s'));
-- view all rows in table
SELECT * FROM sales;
Output:
+----------+---------+---------------------+
| store_ID | item | sales_time |
+----------+---------+---------------------+
| 1 | Oranges | 2015-01-12 03:45:00 |
| 2 | Apples | 2020-11-25 15:25:01 |
| 3 | Bananas | 2009-06-30 09:01:39 |
| 4 | Melons | 2022-04-09 03:29:55 |
| 5 | Grapes | 2023-05-19 23:10:04 |
| 6 | Cabbage | 2023-07-22 05:56:00 |
+----------+---------+---------------------+
By using STR_TO_DATE, we are able to insert this new timestamp value without any errors.
Additional Resources
The following tutorials explain how to perform other common tasks in MySQL: