The Ultimate Guide to High Availability with MariaDB

Cannot millisecond resolution in a DATETIME column using MariaDB 5.5.44

According to all of the documentation I have read, this looks pretty simple to do. But it just does not work. This is the snippet that shows how I defined the column.

id int(12) NOT NULL auto_increment,
  ev_time DATETIME(3) NOT NULL,
  hostname varchar(65) NOT NULL,
  subsys varchar(65),

I have tried using both TIMESTAMP and DATETIME, both give me the same results, the trailing 3 digits are always returned with a value of 000. When I insert, it does not matter if I leave the ev_time field blank and let it autofill, or if I put NOW() in the insert, the result is always this output:

| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
| 2018-07-06 07:58:11.000 |
+-------------------------+

Why doesn't this work???

Answer Answered by Ian Gilfillan in this comment.

You should specify the precision, for example NOW(3).

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