I've got multiple entries in table A and would like to display the number of entries in a coloumn of table B. Is there a way to create a dynamic cell-content displaying the number of entries in a table?

I'm a beginner in MySQL and did not find a way to do it so far.

Example table A:

```
+----+------+------------+
| id | name | birthday   |
+----+------+------------+
|  1 | john | 1976-11-18 |
|  2 | bill | 1983-12-21 |
|  3 | abby | 1991-03-11 |
|  4 | lynn | 1969-08-02 |
|  5 | jake | 1989-07-29 |
+----+------+------------+

```

What I'd like in table B:

```
+----+------+----------+
| id | name | numusers |
|  1 | tblA |        5 |
+----+------+----------+

```

In my actual database there is no incrementing ID so just taking the last value would not work - if this would've been a solution.

If MySQL can't handle this the option would be to create some kind of cronjob on my server reading the number of rows and writing them into that cell. I know how to do this - just checking if there's another way.

I'm not looking for a command to run on the mysql-console. What I'm trying to figure out is if there's some option which dynamically changes the cell's value to what I've described above.