SQL - How to sort multiple table by common column

Question

I have 3 table:

MariaDB [test]> DESCRIBE t1;
+-------+-----------+------+-----+---------+----------------+
| Field | Type      | Null | Key | Default | Extra          |
+-------+-----------+------+-----+---------+----------------+
| id    | int(11)   | NO   | PRI | NULL    | auto_increment |
| name  | char(150) | NO   |     | NULL    |                |
| time  | datetime  | NO   |     | NULL    |                |
+-------+-----------+------+-----+---------+----------------+


MariaDB [test]> DESCRIBE t2;
+-------+-----------+------+-----+---------+----------------+
| Field | Type      | Null | Key | Default | Extra          |
+-------+-----------+------+-----+---------+----------------+
| id    | int(11)   | NO   | PRI | NULL    | auto_increment |
| name  | char(150) | NO   |     | NULL    |                |
| time  | datetime  | NO   |     | NULL    |                |
+-------+-----------+------+-----+---------+----------------+


MariaDB [test]> DESCRIBE t3;
+-------+-----------+------+-----+---------+----------------+
| Field | Type      | Null | Key | Default | Extra          |
+-------+-----------+------+-----+---------+----------------+
| id    | int(11)   | NO   | PRI | NULL    | auto_increment |
| name  | char(150) | NO   |     | NULL    |                |
| time  | datetime  | NO   |     | NULL    |                |
+-------+-----------+------+-----+---------+----------------+

I want to join 3 tables and sort all rows with time field.

How I can do this?

Answer 1

You could use:

SELECT id, name, `time` FROM t1
UNION ALL 
SELECT id, name, `time` FROM t2
UNION ALL 
SELECT id, name, `time` FROM t3
ORDER BY `time`

The pattern where you have multiple tables with the same schema could indicate poor design.

Answer 2

You don't want a join you want a UNION:

SELECT *
FROM
 (
   SELECT id, name, time FROM t1
   UNION ALL 
   SELECT id, name, time FROM t2
   UNION ALL 
   SELECT id, name, time FROM t3
 ) as dt
ORDER BY time