MySQL - Chuyển đổi YYYY-MM-DD sang timestamp UNIX

Sử dụng UNIX_TIMESTAMP(). Tạo bảng:

mysql> create table DemoTable1997 ( DueDate date ); Query OK, 0 rows affected (0.58 sec)

Thêm dữ liệu:

mysql> insert into DemoTable1997 values('2018-10-11'); Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable1997 values('2019-12-21'); Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable1997 values('2017-01-31'); Query OK, 1 row affected (0.11 sec)

Hiển thị dữ liệu:

mysql> select * from DemoTable1997;

+------------+
| DueDate    |
+------------+
| 2018-10-11 |
| 2019-12-21 |
| 2017-01-31 |
+------------+
3 rows in set (0.00 sec)

Truy vấn chuyển sang UNIX timestamp:

mysql> select unix_timestamp(cast(DueDate as date)) as Result from DemoTable1997;

Kết quả:

+------------+
| Result     |
+------------+
| 1539196200 |
| 1576866600 |
| 1485801000 |
+------------+
3 rows in set (0.00 sec)