Truy vấn MySQL chọn ngày từ cột timestamp

Tạo bảng có cột timestamp:

mysql> create table DemoTable    -> (    -> CustomerName varchar(100),    -> CustomerShippingDate timestamp    -> ); Query OK, 0 rows affected (0.52 sec)

Chèn dữ liệu:

mysql> insert into DemoTable values('Chris','2019-01-21'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('David','2019-03-01'); Query OK, 1 row affected (0.22 sec) mysql> insert into DemoTable values('Robert','2019-06-04'); Query OK, 1 row affected (0.25 sec)

Hiển thị dữ liệu:

mysql> select *from DemoTable;

Kết quả

+--------------+----------------------+ | CustomerName | CustomerShippingDate | +--------------+----------------------+ | Chris        | 2019-01-21 00:00:00  | | David        | 2019-03-01 00:00:00  | | Robert       | 2019-06-04 00:00:00  | +--------------+----------------------+ 3 rows in set (0.00 sec)

Truy vấn chọn phần ngày (bỏ giờ):

mysql> select *,date(CustomerShippingDate) from DemoTable;

Kết quả

+--------------+----------------------+----------------------------+ | CustomerName | CustomerShippingDate | date(CustomerShippingDate) | +--------------+----------------------+----------------------------+ | Chris        | 2019-01-21 00:00:00 | 2019-01-21                  | | David        | 2019-03-01 00:00:00 | 2019-03-01                  | | Robert       | 2019-06-04 00:00:00 | 2019-06-04                  | +--------------+----------------------+----------------------------+ 3 rows in set (0.00 sec)