1
2
3
4
5
6
7
8
9
10
11
12
13
|
select timestampdiff(microsecond,'2000-01-01 00:00:00','2001-01-01 00:00:00.123456');
timestampdiff(microsecond,'2000-01-01 00:00:00','2001-01-01 00:00:00.123456')
31622400123456
explain extended select timestampdiff(microsecond,'2000-01-01 00:00:00','2001-01-01 00:00:00.123456');
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
Warnings:
Note 1003 select timestampdiff(MICROSECOND,'2000-01-01 00:00:00','2001-01-01 00:00:00.123456') AS `timestampdiff(microsecond,'2000-01-01 00:00:00','2001-01-01 00:00:00.123456')`
create view v1 as select timestampdiff(microsecond,'2000-01-01 00:00:00','2001-01-01 00:00:00.123456');
select * from v1;
Name_exp_1
31622400123456
drop view v1;
|
