I would use a trigger (at least for the update)
The first insert should work with now() and you can leave lastupdateted
empty
Olaf
On 9/4/07 3:01 PM, Hiep Nguyen [EMAIL PROTECTED] wrote:
Hi list,
i tried to create a table with inserted lastupdated timestamp fields:
create table
Triggers are a fine idea, but I would use a trigger for both cases..
no point putting that level of housekeeping on the application when
you can set rules in the database and more or less forget about it.
- michael
On 9/4/07, Olaf Stein [EMAIL PROTECTED] wrote:
I would use a trigger (at least
Agreed...
Also for consistency's sake
On 9/4/07 3:15 PM, Michael Dykman [EMAIL PROTECTED] wrote:
Triggers are a fine idea, but I would use a trigger for both cases..
no point putting that level of housekeeping on the application when
you can set rules in the database and more or less forget
is it possible to do without trigger?
i google and found this link:
http://sql-info.de/mysql/examples/CREATE-TABLE-examples.html
but when i tried to combine two examples into one CREATE statement and it
didn't work.
any idea?
is there a way to create this table that accomplishes these two
There is nothing terribly wrong with the approach documented in
'http://sql-info.de/mysql/examples/CREATE-TABLE-examples.html' but, as
you no doubt have read, it does mean that you have to make sure that
every insert statement is specifically designed to set the *second*
timestamp field to now()
Just do this...
create table temp (
id int not null primary key auto_increment,
data varchar(100),
inserted timestamp default 0,
lastupdated default CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);
And just use
Insert into temp (inserted ) values (NOW());
You're only inserting once, so
so, if trigger is used then
create table temp (
id int not null primary key auto_increment,
data varchar(100),
inserted timestamp,
lastupdated timestamp)
is good enough, right? trigger will use now() function to set inserted
lastupdated.
any thought on backup restore tables tringgers???
If you decide to use the trigger here is the syntax
http://dev.mysql.com/doc/refman/5.0/en/triggers.html
And that table structure looks ok to me
As far as the backup goes just dump the mysql database, which you should be
doing anyway to backup users etc
Olaf
On 9/4/07 3:59 PM, Hiep Nguyen
