Featured post

c# - Usage of Server Side Controls in MVC Frame work -

i using asp.net 4.0 , mvc 2.0 web application. project requiremrnt have use server side control in application not possibl in noraml case. ideally want use adrotator control , datalist control. i saw few samples , references in codepleax mvc controllib howwver found less useful. can tell how utilize theese controls in asp.net application along mvc. note: please provide functionalities related adrotator , datalist controls not equivalent functionalities thanks in advace. mvc pages not use normal .net solution makes use of normal .net components impossible. a normal .net page use event driven solution call different methods service side mvc use actions , view completly different way handle things. also, mvc not use viewstate normal .net controlls require. found article discussing mixing of normal .net , mvc.

mysql - Why there can be only one TIMESTAMP column with CURRENT_TIMESTAMP in DEFAULT clause? -


why there can 1 timestamp column current_timestamp in default or on update clause?

create table `foo` (   `productid` int(10) unsigned not null,   `addeddate` timestamp not null default current_timestamp,   `updateddate` timestamp not null default current_timestamp on update current_timestamp ) engine=innodb; 

the error results:

error code : 1293

incorrect table definition; there can 1 timestamp column current_timestamp in default or on update clause

this limitation, due historical, code legacy reasons, has been lifted in recent versions of mysql:

changes in mysql 5.6.5 (2012-04-10, milestone 8)

previously, @ 1 timestamp column per table automatically initialized or updated current date , time. restriction has been lifted. timestamp column definition can have combination of default current_timestamp , on update current_timestamp clauses. in addition, these clauses can used datetime column definitions. more information, see automatic initialization , updating timestamp , datetime.

http://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-5.html


Comments

Popular posts from this blog

c# - Usage of Server Side Controls in MVC Frame work -

cocoa - Nesting arrays into NSDictionary object (Objective-C) -

ios - Very simple iPhone App crashes on UILabel settext -