Dateformat for sql server in WHERE clause

a good article about date format

http://www.sql-server-helper.com/tips/date-formats.aspx

Select a.id AS idname, a.userid AS useridname, a.a_categoryid AS acategoryidname, a.code AS acodename, a.pointid AS pointidname,
            a.title AS titlename, a.briefdesc AS briefdescname, a.contentdesc AS contentdescname, a.filepath AS filepathname, a.pageno AS pagenoname,
            a.datecreated AS datecreatedname, a.datemodified AS datemodifiedname, ut.name AS utname
            from article a
                inner join usertable ut on a.userid = ut.id
                 WHERE a.a_categoryid = 5 AND convert(datetime, a.datecreated, 101) = '11-13-2010';

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Select a.id AS idname, a.userid AS useridname, a.a_categoryid AS acategoryidname, a.code AS acodename, a.pointid AS pointidname,
            a.title AS titlename, a.briefdesc AS briefdescname, a.contentdesc AS contentdescname, a.filepath AS filepathname, a.pageno AS pagenoname,
            a.datecreated AS datecreatedname, a.datemodified AS datemodifiedname, ut.name AS utname
            from article a
                inner join usertable ut on a.userid = ut.id
                 WHERE a.a_categoryid = 5 AND convert(datetime, a.datecreated, 110) = '11-13-2010';


another article worth reading

http://www.sqlusa.com/bestpractices/datetimeconversion/

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try without '-', eg: a.datecreated = '20101113' (yyyymmdd)

aiks, none of them ~ o.o

can you post some results
select datecreated from article where ....


for sample data

this should be alright

Select a.id AS idname, a.userid AS useridname, a.a_categoryid AS acategoryidname, a.code AS acodename, a.pointid AS pointidname, 
            a.title AS titlename, a.briefdesc AS briefdescname, a.contentdesc AS contentdescname, a.filepath AS filepathname, a.pageno AS pagenoname, 
            a.datecreated AS datecreatedname, a.datemodified AS datemodifiedname, ut.name AS utname 
            from article a 
                inner join usertable ut on a.userid = ut.id
                 WHERE a.a_categoryid = 5 AND a.datecreated between '2010-11-13' and DATEADD(DAY,1,'2010-11-13');

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pls try: convert(datetime,convert(char(10),datecreated,101)) = '20101113'

hope you are aware that example date is in the future