sql - TSQL Not Equal <> behaving differently -


i have 2 tables in sql server 2008 r2

table1 - column datecreated datetime null table2 - column datecreated datetime null  when see profiler select * table1 datecreated <> '2011-06-10 00:00:00.000'

i have 3 records date

2011-06-10 00:00:00.000 2011-06-10 00:00:00.000 2011-06-10 09:45:00.000

none of records returned

on table2

select * table2 datecreated <> '2011-06-10 00:00:00.000'

i have 3 records date

2011-06-10 18:02:05.000 2011-06-10 18:05:08.000 2011-06-10 18:07:09.000

all 3 records returned. weird. why in 1st case not records when should 1 record back???

in sql, '2011-06-10 00:00:00.000' not date. string gets converted date. in database '2011-06-10 00:00:00.000' might '2011-06-10 00:00:00.00001'. maybe try using datediff(mcs,datecreated,'2011-06-10 00:00:00.000') see actual difference is.


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