ソス@ソスソスdatetimepickerソスソスnullソスソスソスソス
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ソスEC/C++
ソスEDelphi
ソスEVisual BasicソスソスソスSソスソス
ソス@(VB2-VB6ソスソス.NETソスソスソスp)
ソスEVisual Basic(VB2-VB6)
ソスEVisual Basic .NET
ソスEVisual C++
ソスEpapy's softwarelibrary
datetimepickerソスソスnullソスlソスソスソスソスソスノ関ゑソスソス骼ソソス竄ェソスソスソスソスワゑソスソスBdatatimepickerソスソスnullソスソスソスソスソスソス鼾ソスGソスソスソス[ソスi''ソスヘ難ソスソスtソス^ソスナはゑソスソスソスワゑソスソスソスニゑソスソスソスソスGソスソスソス[ソスナゑソスソスjソスノなゑソスソストゑソスソスワゑソスソスフで、ifソスソスソスナエソスソスソス[ソス発撰ソスソスソスソスソスソスネゑソスソス謔、ソスノゑソスソスソスソスソスソスニ思ソスソスソストゑソスソスワゑソスソスBif datatimepicker.date is not null ソスソス@if datatimepicker.data <> ''ソスソスソスソスソスソスソスソストみゑソスソスフでゑソスソスソスソスAソスRソスソスソスpソスCソスソスソスGソスソスソス[ソスノなゑソスワゑソスソスBifソスソスソスナゑソスソスnullソスlソスネゑソスニゑソスソスソスソス¥ソスソスソスソスソスソスソスソスソスソスソスソスソスソスかソス驍ゥソスソスソスソスソスソスソスソスソスソス痰「ソスワゑソスソスソスソスH
ソスワゑソスソスAソスfソス[ソス^ソスxソス[ソスXソスソスソスソスNソスGソスソスソスナ趣ソスソスソスソストゑソスソスソスニゑソスソスノ、sqlソスソスソスフ抵ソスソスソスNVLソスヨ撰ソスソスソスnullソスlソス判断ソスソスソス謔、ソスニゑソスソスソスソスソスAソスヌみ搾ソスソスンまゑソスソスソスナゑソスソスソスソスBdelphi5ソスナ、nullソスlソスソス0ソスソスソスノ置ソスソスソスソスソスソスソスソスソスソスソスソスヘゑソスソスソスワゑソスソスソスソスH
ソスソスソスソスノゑソスソスヘ。
SQL ソスソス NULL ソスソスソスレゑソスソスヌゑソスソスソスソスヘ、
FieldByName('ソスルにゑソスソスソス').IsNull
ソスナ費ソスソスソスナゑソスソスワゑソスソスB
http://hpcgi1.nifty.com/MADIA/DelphiBBS/wwwlng.cgi?print+201001/10010054.txt
ソスソスソスフ鯉ソスソスニ関連ソスソスソスソスフゑソスソスニ思ソスソスソスワゑソスソスソスソスA
begin
ソス@if Query1.FieldByName('ソスルにゑソスソスソス').IsNull then
ソス@ソス@dDate := -1
ソス@else
ソス@ソス@dDate := Query1.FieldByName('ソスルにゑソスソスソス').asDateTime;
ソス@SetDate(dDate);
end;
ソスソスソスソスネ奇ソスソスソスソスナ擾ソスソスソスソスソスソス驍オソスソスソスネゑソスソスニ思ソスソスソスワゑソスソスB
ソスソスソスソスソスソスヘ、ソスソスフ難ソスソスtソスソスナ擾ソスソスソスソスソス -1 ソスナ登ソス^ソスソスソスソス謔、ソスノゑソスソス驍ゥソスナゑソスソスヒ。
datetimepickerソスナは、ShowCheckboxソスvソスソスソスpソスeソスBソスソスATrueソスノゑソスソス驍アソスニで、Null(ソスソスソスン抵ソス)ソスフ費ソスソスソスソスソスソスソスソス驍アソスニになゑソスニ思ソスソスソスワゑソスソスB
ShowCheckboxソスソスTrueソスノゑソスソスソスニ、ソスソスソスtソスフ難ソスソスノチソスFソスbソスNソス{ソスbソスNソスXソスソスソスoソスワゑソスソスB
ソス`ソスFソスbソスNソス{ソスbソスNソスXソスソスヘゑソスソスソスソスニ難ソスソスtソスソスソスヘ包ソスソスソスソスソスEnableソスソスヤになゑソスワゑソスソスB
ソスソスソスフチソスFソスbソスNソス{ソスbソスNソスXソスソスヤは、ソスvソスソスソスOソスソスソスソスソスソスソスソスヘ、CheckedソスvソスソスソスpソスeソスBソスナ鯉ソスソスソスワゑソスソスB
ソスネ会ソスソスソスSQLソスソスNULLソスソスOソスノ変ゑソスソスソスワゑソスソスソスソスH
DBソスノゑソスソスホ会ソスソスソスソストゑソスソスネゑソスソスツ能ソスソスソスソスソスソスソスソスワゑソスソスB
SELECT
CASE WHEN Field1 IS NULL THEN 0 ELSE Field1 END AS Hoge1
FROM
Table
0ソスヘ難ソスソスtソス^ソスノ変奇ソスソスソスソスト擾ソスソスソスソスソスソスソスKソスvソスソスソスソスソス驍ゥソスソスH
ソスソスソスソスソストゑソスソスソスソスソスソスソスソスソスソスソスソス@ソスソスソスラてで、ソスソスソスsソスソスソス驍アソスニゑソスソスナゑソスソスワゑソスソスソスソスB
ソスソスソス閧ェソスニゑソスソスソスソスソスソスソスソスワゑソスソスB