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 problem in the recording of empty date |
| Sat, Feb 18 2006 1:48 PM | Permanent Link |
"Gabriel" | Delphi 7
dbisam 4.22 b5 I am using a query to record the information. But when a date is empty, it is recorded 12.30.1899 How to do so that the recorded date is empty? thanks Gabriel Brazil |
| Sat, Feb 18 2006 4:59 PM | Permanent Link |
"Mike Shkolnik" | > How to do so that the recorded date is empty?
yourDataset.FieldByName('yourDateFieldName).Clear; or yourDataset.FieldByName('yourDateFieldName).Value := NULL; -- With best regards, Mike Shkolnik E-mail: mshkolnik@scalabium.com WEB: http://www.scalabium.com |
| Sat, Feb 18 2006 5:47 PM | Permanent Link |
"Gabriel" | Hello Mike:
I use query: if RxDateEdit1.Text <> ' / / ' then DM.Query0.ParamByName('T09_Baixa').AsDate := RxDateEdit1.Date else DM.Query0.ParamByName('T09_Baixa').Value := Null; === using NULL display the message: : T09_BAIXA is of an uncknow type would you have another suggestion? thank´s Gabriel "Mike Shkolnik" <mshkolnik2002@ukr.net> escreveu na mensagem news:0FBE089A-97AE-4E28-B23F-04506FF58239@news.elevatesoft.com... >> How to do so that the recorded date is empty? > yourDataset.FieldByName('yourDateFieldName).Clear; > or > yourDataset.FieldByName('yourDateFieldName).Value := NULL; > > -- > With best regards, Mike Shkolnik > E-mail: mshkolnik@scalabium.com > WEB: http://www.scalabium.com > > |
| Sun, Feb 19 2006 5:00 PM | Permanent Link |
Tony Pomfrett | Gabriel,
Are you trying to set a parameter or a field value? If setting a parameter, you need to define the parameter and its type. The error message below is informing you that the parameter type has not been set. If you are trying to set a field value, use FieldByName instead of ParamByName. Tony. Gabriel wrote: > Hello Mike: > > I use query: > > > if RxDateEdit1.Text <> ' / / ' then > DM.Query0.ParamByName('T09_Baixa').AsDate := RxDateEdit1.Date > else > DM.Query0.ParamByName('T09_Baixa').Value := Null; > === > > using NULL display the message: > : T09_BAIXA is of an uncknow type > > would you have another suggestion? > > thank´s > > Gabriel > > > "Mike Shkolnik" <mshkolnik2002@ukr.net> escreveu na mensagem > news:0FBE089A-97AE-4E28-B23F-04506FF58239@news.elevatesoft.com... > >>>How to do so that the recorded date is empty? >> >>yourDataset.FieldByName('yourDateFieldName).Clear; >>or >>yourDataset.FieldByName('yourDateFieldName).Value := NULL; >> >>-- >>With best regards, Mike Shkolnik >>E-mail: mshkolnik@scalabium.com >>WEB: http://www.scalabium.com >> >> > > > |
| Sun, Feb 19 2006 5:42 PM | Permanent Link |
"Gabriel" | delphi 7
dbisam 4.22 B5 DM.Query0.Close; DM.Query0.SQL.Clear; DM.Query0.SQL.Add('Update T09_ACER '); DM.Query0.SQL.Add('Set '); DM.Query0.SQL.Add('T09_Baixa = :T09_Baixa '); DM.Query0.SQL.Add('Where '); DM.Query0.SQL.Add('T09_NumAcervo = 100 '); if T09_Baixa.Text <> ' / / ' then DM.Query0.ParamByName('T09_Baixa').AsDate := T09_Baixa.Date else DM.Query0.ParamByName('T09_Baixa').AsDate := ????; // I need to save NULL or Nil or "" or empty // and no 12.30.1899 DM.Query0.ExecSQL; help me. Gabriel "Tony Pomfrett" <tonyp@aline.com.au> escreveu na mensagem news:43F8EA4F.6020001@aline.com.au... > Gabriel, > > Are you trying to set a parameter or a field value? > > If setting a parameter, you need to define the parameter and its type. The > error message below is informing you that the parameter type has not been > set. > > If you are trying to set a field value, use FieldByName instead of > ParamByName. > > Tony. > > Gabriel wrote: >> Hello Mike: >> >> I use query: >> >> >> if RxDateEdit1.Text <> ' / / ' then >> DM.Query0.ParamByName('T09_Baixa').AsDate := RxDateEdit1.Date >> else >> DM.Query0.ParamByName('T09_Baixa').Value := Null; >> === >> >> using NULL display the message: >> : T09_BAIXA is of an uncknow type >> >> would you have another suggestion? >> >> thank´s >> >> Gabriel >> >> >> "Mike Shkolnik" <mshkolnik2002@ukr.net> escreveu na mensagem >> news:0FBE089A-97AE-4E28-B23F-04506FF58239@news.elevatesoft.com... >> >>>>How to do so that the recorded date is empty? >>> >>>yourDataset.FieldByName('yourDateFieldName).Clear; >>>or >>>yourDataset.FieldByName('yourDateFieldName).Value := NULL; >>> >>>-- >>>With best regards, Mike Shkolnik >>>E-mail: mshkolnik@scalabium.com >>>WEB: http://www.scalabium.com >>> >>> >> >> |
| Mon, Feb 20 2006 2:51 AM | Permanent Link |
"Iztok Lajovic" | Gabriel,
try to assign blank string to date (not tested): > DM.Query0.Close; > DM.Query0.SQL.Clear; > DM.Query0.SQL.Add('Update T09_ACER '); > DM.Query0.SQL.Add('Set '); > DM.Query0.SQL.Add('T09_Baixa = :T09_Baixa '); > DM.Query0.SQL.Add('Where '); > DM.Query0.SQL.Add('T09_NumAcervo = 100 '); > > if T09_Baixa.Text <> ' / / ' then > DM.Query0.ParamByName('T09_Baixa').AsDate := T09_Baixa.Date > else > DM.Query0.ParamByName('T09_Baixa').AsString := ''; <<<< correct > this line > DM.Query0.ExecSQL; > Iztok Lajovic |
| Mon, Feb 20 2006 5:43 AM | Permanent Link |
"Gabriel" | Hello. Iztok. This is not also correct.
EconvertError with message '' is not a valid date. "Iztok Lajovic" <iztok.lajovic@amis.net> escreveu na mensagem news:0C1F0AA2-A3FB-4D21-841C-E7C81537F15E@news.elevatesoft.com... Gabriel, try to assign blank string to date (not tested): > >> DM.Query0.Close; >> DM.Query0.SQL.Clear; >> DM.Query0.SQL.Add('Update T09_ACER '); >> DM.Query0.SQL.Add('Set '); >> DM.Query0.SQL.Add('T09_Baixa = :T09_Baixa '); >> DM.Query0.SQL.Add('Where '); >> DM.Query0.SQL.Add('T09_NumAcervo = 100 '); >> >> if T09_Baixa.Text <> ' / / ' then >> DM.Query0.ParamByName('T09_Baixa').AsDate := T09_Baixa.Date >> else >> DM.Query0.ParamByName('T09_Baixa').AsString := ''; <<<< correct >> this line >> DM.Query0.ExecSQL; >> > > Iztok Lajovic > |
| Mon, Feb 20 2006 5:45 AM | Permanent Link |
"Mike Shkolnik" | Did you try the call the Clear method as I suggested in my first reply?
if T09_Baixa.Text <> ' / / ' then DM.Query0.ParamByName('T09_Baixa').AsDate := T09_Baixa.Date else DM.Query0.ParamByName('T09_Baixa').Clear -- With best regards, Mike Shkolnik EMail: mshkolnik@scalabium.com http://www.scalabium.com "Gabriel" <mtg.comercio@bol.com.br> wrote in message news:FA9A9F11-5587-4FB0-9C21-DC228F1F0105@news.elevatesoft.com... > delphi 7 > dbisam 4.22 B5 > > > DM.Query0.Close; > DM.Query0.SQL.Clear; > DM.Query0.SQL.Add('Update T09_ACER '); > DM.Query0.SQL.Add('Set '); > DM.Query0.SQL.Add('T09_Baixa = :T09_Baixa '); > DM.Query0.SQL.Add('Where '); > DM.Query0.SQL.Add('T09_NumAcervo = 100 '); > > if T09_Baixa.Text <> ' / / ' then > DM.Query0.ParamByName('T09_Baixa').AsDate := T09_Baixa.Date > else > DM.Query0.ParamByName('T09_Baixa').AsDate := ????; // I need to > save NULL or Nil or "" or empty > > // and no 12.30.1899 > DM.Query0.ExecSQL; > > > help me. > > Gabriel > > > > "Tony Pomfrett" <tonyp@aline.com.au> escreveu na mensagem > news:43F8EA4F.6020001@aline.com.au... > > Gabriel, > > > > Are you trying to set a parameter or a field value? > > > > If setting a parameter, you need to define the parameter and its type. The > > error message below is informing you that the parameter type has not been > > set. > > > > If you are trying to set a field value, use FieldByName instead of > > ParamByName. > > > > Tony. > > > > Gabriel wrote: > >> Hello Mike: > >> > >> I use query: > >> > >> > >> if RxDateEdit1.Text <> ' / / ' then > >> DM.Query0.ParamByName('T09_Baixa').AsDate := RxDateEdit1.Date > >> else > >> DM.Query0.ParamByName('T09_Baixa').Value := Null; > >> === > >> > >> using NULL display the message: > >> : T09_BAIXA is of an uncknow type > >> > >> would you have another suggestion? > >> > >> thank´s > >> > >> Gabriel > >> > >> > >> "Mike Shkolnik" <mshkolnik2002@ukr.net> escreveu na mensagem > >> news:0FBE089A-97AE-4E28-B23F-04506FF58239@news.elevatesoft.com... > >> > >>>>How to do so that the recorded date is empty? > >>> > >>>yourDataset.FieldByName('yourDateFieldName).Clear; > >>>or > >>>yourDataset.FieldByName('yourDateFieldName).Value := NULL; > >>> > >>>-- > >>>With best regards, Mike Shkolnik > >>>E-mail: mshkolnik@scalabium.com > >>>WEB: http://www.scalabium.com > >>> > >>> > >> > >> > |
| Mon, Feb 20 2006 6:01 AM | Permanent Link |
"Gabriel" | not also:
edatabase error with message query0: field 'T09_BAIXA' is of unknown type. "Mike Shkolnik" <mshkolnik2002@ukr.net> escreveu na mensagem news:31472DC0-089C-4008-B9CC-54A3DA62BD22@news.elevatesoft.com... > Did you try the call the Clear method as I suggested in my first reply? if T09_Baixa.Text <> ' / / ' then DM.Query0.ParamByName('T09_Baixa').AsDate := T09_Baixa.Date // its OK else DM.Query0.ParamByName('T09_Baixa').Clear // error > -- > With best regards, Mike Shkolnik > EMail: mshkolnik@scalabium.com > http://www.scalabium.com > > "Gabriel" <mtg.comercio@bol.com.br> wrote in message > news:FA9A9F11-5587-4FB0-9C21-DC228F1F0105@news.elevatesoft.com... >> delphi 7 >> dbisam 4.22 B5 >> >> >> DM.Query0.Close; >> DM.Query0.SQL.Clear; >> DM.Query0.SQL.Add('Update T09_ACER '); >> DM.Query0.SQL.Add('Set '); >> DM.Query0.SQL.Add('T09_Baixa = :T09_Baixa '); >> DM.Query0.SQL.Add('Where '); >> DM.Query0.SQL.Add('T09_NumAcervo = 100 '); >> >> if T09_Baixa.Text <> ' / / ' then >> DM.Query0.ParamByName('T09_Baixa').AsDate := T09_Baixa.Date >> else >> DM.Query0.ParamByName('T09_Baixa').AsDate := ????; // I need to >> save NULL or Nil or "" or empty >> >> // and no 12.30.1899 >> DM.Query0.ExecSQL; >> >> >> help me. >> >> Gabriel >> >> >> >> "Tony Pomfrett" <tonyp@aline.com.au> escreveu na mensagem >> news:43F8EA4F.6020001@aline.com.au... >> > Gabriel, >> > >> > Are you trying to set a parameter or a field value? >> > >> > If setting a parameter, you need to define the parameter and its type. > The >> > error message below is informing you that the parameter type has not > been >> > set. >> > >> > If you are trying to set a field value, use FieldByName instead of >> > ParamByName. >> > >> > Tony. >> > >> > Gabriel wrote: >> >> Hello Mike: >> >> >> >> I use query: >> >> >> >> >> >> if RxDateEdit1.Text <> ' / / ' then >> >> DM.Query0.ParamByName('T09_Baixa').AsDate := RxDateEdit1.Date >> >> else >> >> DM.Query0.ParamByName('T09_Baixa').Value := Null; >> >> === >> >> >> >> using NULL display the message: >> >> : T09_BAIXA is of an uncknow type >> >> >> >> would you have another suggestion? >> >> >> >> thank´s >> >> >> >> Gabriel >> >> >> >> >> >> "Mike Shkolnik" <mshkolnik2002@ukr.net> escreveu na mensagem >> >> news:0FBE089A-97AE-4E28-B23F-04506FF58239@news.elevatesoft.com... >> >> >> >>>>How to do so that the recorded date is empty? >> >>> >> >>>yourDataset.FieldByName('yourDateFieldName).Clear; >> >>>or >> >>>yourDataset.FieldByName('yourDateFieldName).Value := NULL; >> >>> >> >>>-- >> >>>With best regards, Mike Shkolnik >> >>>E-mail: mshkolnik@scalabium.com >> >>>WEB: http://www.scalabium.com >> >>> >> >>> >> >> >> >> >> > > |
| Mon, Feb 20 2006 12:30 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc.  timyoung@elevatesoft.com | Gabriel,
Use the TDBISAMParam.Clear method: if T09_Baixa.Text <> ' / / ' then DM.Query0.ParamByName('T09_Baixa').AsDate := T09_Baixa.Date else begin DM.Query0.ParamByName('T09_Baixa').DataType:=ftDate; // Be sure to set the data type of the parameter DM.Query0.ParamByName('T09_Baixa').Clear; end; DM.Query0.ExecSQL; -- Tim Young Elevate Software www.elevatesoft.com |
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