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sum up of some fields of a table and store...

hi,
i want to sum up some fields in a table for example with query2.sql.add('select sum(1) from zwischentab');, unfort. it doesnt work (with this code, m sure its wrongand i dont know why), what im trying in addition to store this sum in a specific field in another table. hope somebody has a good solution, thx
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ugross
Asked:
ugross
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1 Solution
 
kretzschmarCommented:
hi ugross,

what about this?

query2.close;
query2.clear;
query2.SQL.Add(Select Sum('+Table1.Fields[1].FieldName+') as Summe from tableName');
query2.Open;
tablex.FieldByName('NameOdTheSumField').Value := query2.FieldByName('Summe').Value;
query2.close;

explain a bit more what you want to do

meikl
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ugrossAuthor Commented:
looks good,thx. what im trying to set up is that in the following code the sumvalue in the tablex as u coded it will be taken to paint (canvas-like) points on a form and then show a chart.
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kretzschmarCommented:
hi ugross,

well, then try it and ask again in this q more specific if something not work as you want.

meikl
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ugrossAuthor Commented:
hi again, i tried it but i got an error telling unrecog. expression (as Summe), then tried to change some minor things to find the error, but no joy, i think there could be some basic things in my app. which r not that correct as they should be
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kretzschmarCommented:
hi ugross,

seems that your database-system cannot aliasing fields.
try this change

query2.close;
query2.clear;
query2.SQL.Add(Select Sum('+Table1.Fields[1].FieldName+') from tableName');
query2.Open;
tablex.FieldByName('NameOdTheSumField').Value := query2.Fields[0].Value;
query2.close;

let me know if the error allways appears again

meikl
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ugrossAuthor Commented:
thx for the info, will try, and will inform u.
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ugrossAuthor Commented:
hi again, have tried this all, but no joy im getting an errormsg during runtime, in german it means "merkmal nicht verfuegbar" dont know what it means, in english it means "property not available" i think, any idea
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kretzschmarCommented:
bad,

tell me what database you use,
and how you connect to it (odbc,native, third party)
will try to reproduce

btw. are you from germany?

meikl
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ugrossAuthor Commented:
yes im from germany,
im using the build in components of delphi 3 c/s means im using here 2 table components and a query to make this happen
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kretzschmarCommented:
ja, schon wieder ein deutscher :-))

mit database meinte ich, welche datenbank benutzt du -> access, paradox, mssql, etc.
und wie du die verbindung zur datenbank aufbaust -> odbc-treiber, native bde treiber, bde replacment treiber, etc.

meikl
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ugrossAuthor Commented:
sorry hatte ich vergesse, benutze die bde zur admin., paradoxtabellen, eigentlich nur das was delphi selbst mittels treiber (ueber die bde) zur verfuegung stellt.danke
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kretzschmarCommented:
ok,
sollte überhaupt kein problem sein.
habe noch d3 daheim.
wenn du deine eMail adresse hier hinterläßt, dann kann ich dir morgen oder übermorgen eine kleine Beispielanwendung schicken, die du dann mit deiner app vergleichen kannst.
(nur wenn du willst)

meikl
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ugrossAuthor Commented:
vielen dank mach ich gerne, meine e-mail ist ugross@bloomberg.net (begrenzt auf 2mb atachments), schau ich mir dann gleich an, ich nehme an es haengt an einer winzigkeit. danke
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kretzschmarCommented:
yup,
denke ich auch das es nur ne kleinigkeit ist und 2 MB brauch ich keinesfalls.

ich schicks dir sobald ich fertig bin, nur heute klappts noch nicht, da ich erst spät heimkommen werde. wird also schon frühestens morgen abend, wahrscheinlich aber samstag im laufe des tages.

bis dann

meikl
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ugrossAuthor Commented:
wenns am wochenende ist dann schicks doch bitte an die e-mail grossu@t-online.de die ist zuhause dann hab ichs gleich in der ide, super, vielen dank
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