problem about calculated-field-Collection of common programming errors

11 years ago
admin
2 minutes

  • Wodzu
    delphi dataset ado field calculated-field
    Scenerio:I want to add a calculated field to given (any) dataset during runtime. I don’t know any other way to obtain a dataset structure other than performing DataSet.Open method.But the Open method causes that atleast one row of a data needs to be transfered from server to client. Then I need to close the DataSet, add field and reopen it. This is an unnecessery overhead in my opinion. Is there a better way of doing this? Please not that I want to be able adding a calcuated field to any dataset

  • kobik
    database delphi calculated-field tdataset
    As in the question’s title, I argue with a colleague about how calculated fields should be used. From my knowledge, calculated fields are created at runtime as in the François’s answer on the question Adding a calculated field to a Query at run time. On the same question there is another answer, from sabri.arslan which suggest to change an existing field to a calculated one(code bellow) variniting:boolean;procedure TSampleForm.dsSampleAfterOpen(DataSet: TDataSet); vari:integer;dmp:tfield; begin

  • Ebad gh
    jquery forms calculated-field
    i want a jquery source to calculate my form<form><input type=”radio” name=”type” value=”1000″> $1000<input type=”radio” name=”type” value=”2000″> $2000<input type=”radio” name=”type” value=”3000″> $3000<input type=”radio” name=”type” value=”4000″> $4000<input type=”radio” name=”type” value=”5000″> $5000<select name=”number”><option name=”number” value=”1″>1</option><option name=”number” value=”1″>2</option><option name=”number”

  • v1n_vampire
    javascript calculated-field
    I can’t get my javascript calculation works for cart.My HTML part got many other input element except those with “price-” and “qty-” id. Somehow the other input element mess up the array I guess. Sample:<input type=”hidden” id=”price-1″ value=”10.50″/> <input type=”hidden” id=”qty-1″ value=”1″/> <input type=”hidden” id=”shipFee-1″ value=”4.00″/> <input type=”hidden” id=”tax-1″ value=”0.70″/><input type=”hidden” id=”price-2″ value=”19.20″/> <input type=”hidden” id

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