{"id":10448,"date":"2020-04-06T15:31:26","date_gmt":"2020-04-06T18:31:26","guid":{"rendered":"http:\/\/kb.elipse.com.br\/en\/?p=10448"},"modified":"2020-04-06T15:31:26","modified_gmt":"2020-04-06T18:31:26","slug":"returning-a-value-not-recorded-in-the-database","status":"publish","type":"post","link":"https:\/\/kb.elipse.com.br\/en\/returning-a-value-not-recorded-in-the-database\/","title":{"rendered":"Returning a value not recorded in the Database."},"content":{"rendered":"

This article illustrates how to return a value that has not been recorded in the Elipse E3<\/a> Database yet.<\/p>\n

Many times, you will need to check if a certain value has already been recorded in the Database before you try to add it. This is very important, especially when using a primary key.<\/p>\n

First of all, SetVariableValue<\/em> method atributes the value of a variable created on the Query; thus, you can inform this value as a filter or parameter before the Query takes place. You must also set up the variable’s name (VarName<\/em>) and its (Value<\/em>), which can be a number, a text, or a timestamp.<\/p>\n

EOF <\/em>property, from GetADORecordSet <\/em>method,<\/em> returns one of the following values: True<\/strong>, if the current record position is after the last onde, and False<\/strong>, if the current record position is before the last one.<\/p>\n

With these two methods as resources, you must first search for the desired word:<\/p>\n

\n
    \n
  1. Set Consulta = Screen.<\/span>Item<\/span>(<\/span>“ExistConsult”<\/span>)<\/span><\/li>\n
  2. ‘Screen.<\/span>Item<\/span>(<\/span>“ExistConsult”<\/span>)<\/span>.<\/span>SetVariableValue<\/span>(<\/span>VarName, Value<\/span>)<\/span><\/li>\n
  3. Consulta.SetVariableValue <\/span>“office”<\/span>, Screen.<\/span>Item<\/span>(<\/span>“TextExist”<\/span>)<\/span>.Value<\/span><\/li>\n<\/ol>\n<\/div>\n

    If you can’t retrieve the word, EOF <\/em>property, from GetADORecordSet <\/em>method, returns True<\/strong>:<\/p>\n

    \n
      \n
    1. set RS = Consulta.<\/span>GetADORecordset<\/span>(<\/span>)<\/span><\/li>\n
    2. If RS.eof = true Then<\/span><\/li>\n
    3. msgbox <\/span>“The office does not exist”<\/span><\/li>\n
    4. Else<\/span><\/li>\n
    5. msgbox <\/span>“The office exists”<\/span><\/li>\n
    6. end if<\/span><\/li>\n<\/ol>\n<\/div>\n

      Therefore, you can indicate to the user if the value has already been recorded to the Database or not, or rather, of it will return a value that hasn’t been recorded in the Database.<\/p>\n

      Attached to this article is a demo application developed with Elipse E3 v5.0.437<\/strong>.<\/p>\n

      <\/h3>\n

      Related Articles:<\/strong><\/h3>\n

      Basic VBScript for Elipse E3: Lesson 7 \u2013 GetADORecordSet<\/a><\/p>\n

      Using Databases in E3: Chapter 6 \u2013 Editing Records<\/a><\/p>\n

      <\/h3>\n

      Attachments:<\/h3>\n

      9489.zip<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

      This article illustrates how to return a value that has not been recorded in the Elipse E3 Database yet. 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