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The code sets up strings to hold the name of the query and the search and replace information These are then loaded with the relevant strings The variable Temp is loaded with the SQL statement for the target query A ForNext loop is used to iterate through the SQL statement The Instr function is usually employed to check whether the search string has been found, but in this case a movable start position is used, defined by n from the ForNext loop If the search string has been found, the replacement string is inserted at the correct point into the variable Temp The value n is then incremented by the ForNext loop and another iteration is performed This ensures that every instance of the search string will be changed to the replace string, no matter how many are in the SQL statement This provides a far quicker and better way of making changes to queries than trying to do it manually It is very easy to make a mistake on a manual basis, particularly if the query is long and complicated

Figure 13-12: The Meeting window allows you to send out invitations, track who can attend, and schedule resources for the meeting

Choose to save your changes and either send or not send the meeting announcement or not to save changes

Suppose your users need a report over a specified time interval They want to be able to pick a month and a year as the start point and then pull out all the data for the next n months (where n is a variable supplied by the users) from the first day of that month Some complex processing is required to sort this out Therefore, you need to know how many days are in each month in order to know what to add to the starting point, which basically means a lookup table of some sort However, DateAdd provides the functionality to easily work out the end date based on the starting date and the number of months to increment Enter the following VBA code into a module:

When you receive a meeting request, a message appears in your Inbox with an icon that is different from the normal e-mail icon

1 In Outlook, open the meeting notification or request 2 On the Message tab Respond group, click one of the following:

Now, the logic in our code is fairly simple, as shown in Figure 5 11. We first calculate our Error value by subtracting the MidRange value from the Intensity value returned from the Light sensor. Next, we calculate the Correction value by multiplying the calculated Error by Gain. The Correction value will be applied to our Power value and then passed to the Motor block. The trick is to invert the value between the two motors, so for Motor block B, we will add the Correction to the Power, and for Motor block C, we will subtract the Correction from the Power. You can see in Figure 5 11 this logic put into a NXT-G program. Remember that different robot designs will require some adjustments to the Power, Gain, and MidRange depending on your robot s response.

Function TestDateAdd(Target, Months As Integer) Dim Temp As String If IsDate(Target) = False Then TestDateAdd = "Invalid date" Exit Function End If Temp = Right(Target, 2) If Temp <= 29 Then Temp = "20" & Temp

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3 To send your response with no comments, click Send The Response Now Click OK 4 To include comments with your response, click Edit The Response Before Sending 5 Type your comments and click Send 6 To send no response, click Don t Send A Response, and click OK The meeting is

This code creates two recordset objects, one as an ADO recordset and the other as a standard Access DAO recordset It also sets up some string variables to hold the connection string data The connection string is created with the parameters for your server, database, ID, and password A connection timeout is set and the connection is opened to the database The DAO recordset is set to point to your destination table A new ADO recordset object is created and this is used to open the source table in the SQL Server database using the connection that was created The ADO recordset is then iterated through and new records are added into the destination table using the AddNew method Finally, the objects are set to Nothing to release memory The connection string can also use a DSN:

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OLEDB;DSN=MyDSN;Uid=MyId;Pwd=MyPassword;

Figure 13-13: The Scheduling dialog box allows you to send out invitations, track who can attend, and schedule resources for the meeting

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Figure 5 11. The proportional line-following program does not use a Switch block and instead calculates the nessary power to drive the motors and keep the robot on the line.