Actually our reader m-b commented that he prefers to convert a range to a table and then employ table formulas instead of named ranges. A Table in Excel A table is a feature in Excel that makes it easier to format and analyze a set of data points in a spreadsheet. In Excel onwards, you can also use the table formulas to extract data from a table. Completely change the look and feel of your data with a few mouse clicks Summarize by adding row for Total:
Microsoft Scripting Guy, Ed Wilson, is here. Dan recently joined Microsoft as a senior premiere field engineer in the U. Previously he served as an Enterprise Messaging team lead, and was an Exchange Server consultant for many years.
Overall Dan has over 15 years of experience working with Exchange Server in an enterprise environment, and he tries to keep his skillset sharp in the supporting areas of Exchange, such as Active Directory, Hyper-V, and all of the underlying Windows services.
Here's Dan… In my last blog post, we established some best practices for organizing and streamlining our script so it is more useable by others and ourselves in the future. Now let me turn your attention to some speed improvement techniques I picked up at a my last job before joining Microsoft.
Years ago, I wrote the 1. X version of the Generate-MailboxBillingReportwhich generated monthly billing reports in Excel for the customers for which my team provided messaging services. Although this process worked well and did everything we needed it to, it was taking over 2 hours and 45 minutes to complete, as you can see here: When I first started writing the script, I focused on the quality and detail of the output versus the speed.
But after some jovial harassment by my coworkers to improve the speed, I sat down to see what I could do. I focused on the optimizations techniques covered in this post, and as a result of the script reconfiguration, I was able to come up with Exchange Mailbox Billing Report Generator v2.
Xwhich reduced the execution time: I hope some of them also provide some benefit for you. This is especially true if you have never used the optimization techniques discussed here, because you could end up making more work for yourself trying to implement something brand new at the same time you are trying to make your script functional.
These recommendations can be big bites depending on your skill level. Using my mailbox billing report generation script as an example, implementing the script optimization techniques discussed here would have been much harder and taken longer if I tried them in the beginning when I was also trying to get the script to produce the output we wanted.
Leverage Measure-Command to time sections of code Learning how long certain parts of your script take to execute, such as a loop or even a part of a loop, will provide you valuable insight into where you need to focus your speed improvements.
Windows PowerShell gives you a couple of ways to time how long a block of script takes to execute. Until recently, I used the New-Object System. Stopwatch command to track the amount of time taken in various parts of my scripts.
I used this cmdlet in my script to quickly learn where the majority of time was being spent in the big mailbox processing loop.
I did this by using multiple instances of this cmdlet inside the loop, essentially dividing the loop into multiple sections, which showed me how long each part of that loop was taking.
The results for each section varied in the reported milliseconds, but some stood out as taking more time, which allowed me to decide which sections to focus on. I encourage you to use this cmdlet any time you want to quickly check how long part of your script is taking to execute.
For more information, see Using the Measure-Command Cmdlet. Query for multiple objects: Same time or individually? One of the major time delays in my script was when it was gathering information for each mailbox from multiple locations, one mailbox at a time. Performing these multiple individual queries one mailbox object at a time was very costly in regards to execution time because individual data query sessions were being opened and closed serially one at a time per cmdlet per mailbox.
One second may not sound like a long time for each individual mailbox, but doing that for all mailboxes takes 1 minute 40 seconds.
What if you could query all mailboxes in a single query by using the Get-MailboxStatistics —Server switch, and this single query takes 30 seconds? Now imagine if you had two more queries to perform for each mailbox ActiveSync and Lync that also take one second each per mailbox, or 30 seconds as bulk queries.
As you can see the individual queries can add up both in the number of queries you have to run and the number of objects you have to run them for. Therefore, the more time-efficient approach if the cmdlet supports it and you can leverage the output in your scriptis to gather as many objects as possible at the same time in a single cmdlet call.
Going back to my example script, simply switching from using Get-MailboxStatistics to query one mailbox at a time to bulk querying all of the mailbox data on a per-server basis shaved off about 45 minutes in the script execution time.
X version of my script, the mailbox statistics lookup was performed one mailbox at a time as a part of a large ForEach loop that processes each mailbox individually: X version of my script, the mailbox statistics lookup was performed for all non-disconnected mailboxes housed on all of the database availability group DAG Exchange servers, and temporarily stored in a data table: And then back in the per mailbox ForEach loop, the individual mailbox data was pulled from the data table versus from individual Get-MailboxStatistics queries.
Although this new method of querying the mailbox statistics requires a lot more script and requires that it is broken into two separate pieces an initial data gathering and then a query against the gathered datathe speed increase of the script was well worth it.
At least it got my old coworkers off my back.If the condition is false, Else part of the script is Executed if schwenkreis.com statement An if statement followed by one or more ElseIf Statements, that consists of boolean expressions and then followed by an optional else statement, which executes when all the condition becomes false.
nested if statements An if or elseif statement inside. schwenkreis.com is a platform for academics to share research papers. C++ Decision Making Statements. Suppose the input is 90 the output would be because here the if and the else if condition both failed and therefore statement in else block got executed.
The output of the above program is } switch statement: If there are a number of decision making conditions instead of making an schwenkreis.com construct, the. (TCO 3) What VBScript decision-making statement would be for a single condition and two alternative code blocks to be executed?
(TCO 3) What produces the same result as the following pseudocode? (TCO 3) In VBScript, which relational operator is used to test for equality?
(TCO 3) Boolean expressions can have which outcomes? /5(1). An if statement can be followed by an optional else if else statement, which is very usefull to test various conditions using single if else if statement.
When using if, else if, else statements there are few points to keep in mind. the While decision always comes near the top of the chart/code. the condition the while statement is checking for must be true. it is proper convention to place the decision before the block of code that will be repeated.A Note on Loop Construction Style You may have noticed that in the flowcharts and pseudocode presented.
that is. for instance.