Original subtitles

Instructor: All right,

so we've kind of mentioned this topic already,

but if a report page has a number of slicers,

you could add an apply all slicer button

to your report page that basically tracks all

of the slicers and can either apply,

or clear all of those slicers with a single click.

The biggest reason for this is the reduction

in the total number of visual queries that are being made.

You're transforming multiple visual queries

that are coming from each of the slicers,

and combining them into a single query.

So again, it's really all about performance optimization.

All right, so when you click on

the apply all slicers button,

a new blank unformatted button is added to the report page,

just like what you're seeing on the slide here.

And again, the main reason why you're adding this button

is to be able to apply all of the slicers

within a single click or clear all of the slicers

in a single click.

Keep in mind that this button will impact all

of the slicers within a report page,

and you can't really pick or choose

which slices are impacted.

It's really just an all or nothing approach.

Now, some of the other important pieces to consider here

are that you can actually have multiple apply all,

or clear all slicer buttons within a page.

And this comes in really handy when you want to add them

in different locations or add to a filter pane

that's collapsible like we built in this project.

And these buttons can be formatted just like any

of the other buttons in Power BI.

So feel free to get as creative

as you want and match this apply,

or clear all slicers button to your report theme and layout.

So just to mention this,

we're not really gonna work through adding one

of these slicers into our Power BI report.

Honestly, it's really straightforward.

You've already created a bunch

of different buttons throughout this course,

and this really isn't much different.

So again, this is just a fun exercise

that you can work through on your own.

But what I would like to do is kind of talk

through a scenario here and pretend that we have

a report that has 10 core visuals on it,

and we've added four slicers that are built

into a slicer pane.

So we've got 14 items in total, 10 are visuals,

and four are slicers.

Now, every time you select a value within a slicer,

those 10 non-slicer visuals will change based

on the selection that's made.

So let's say that you select two options

from the first two slicers, three from the third slicer,

and one option from the fourth slicer.

In total, you've made eight selections,

which then need to propagate to the visuals,

but keep in mind that it's just not eight selections,

it's eight selections from slicers times 10 visuals.

So we've got 80 visual queries that need to be updated,

and it's highly likely that many of those are unnecessary,

or they're competing.

So if you had used an apply all slicers button,

you could actually bring that total

from 80 down to just eight visual queries.

Again, that's gonna significantly improve

your report performance.

Again, there's always outliers in extenuating circumstances,

but I just wanted to kind of use this example

to demonstrate why this feature is super important

when you've added multiple slicers within a page.

All right, up next,

we're gonna dig into the performance analyzer a little bit.