In this video, we are going to read data which you can command from Amazon Dynamic DB table using this
measurement console.
So please open the console.
Go to Dynamo DB tables.
Open the order table.
Click the explore table items and come this page.
So now we can perform some operations on this order table because we have inserted two items in the
last video.
Now we can perform scan and query operations for these two items.
So as you can see that if you click the scan button and click the run button.
We can return all items we perform scan operation.
So you can basically say, give me everything from the table.
So we can also provide filter operations with scan command.
You can see in here, if you expand these filters, you can apply some filter attributes.
For example, we can say that attribute name is order, date and type string and we can use that greater
than operation and we can specify in here.
Let me copy this line and paste in here.
So if we say that, please get me the greater than this order, right?
Run this command.
So as you can see that there is no item with that place.
So if we select the different value, if you run this command this time, you can see that we can run
the greater than condition over the order date column and also we can add additional operations.
For example, let me run again and the filter which is the status column and we can perform that.
Please get me the status with the value of the delivery.
So click the run and see that the item returned for the status of the delivery items.
So see that we have executed this scan operation with the greater than filter expressions and you can
see that all conditions in here, there is a lots of condition equal to not equal to less than or equal
to, greater than, equal to and so on.
So everything that you seen in here is an attribute name type condition and the value.
All these things can be done with the programmatically that we can also do it using the Ac-dc package
in the upcoming videos.
So it is good to know that A.B exposing all these APIs like scan command and query command, that we
can provide the filter expressions with all these values.
So we can call all these dynamic DB APIs, both from the A management console, a double Excel dynamo,
the SDK and API.
Also, we can do all these operations with programmatically.
We will develop these scan and query command operations when developing our microservice lambda functions
with using the SDK package.
That's why I would like to show these pages in order to be familiar when developing our scan and query
operations with the filter expressions, we will do all these operations with programmatically.
So we have created the filter expression and pass the filter expression to the scan command and run
this command and see filter value from this scan command, including the filter expression.
So Dynamo DB take our scan command with the filter expression and return back to the result.