The following steps guides you to design ssrs rdl report using table.
Data Regions category.



Once you drop the table item, the Table renders with two rows and three columns in the design area.

Each cell in the table is nothing but a simple textbox. The cell in a list contains a rectangle. You can replace a default report item with a different report item.
There are a few different ways to assign the fields into a table:
DATA panel.DATA panel and expand the required dataset.


Select the table cell and click on the Data assign menu icon to open data assign menu.
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Click on the required data field name in the menu.

The fields of the dataset which is assigned to
Datasetproperty of table will be listed in the menu.
Now, the respective field will be assigned to the respective cell like below.

Text Editor icon to open the Text Editor Dialog.
Text Editor Dialog, enter the desired content or expression directly.


Expression option to open the Expression Editor.

OK.

[Sales] expression will now appear in the Text Editor Dialog.

Save to assign [Sales] data field into the respective tablix cell.

You can set the header text for each column of the table using Text Editor dialog
Text Editor icon to open the Text Editor dialog.
Text Editor dialog will open as shown below.

Save button.


To improve the report readability, we can resize the table row height and column width.




A simple table design will look like below.

Download the above report design from link.