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I think that could be done as per steps listed below:<br />
<br />
Right click on the grouping that you want to total - in your case the details group. (You can find a list of groups in the Row Groups pane of the designer window.<br />
<br />
Select &quot;Add Total -&gt; Before&quot; (or after)<br />
<br />
You should now have a row where to add the total and SSRS will try to figure out what total to insert. If that looks ok leave it and if not you will need to edit the expression of a cell.<br />
<br />
In the cell you want your total, right click and select Expression. In the Expression window enter &nbsp; &nbsp;=SUM(Fields!Count.Value)
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I think that could be done as per steps listed below:

Right click on the grouping that you want to total - in your case the details group. (You can find a list of groups in the Row Groups pane of the designer window.

Select "Add Total -> Before" (or after)

You should now have a row where to add the total and SSRS will try to figure out what total to insert. If that looks ok leave it and if not you will need to edit the expression of a cell.

In the cell you want your total, right click and select Expression. In the Expression window enter    =SUM(Fields!Count.Value)

Thean S

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I want sum of Count column, can you please share expression for this or how to do this? the number of rows of date and count column is not fixed, it will vary every day.<a href="https://filedb.experts-exchange.com/incoming/2018/12_w50/1406898/Untitled.png" target="_blank" title="Untitled.png (3 KB)"><img alt="Untitled.png" class="file-block lazyload" style="max-width: 213px;" data-src="https://filedb.experts-exchange.com/incoming/2018/12_w50/1406898/Untitled.png" /></a>
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I want sum of Count column, can you please share expression for this or how to do this? the number of rows of date and count column is not fixed, it will vary every day.

SSRS expression - SQL Server Reporting Services

Microsoft SQL Server is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.SQL Server is available in multiple versions, typically identified by release year, and versions are subdivided into editions to distinguish between product functionality. Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning.

Microsoft SQL Server

SQL Server Reporting Services (SSRS) is a server-based report generation software system from Microsoft. It can prepare and deliver a variety of interactive and printed reports and is administered via a web interface or its web service. Its web services interface also supports the development of custom reporting applications. Finally, SSRS can also be integrated with SharePoint. SSRS competes with other business intelligence tools, most prominently Crystal Reports.

SSRS

A database report is the formatted result of database queries and contains useful data for decision-making and analysis. Most good business applications contain a built-in reporting tool; this is simply a front-end interface that calls or runs back-end database queries that are formatted for easy application usage.

DB Reporting Tools

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.