ssrs 2008 pie chart performance improvement

Question

I am querying a single table in my dataset which is relatively small (1.5 million rows). Each row has a column s_flag . When i

select s_flag,count(*) from 'mytable' group by s_flag

the results return in less than a second.

This is what i want to depict on the pie chart,so i am using this as the equivalent to my query: My dataset is a simple select * from mytable .I am adding in the chart's values count(s_flag) and in category groups s_flag .

The problem is that the chart takes minutes to load. My question is: Is there a way to pass the results from select s_flag,count(*) from 'mytable' group by s_flag directly in the chart without using ssrs for the count aggregation?

Answer 1

select s_flag,count(1) as s_flag_count from 'mytable' group by s_flag 

使用s_flag_count图表的值。