... see that in almost all cases, using SQL for grouping (GROUPBY) provides the best performance. However, a static SQL statement is not very flexible.The SQL statement might be too complex, ... adds an unnecessary burdento a database server. Because database servers are much harder to scale out usinginexpensive commodity hardware than reporting servers, it makes sense to haveconversion ... In addition, complex SQL queries are hard to maintainand troubleshoot.The following are some tips to help strike a balance between the grouping capabilities ofSSRS and SQL: . Ideally and where...