Execution plan

Cost

select 0%

Parallelism(Gather Streams) 0%

Sort(Distinct Sort) 0%

Parallelism(Repartition Streams) 0%

Hash Match(Partial Aggregate) 3%

Compute Scalar 0%

Clustered Index Scan[tblGLJnlEntrySum].tblGLJnlEntrySum_PK 97%

Inaddition i am getting message like below

/*

Missing Index Details

The Query Processor estimates that implementing the following index could improve the query cost by 97.4146%.

*/

/*

CREATE NONCLUSTERED INDEX [<Name of Missing Index, sysname,>]

ON [dbo].[tblGLJnlEntrySum] ([DivCode])

INCLUDE ([glPeriodYear],[glPeriodMonth])

*/

so is that means that i have to create suc index mentioned above?