Info about mkpf and mseg

Question

I need to modify a report that brings all the production of all our materias for a given period of time.
The code joins both tables mkpf and mseg and ask for the date:
mkpf-budat between s_budat-low and s_budat-high
This query is taking A LOT of time and I need to optimize it. All of the fields needed are in the mseg, but the date is in mkpf. In mseg there is a field called production date (hdat) Is this field the same than the budat located in mkpf (I want to query only one table)?  If not, what do I have to do to optimize my query????
TIA
Query:
select smblnr smjahr sbwart smatnr swerks smenge  
appending  corresponding fields of table t_mseg  
from  mseg as s inner join mkpf as k             
on smblnr = kmblnr and                       
smjahr = kmjahr                           
where                                           
( sbwart eq lit_101 or sbwart eq lit_102 )
and s~matnr in s_matnr                          
and s~werks in s_werks_full                     
and k~budat between s_budat-low and s_budat-high
and s~bukrs = p_bukrs.

Answer 1

Well MSEG has an index on MATNR and WERKS. Try changing the order of the where:
select s~mblnr s~mjahr s~bwart s~matnr s~werks s~menge
appending corresponding fields of table t_mseg
from mseg as s inner join mkpf as k
on s~mblnr = k~mblnr and
s~mjahr = k~mjahr
where s~matnr in s_matnr
and s~werks in s_werks_full
and ( s~bwart eq lit_101 or s~bwart eq lit_102 )
and k~budat between s_budat-low and s_budat-high
and s~bukrs = p_bukrs.
Also - make sure s_matnr is not empty.
Also make sure s_matnr is either 'I'ncluding either ranges or single values. Indexes don't work very well with 'E'xcluding, patterns or NE.
Rob
Message was edited by: Rob Burbank