left keep or left join which one is give better performance?

[#1]

hi ,

I use left keep and left join in qlikview.I saw the difference in datamodel leftkeep keep table separate  in datamodel  and left join merge the 2 tables into one.but  I have a doubt  which one  give  better performance wise.in both whether leftjoin or left keep. which one is better for performance wise? I do not know pls tell me out. which one is give  better performance

                                               Thankyou,

Regards

madhu

[Gysbert_Wassenaar]

Left keep will be less costly during the script execution. Depending on your data model a joined table may perform better in charts and expressions than two separate linked tables.

[#3]

Thankyou gysbert wassenaar