Merge households and individuals datasets

[Ottavia Veroux]

I am using a dataset divided into several different files, some of those are at the household level and some at the individual level. I want to work at the individual level but having information from the households too, but I am having problem merging files with two different levels. Households are identified by a code, let's say "hhid", and individual by both households and individual code "indid".
Just to show an example:

hh.dta
hhid
1
2
3
4

ind.dta
hhid indid
1 1
1 2
2 1
3 1
4 1
4 2
4 3

How can I merge the two files, in a way in which the variable of the household is matched to all individuals in that household?
I hope my question is enough clear, thanks!

[Rich Goldstein]

it appears that your hh data has only 1 occurrence of each id while your indid data may have more than one occurrence of each hhid; thus, if your hh data is in memory use a 1:m merge while if your ind data is in memory use an m:1 merge; see

help merge