Some surveys ship several linked fixed-width files that share a respondent
key (e.g. GSS cycle 16, "Aging and Social Support", 2002, whose MAIN, CG4,
CG6 and CR files all join on `RECID`, with the person weight `WGHT_PER`
living only in MAIN). `get_pumf()` returns the survey's primary module;
`pumf_module()` returns one of its sibling modules **on the same DuckDB
connection**, so the two tbls are joinable on the shared key without opening
a second connection.
Arguments
- tbl
A lazy tbl returned by [get_pumf()] for a multi-module survey.
- module
Name of the module to open (e.g. `"CG4"`). See the survey's
registry entry for available module ids.
Value
A lazy `dplyr::tbl()` for the requested module, backed by the same
connection as `tbl`.
Examples
if (FALSE) { # \dontrun{
main <- get_pumf("GSS", "2002") # primary module (MAIN), has WGHT_PER
cg4 <- pumf_module(main, "CG4") # caregiving module, same connection
dplyr::left_join(main, cg4, by = "RECID")
} # }
