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giacecco/3.R

Created July 26, 2015 17:05
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3.R
# calculate the number of unique properties in the target town recorded in LRPP
lrpp_addresses_no <- collect(tbl(src_postgres("olaf"), sql(paste0("SELECT COUNT(*) AS no_of_addresses FROM (SELECT DISTINCT paon, saon, street FROM lr_pp WHERE town = '", target_town , "') AS a", collapse = ""))))$no_of_addresses
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output
> lrpp_addresses_no
[1] 91933
>
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