use total population in CDBG

[damonmcc]

related to #1348

according to HUD's data dictionary, the column LOWMOD_PCT isn't what we expect because the denominator LOWMODUNIV is "Persons with the potential for being deemed Low-, Moderate- and Middle-income" rather than the total population

so we have to get total population from a different dataset

changes

1. add dcp_censusdata_blocks to get the total population of each census block
2. change where census blocks are grouped to census block groups.
   • This helped make the new data usable because it doesn't have a column with GEOID values to parse and determine the census block group. So joining all census block data before grouping seem best.
3. use new total population data

[fvankrieken]

I think this all seems fine for the incremental change needed. I do think we should sit down with some quick white boarding to simplify the repo

[fvankrieken]

Dbt tests currently failing though

[damonmcc]

Dbt tests currently failing though

a column in dcp_censusdata_blocks is named pop1.1 and sqluff seems to think it "refers to table/view not found in the FROM clause or found in ancestor statement"

gonna try different single/double quote combos (locally first)

edit: might have to ignore it for now, couldn't fix it with quotes

[fvankrieken]

Dbt tests currently failing though

a column in dcp_censusdata_blocks is named pop1.1 and sqluff seems to think it "refers to table/view not found in the FROM clause or found in ancestor statement"

gonna try different single/double quote combos (locally first)

edit: might have to ignore it for now, couldn't fix it with quotes

Yeah that seems like a sqlfluff bug