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Fix Try It Yourself Chapter 9 answer

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anthonydb 2022-09-08 09:43:09 -04:00
parent 30727f851f
commit 95ee68aed5
1 changed files with 2 additions and 2 deletions
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Try_It_Yourself/Try_It_Yourself.sql
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@ -1,4 +1,4 @@
---------------------------------------------------------------------------
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-- Practical SQL: A Beginner's Guide to Storytelling with Data, 2nd Edition
-- by Anthony DeBarros
@ -484,7 +484,7 @@ SELECT pls18.stabr,
round( (sum(pls18.totstaff::numeric) - sum(pls17.totstaff)) /
sum(pls17.totstaff) * 100, 1 ) AS chg_2018_17,
round( (sum(pls17.totstaff::numeric) - sum(pls16.totstaff)) /
sum(pls16.hrs_open) * 100, 1 ) AS chg_2017_16
sum(pls16.totstaff) * 100, 1 ) AS chg_2017_16
FROM pls_fy2018_libraries pls18
JOIN pls_fy2017_libraries pls17 ON pls18.fscskey = pls17.fscskey
JOIN pls_fy2016_libraries pls16 ON pls18.fscskey = pls16.fscskey