Please assist to fix the query below: use SQLBook; WITH oz as ( SELECT zc.zcta5, (COUNT(DISTINCT c.HouseholdId) / MAX(zc.tothhs*1.0) ) as penetration, zc.tothhs, zc.medianhhinc, zc.pctbachelorsormore), ozm as ( SELECT AVG(medianhhinc) as avgmedianhhinc, STDEV(medianhhinc) as stdmedianhhinc, AVG(pctbachelorsormore) as avgpctbachelorsormore, STDEV(pctbachelorsormore) as stdpctbachelorsormore FROM oz ), ozs as ( SELECT oz.*, ((oz.medianhhinc - ozm.avgmedianhhinc) / ozm.stdmedianhhinc ) as z_medianhhinc, ((oz.pctbachelorsormore - ozm.avgpctbachelorsormore) / ozm.stdpctbachelorsormore) as z_pctbachelorsormore FROM oz CROSS JOIN ozm ) SELECT TOP 10 ozs,*, SQRT(SQUARE(ozs.z_medianhhinc - ozs10021.z_medianhhinc) + SQUARE(ozs.z_pctbachelorsormore – ozs10021.z_pctbachelorsormore) ) as dist FROM ozs CROSS JOIN (SELECT ozs.* FROM ozs WHERE ozs.zcta5 = '10021') ozs10021 ORDER BY dist ASC
SQL
SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
Queries
A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
Please assist to fix the query below:
use SQLBook;
WITH oz as (
SELECT zc.zcta5,
(COUNT(DISTINCT c.HouseholdId) /
MAX(zc.tothhs*1.0) ) as penetration,
zc.tothhs, zc.medianhhinc, zc.pctbachelorsormore),
ozm as (
SELECT AVG(medianhhinc) as avgmedianhhinc,
STDEV(medianhhinc) as stdmedianhhinc,
AVG(pctbachelorsormore) as avgpctbachelorsormore,
STDEV(pctbachelorsormore) as stdpctbachelorsormore
FROM oz
),
ozs as (
SELECT oz.*,
((oz.medianhhinc - ozm.avgmedianhhinc) / ozm.stdmedianhhinc
) as z_medianhhinc,
((oz.pctbachelorsormore - ozm.avgpctbachelorsormore) /
ozm.stdpctbachelorsormore) as z_pctbachelorsormore
FROM oz CROSS JOIN ozm
)
SELECT TOP 10 ozs,*,
SQRT(SQUARE(ozs.z_medianhhinc - ozs10021.z_medianhhinc) +
SQUARE(ozs.z_pctbachelorsormore –
ozs10021.z_pctbachelorsormore)
) as dist
FROM ozs CROSS JOIN
(SELECT ozs.* FROM ozs WHERE ozs.zcta5 = '10021') ozs10021
ORDER BY dist ASC
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