Update improve_query.md (#418)

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abdrahimm
2023-08-24 20:56:22 +01:00
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parent 9ac657ebbc
commit 66eaea5437

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@@ -3,8 +3,7 @@
1. Improve the following query 1. Improve the following query
``` ```
SELECT count(*) SELECT COUNT(purchased_at)
FROM shawarma_purchases FROM shawarma_purchases
WHERE WHERE purchased_at BETWEEN '2017-01-01' AND '2017-12-31';
YEAR(purchased_at) == '2017'
``` ```