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-# Project Notes - SQL Interlude - Chinook
-
-## Questions
-### How to use NOT in queries
-Why does
-
-```
-SELECT * FROM CUSTOMER
-WHERE COUNTRY NOT LIKE 'USA';
-```
-
-work and
-
-```
-SELECT * FROM CUSTOMER
-WHERE COUNTRY NOT 'USA';
-```
-does not work?
-
-### Answer
-To avoid using `LIKE` <br/>
-
-`WHERE NOT customer.country = "USA";` <br/>
-or <br/>
-`WHERE NOT != "USA";` <br/>
-
-are valid ways of forming the query.
-
-## Resources
-[How to concatenate columns in SQL - CONCAT_WS()](https://www.w3schools.com/sql/func_mysql_concat_ws.asp)
-
-## New Concepts/Syntax
-
-SQLite <br/>
-`strftime('%Y', InvoiceDate`
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