Introduction to SQL
When three or more AND and OR conditions are combined, it is easier to use the SQL keyword(s):

Both IN and NOT IN.
IN only.
LIKE only.
NOT IN only.

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Introduction to SQL
Find the temperature in increasing order of all cities

SELECT city FROM weather ORDER BY temperature;
SELECT city, temperature FROM weather ORDER BY city;
SELECT city, temperature FROM weather;
SELECT city, temperature FROM weather ORDER BY temperature;

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Introduction to SQL
If a query involves NOT, AND, OR with no parenthesis

AND will be evaluated first; OR will be evaluated second; NOT will be evaluated last.
NOT will be evaluated first; AND will be evaluated second; OR will be evaluated last.
NOT will be evaluated first; OR will be evaluated second; AND will be evaluated last.
The order of occurrence determines the order of evaluation.

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