Why am I getting this result from this search query?

The sql is:

lect * from calendar where description LIKE '%investigation%' or short_name LIKE '%investigation%' AND date>='2015-08-20' AND date<='2015-08-22' group by event_id order by date

The result I get is an event that happened from 2015-06-30 to 2017-07-08. Seems like that wouldn't be a viable "return" on the above statement in that I've qualified the range of dates to be between August 20th and August 22nd.

What am I doing wrong?
brucegustPHP DeveloperAsked:
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Dan CraciunIT ConsultantCommented:
How do you know the event took place between 2015-06-30 and 2017-07-08?
You only have one date field in your query.
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F IgorDeveloperCommented:
The conditions includes OR mixed with AND conditions, you need to correct like this:

select * from calendar 
where ( description LIKE '%investigation%' or short_name LIKE '%investigation%' )
AND date>='2015-08-20' AND date<='2015-08-22' group by event_id order by date 

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hieloCommented:
Try adding parenthesis around your OR expression so that the AND binds to the parenthesized expression as a whole (as opposed to just the last LIKE sub-expression):
select * from calendar where ( description LIKE '%investigation%' or short_name LIKE '%investigation%' ) AND date>='2015-08-20' AND date<='2015-08-22' group by event_id order by date
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Dave BaldwinFixer of ProblemsCommented:
In addition, 'date' is a reserved word in MySQL and needs to be enclosed in backtiks to be used as a column name in a query.  https://dev.mysql.com/doc/refman/5.5/en/keywords.html  To borrow hielo's version...
select * from calendar where ( description LIKE '%investigation%' or short_name LIKE '%investigation%' ) AND `date`>='2015-08-20' AND `date`<='2015-08-22' group by event_id order by `date`

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