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MySQL Oddity

Posted on 2014-12-02
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Last Modified: 2014-12-11
See attached. The tables is small contains 25 rows.

If I do this query: "SELECT * from part_codes where cdesc = 'Favorites'" I get zero rows.

If I do "SELECT * from part_codes where cdesc like  'Favorites%'" I get the expected result.

Why can't it do something as simple as this?
part-codes-table.jpg
pc-select-equal.jpg
pc-select-like.jpg
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Question by:Richard Korts
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Expert Comment

by:Gary
ID: 40477592
Are you sure you don't have any spaces in the Favourites cell?
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Expert Comment

by:Gary
ID: 40477593
Does it work with this

"SELECT * from part_codes where TRIM(cdesc) = 'Favorites'" 

Open in new window

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Author Comment

by:Richard Korts
ID: 40477597
It DOES NOT work with this:  SELECT * from part_codes where TRIM(cdesc) = 'Favorites'

Returns zero rows.

If there are spaces, they are at the trailing end; I have built HUNDREDS of SQL like this, never an issue.

I can go with the like & put a % at the end but I can't understand why it doesn't work in such a SIMPLE case.
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Author Comment

by:Richard Korts
ID: 40477604
Is cdesc a reserved word in MySQL?
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Expert Comment

by:Gary
ID: 40477605
No.

Can you do a dump of the table and attach here, there could be invisible characters like a CR in the field
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Author Comment

by:Richard Korts
ID: 40477620
I can;t see how to do a dump, it doesn't seem to give that option in phpMySQL. See attached.
phpmysql-ops.jpg
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Expert Comment

by:Dave Baldwin
ID: 40477627
Yes, it does.  Click on the Export tab.
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Author Comment

by:Richard Korts
ID: 40477639
OK, attached.
part-codes.sql
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Author Comment

by:Richard Korts
ID: 40477642
FYI, I solved my immediate need using like & the full string followed with %

Crazy!!
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Accepted Solution

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Gary earned 500 total points
ID: 40477644
All your fields have a carriage return in the value
So a slight amendment to my earlier sql

"SELECT * from part_codes where TRIM(TRAILING '\n' FROM cdesc) = 'Favorites'" 

Open in new window


Though better to remove it before inserting it into the db
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