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SQL Issue

Posted on 2014-03-03
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Last Modified: 2014-03-03
What is wrong with this query?

SELECT * from subcat_docs where prim = 'Polywrap' and category = '20' Perforations' and subcategory = 'Black 200/400''

When I run this phpMyadmin, it says error in the syntax near "where catag".

The attached shows the table structure.

Thanks
subcat-docs-str.jpg
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Question by:Richard Korts
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3 Comments
 
LVL 18

Accepted Solution

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Matthew Kelly earned 250 total points
ID: 39902009
Can you post the exact phpMyAdmin message?

I just made that table, and ran that query (copy and pasted) the below, and it ran without error.

SELECT * from subcat_docs where prim = 'Polywrap' and category = '20' Perforations' and subcategory = 'Black 200/400''

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Author Comment

by:Richard Korts
ID: 39902105
That's crazy; I just ran it again, no error.

Can you tell we how to escape the data (from a MySQL point of view)  if there are ' in the data itself?

Thanks
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LVL 35

Assisted Solution

by:Terry Woods
Terry Woods earned 250 total points
ID: 39902108
Just add a backslash before it eg
where word = 'can\'t'

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You can often avoid escaping by using double quotes too.

When you're writing code to perform queries with user supplied data, you need to have foolproof methods to ensure any special characters get properly escaped, or your software can become vulnerable to SQL injection attack. Let me know if you want more information on this (it's language dependent).
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