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sql query help (very specific)

开发者 https://www.devze.com 2022-12-16 21:10 出处:网络
I have looked all over the internet for an answer to my question to why my sql statement returns false.I checked it out on the sql validator over at mimer and all I got was that I used the reserved wo

I have looked all over the internet for an answer to my question to why my sql statement returns false. I checked it out on the sql validator over at mimer and all I got was that I used the reserved word name. There should be something in my databa开发者_Go百科se that matches this so here it is:

Here is how I create the sql statement:

$title = 'SELECT * FROM item, categories WHERE item.title 
LIKE "%'.implode('%" OR item.title LIKE "%', $data).'%"'.' 
AND categories.name = '.$category;

And this is the result:

SELECT * FROM item, categories WHERE item.title LIKE "%hello%" 
OR item.title LIKE "%world%" OR item.title 
LIKE "%Joomla%" OR item.title LIKE "%Animal%" AND categories.name = Book


You should probably think about your (lack of) parentheses. I'm not sure specifically what you are trying to accomplish,

but this:

SELECT
    *
FROM item, categories
WHERE item.title LIKE "%hello%"
OR item.title LIKE "%world%"
OR item.title LIKE "%Joomla%"
OR item.title LIKE "%Animal%"
AND categories.name = "Book"

is vastly different from this:

SELECT
    *
FROM item, categories
WHERE (
    item.title LIKE "%hello%"
    OR item.title LIKE "%world%"
    OR item.title LIKE "%Joomla%"
    OR item.title LIKE "%Animal%"
)
AND categories.name = "Book"

Also, like the others say, Book should be in quotes (like I have done here).

AND categories.name = "Book"


You need to surround the word Book with quotes.

I'm betting you also need parentheses.

SELECT * FROM item, categories WHERE (item.title LIKE "%hello%" 
OR item.title LIKE "%world%" OR item.title 
LIKE "%Joomla%" OR item.title LIKE "%Animal%") AND categories.name = "Book"


the last part, categories.name, is that a string? if so it should be

and categories.name = 'book'

note the quotes around book

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