SELECT * FROM `video` WHERE `title` LIKE '%next%'
or
SELECT * FROM `video` WHERE `title` LIKE 'next'
i can get results from the searches which are written above.
but; i cannot get any result with the code which is written below.
SELECT *, MATCH(title) AGAINST('next') AS relevant
FROM video WHERE MATCH(title) AGAINST('next' IN BOOLEAN MODE)
ORDER BY relevant DESC
how can i get a result from the search of "next" word via "fulltext-search" ?
I had the next problem and I found the answer here:
http://dev.mysql.com/doc/refman/5.7/en/fulltext-stopwords.html
There is in fact a list of stop words that will not be returned when you try to do your fulltext search
Related
I have a Mysql table set up for full text search across both the title and the content (body) columns.
I'm trying to bring the most relevant results to the top but I get a lot of garbage.
I have 3 full text indexes, one for the title, one for the body and one for both the title and the body so I can execute the following query:
SELECT id, url, title, body, earliestCapture, responseYear, urlScore,
MATCH (title) AGAINST ("jurassic park" IN BOOLEAN MODE) AS titleScore,
MATCH (body) AGAINST ("jurassic park" IN BOOLEAN MODE) AS bodyScore,
(SELECT (titleScore * 100 + bodyScore)) AS finalscore
FROM Entries
WHERE MATCH (title,body) AGAINST ("jurassic park" IN BOOLEAN MODE)
ORDER BY finalScore DESC LIMIT 0,1000;
I'm trying to multiply the score of the title by 100 to bring instances where the term is in the title to the top.
This does help, but if the body has the word park repeated many times even without the word Jurassic appearing a single time, that row is propelled to the top of the search results.
A great example of that is when I search for "intel pentium". There are a few rows with bodies that use the word intel in the context of intelligence/information and not the company name, that word is repeated hundreds of times and even though there are no instances of the word pentium, those pages are always on the top.
I'm getting really annoyed by this. Does anyone know how to improve the search results?
Thank you!
you ahev to add a + to both search terms so that only results are shown that have both see manual
SELECT id, url, title, body, earliestCapture, responseYear, urlScore,
MATCH (title) AGAINST ("+jurassic +park" IN BOOLEAN MODE) AS titleScore,
MATCH (body) AGAINST ("+jurassic +park" IN BOOLEAN MODE) AS bodyScore,
(SELECT (titleScore * 100 + bodyScore)) AS finalscore
FROM Entries
WHERE MATCH (title,body) AGAINST ("+jurassic +park" IN BOOLEAN MODE)
ORDER BY finalScore DESC LIMIT 0,1000;
I am trying to make a query where I select all the rows that do not contain a specific word, for this I have a fulltext type index in this column, try the following bolt works:
SELECT *
FROM products
WHERE MATCH(title) AGAINST(' -Dolo' IN BOOLEAN MODE)
So how can I perform this search?
If I have understood you correctly you want to find all the rows from the table that do not contain a word'Dolo'.
Well you can use NOT operator for that.
SELECT *
FROM products
WHERE NOT MATCH(title) AGAINST('Dolo');
Here is a DEMO.
Also, you can use it like this(because as the OP has asked: "if the whole word is "dolorem", would this query work?"):
SELECT title as Title
, MATCH(title) AGAINST('Dolo*' IN BOOLEAN MODE) as Score
FROM products
WHERE MATCH(title) AGAINST('Dolo*' IN BOOLEAN MODE) = 0;
* is a wildcard.
Other signs are described here: https://dev.mysql.com/doc/refman/8.0/en/fulltext-boolean.html
Here is the DEMO for the second example.
I've the following query. It selects all posts where the title contains the words green, blue or red.
SELECT id, title FROM post WHERE title REGEXP '(green|blue|red)'
I would like to sort the results in such a way that the title with the most matches (all three words) and thus the most relevant one, is listed first. Is this possible in this scenario and if so, how I would go on about it?
Thanks
You must split the regex. Either to different conditions or different queries:
SELECT COUNT(results.username) as count, results.* FROM (
SELECT * FROM `post` WHERE `title` LIKE "%blue%"
UNION SELECT * FROM `post` WHERE `title` LIKE "%red%"
UNION SELECT * FROM `post` WHERE `title` LIKE "%green%"
) as results GROUP BY results.title ORDER BY count DESC;
Note: I used LIKE instead of REGEXP, becouse when you split the condition you wont need it anymore according to your example. LIKE is a bit faster then regex, but if your pattern is more complex, then you can always replace it back.
Please show me where I'm wrong with this query:
SELECT * FROM `pages` WHERE MATCH ( abstrak) AGAINST ('+"prove"' IN BOOLEAN MODE)
doesn't get 'proves', when I want is it gets 'proves'.
Try this:
SELECT * FROM `pages` WHERE MATCH ( abstrak) AGAINST ('prove*' IN BOOLEAN MODE)
This would match all words that start with prove, including proves.
More info at:
http://dev.mysql.com/doc/refman/5.1/en/fulltext-boolean.html
I read the official page: http://dev.mysql.com/doc/refman/5.5/en/fulltext-search.html
but it's not providing an example
I have 1 col named "mycol", and suppose user input is "keyword1 keyword2". I want to display results ordered by relevance. I tried something like this:
select id,mycol,match(mycol) against('keyword1 keyword2' in boolean mode) as relevance from mytable
It's returning all records relevance is 0. What am I doing wrong?
try
select id,mycol,match(mycol) against('keyword1 keyword2') as relevance from mytable order by relevance desc