I've built an internal DB / Search Engine for art creatives. I'm trying to create a search criterion where you can query one column in the database and also search several columns in the database for a phrase search using FullText Search. The example of a search query might be: November {and} Black Friday. November would search for creatives matching the created_for column and the black friday would search headline, subheadline and additional_text columns with a fulltext search. Any ideas of how to accomplish this would be really helpful!
SELECT
(SELECT * FROM headlines WHERE created_for = '$searchString' AND image_slug <> '')
(SELECT *, MATCH(headline) AGAINST('$fullText' IN BOOLEAN MODE) AS MultiScore, MATCH(subheadline, additional_text) AGAINST('$fullText' IN BOOLEAN MODE) AS MultiSecondScore
FROM `headlines`
WHERE MATCH(headline, subheadline, additional_text) AGAINST('$fullText' IN BOOLEAN MODE))
I've tried adding a UNION statement before the second Select statement, but I get an error message saying the columns don't match. Not sure what I've got wrong here, but thanks in advance for your help!
Use AND in the WHERE clause.
SELECT *, MATCH(headline) AGAINST('$fullText' IN BOOLEAN MODE) AS MultiScore, MATCH(subheadline, additional_text) AGAINST('$fullText' IN BOOLEAN MODE) AS MultiSecondScore
FROM headlines
WHERE created_for = '$searchString'
AND image_slug <> ''
AND MATCH(headline, subheadline, additional_text) AGAINST('$fullText' IN BOOLEAN MODE)
UNION would get results that match either of the criteria, not both of them. And when you use UNION, both subqueries have to return the same number of columns -- you would have to add extra columns to the first query to match the MultiScore and MultiSecondScore columns of the first query.
Related
I have already searched online but not find any use full link Fulltext search only returns exact matches
I have column posttitle with row values
shiva
goodshiva
goodshiva
goodshivagood
Query:
SELECT * FROM `jobs` WHERE match(posttitle) against('shiva' in boolean mode)
and
SELECT * FROM `jobs` WHERE match(posttitle) against('*shiva*' in boolean mode)
doesn't return any value
SELECT * FROM `jobs` WHERE match(posttitle) against('shiva*' in boolean mode)
and
SELECT * FROM `jobs` WHERE match(posttitle) against('+shiva*' in boolean mode)
shows only shivagood and shiva
using natural language mode shows only exact match.
Is there any way without using like?
You have found a limitation to mysql full text search.
There is no equivalent syntax to
LIKE '%something%'
While MySQL itself will return a result for that type of query, no index can be used, so the table involved will be "table scanned"
The full text match syntax of +shiva* will only match when a word starts with shiva. It will not match for words that contain shiva but do not start with shiva.
*shiva*
Is not supported.
Due to this limitation and other issues with full text search, many websites utilize an external search engine like sphinx or solr. Sphinx for example, does allow for
'*shiva*'.
I would like to ask if anybody can help me with this query
SELECT count(MATCH(product_text) AGAINST('lorem*' in boolean mode)) AS score FROM table_products WHERE MATCH (text) AGAINST ('lorem*' in boolean mode) limit 0,50000
There is fulltext index on column text. A.m. query return sum of rows as score.
What I wont is to count fulltext search results. If the number of results(rows)
is higher than 50000, than count-sum 50000 will be returned, otherwise the exact count of
of results is returned.
Problem is that it is not fast on table width 1,5 million rows if user try to find for example word "lorem" and this word appears in table f.e. more than 500 000 x.
I tried also
SELECT id,name,product_text,price, MATCH(product_text) AGAINST('lorem*' in boolean mode) AS score FROM table_products WHERE MATCH(product_text) AGAINST('lorem*' in boolean mode) and show_product='1' limit 0,50000
... width php mysql_num_rows
Another problem is that in following query mysql use fulltext index only
and sort by another column or by score is than slow
SELECT id,name,product_text,price, MATCH(product_text) AGAINST('lorem*' in boolean mode) AS score FROM table_products WHERE MATCH(product_text) AGAINST('lorem*' in boolean mode) and show_product='1' order by score desc limit 0,50000
resp. (..order by name, order by price)
Is there another better and faster way?
Many thanks for any help.
Why does this SQL query return a blank result?
select
webs.title,webs.disc,webs.logo,webs.id
from
webs
JOIN rel ON rel.webid=webs.id
JOIN catagory on catagory.id=rel.catid
where
webs.app!=0
AND MATCH (webs.title,webs.city,webs.state,webs.url,catagory.catname) AGAINST ('+".$_GET['search']."' IN BOOLEAN MODE)
This is a query for multiples searches in multiple tables and fields.
I also want to order the result by the best matching word.
If you want to use "MATCH() ... AGAINST", first create fulltext index on the field which you want in match.
I have a table in a database with records containing keywords as well as other data. What would be a logical way to create a search function that would allow people to search based on keywords, and order results based on the number of matched keywords?
Mysql provide FULLTEXT search options. Check this link mysql full text search. These search results will be sorted according to best match. it also has support for boolean mode and NATURAL LANGUAGE MODE(default). You need to add FULLTEXT index on search column.
Here is the query that will work for you.
SELECT *, MATCH (ab,cd) AGAINST ('sample text' IN BOOLEAN MODE) AS relevancy
FROM table_name
WHERE MATCH (ab,cd) AGAINST ('sample text' IN BOOLEAN MODE)
ORDER BY relevancy DESC;
I am making a multi-table fulltext query.But I met some question.
I need make a query like
(SELECT
title,content,date,cat
FROM article1
WHERE
cat='Science fiction'
AND
MATCH (title,content)
AGAINST
('+Harry +Potter' IN BOOLEAN MODE))
UNION
(SELECT
title,content,date
FROM article3
WHERE MATCH (title,content)
AGAINST
('+Harry +Potter' IN BOOLEAN MODE))
Order By date DESC LIMIT 10
But it caused Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource
If I deleted cat='Science fiction' AND it can pass the test.
Where is the problem? If I want make a query what I want: first fulltext query require need meet cat='Science fiction'. Thanks a lot.
You are trying to UNION together result sets that return a different number of columns. Your first query returns 4 columns (title,content,date,cat) while your second only returns 3 (title,content,date). Each query must return the same number of columns.
I don't know why removing the cat LIKE 'Science fiction' makes the query work. As written, it should not work in either case. UNION requires both parts of the queries to produce the same number of columns with compatible types. Your UNION has 4 columns in the first part and 3 columns in the second:
SELECT title, content, date, cat FROM article1
UNION
SELECT title, content, date FROM article3
Did mysql_query return FALSE, indicating a problem parsing your query? If you blindly passed "FALSE" into mysql_fetch_array(), I'd expect to see that kind of error.
try
cat LIKE 'Science fiction'