How can I perform this type of search?
Here is my table:
Name Category
---------------------------------
Company1 food,services
Company2 garden,gifts,services
Company3 other,auto
and here is the query:
$search = $_GET['search'];
"SELECT * FROM companies WHERE category IN ('$search')";
The above search variable looks like mydomain.com?search=garden,services
The idea is to get all relevant rows if any of the matching keywords are present within Category field.
The simplest SQL search is probably a LIKE search:
SELECT * from companies where category LIKE ("%$search%");
You can also do a REGEXP search:
SELECT * from companies where category REGEXP ("$search");
What many have ended up doing, though, is fulltext searching. You can configure MySQL to do this, or perhaps you'll want to try a solution like SphinxSearch.
Related
I'm trying to make a search feature that will search multiple columns to find a keyword based match. This query:
SELECT title FROM pages LIKE %$query%;
works only for searching one column, I noticed separating column names with commas results in an error. So is it possible to search multiple columns in mysql?
If it is just for searching then you may be able to use CONCATENATE_WS.
This would allow wild card searching.
There may be performance issues depending on the size of the table.
SELECT *
FROM pages
WHERE CONCAT_WS('', column1, column2, column3) LIKE '%keyword%'
You can use the AND or OR operators, depending on what you want the search to return.
SELECT title FROM pages WHERE my_col LIKE %$param1% AND another_col LIKE %$param2%;
Both clauses have to match for a record to be returned. Alternatively:
SELECT title FROM pages WHERE my_col LIKE %$param1% OR another_col LIKE %$param2%;
If either clause matches then the record will be returned.
For more about what you can do with MySQL SELECT queries, try the documentation.
If your table is MyISAM:
SELECT *
FROM pages
WHERE MATCH(title, content) AGAINST ('keyword' IN BOOLEAN MODE)
This will be much faster if you create a FULLTEXT index on your columns:
CREATE FULLTEXT INDEX fx_pages_title_content ON pages (title, content)
, but will work even without the index.
1)
select *
from employee em
where CONCAT(em.firstname, ' ', em.lastname) like '%parth pa%';
2)
select *
from employee em
where CONCAT_ws('-', em.firstname, em.lastname) like '%parth-pa%';
First is usefull when we have data like : 'firstname lastname'.
e.g
parth patel
parth p
patel parth
Second is usefull when we have data like : 'firstname-lastname'. In it you can also use special characters.
e.g
parth-patel
parth_p
patel#parth
Here is a query which you can use to search for anything in from your database as a search result ,
SELECT * FROM tbl_customer
WHERE CustomerName LIKE '%".$search."%'
OR Address LIKE '%".$search."%'
OR City LIKE '%".$search."%'
OR PostalCode LIKE '%".$search."%'
OR Country LIKE '%".$search."%'
Using this code will help you search in for multiple columns easily
SELECT * FROM persons WHERE (`LastName` LIKE 'r%') OR (`FirstName` LIKE 'a%');
Please try with above query.
I have a table "songs" and column "singers". I want to perform a search on table "songs" by the name of the singer. My problem is, if the name of the singer is "Gallagher" the query gives me not only the singer "Gallagher" but also all other names with "Gallagher" in it, for example "Noel Gallagher" "Liam Gallagher", etc...
How can I refine my search to only give me "Gallagher" if the search string is "Gallagher"?
My query is this:
SELECT * FROM songs WHERE singers RLIKE \"" . $searchstring . "\" ORDER BY title
Edit: After searching stackoverflow, here is a solution you maybe looking for: MySQL - How to search for exact word match using LIKE?
What‘s you‘r searchquery exactly?
SELECT * FROM songs WHERE singers RLIKE '^Gallagher';
If you want to display 'Gallagher only then use SUBSTRING_INDEX
SELECT DISTINCT SUBSTRING_INDEX(singers, " ", -1) FROM songs WHERE singers LIKE '%{$search_string}%' ORDER BY title;
If you want search single name based on last name (surname) then you need to write below query
SELECT * FROM songs WHERE singers LIKE '%Gallagher';
I am trying to search user based on full_name. I have database table with field full_name
Here are the records of table table : users
ID full_name
1 adam bell nithan jhon albrt
2 ali imam khan
If i use query like this then it will work,
select * from users where full_name like '%ali imam%'
select * from users where full_name like '%adam bell%'
But if i search like this it will not work,
select * from users where full_name like '%adam bell nithan albrt%'
select * from users where full_name like '%ali khan%'
I dont know why this happening even we used proper like query. Is there any solution regarding this issue?
You can try this:
select *
from users
where full_name like concat('%', replace('adam bell nithan albrt', ' ', '%'), '%');
It replaces the spaces with wildcards. However, you are still stuck with the ordering of the names.
I think you should look into full text search functions (see here). I think it might be exactly what you need, and the performance is much better than like.
I have a table called cakes that contains the columns: id, title, description, keywords. I also have a table called keywords, with cakes being the parent. The keywords table contains two columns: id and keyword
I need two queries: UPDATED
If a person types in ingredients such as chocolate, hazelnut, strawberry (could be anything separated by a comma) I need the query to search for cakes that contain all three keywords and display results. Display ONLY cakes that contain all three. If no cake matches, I need a message saying nothing found.
I have a label on the search box which says, Find similar cakes. If a person types in Vanilla Raspberry or example, the query needs to locate the cake in the database and match its keywords to the keywords of other cakes and display results. Display ONLY cakes that have the same keywords.
Not sure how to write these queries. Any help is appreciated. Thanks!
If the database must use a delimited long-string field for "keywords" rather than putting them in rows, then you will want to use the LIKE Operator
Assuming your [keywords] column is formatted like this:
'chocolate,ganache,strawberry'
You can search for "similar" cakes like this:
SELECT
columns
FROM
table t
WHERE
t.[keywords] LIKE '%chocolate%'
OR t.[keywords] LIKE '%cheesecake%'
Though, if you can change the schema, I would do so. Searching normalized keyword rows will be much more efficient and fast than having the DB parse through text using LIKE
If you could make a keywords table, which references the parent table by ID, you could do an equality search using a JOIN which would be superior, in my opinion.
It might have three columns: Id, ParentId, Keyword
EDIT: So based on your update, you have a cakewords table which can be searched.
This is untested, and there is likely a more efficient way using no IN clause. But the idea is that you know all the keyword id's for your specific cake. Then you are looking for other cakes having keywords in that collection.
SELECT
columns
FROM
cake AS cs
JOIN
cakewords AS csw
ON csw.[cakeid] = cs.[id]
WHERE
csw.[wordid] IN
(SELECT
cw.[wordid]
FROM
cakewords AS cw
JOIN
cakes AS c
ON c.[id] = cw.[cakeid]
WHERE
c.[id] = #pMyCurrenctCakeId
(
EDIT2: Here is a good related question:
What's the optimal solution for tag/keyword matching?
Based on an answer within, you might try this:
SELECT DISTINCT
c.[id]
FROM
cakewords AS cw1
INNER JOIN cakewords cw2
ON cw2.[wordid] = cw1.[wordid]
INNER JOIN cake AS c
ON c.[id] = cw.[cakeid]
WHERE
cw1.[cakeid] = #current_cake_id
I want to make a search engine in an intranet. Now i use this clause in PHP.
$k = explode(" ",$_GET[key]);
$sql = "select entreprise.*, employee.* where entreprise.* or employee.* like '%$k[0]%' or '%$k[1]%'";
But it seems doesn't work. Do you know where is wrong?
Thanks in advance.
Edit:
$sql = "select * from entreprise, site, salarie where entreprise.*, site.*, salarie.* like '%$k[0]%' or '%$k[1]%'";
I have modified the query clause. With this code, i think you can know what i want to do.
I want to find anything that matches the content in all the columns of entreprise table and the content in all the columns of employee table.
It's hard to exactly see what you're trying to do, but you need, in your SQL query, to specify :
on which tables you are working, with a from clause
on which fields the search has to be done, in the where clause.
how the data between employees and enterprises are related :
do you want to search for entreprises and their employees ?
for employees and there enterprises ?
for all enterprises and the employees when the employee or the enterprise contains the words ?
You could use something like this to search for entreprises that contain the word, and get their employees to :
select *
from entreprise
inner join employee on employee.id_entreprise = entreprise.id
where entreprise.name like '%word%'
or entreprise.description like '%word%';
Or, to search for employees that match the criteria and get their entreprise too :
select *
from employee
inner join entreprise on entreprise.id = employee.id_entreprise
where employee.name like '%word%';
(just some ideas -- you'll have to build from there !)
This:
$sql = "select entreprise.*, employee.* where entreprise.* or employee.* like '%$k[0]%' or '%$k[1]%'";
is not valid SQL. It is hard to guess what you want to do, but I'm trying anyway: you want to find employees, and search them by name or by enterprise that employs them. Is that the case? Or do you want to search employess and/or enterprises?
EDIT
I want to find anything that matches the content in all the columns of entreprise table and the content in all the columns of employee table.
Ok, first of all you should realize that SQL is probably not the best tool for this job. See the other commenter - his suggestions about sphinx and friends are good. But still, if you really want to:
$sql = '
SELECT e.id, e.name
FROM enterprise e
-- first, look in column1
WHERE e.column1 LIKE '."'%".$k[0]."%'".'
OR e.column1 LIKE '."'%".$k[1]."%'".'
...etc for all entries in k...
OR e.column1 LIKE '."'%".$k[N]."%'".'
-- then, look in column2
OR e.column2 LIKE '."'%".$k[0]."%'".'
OR e.column2 LIKE '."'%".$k[1]."%'".'
...and so on and so forth for all entries in $k and all columns in enterprise...
UNION ALL
SELECT s.id, s.name
FROM salarie s
WHERE ...and the same for columns of salarie...
...
UNION ALL
...any other tables you want to search...
';
As you can see, not something that makes you happy.
Another approach that might give you more joy is having some overnight job to scan all rows in the tables you're interested in, parse the texts you want to search into separate words, and store those in a keyword table, and storing the association between an object from the source database and the keyword in a separate table. You can then search the keyword table and use the id's and table names you find for a collection of keywords to build the actual query to retrieve those rows. This is what I do, and it works great. It works better because there is a relatively small amount of words that you will encounter, whereas the collection of objects is quite possible very large.