使用“ LIKE”匹配mysql查询中的多个单词

Question

My application allows searching of articles. So when a user enters the string "articlex" the query works & results are show but when multiple words are entered "articlex articley" the query shows no results.

Cuurently I'm using this query

$querySub = 'SELECT * FROM table WHERE (col1 LIKE "%'.$search_string.'%") OR (col2 LIKE "%'.$search_string.'%") OR (col3 LIKE "%'.$search_string.'%")';

Where $search_string only contains the input by user

How can I make the query applicable for multiple words as well?

Answer 1

Example for PDO

/* Assume $pdo is already prepared as PDO instance. */

// search query split by spaces
$user_input = 'foo bar baz';

// create string for PDO::prepare()
$sql = 'SELECT * FROM testTable WHERE ';
$wheres = $values = array();
foreach (array_filter(explode(' ', $user_input), 'strlen') as $keyword) {
    $wheres[] = 'col1 LIKE ?';
    $values[] = '%' . addcslashes($keyword, '%_\\') . '%'; // this is escape for LIKE search
}
$sql .= $wheres ? implode(' OR ', $wheres) : '1';

// bind values and execute
$stmt = $pdo->prepare($sql);
$stmt->execute($values);

Example for mysql_** functions (deprecated)

/* Assume $link is already prepared as MySQL resource. */

// search query split by spaces
$user_input = 'foo bar baz';

// create string for mysql_auery()
$sql = 'SELECT * FROM testTable WHERE ';
foreach (array_filter(explode(' ', $user_input), 'strlen') as $keyword) {
    $wheres[] = 'col1 LIKE ' . mysql_real_escape_string(
        '%' . addcslashes($keyword, '%_\\') . '%',
        $link
    );
}
$sql .= !empty($wheres) ? implode(' OR ', $wheres) : '1';

// execute
$result = mysql_query($sql, $link);

Answer 2

While using variables for like query, you could use

Select * from table where keyword LIKE '%{$to_be_searched}%'

Answer 3

use only one "%" at the end. like

$querySub = SELECT * FROM table WHERE (col1 LIKE '$search_string%'");

This will search for both "articlex" and "articley"

Answer 4

delimiter // CREATE PROCEDURE proc_advancesearch (IN p_data VARCHAR(80) , IN act_mode VARCHAR(10))

begin

declare p_s_data varchar(250); SET sql_mode='NO_ENGINE_SUBSTITUTION';

set p_s_data= REPLACE(p_data,' ','% '); set p_s_data=concat('% ',p_s_data,'%');

select prodtmappid,ProId, ProductName,FinalPrice, fn_image(prodtmappid) as image from tblproductmapforlisting where ProStatus='A' and ( concat(ProductName,' ',brandname,' ',CatName) like (p_s_data)

)

or ProductName like concat(p_data,'%')) group by tblproductmapforlisting.ProId order by propriority asc ;

end

Answer 5

您可以为此使用REGEXP .....或者，如果您想进行多个单词搜索，则需要按空格展开搜索字符串，然后使用LIKE从表中搜索此字符串。

       if you search "articlex articley" then it will search whole word in LIKE operator