query with wild card characters in pg_query_params()...

[Abhilash Etikala]

Hi everybody,
I am using PGSQL database and i want to write query using pg_query_params() which contains wild card character ('%')

query:

pg_query_params("select distinct compno,comp_name,sub from compl where comp_name like '%$1%' or sub like '%$2%' or comp_details like '%$3%' or action like '%$4%'",$arr);

I tried by above query but i am getting the query failed:
Query failed: ERROR: bind message supplies 4 parameters, but prepared statement "" requires 0.

any suggestions on passing query parameters when we use wild card characters..
And please correct me if any wrong...

[Atli]

Hey.

The problem is that when you use a parametrized query like that. the database server adds the quotes around the values automatically (if needed). You should not quote it manually, or the place-holder will be ignored, making the query a parameter short of what you provided, which results in the error you posted.

If you need to use a wild-card in your query, you need to add it to the value itself, not the query. For example:

<?php
$dbLink = pg_connect("...");
 
// Note the lack of quote marks around
// the place-holder.
$sql = 'SELECT stuff FROM table
        WHERE field LIKE $1';
 
// The wild-card is added here, in the value
// rather in the query itself.
$values = array('test%');
 
$result = pg_query_params($dbLink, $sql, $values);
 
// etc...
?>

[Abhilash Etikala]

Its Great...Thank You Atli...for providing good explanation. my problem solved now...