Re: query strings & printouts Re: [PHP-WIN] Query Syntax - WHERE fieldname1='fieldvalue1' AND fieldname2='fieldvalue2'

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Mark Abrams wrote:
Here are the query strings &  printouts:

This works OK
$query = "SELECT $field_name FROM classifieds WHERE $field_name1 = '$field_value1' AND $field_name2 = '$field_value2'";

    SELECT FROM classifieds WHERE trans_type ="For Sale"

FAILS

Of course it does. You want to select *WHAT* from classifieds? As I suspected. $field_name is empty or not defined.

#1
$query = "SELECT $field_name FROM classifieds WHERE $field_name1 = '$field_value1' AND $field_name2 = '$field_value2'";

SELECT FROM classifieds WHERE trans_type = 'For Sale' AND category = 'Books'

Warning: mysql_query() [http://www.mysql.com/doc]: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM classifieds WHERE trans_type = 'For Sale' AND trans_type = 'For Sale'' at line 1 in C:\apache2triad\htdocs\sunlakes\test3.php on line 82

Ditto.

#2
      $query = "SELECT $field_name
              FROM classifieds
              WHERE ($field_name1 = '".$field_value1."')
              AND   ($field_name2 = '".$field_value2."')";

SELECT FROM classifieds WHERE (trans_type = 'For Sale') AND (category = 'Books')


Warning: mysql_query() [http://www.mysql.com/doc]: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM classifieds WHERE (trans_type = 'For Sale') AND (tr' at line 2 in C:\apache2triad\htdocs\sunlakes\test3.php on line 85

Ditto.

-Stut

"Stut" <stuttle@xxxxxxxxx> wrote in message news:46531BBA.5010207@xxxxxxxxxxxx
Mark Abrams wrote:
#2 FAILS

$query = "SELECT $field_name FROM classifieds WHERE $field_name1 = '$field_value1' AND $field_name2 ='$field_value2'";

$result = mysql_query($query) or die(mysql_error());

dies with the following message:

Warning: mysql_query() [http://www.mysql.com/doc]: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FROM classifieds WHERE trans_type = 'For Sale' AND category ='Boats'' at line 1 in C:\apache2triad\htdocs\
Have you tried printing out $query to see exactly what you're sending? Seems like a logical first step to me. Something about it is clearly wrong, and I'm guess it's an empty or wrong $field_name value.

-Stut


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