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Error: Join in MySql, PHP


Error: Join in MySql, PHP

By : Driudas
Date : November 18 2020, 03:49 PM
wish help you to fix your issue I have two tables in mysql one is quote and the fields are quote_id, status, created and submit_by. in submit_by field i am saving username of the employee and in employee table the fields are firs_name, last_name, username, password. I want to show in a php table the employee first name instead of username of the employee. , Use this one
code :
$sql = "SELECT * , employee.first_name FROM quote 
LEFT JOIN employee ON quote.submit_by = employee.username ORDER BY quote.client_name";
$result = $dbLink->query($sql);


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Error Code: 1064. You have an error in your SQL syntax; 3 table mysql join

Error Code: 1064. You have an error in your SQL syntax; 3 table mysql join


By : joe.k
Date : March 29 2020, 07:55 AM
Does that help You have a few issues with your query.
First, you are attempting to create an alias using a reserved word group. You will have to escape the reserved word using backticks. Also, you should have separate sets of backticks around the table and columns name, they should not be enclosed in a single pair.
code :
SELECT `group`.`id` as group_id,
       `group`.`name` as group_name,
       group_members.`member` as member_id,
       group_members.`group` as member_groupid,
       users.`usr.id` as user_id
FROM `mahara`.`group` as `group`
INNER JOIN `mahara`.group_member` as group_members 
  ON group_id = member_id
INNER JOIN `mahara`.`usr` as users 
  ON member_id = user_id
LIMIT 0, 200;
MySQL Outer Join Giving Max Join Size Error

MySQL Outer Join Giving Max Join Size Error


By : Peter Eppich Sonnenl
Date : March 29 2020, 07:55 AM
this will help Your query looks fine, but if that's obviously failing, you might try the following
code :
select
      m.member_id,
      m.`name`,
      coalesce( cnts.UniqItems, 0 ) as UniqItems
   from
      members m
         left join ( select p.member_id, count( distinct p.item_id ) as UniqItems
                        from purchases p
                        group by p.member_id ) cnts
            on m.member_id = cnts.member_id
Mysql Left Join and Join in same query - syntax error

Mysql Left Join and Join in same query - syntax error


By : user2089989
Date : March 29 2020, 07:55 AM
wish of those help In your query you lack an ON clause in the first JOIN.
As stated on http://dev.mysql.com/doc/refman/5.0/en/join.html , LEFT, RIGHT and OUTER joins need to have an ON clause.
code :
   SELECT *
     FROM t1 
LEFT JOIN db2.t2 AS  t2 ON t1.id=t2.id
     JOIN t3 ON t1.id=t3.id  
    WHERE 1;
MySQL error: check the manual that corresponds to your MySQL server version for the right syntax to use near 'LEFT JOIN

MySQL error: check the manual that corresponds to your MySQL server version for the right syntax to use near 'LEFT JOIN


By : starphir4
Date : March 29 2020, 07:55 AM
help you fix your problem You have mixed ON and WHERE near the line that threw the error. Change your query to look like this:
code :
SELECT COUNT(DISTINCT p.product_id) AS total 
FROM oc_product p 
    LEFT JOIN oc_product_description pd ON (p.product_id = pd.product_id) 
    LEFT JOIN oc_product_to_store p2s ON (p.product_id = p2s.product_id) 
        AND pd.language_id = '1' AND p.status = '1' 
        AND p.date_available <= NOW() AND p2s.store_id = '0' 
    LEFT JOIN oc_product_to_manufacturer p2m ON (p.product_id = p2m.product_id) 
        AND p2m.manufacturer_id = '8'
Join statement in ruby on rails throws up error MySQL::Error: Unknown column

Join statement in ruby on rails throws up error MySQL::Error: Unknown column


By : karinalmartinez
Date : March 29 2020, 07:55 AM
wish of those help
code :
Participation.joins(:booking).where(payment_status: 2).where("ad_trek_booking.date_of_booking > ?",Date.today - 6.days)
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