I have this MySQL query
SELECT count( * ) AS total
FROM `orders` o, `orders_status` s, `orders_status_history` osh
LEFT JOIN `orders_total` ot ON ot.orders_id = o.orders_id
WHERE o.orders_status = s.orders_status_id
AND osh.orders_id = o.orders_id
AND s.language_id = '5'
AND s.orders_status_id = '6'
AND ot.class = 'ot_total'
getting this error:
#1054 - Unknown column 'o.orders_id' in 'on clause'
My table schema is as follows:
CREATE TABLE IF NOT EXISTS `orders` (
`orders_id` int(11) NOT NULL auto_increment,
`customers_id` int(11) NOT NULL default '0',
`last_modified` datetime default NULL,
`orders_status` int(5) NOT NULL default '0',
`orders_date_finished` datetime default NULL,
`comments` text,
`currency` char(3) default NULL,
`currency_value` decimal(14,6) default NULL,
`invoice_number` varchar(100) default NULL,
PRIMARY KEY (`orders_id`)
) ENGINE=MyISAM DEFAULT CHARSET=cp1251 AUTO_INCREMENT=8419 ;
And I can't understand where the error comes from. Any ideas?
You have an OR
as your table alias for your orders table. You need to change the table alias name.
SELECT count( * ) AS total
FROM `orders` o , `orders_status` s, `orders_status_history` osh
LEFT JOIN `orders_total` ot ON ot.orders_id = or.orders_id
WHERE o.orders_status = s.orders_status_id
AND osh.orders_id = or.orders_id
AND s.language_id = '5'
AND s.orders_status_id = '6'
AND ot.class = 'ot_total'
You should also change your JOIN syntax
SELECT count( * ) AS total
FROM `orders` o
LEFT JOIN `orders_status` s
ON o.order_status = s.orders_status_id
LEFT JOIN `orders_status_history` osh
ON osh.orders_id = o.orders_id
LEFT JOIN `orders_total` ot
ON ot.orders_id = o.orders_id
WHERE s.language_id = '5'
AND s.orders_status_id = '6'
AND ot.class = 'ot_total'
As stated in the manual :
Previously, the comma operator (
,
) andJOIN
both had the same precedence, so the join expressiont1, t2 JOIN t3
was interpreted as((t1, t2) JOIN t3)
. NowJOIN
has higher precedence, so the expression is interpreted as(t1, (t2 JOIN t3))
. This change affects statements that use anON
clause, because that clause can refer only to columns in the operands of the join, and the change in precedence changes interpretation of what those operands are.Example:
CREATE TABLE t1 (i1 INT, j1 INT); CREATE TABLE t2 (i2 INT, j2 INT); CREATE TABLE t3 (i3 INT, j3 INT); INSERT INTO t1 VALUES(1,1); INSERT INTO t2 VALUES(1,1); INSERT INTO t3 VALUES(1,1); SELECT * FROM t1, t2 JOIN t3 ON (t1.i1 = t3.i3);
Previously, the
SELECT
was legal due to the implicit grouping oft1,t2
as(t1,t2)
. Now theJOIN
takes precedence, so the operands for theON
clause aret2
andt3
. Becauset1.i1
is not a column in either of the operands, the result is anUnknown column 't1.i1' in 'on clause'
error. To allow the join to be processed, group the first two tables explicitly with parentheses so that the operands for theON
clause are(t1,t2)
andt3
:SELECT * FROM (t1, t2) JOIN t3 ON (t1.i1 = t3.i3);
Alternatively, avoid the use of the comma operator and use
JOIN
instead:SELECT * FROM t1 JOIN t2 JOIN t3 ON (t1.i1 = t3.i3);
This change also applies to statements that mix the comma operator with
INNER JOIN
,CROSS JOIN
,LEFT JOIN
, andRIGHT JOIN
, all of which now have higher precedence than the comma operator.
Or is a mysql keyword! replace it with something else, eg _or & try again!
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