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JDBC and Relational Databases
mySQL Inner join
Joined: Jan 07, 2004
Oct 06, 2011 19:00:39
I am having a problem with a SQL query and inner join.
My problem is that I only want rows to be returned IF invoicelog.statusCode != 'OK' is true. The "statusCode = OK" may NOT exist in the rows being returned.
The query below returns one row with invoiceID = 2663, even that statusCode = OK does exists in one of the two rows being returned from invoicelog.
SELECT oioxmlinvoice.invoiceID FROM oioxmlinvoice INNER JOIN invoicelog ON oioxmlinvoice.invoiceID = invoicelog.invoiceID AND invoicelog.statusCode != 'OK' AND oioxmlinvoice.invoiceID = 2663 GROUP BY `oioxmlinvoice`.`invoiceID`
Running the query:
SELECT * FROM invoicelog WHERE invoiceID = 2663
it returns two rows:
InvoiceLogID StatusCode 2663 OK 2663 ERROR
So how do I ensure that I don´t get any rows returned if "StatusCode = OK" exists in one of the rows from table invoicelog .
Joined: Dec 20, 2006
Oct 06, 2011 23:43:57
You can use 'not 'exists':
or 'not in':
OCUP UML fundamental and ITIL foundation
I agree. Here's the link:
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