|Related to : Avoid subquery and 2nd group by?|
|How to write this query (containing group by and join in subquery) in Laravel?|
There are so many possibilities. That's one:
->join('programs', 'channels.id', '=',
DB::raw('count(programs.id) as num_of_programs'))
I hope it works fine for you.
|MySQL aggregate function with GROUP BY to avoid NULL's overwriting desired field value|
Just aggregate your results using MAX:
MAX(CASE WHEN dayofweek = 0 THEN lesson_date END) AS 'MONDAY',
MAX(CASE WHEN dayofweek = 1 THEN lesson_date END) AS 'TUESDAY',
MAX(CASE WHEN dayofweek = 2 THEN lesson_date END) AS 'WEDNESDAY',
MAX(CASE WHEN dayofweek = 3 THEN lesson_date END) AS 'THURSDAY',
MAX(CASE WHEN dayofweek = 4 THEN lesson_date END) AS 'FR
|How to change subQuery to Co-related Subquery?|
I think this is what you're looking for. Just move the query into the
FROM section and use a JOIN to filter the results based on the same
conditions you had in the WHERE clause, except this time you reference
the result set (RS) returned by the subquery.
FROM AdventureWorks.Person.Contact a
INNER JOIN [AdventureWorks].[HumanResources].[Employee] b
|EC2 security group setting for load balancer, auto scaling group|
OutofService indicates that your Elastic Load Balancer is either not
ready, or the instances are failing their Health Check. If you point
to the little "i" information icon, it will explain why an instance is
Within your Elastic Load Balancer, take a look at the Health Check tab
and confirm that it is configured correctly. It will either be
checking a URL (eg /index.htm) or checkin
|ggplot2 line chart gives "geom_path: Each group consist of only one observation. Do you need to adjust the group aesthetic?"|
You get this error because one of your variables is actually a factor
to check this.
Then do this double variable change to keep the year numbers instead
of transforming into "1,2,3,4" level numbers:
df$year <- as.numeric(as.character(df$year))
EDIT: it appears that your data.frame has a variable of class "array"
which might cause the pb.
df <- da