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must appear in the GROUP BY clause or be used in an aggregate function
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To workaround this issue, you must calculate the aggregate in a sub-query and then join it with itself to get the additional columns you'd need to show:
SELECT m.cname, m.wmname, t.mx
FROM (
SELECT cname, MAX(avg) AS mx
FROM makerar
GROUP BY cname
) t JOIN makerar m ON m.cname = t....
Should I use != or for not equal in T-SQL?
I have seen SQL that uses both != and <> for not equal . What is the preferred syntax and why?
14 Answers
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How to find controls in a repeater header or footer
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You can take a reference on the control on the ItemCreated event, and then use it later.
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The relationship could not be changed because one or more of the foreign-key properties is non-nulla
I am getting this error when I GetById() on an entity and then set the collection of child entities to my new list which comes from the MVC view.
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How can I split up a Git commit buried in history?
I flubbed up my history and want to do some changes to it. Problem is, I have a commit with two unrelated changes, and this commit is surrounded by some other changes in my local (non-pushed) history.
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Get type name without full namespace
...typeof(T).Name // class name, no namespace
typeof(T).FullName // namespace and class name
typeof(T).Namespace // namespace, no class name
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Need to list all triggers in SQL Server database with table name and table's schema
I need to list all triggers in SQL Server database with table name and table's schema.
19 Answers
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How to create new tmux session if none exists
...session (start the server, read the config file, issue the new-session command) and attach to that.
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Mongod complains that there is no /data/db folder
..., e.g. sudo mkdir -p /data/db
Or you need to do su - to become superuser, and then create the directory with mkdir -p /data/db
Note:
MongoDB also has an option where you can create the data directory in another location, but that's generally not a good idea, because it just slightly complicate...
How should I print types like off_t and size_t?
I'm trying to print types like off_t and size_t . What is the correct placeholder for printf() that is portable ?
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