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What is the error “Every derived table must have its own alias” in MySQL?
...able and the software needs to know which customers have made purchases at more than one store:
SELECT DISTINCT customer_id, SUM(1)
FROM ( SELECT DISTINCT customer_id, store_id FROM purchases)
GROUP BY customer_id HAVING 1 < SUM(1);
..will break with the error Every derived table must have...
Cannot delete or update a parent row: a foreign key constraint fails
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Purpose of returning by const value? [duplicate]
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Full screen background image in an activity
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Check if a string contains a number
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Testing if object is of generic type in C#
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How can I color Python logging output?
...edLogger)
Just in case anyone else needs it.
Be careful if you're using more than one logger or handler: ColoredFormatter is changing the record object, which is passed further to other handlers or propagated to other loggers. If you have configured file loggers etc. you probably don't want to ha...
Defining custom attrs
...ide of a <declare-styleable> element. If I'm going to use an attr in more than one place I put it in the root element. Note, all attributes share the same global namespace. That means that even if you create a new attribute inside of a <declare-styleable> element it can be used outside o...
Is there a way to perform “if” in python's lambda
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How can I check if a scrollbar is visible?
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