This post covers how to use WHERE and DELETE in sub-queries. Useful examples to refer to quickly.
I have explained how to format DATE by using views.
Cloud computing is popular among the software services. AWS plays top role in the field of cloud computing. Explained AWS shared responsibility model in a way dummies can understand it quickly.
Three top SQL queries you need to get Table metadata. Metadata means Table structure. That means to know indexes and columns of a Table in question.