For customer_id = 101: amounts are 500 + 700 = 1200. For customer_id = 102: amount = 300. The query uses GROUP BY customer_id, which correctly groups and sums amounts.
Build a portfolio of SQL projects, starting small and then moving to more complex ones. Showcasing these on platforms like ...
The SQL Developer unit testing framework involves a set of sequential steps for each test case. The steps are as follows, including the user input for before the step is run and the framework ...
A free tool to reduce coding for developers who like to surface T-SQL database recordsets in a simple collection of customized POCO objects. Every so often, I find myself wishing that I had a utility ...
Unfortunately, not every SQL database is always available when we expect it to be. When you're creating automation scripts to discover, add, update or remove records from a remote SQL database, you ...
Experimental PostgreSQL-Compatible Time-Travel Database (v0.7.3-alpha) - An ambitious temporal database project with advanced architectural designs for enterprise features. Query your data at any ...
Unfortunately, not every SQL database is always available when we expect it to be. When you're creating automation scripts to discover, add, update or remove records from a remote SQL database, you ...
The SQL Server team is unleashing the first widespread test builds of the next version of Microsoft's database, a k a ""="">). Earlier this year, Microsoft officials said to watch for a Community ...
The devices underpinning today's communications networks grow increasingly powerful, in their speed, throughput, features and supported services. That's great for users – but it presents a significant ...
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