I\'m having some serious performance issues with a multi-million row table that I feel I should be able to get results from fairly quick. Here\'s a run down of what I have, how I\'m querying it, and h
I have two tables which get updated at almost the exact same time - I need to join on the datetime column.
I need a little help with ClientDatasets in Delphi. What I want to achieve is a grid showing customers, where one of the columns shows the number of orders f开发者_JAVA技巧or each customer.
For educational purposes I have set up a project layout like so (flat in order to suite eclipse better):
I\'m trying to write a store procedure that can take some input parameters (obviously开发者_JS百科), run multiple queries against those, taking the output from those and doing calculations, and from t
This has always bothered me - why does the GROUP BY clause in a SQL statement require that I include all non-aggregate columns? These columns should be included by default - a kind of \"GROUP BY *\" -
I have a rather large dataset in a long format where I need to count the number of instances of the ID due to two differen开发者_高级运维t variables, A & B. E.g. The same person can be represented
I\'m a Linq beginner so just looking for someone to let me know if following is possible to implement with Linq and if so some pointers how it could be achieved.
I\'d like to get the total count of results and top n rows of some query - is it possible in one statement?
I have three tables, Customers, Sales and Products. Sales links a CustomerID with a ProductID an开发者_高级运维d has a SalesPrice.
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