Top Ten Tips: sorting, grouping, and summarising SQL data
Arranging data in a manner that's meaningful can be a challenge. Sometimes a simple sort will do it. But sometimes you will need to do more by creating groups to analyse and summarise. Fortunately, SQL offers a number of clauses and operators for sorting, grouping, and summarising. The following tips will help you discern when to sort, when to group, and when and how to summarize.
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