how to join tables in SQL

When working an sql select query, in all probability we’d have a necessity to ship in information from totally different tables. The motive for this , is that tables have a specific goal for the data they retailer. One of a really highly effective choices in an info construction, is to avoid duplication. This has the have an effect on of solely storing information on a desk that is required. As a consequence turning into a member of tables is important in order for you to get all the information you need . As an illustration on a purchaser purchase , the acquisition particulars may very well be on the acquisition desk. BUT the consumer particulars would not be

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