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part A. It is not uncommon to have to retrieve data that resides in several tables, especially when formulating a report. Discuss some of the
part A. It is not uncommon to have to retrieve data that resides in several tables, especially when formulating a report. Discuss some of the performance issues when querying three or four tables at a time.
part B. Why does using a wildcard in a JOIN cause performance issues - how can you solve them?
part C. Is there anything we can do to increase the performance of a multi-table JOIN?
SQL
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