Module 13 (Introduction to SQL - Part 2).pdf
Module 13 (Introduction to SQL - Part 2).pdf
Module 13 (Introduction to SQL - Part 2).pdf
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The JOIN ClauseTo retrieve joined data from two or more tables,the tables must first share a meaningfulrelationship. The tables <strong>to</strong> be joined must possessa column or columns that share a common set ofvalues that allow the tables <strong>to</strong> be meaningfullinked.The common column(s) are called the join key orcommon key.