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Wednesday, 5 January 2011

What is Different Types of Join ?


JOIN              : Return rows when there is at least one match in both tables


LEFT JOIN   : Return all rows from the left table, even if there are no matches in the right table

RIGHT JOIN : Return all rows from the right table, even if there are no matches in the left table

FULL JOIN    : Return rows when there is a match in one of the tables

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