what is the diffrence between inner and outer join

Answer Posted / apoorv sharma

You use INNER JOIN to return all rows from both tables where
there is a match. ie. in the resulting table all the rows
and colums will have values.

In OUTER JOIN the resulting table may have empty colums.
Outer join may be either LEFT or RIGHT

LEFT OUTER JOIN returns all the rows from the first table,
even if there are no matches in the second table.

RIGHT OUTER JOIN returns all the rows from the second table,
even if there are no matches in the first table.

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