What is Cross Join

Question Posted / ramesh

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What is Cross Join..

Answer / ramesh

A join with out condition is called CrossJoin.
It also called as cartesionjoin.
It produces resultset where every row is first table joined
with every row in second table.

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What is Cross Join..

Answer / kuldeep sharma

SQL Cross Join...>Cartesian product of both tables.

Example:
Let left table has 10 rows and right table has 8 rows then
SQL CROSS Join will return 180 rows combining each record
of left table with all records of right side table.
Consider the following example of CROSS Join:

USE PUBS
SELECT AU_FNAME, AU_LNAME, PUB_NAME
FROM AUTHORS CROSS JOIN PUBLISHERS
ORDER BY AU_FNAME

Above cross join will return 23 * 8 = 184 results by
multiplying each row of authors table with publishers table.

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What is Cross Join..

Answer / colin

A small error kuldeep..if left table has 10 rows n right
table has 8 rows..then a cross join wud return 80 rows
(10*8)..besides dis ur totally ryt.. Cross joins are also
called cartesian product..

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