What are joins..how many types of joins are there?
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Answer Posted / rama mohan reddy
ACTUALLY PRIOR 8i THERE ARE 4 TYPES OF JOINS ARE THERE THEY ARE
1. EQUI JOIN
2. NON EQUIJOIN
3. SELF JOIN
4. OUTER JOIN
A) LEFT OUTER JOIN
B) RIHT OUTER JOIN
BUT ANSI PROIDES NEW JOINS FROM 1999 THEY ARE
1. CROSS JOIN
2. NATURAL JOIN
3. USING CLAUSE
4. INNER JOIN //SAME AS EQUI JOIN PRIOR 1999
5. SELF JOIN //SAME AS SELF JOIN PRIOR 1999
6. RIHT OUTER JOIN
7. LEFT OUTER JOIN
8.FULL OUTER JOIN
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