Answer / nashiinformaticssolutions

• Inner Join: Returns matching rows from both tables.
• Left Join (Left Outer Join): Returns all rows from the left table and matching rows from the right table.
• Right Join (Right Outer Join): Returns all rows from the right table and matching rows from the left table.
• Full Join (Full Outer Join): Returns all rows when there’s a match in one of the tables.
• Cross Join: Returns the Cartesian product of both tables.
• Self Join: A table joins itself.
Example Query:
SELECT e1.name, e2.name AS manager_name
FROM employees e1
JOIN employees e2 ON e1.manager_id = e2.id;

Answer / glibwaresoftsolutions

• Inner Join: Returns matching rows from both tables.
• Left Join (Left Outer Join): Returns all rows from the left table and matching rows from the right table.
• Right Join (Right Outer Join): Returns all rows from the right table and matching rows from the left table.
• Full Join (Full Outer Join): Returns all rows when there’s a match in one of the tables.
• Cross Join: Returns the Cartesian product of both tables.
• Self Join: A table joins itself.
Example Query:
SELECT e1.name, e2.name AS manager_name
FROM employees e1
JOIN employees e2 ON e1.manager_id = e2.id;

Answer / hr@tgksolutions.com

• Inner Join: Returns matching rows from both tables.
• Left Join (Left Outer Join): Returns all rows from the left table and matching rows from the right table.
• Right Join (Right Outer Join): Returns all rows from the right table and matching rows from the left table.
• Full Join (Full Outer Join): Returns all rows when there’s a match in one of the tables.
• Cross Join: Returns the Cartesian product of both tables.
• Self Join: A table joins itself.
Example Query:
SELECT e1.name, e2.name AS manager_name
FROM employees e1
JOIN employees e2 ON e1.manager_id = e2.id;

type type_name is table of varchar2(30) index by binary_integer for the above type you have to create a identifier... like identifier_name type_name; for the above type you can use the below methods..like first , last , prior, next , delege..etc...like this.. if you create a cursor...like cursor cursor_name is select * from scott.emp; is there any methods like above to use prior, fist , last , next , trim ,etc...

1 Answers   Satyam,

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