Oracle Join | Oracle Joins - oracle tutorial - sql tutorial




What is Oracle Joins ?

  • Oracle Joins are used to retrieve data from multiple tables.
  • An Oracle JOIN is performed whenever two or more tables are joined in a SQL statement.
  • Oracle join query

    Oracle Join Query - Inner Join Query - Left Outer Join Query - Right Outer Join Query - Full Outer Join Query

  • There are four different types of Oracle joins:

Oracle INNER JOIN:

  • Inner Join is the simplest and most common type of join.
  • It is also known as simple join.
  • It returns all rows from multiple tables where the join condition is met
  • It is also called as simple join.

Oracle LEFT OUTER JOIN:

  • Left Outer Join returns all rows from the left (first) table specified in the ON condition.
  • Only those rows from the right (second) table where the join condition is met.
  • It is also called as left join.

Oracle RIGHT OUTER JOIN :

  • The Right Outer Join returns all rows from the right-hand table specified in the ON condition
  • Only those rows from the other table where the join condition is met.
  • It is also called as right join.

Oracle FULL OUTER JOIN :

  • The Full Outer Join returns all rows from the left hand table and right hand table.
  • It places NULL where the join condition is not met.
  • It is also called as full join.

Oracle ALL Joins

Oracle ALL Joins

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