which operator is used in query for pattern matching? : Sql dba

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what is Hash join?how it is different from inner join?what is the sign used for inner join?(eg: like the (+) sign used for outer join)?

3 Answers   TCS,

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Does a user_objects view have an entry for a trigger?

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What is package in pl sql?

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What is consistency?

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How consistent is the view of the data between and within multiple sessions, transactions or statements ?

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What is full join in sql?

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What operating systems are supported by oracle sql developer?

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how to delete duplicate rows from a join tables(I have three tables on that join) how do you know which join is need to be used? The select statement I have is: SELECT gc_skill_type.skill_type, gc_area_tec.area, gc_technology.technology, gc_technology.id_technology, gc_area_tec.id_area_tec FROM gc_skill_type, gc_area_tec, gc_technology WHERE gc_area_tec.id_skill_type (+) = gc_skill_type.id_skill_type AND gc_technology.id_area_tec (+) = gc_area_tec.id_area_tec order by gc_skill_type.skill_type asc, gc_area_tec.area asc, gc_technology.technology asc

1 Answers   IAS,

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What is primary key and foreign key with example?

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How many sql statements are used? Define them.

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What is meant by <> in sql?

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