Why truncate is used in sql?

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Is postgresql a server?

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What's the difference between inner join and left join?

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I have one table and column is c1 pk, c2 not null,c3 not null and 200 row in it and i add c4 column and value, how can is possible

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full outer join syntax

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What is the difference between a primary key and a clustered index?

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What is pl sql package?

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What is sqlca in db2?

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what is the difference between ereg_replace() and eregi_replace()? : Sql dba

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What mean sql?

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I i have 2 tables A & B ,A contains 10 records B contains 20 records ,what w'll be the o/p if we perform equijoin,outer join,right outer join,left outer join,full outer join,cross join seperately Can anyone help on this?

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Do we need commit after truncate?

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