How does left join work in sql?


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Which join is default?

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Explain the significance of the & and && operators in pl sql.

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What is indexes?

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what is myisam? : Sql dba

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suppose I have two table one Emp and other is dpt. Emp table has a field ,dept id,name ,sal and dpt table has a field dept id,dept name. Now I want to find out the emplyee list whose sal is between 2000-3000 from dept x.

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Explain the difference between triggers and constraints?

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The select into statement is most often used to create backup copies of tables or for archiving records?

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Mention what does plv msg allows you to do?

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how would concatenate strings in mysql? : Sql dba

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Does pl/sql support create command?

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