How many indexes can be created on a table in sql?

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3. Select sum(a) sum_1,max(a) max_1 ,count(a) count_1 from ( ( select 1 a from dual union all Select to_number(‘2011’) a from dual union all select 1 a from dual) union select 2 b from dual);

1 Answers   Fintellix,

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What is difference between pls_integer and integer?

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sales persons should always receive commission of 100 at least. employees who r not sales persons should never receive commission.(Triggers)

1 Answers   Fidelity, Oracle,

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What is primary key sql?

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What are secondary keys?

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How many postgresql users are there, worldwide?

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State some properties of relational databases?

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Explain alias in sql?

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what is isam? : Sql dba

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Why do we use set serveroutput on?

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please explain database architecture..

1 Answers   Infosys,

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