Can we use the cursor's to create the collection in PL/SQL?

0 Answers   MCN Solutions,

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Can a table contain multiple primary key’s?

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Why is sql better than hql?

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What will be the output for the below Query Select 'High' from dual where null = null;

12 Answers   Infosys, Satyam,

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What is primary key and foreign key?

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SELECT emp_num, years, SUM(salary) FROM sales UNION ALL SELECT emp_id, SUM(takehomepay) FROM marketing What error is present in the sample code above? 1. Queries being combined with the UNION ALL statement are not allowed to have SELECT lists with a different number of expressions. 2. You are not allowed to use aggregate functions within two queries joined by a UNION ALL statement. 3. The UNION ALL statement incorrectly combines the "years" result from the first query with the "SUM (takehomepay)" result from the second query. 4. Unless the UNION ALL statement is replaced with a UNION statement, the queries will return duplicates. 5. The "emp_id" column from the second query must be renamed (or aliased) as "emp_num" so that it corresponds to the column name from the first query. Otherwise, the queries will not execute.

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What is microsoft t sql?

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what is the use of anchoring object? what r the difference between anchoring object & enclosing object? can any one tell me all the details?

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What is trigger in sql and its types?

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Mention what are the benefits of pl/sql packages?

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What are the different dcl commands in sql?

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what is cross join? : Sql dba

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