How to take user input in pl sql?

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Why is the cursor important?

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What is type and rowtype in pl sql?

0 Answers  

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Find out the 3rd highest salary?

51 Answers   BirlaSoft, DAC, Silvia Infotech, Sutra Infotech,

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what is overloading procedure or overloading function ?

3 Answers   Genpact,

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What is sql engine in oracle?

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What are sql commands?

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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.

3 Answers  

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Which certification is best for sql?

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If there are 1 to 100 numbers in a table and in that 100 numbers some 10 numbers are deleted.I want to find out the missing numbers between 1 to 100 by pl/sql how?

9 Answers   JPMorgan Chase,

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What is trigger explain with example?

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What is intersect?

1 Answers  

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