what is the cursor and use of cursor in pl/sql ?

4 Answers  

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What is a .db file?

0 Answers  

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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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What are two parts of package ?

2 Answers   Infosys,

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What is the difference between function and procedure in pl/sql?

0 Answers  

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Differentiate pl/sql and sql?

0 Answers  

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Cite the differences between execution of triggers and stored procedures?

0 Answers  

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How to execute a stored procedure?

0 Answers  

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What is difference between Procedures and Functions ?

6 Answers   Hi Caliber IT,

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i have a table eno dno sal 1 10 200 2 10 150 3 10 100 4 20 75 5 20 100 i want to get sal which is less than the avg sal of thri dept. eno dno sal 2 10 150 3 10 100 4 20 75

12 Answers   IBM,

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Which one is faster ienumerable or iqueryable?

0 Answers  

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I Have A Table Like This. Cityno Cityname Mails 1 Bangalore 8km 2 Hsr Layout 20km 3 Mejistic 30km 4 Jayadeva 55km 5 Itpl 80km 6 Hebbal 115km I Have Data Like This I Want O/p Like This Distance No.ofcity 0-50km 3 51-100km 2 101-150km 4 And So On

6 Answers   DELL, HCL, Oracle,

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