how to find the First and Last Observation from the table: Ex: OBS Name Sal Ans like: OBS Name Sal 105 E 5000--> 105 E 5000 102 B 2000 104 D 4000 103 C 3000 101 A 1000--> 104 D 4000

4 Answers  

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How many commands are there in sql?

0 Answers  

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How do I view output in sql developer?

0 Answers  

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Which one is the Best approach to put code, among Triggers and Procedures? Explain?

1 Answers   Sierra Atlantica,

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Why do we need pl sql?

0 Answers  

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Show the two pl/sql cursor exceptions.

0 Answers  

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Talk about views

10 Answers   Polaris,

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Is sql better than access?

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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Explain the steps needed to create the scheduled job?

0 Answers  

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what is data control language? : Sql dba

0 Answers  

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how to retrieve the top 3 salaries of the table using rownum

31 Answers   Oracle,

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