what is the purpose of update command in oracle?

7 Answers   MBT,

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How to avoid using cursors?

0 Answers  

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What is pl sql package?

0 Answers  

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In what condition is it good to disable a trigger?

0 Answers  

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What is pls_integer in pl sql?

0 Answers  

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What do you mean by table in sql?

0 Answers  

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Which function is used to return remainder in a division operator in sql?

0 Answers  

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Explain what is rdbms?

0 Answers  

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Name the tables where characteristics of Package, procedure and functions are stored ?

3 Answers  

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What is sql architecture?

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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Write a query to get last 10 records from the table.

12 Answers   iNautix,

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