How delete a row in sql?

0 Answers  

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How do you get all records from 2 tables. Which join do you use?

8 Answers   Microsoft,

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What SQL keyword must immediately follow the UNION ALL statement? 1. SELECT 2. INTO 3. ORDER 4. WHERE 5. JOIN

4 Answers  

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How to run sql functions in pl/sql?

0 Answers  

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Can you alter start with clause?

1 Answers   TCS,

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Mention what does the hierarchical profiler does?

0 Answers  

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Why do we use triggers?

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Why should I use postgresql?

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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Does inner join return duplicate rows?

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 the types of variables use in pl sql?

0 Answers  

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