What is meant by Materialized view?

2 Answers   iGate, Marlabs, Polaris,

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Explain the insert into statements in sql?

0 Answers  

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How do I restart sql?

0 Answers  

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What is before and after trigger?

0 Answers  

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What is sql trigger example?

0 Answers  

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What is difference between Procedures and Functions ?

6 Answers   Hi Caliber IT,

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What are sql functions? Describe in brief different types of sql functions?

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 nonstandard string types? : Sql dba

0 Answers  

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select 1,col1,col2 from table1. output?

5 Answers   Ramco,

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What are the modes of parameters that can be passed to a procedure ?

3 Answers  

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What is a schema? How is it useful in sql servers?

0 Answers  

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