What is on delete restrict?

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How do I order by ascending in sql?

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how will u find statistics of a database objects?

2 Answers   iFlex,

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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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Why is normalization important?

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What is the maximum database size for sql express?

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How do you sort in sql?

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Can we commit in trigger?

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What is the relation b/w view and trigger

3 Answers   Accenture, TCS,

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How do I sort a table in sql?

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how to fetch alternate records from a table? : Sql dba

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How to write a single statement that concatenates the words ?hello? And ?world? And assign it in a variable named greeting?

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