what is sql.

7 Answers   Ericsson, Hewitt,

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What are the conditions an underlying table must satisfy before a cursor can be used by a positioned update or delete statement? : Transact sql

0 Answers  

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how do you count the duplicate records in a table

10 Answers   Tech Mahindra,

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What is minus?

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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Define union, minus, union all, intersect ?

0 Answers  

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What are the differences between implicit and explicit cursors?

0 Answers  

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How do I count rows in sql?

0 Answers  

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Can we call procedure in select statement?

0 Answers  

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What is the difference between syntax error and runtime error?

0 Answers  

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How do I write a cron which will run a sql query and mail the results to agroup?

0 Answers  

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What is normalization and types of normalization?

22 Answers   Etisbew, F-TEC, Microsoft, TechProcess,

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