what is a tablespace? : Sql dba

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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.

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What is a sql*loader control file?

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Can we enter data in a table in design view?

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Does user triggers have entry for trigger with compilation errors?

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What information is needed to connect sql*plus an oracle server?

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What happens when a trigger is associated to a view?

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Is sql open source?

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Which query operators in sql is used for pattern matching?

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When you have to use a default "rollback to" savepoint of plvlog?

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What is the difference between union and union all command?

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What is sqlservr exe?

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