Does pl/sql support create command?

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What is difference between sql and excel?

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What are wait events. Describe the wait event tables.

1 Answers   CTS,

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Is keyword pl sql?

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what is text? : Sql dba

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What does cursor do in sql?

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what is the difference between a having clause and a where clause? : 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 denormalization in a database?

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Is a foreign key always unique?

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What is the difference between anonymous block and named block or stored procedure?

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How to get each name only once from an employee table?

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