What does pl sql stand for?

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Explain the difference in execution of triggers and stored procedures?

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What are dml commands?

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What are the different types of sql commands?

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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 are the three pl sql block types?

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what is a control file ? : Sql dba

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What is the difference between a procedure and a function?

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How pl/sql source code can be protected?

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What are pl/sql cursor exceptions?

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Explain the uses of a database trigger?

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What is interval partition?

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