What are sql injection vulnerabilities?

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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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How to run pl/sql statements in sql*plus?

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what happens if null values are involved in expressions? : Sql dba

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Is ms sql is free?

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I have a CURSOR then why we need BULK COLLECT again?

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How to Execute a Package in PL/SQL.?

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What are different categories of sql commands?

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what is sql in mysql? : Sql dba

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How many indexes can be created on a table in sql?

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What is data control language (dcl)?

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Explain the concept of normalization.

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