Explain how exception handling is done in advance pl/sql?

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Is it possible to sort a column using a column alias?

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How do I copy a table in sql?

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how to create a test table in your mysql server? : Sql dba

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What are all types of user defined functions?

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How to select the Nth maximum salary from Table Emp in Oracle SQL Plus ?

0 Answers   MCN Solutions,

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What is your daily office routine?

0 Answers   Data Vision,

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how do you know if your mysql server is alive? : 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 schema? : Sql dba

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what are all types of user defined functions? : Sql dba

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what is the syntax used for partition in tsql? : Transact sql

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