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Temporary table vs Table variable in sql server?

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Other SQL PLSQL Interview Questions
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scope of exception handling in plsql Wipro 3
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.   3
What is oracle ? why we should go for oracle database instead of diffrent databases available in the industry. Polaris 5
How can I pass the inner procedure value to outer procedure ?   2
Wat is SGA ? ABB 3
What are different types of refreshment techniques of materialised view   2
if we give update table_name set column_name= default. what will happen? its given in pl sql block.what will hapen? iFlex 5
What are all the difference between Like and Contains ? LG-Soft 2
1. what is the exact use of hint in sql. 2. How we can avoid index scan in sql even though index is there in the table. Polaris 1
what is meant by tuning and tk proof?   2
i have doubt that any one tell ref cursor comes in sql pl/sql? pls clarify? Tech-Mahindra 4
how to find the First and Last Observation from the table: Ex: OBS Name Sal Ans like: OBS Name Sal 105 E 5000--> 105 E 5000 102 B 2000 104 D 4000 103 C 3000 101 A 1000--> 104 D 4000   3
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