What is an index? What are the types of indexes? How many clustered indexes can be created on a table?
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How to set up sql*plus output format in oracle?
What is pivot query?
Does user triggers have entry for trigger with compilation errors?
What happens when a trigger is associated to a view?
Does it possible to pass object (or) table as an argument to a remote procedure?
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.
How to add, remove, modify users using sql?
How can we connect an Android App to an Oracle database and use the PL/SQL procedural code?
How to disable a trigger name update_salary?
Explain clause in sql?
Begin For j in 4403201000 .. 4403202000 Loop If mod (j, 100) = 0 then Dbms_output.put_line (j); End if; End loop; End; what will be the output of this question
What is oracle sql developer?
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