Given an employee table, how would you find out the second
highest salary?
Answer Posted / trived
select * from emp
where n-1 = (select count(*) from emp e
where emp.salary<e.salary)
in place of n-1 you can keep zero for first hight salary
and 1 for second hightest salary.....etc
| Is This Answer Correct ? | 9 Yes | 3 No |
Post New Answer View All Answers
What are the 18 schemas?
A) Which two are benefits of Teradata's support for ANSI Standard SQL? (Choose two.) 1.data is distributed automatically 2.queries get optimized to better plans 3.submit queries from other database systems 4.can interface with BI tools B) Which statement is true when comparing the advantages of third normal form to star schema? 1.Star schema tends to have fewer entities. 2.Star schema requires additional data storage. 3.Third normal form tends to have fewer entities. 4.Third normal form requires additional data storage. C)Which two sets of functions does the Parsing Engine (PE) perform? (Select two.) 1.sorting, formatting, and aggregating of the final answer set 2.flow control of the data to and from the participating tables 3.SQL statement interpretation, syntax validation, and semantic evaluation 4.dispatching the step execution sequence to the AMP via the BYNET D) Which two can be achieved with Teradata Active System Management (TASM)? (Choose two.) 1.disable hardware 2.react to hardware failure 3.influence response times 4.collect metadata E) Which three mechanisms can be used to ensure security within the Teradata Database? (Choose three.) 1.views 2.spool limits 3.roles 4.access rights 5.profiles
How can I detect whether a given connection is blocked?
How to customize error conditions.
What are the three basic rules which are to be followed for the relational model of the database?
The count() function always returns a int value type what should you do if you need to count rows from a query which you know will return a value that is too large for an int value type?
Explain what a database is?
How you can make a parameterized view?
Explain about the storage and physical database design?
Explain about the database management systems.
1. Using the XML Document below, with the URI “recipe.xml”
define
the following queries in XQuery:
a.) Give the names of all breakfast in the menu.
b.) Select breakfasts that have price lower than $7.00?
How to generate OIDS
If a column is an image value type, how you can compare column values? How can you use this column in join clause?
To convert IDMS to DB2, how to deal with IDMS occurs and redefined clause?
fact table and dimension table containg one to many relationship or many to one relastionship