Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / saikat mukherjee
The observed improvement is due to the fact that the
nonclustered index contained all of the required information
to resolve the query. No Key Lookups were required. An index
that contains all information required to resolve the query
is known as a "Covering Index"; it completely covers the query.
| Is This Answer Correct ? | 1 Yes | 2 No |
Post New Answer View All Answers
What is optimization and its types?
What are the recovery models for a database?
Write a SQL query to make a column as unique?
What are policy management terms?
What are the different acid properties?
Explain the difference between control flow and data flow?
What are the built in functions in sql server?
Explain the steps needed to create a scheduled job?
How do I debug a stored procedure in sql server?
can you instantiate a com object by using t-sql? : Sql server database administration
What are the types of user defined functions in sql server?
Determine when to use stored procedure to complete sql server tasks?
This question asked during interview, 2) At the end of each month, a new table is created for each bank that contains monthly metrics consolidated at the account level. The table naming convention is bankX_YYYYMM where X represents the numeric designation of the bank and YYYYMM indicates the 4 digit year and 2 digit month. The tables contain the following fields: name data type description account text account number registered boolean indicates whether the account is registered num_trans integer number of transactions made during the time period spend numeric(9,2) total spend during the time period a) Write a SQL query that will display the total number of transactions and total spend for "Bank1" during the 4th quarter of 2009. b) Write a SQL query that will display the total number of transactions and total spend at "Bank1" and "Bank2", broken out by registered vs. non-registered accounts, during January 2010 not sure what is correct answer and how to solve?
What is conditional split?
Is it possible to replicate data from sql server to oracle? : sql server replication
