Since view are created when a query requesting data from view is triggered, its bit slow When views are created for large tables, it occupy more memory . SQL Interview Questions and answers on Stored Procedures and Triggers What is a stored procedure? Stored Procedure is a function which cont...
The use of comparison operators like <,> or = can be done in a subquery. These kinds ofSQL Interview Questionsare a bit difficult to understand and answer accordingly. There are a lot ofSQL Interview Questionsapart from this, which the candidates must practice qualifying for the interview. Fo...
Self join is just like any other join, except that two instances of the same table will be joined in the query. Here is an example: Employees table which contains rows for normal employees as well as managers. So, to find out the managers of all the employees, you need a self join....
The Microsoft SQL Server max degree of parallelism (MAXDOP) configuration option controls the number of processors that are used for the execution of a query in a parallel plan. This option determines the computing and threads resources that are used for the query plan operators that perform the ...
These are just basic questions and you can check the data analyst interview questions here. CLICK HERE TO GET INTERVIEW QUESTIONS FOR TCS… Following are some important Interview Questions for SQL : 1.What is SQL?Where SQL is used? Answer: SQL is Structured Query Language, which is a ...
6. Can we use two CTE’s in a single select query? 7. What are the different join operators in SQL Server? 8. Can we use a table variable inside a nested stored procedure if the table variable created in parent stored procedure?
12.What is Bit-map index?Explain with Example.(80 % Asked in PL SQL Interview Questions) Answer: 1.If Table contains the distinct values which are not more than 20 distinct values then user should go for Bit map indexes. 2.User should avoid the indexing on each and every row and do ...
If you've got an SQL interview coming up, you'll almost certainly be asked about JOIN clauses. Make sure you're prepared by practicing these 5 tough questions on JOINs in advance.
A View is nothing but a select query with a name given to it or we can simply say a view is a Named Query. Ok! Why do we need a view? There can be many answers for this. Some of the important stuff I feel is:• A view can combine data from multiple tables using adequate ...
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