Below we have listed all the SQL Interview Questions and answers. Feel free to comment on any SQL Interview Questions or answer by the comment feature available on the page.
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SQL (pronounced "ess-que-el") stands for Structured Query Language. SQL is used to communicate with a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems. SQL consists of a data definition language, data manipulation language, and Data Control Language. The scope of SQL includes data insert, query, update and delete, schema creation and modification, and data access control. Although SQL is often described as, and to a great extent is, a declarative language (4GL), it also includes procedural elements.
|Which command displays the SQL command in the SQL buffer, and then executes it?|
|What is SQLPlus?|
|What is integrity in sql?|
|What is the difference between a Local and a Global temporary table?|
|What are indexes?|
|What is Union, minus and Interact commands?|
|I have a table with duplicate names in it. Write me a query which returns only duplicate rows with number of times they are repeated.
|How can we delete records in a table using update table?
|How to find the second highest salary from employee table? and how to write it?|
|What are the data types allowed in a table?|
|given a table of student(rollno,name,dno,dateofadmission,city) and department(dno,dname)...How u will found the rollno,class,deptname of students in ascending order of their departments?|
|What is difference between Oracle and MS Access?
What are disadvantages in Oracle and MS Access?
What are features & advantages in Oracle and MS Access?
|What are the advantages of client/server model ?
|What is the use of DESC in SQL?|
|Identify error in following SQL:
SELECT EMPNO, SUM(SAL)
GROUP BY EMPNO
HAVING ENAME= ?KENT?
a) Syntax Error
b) SUM() is not an aggregate function
c) HAVING can not be used with GROUP BY
d) The Having condition has to be based on some column that appears in the select list.
|What is SQL Server Agent?|
|Which of the following statements is true about implicit cursors?|
|What is the difference between "select * from table name" and "select column_name from table name" The above quiries are simple select quiries without having any "where" clause. Secondly which query will be performed faster and why??|
|What is the advantage to use trigger in your PL?
|What's the difference between a primary key and a unique key?|
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Latest 20 Questions
Payment of time- barred debt is:
Consideration is defined in the Indian Contract Act,1872 in: (a) Section 2(f) (b) Section 2(e) (c) Section 2(g) (d) Section 2(d)
Which of the following is not an exception to the rule, "No consideration, No contract": (a) Natural love and affection (b) Compensation for involuntary services (c) Completed gift (d) Agency
Consideration must move at the desire of: (a) The promisor (b) The promisee (c) The promisor or any other party (d) Both the promisor and the promisee
An offer which is open for acceptance over a period of time is: (a) Cross Offer (b) Counter Offer (c) Standing Offer (d) Implied Offer
Specific offer can be communicated to__________ (a) All the parties of contract (b) General public in universe (c) Specific person (d) None of the above
_________ amounts to rejection of the original offer. (a) Cross offer (b) Special offer (c) Standing offer (d) Counter offer
A advertises to sell his old car by advertising in a newspaper. This offer is caleed: (a) General Offer (b) Special Offer (c) Continuing Offer (d) None of the above
In case a counter offer is made, the original offer stands: (a) Rejected (b) Accepted automatically (c) Accepted subject to certain modifications and variations (d) None of the above
In case of unenforceable contract having some technical defect, parties (a) Can sue upon it (b) Cannot sue upon it (c) Should consider it to be illegal (d) None of the above
If entire specified goods is perished before entering into contract of sale, the contract is (a) Valid (b) Void (c) Voidable (d) Cancelled
______________ contracts are also caled contracts with executed consideration. (a) Unilateral (b) Completed (c) Bilateral (d) Executory
A offers B to supply books @ Rs 100 each but B accepts the same with condition of 10% discount. This is a case of (a) Counter Offer (b) Cross Offer (c) Specific Offer (d) General Offer
_____________ is a game of chance. (a) Conditional Contract (b) Contingent Contract (c) Wagering Contract (d) Quasi Contract
There is no binding contract in case of _______ as one's offer cannot be constructed as acceptance (a) Cross Offer (b) Standing Offer (c) Counter Offer (d) Special Offer
An offer is made with an intention to have negotiation from other party. This type of offer is: (a) Invitation to offer (b) Valid offer (c) Voidable (d) None of the above
When an offer is made to the world at large, it is ____________ offer. (a) Counter (b) Special (c) General (d) None of the above
Implied contract even if not in writing or express words is perfectly _______________ if all the conditions are satisfied:- (a) Void (b) Voidable (c) Valid (d) Illegal
A specific offer can be accepted by ___________. (a) Any person (b) Any friend to offeror (c) The person to whom it is made (d) Any friend of offeree
An agreement toput a fire on a person's car is a ______: (a) Legal (b) Voidable (c) Valid (d) Illegal