Here is a list of most asked SQL queries interview questions. Sample tables are listed to visualize the data and associate with query answers given. Each of the queries in our SQL tutorial is consequential to almost every system that interacts with an SQL database. 33. Create Table: In this SQL Server query we will learn How to create table in SQL Server.. We could modify this SQL CREATE TABLE statement and define the supplier_id as the primary key as follows: Create a SQL table called customers that stores customer ID, name, and address information. Can you show one row twice in results from a table? 12, c.Error d.1, Options - a.TD b. A) select * from emp; 2.
As we mentioned earlier, SQL usually treats a table not as a set but rather as a multiset; duplicate tuples can appear more than once in a table, and in the result of a query. 34. In this article we will learn about some of the mostly used SQL Server queries every developer should know. What is wrong with the following query? (Incorrect syntax near the keyword. Display all the information of the EMP table?
Will the following statements execute? 18. 15. It is a simple example to demonstrate the SQL Server derived table. 29. What will be the output of given statement?
This SQL CREATE TABLE example creates a table called suppliers which has 3 columns. Error c. 1 d.0, Options - a.TDAD b. This can be done using Common Table Expression without using a loop. 8. Write a query to get employees whos ID is an odd number. 35.
Can you write a query to get employee names starting with a vowel? How can you get random employee record from the table? Watch Day 2 here. 4. 24. Please re-enable javascript in your browser settings. List the emps in the asc order of their Salaries? Now, can you find 3rd, 5th or 6th i.e. Can you write a query to find employees with age greater than 30? Print the expression 'NUMBER' if valid, 'NOT NUM' if not valid. 5. WHERE Dname=‘Research’ AND Dno=Dnumber; Q10A: SELECT * FROM EMPLOYEE, DEPARTMENT; 4. Use auto increment primary key "add" if not available in the table, as in given example. 19. ... As per SQL Server logic, it works on 3 values in matching conditions. Here you will get only one record of "empone". N'th highest Salary? Error c. T2D d.0, 30. The primary key for the employees table should be the employee number. 1. How can you find duplicate records in Employee table? Can you write a query to print prime numbers from 1 to 100? Can you write a query to get employee names ending with a vowel?
11. 32.
If all values from tbl2 are deleted. 22. Here, 2= 3-1 i.e.
Employee and Manager ID are in the same table; can you get manager names for employees?
Could you tell the output or result of the following SQL statements?
The syntax for the CREATE TABLE statement in SQL is: Let's look at a SQL CREATE TABLE example.
10. (0, 3 or 9). There are multiple ways to do this. There are multiple options to perform this operation.
What will be the output of following queries? Consider following 3 tables with one column, How many rows will following query return? 12. The following query will not fetch record with the salary of 6000 but also will skip the record with NULL. TechOnTheNet.com requires javascript to work properly. Embed analytics and dashboards right inside your app with a JS SDK. 1. SQL is incredibly powerful, and like every well-made development tool, it has a few commands which it’s vital for a good developer to know. Can you get employee details whose department id is not valid or department id not present in department table? What is an alternative for TOP clause in SQL? 9.
TRUE or FALSE and UNKNOWN.