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In this post, you will find the solution for Print Prime Numbers in SQL-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.
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Introduction To SQL
SQL stands for Structured Query Language. SQL is used to create, remove, alter the database and database objects in a database management system and to store, retrieve, update the data in a database. SQL is a standard language for creating, accessing, manipulating database management system. SQL works for all modern relational database management systems, like SQL Server, Oracle, MySQL, etc.
- It is a standard language for Relational Database System. It enables a user to create, read, update and delete relational databases and tables.
- All the RDBMS like MySQL, Informix, Oracle, MS Access and SQL Server use SQL as their standard database language.
- SQL allows users to query the database in a number of ways, using English-like statements.
Link for the Problem – Print Prime Numbers SQL – Hacker Rank Solution
Print Prime Numbers SQL – Hacker Rank Solution
Problem:
Write a query to print all prime numbers less than or equal to 1000. Print your result on a single line, and use the ampersand (&) character as your separator (instead of a space).
For example, the output for all prime numbers would be:
2&3&5&7
Print Prime Numbers SQL – Hacker Rank Solution
SELECT GROUP_CONCAT(NUMB SEPARATOR '&')
FROM (
SELECT @num:=@num+1 as NUMB FROM
information_schema.tables t1,
information_schema.tables t2,
(SELECT @num:=1) tmp
) tempNum
WHERE NUMB<=1000 AND NOT EXISTS(
SELECT * FROM (
SELECT @nu:=@nu+1 as NUMA FROM
information_schema.tables t1,
information_schema.tables t2,
(SELECT @nu:=1) tmp1
LIMIT 1000
) tatata
WHERE FLOOR(NUMB/NUMA)=(NUMB/NUMA) AND NUMA<NUMB AND NUMA>1
)
