Advanced SQL Interview Questions and Answers, Advanced SQL tutorial pdf, any recommended websites for sql puzzles, Best SQL Puzzles, Buy SQL Server Interview Questions Book Online at Low Price, Calculating nth Max salary, Check Prime Number puzzle, Circular prime number puzzle, Circular Prime Number Puzzlre, COmples tSQL puzzles, Complex SQL Challenges, complex sql statement(puzzle), Complex tsql, Complex TSQL Challenge, convert string to proper case in sql server, Divide rows into two columns, Download SQL Questions, Download SQL Server Interview Question in PDF, Download SQL SERVER Interview questions, Download SQL Server Interview questions and answers, download sql server interview questions and answers pdf, download sql server interview questions by Pawan Khowal, download sql server interview questions by Pawan Kumar, download sql server interview questions by Pawan Kumar Khowal, Download T-SQL Interview Questions, Even Odd Count Puzzle, Excellent t-SQL puzzles, Find nth highest salary, Find Nth maximum value in SQL Server, find records not ending with s, find records not ending with s puzzle, Finding prime numbers with SQL server, First letter upper case for each word in sql server, Free Download SQL SERVER Interview questions, Generate possible combinations puzzle, Get nth highest and lowest salary of an employee, Getting group by sum and total sum in a single query, Group by numbers that are in sequence, group sum total in one query, implementation and administration, Improve SQL Skills, Interesting Interview Questions, Interview Puzzles in SQL Server, Interview Qs.SQL SERVER Questions, Interview questions and Answers for MS SQL Server designing, Interview Questions and Answers For SQL, Interview questions on Joins, Interview Questions on SQL, Interview SQL Puzzles, InterviewQuestions, InterviewQuestions for SQL, Joins, Joins Interview questions, Joins Puzzle, Khowal, last non null puzzle, Learn complex SQL, Learn SQL, Learn T-SQL, Microsoft SQL Server interview questions for DBA, MS SQL Server interview questions, MSBI Interview Questions, Multiple Column Pivoting Puzzle, Multiplication of Digits Puzzle, Multiply digits of a number, multiply digits of a number puzzle, nth maximum & minimum salary in a single sql query, Objective Puzzle, Pawan, Pawan Khowal, Pawan Kumar, Pawan Kumar Khowal, PL/SQL Challenges, Prev Value puzzle, Previous value puzzle, Prime numbers after given number puzzle, Prime numbers using SQL, Program to Print prime numbers, Puzzle SQL, puzzle sql developer, Puzzle SQl Server, Puzzles, PUzzles in SQL SERVER, Queries for SQL Interview, Records not ending with a character Puzzle, Records not ending with s Puzzle, Replace string puzzle, SELECT Puzzle, Single Query multiple conditions puzzle, Smart Replace puzzle, Split & Count Puzzle, Split & count puzzle in SQL, Split and Count puzzle SQL Server, SQL, sql - How to find third or nth maximum salary from salary table?, SQL - The Pattern Puzzles, SQL 2012, SQL 2014, SQL 2014 Interview Questions, SQL Challenge, SQL Challenges, SQL Extreme Difficult Puzzle, SQL FAQ, SQL FAQs, sql group by only rows which are in sequence, SQL Interview Q & A, SQL Interview Questions, SQL Interview Questions - Part 2, SQL Interview Questions for SQL Professionals, SQL Joins, SQL Pattern Puzzles, SQL pl/sql puzzles, SQL prime number puzzle, SQL puzzle, SQL Puzzle | 2nd Highest Salary in Each Department using OffSet & Fetch Method, SQL Puzzle | Find Different Values Puzzle, SQL Puzzle | Get Weeks (Start Date - End Date) for a Month & Year, SQL Puzzle | How to get Date Part & Time Part only from DateTime in Sql Server [Multiple Methods], SQL Puzzle | Multiplication of Digits Puzzle, SQL Puzzle | Star Pattern Puzzle ( Fun with SQL ), SQL Puzzle | The Fiscal Puzzle - II, SQL Puzzle | The Middle 4 Puzzle, SQL Puzzle | The Missing Gaps Puzzle [Multiple Solutions], SQL Puzzle | The Time Difference Puzzle, SQL Puzzles, sql puzzles & answers, sql puzzles and answers free download, sql puzzles and answers pdf, sql puzzles for interview, sql puzzles oracle, SQL Queries, SQL Queries asked in interviews, SQL QUERY PUZZLES, SQL Query to Find Nth Highest Salary of Employee, SQL Questions, SQL Quiz, SQL Replace Puzzle, SQL Server - Common Interview Questions and Answers, SQL SERVER - Find Nth Highest Salary of Employee, SQL Server - General Interview Questions and Answers, SQL SERVER - Group sum, sql server - How to find the nth highest salary in SQL?, sql server 2008 interview questions, SQL Server 2008 Interview Questions and Answers, SQL Server Database, SQL Server database developer interview questions and answers, sql server dba interview questions, SQL Server developer Interview questions and answers, SQL Server developer Interview questions with answers, SQL Server Developer T-SQL Interview Questions, SQL server filter index with LIKE and RIGHT function?, SQL SERVER Indexes, SQL Server Interview Puzzle, SQL SERVER Interview questions, SQL SERVER Interview questions & Answers, SQL Server Interview Questions - Part 1, SQL Server Interview questions and answers, SQL Server Interview Questions and Answers - Free PDF, SQL SERVER Interview questions and answers for experienced, sql server interview questions and answers for net developers, SQL Server Interview Questions And Answers.pdf, sql server interview questions by Pawan Khowal sql interview questions, SQL SERVER Interview questions pdf, SQL Server Interview Questions | MSBISKILLS.Com, SQL Server Interview Questions | MSBISKILLS.com Top 50 SQL Server Questions & Answers, SQL Server Interview Questions/Answers Part-1, SQL Server Puzzle, SQL SERVER Puzzles, SQL server Questions and Answers, SQL SERVER Tips, SQL Skills, SQL Sudoku, SQL Tips & Tricks, SQL Tips and Tricks, SQL Top clause, SQL Tough Puzzle, SQL Tricks, SQL Trikcy question, sql/database interview for puzzle sql developer, SQLBI Interview Questions, SQLSERVER, Star Pattern Puzzle, Sum of digits puzzle, Sum of digits SQL puzzle, SUM of grouped COUNT in SQL Query, T SQL Puzzles, T-SQL Challenge, T-SQL Interview Questions | SQL Server Interviews and Jobs, T-SQL Puzzle, T-SQL Query | [ Replace 6 Consecutive Digits with x from a string Puzzle ], T-SQL Query | [ The Complex Week Puzzle ], T-SQL Server Interview Questions, T-SQL Tricky Puzzles, The % percentage puzzle, The Biggest Gap Puzzle, The Gap Puzzle, The Gap Puzzle Puzzle, The In Puzzle, The InNotIn Puzzle, The Middle 4 Puzzle, The Middle 4 SQL Puzzle, The Multiple Sums Puzzle, The new rows count puzzle, The Prime Number Puzzle, The Replace Puzzle, The Time Difference Puzzle, The Tree Puzzle, The Update Puzzle, Top 10 Frequently Asked SQL Query Interview Questions, TOP 100 SQL SERVER INTERVIEW QUESTIONS QUERIES, Top 50 SQL Server Interview Question for Testers, TOP Clause, Tough SQL Challenges, Tough SQL Puzzles, Tricky Questions, TSQL, TSQL Challenge, TSQL Challenges, TSQL Interview questions, TSQL Puzzle, TSQL Puzzles, TSQL Queries, Update one table and Insert in another table using single T-SQL statement at same time, Week puzzle, Write a SQL Query to Calculate the longest period ( in days ) that the company has gone without hiring or firing any one, [Solved] sql query for nth highest & lowest salary
SQL Puzzle | The Longest Period – II
This puzzle is simple. Write a SQL Query to Calculate the longest period ( in days ) that the company has gone without hiring or firing any one.
|1||1000||A||Z||300000.000||2001-09-01 00:00:00.000||2010-01-16 00:00:00.000|
|3||1000||C||X||500000.000||2010-01-15 00:00:00.000||2015-12-02 00:00:00.000|
|5||1000||D||Q||200000.000||2014-04-15 00:00:00.000||2015-12-02 00:00:00.000|
- The challenge is to do it with T-SQL statements only.
- Add your solution(s) in the comments section or send you solution(s) to email@example.com
Script | use below script to create table and insert some sample data
-- CREATE TABLE Employeex ( EmployeeId BIGINT ,DepartmentId INT ,FirstName VARCHAR(1) ,LastName VARCHAR(1) ,Salary NUMERIC(10,3) ,HireDate DATETIME ,TerminationDate DATETIME ) GO INSERT INTO Employeex VALUES (1,1000,'A','Z',300000,'2001-09-01 00:00:00.000','2010-01-16 00:00:00.000'), (2,1000,'B','Y',350000,'2003-03-15 00:00:00.000',NULL), (3,1000,'C','X',500000,'2010-01-15 00:00:00.000','2015-12-02 00:00:00.000'), (4,1000,'D','W',400000,'2012-05-15 00:00:00.000',NULL), (5,1000,'D','Q',200000,'2014-04-15 00:00:00.000','2015-12-02 00:00:00.000'), (6,1000,'E','P',300000,'2015-08-01 00:00:00.000',NULL), (7,1000,'F','N',600000,'2015-12-01 00:00:00.000',NULL), (8,1000,'G','O',700000,'2015-12-01 00:00:00.000',NULL), (9,1000,'H','P',1000000,'2016-01-01 00:00:00.000',NULL) GO --
SOLUTION – 1
-- SELECT MAX(dr) [LongestPeriod] FROM ( SELECT DATEDIFF(d, a, ISNULL(LEAD(a) OVER (ORDER BY a),GETDATE())) dr FROM ( SELECT HireDate a FROM Employeex UNION ALL SELECT TerminationDate FROM Employeex WHERE TerminationDate IS NOT NULL )t )r --
SOLUTION – 2
-- SELECT MAX(gap) [LongestPeriod] FROM ( SELECT DATEDIFF(D, EmpDate, ISNULL(LEAD(EmpDate) OVER (ORDER BY EmpDate),GETDATE())) as gap FROM ( SELECT EmpDate FROM Employeex UNPIVOT(EmpDate FOR DateVal IN (HireDate, TerminationDate)) AS U )TblEmp )TempEmp --
Add a comment if you have a solution in mind. I would love to learn it. We all need to learn.
Enjoy !!! Keep Learning
IF OBJECT_ID(‘tempdb..#temp’) IS NOT NULL
DROP TABLE #temp
create table #temp(row_num int,EmployeeId int ,TerminationDate date)
insert into #temp(row_num,EmployeeId,TerminationDate)
select ROW_NUMBER()over (order by EmployeeId) as row_num ,EmployeeId,TerminationDate from Employeex where TerminationDate is not null
SELECT max(DATEDIFF(DAY, a1.HireDate, a2.HireDate)) as [No.ofdays without hiring] ,null as [No.ofdays without Firing]
from Employeex a1 inner join Employeex a2 on a2.EmployeeId=a1.EmployeeId+1
select null as [No.ofdays without hiring],max(DATEDIFF(DAY, a1.TerminationDate, a2.TerminationDate)) as [No.ofdays without Firing] from #temp a1
inner join #temp a2 on a2.row_num=a1.row_num+1
Pawan Kumar Khowal said:
Sorry it is nor giving proper result.
try with below data..
DELETE FROM employeex
INSERT INTO Employeex VALUES
(1,1000,’A’,’Z’,300000,’2001-09-01 00:00:00.000′,’2010-01-16 00:00:00.000′),
(3,1000,’C’,’X’,500000,’2004-01-15 00:00:00.000′,’2010-12-02 00:00:00.000′),
(5,1000,’D’,’Q’,200000,’2006-04-15 00:00:00.000′,’2008-12-02 00:00:00.000′),
[No.ofdays without hiring] is 560 and
[No.ofdays without Firing] is 320
is it right ?
Pawan Kumar Khowal said:
Number of days without hiring or firing… Answer for the data I have given is 2129.
LikeLiked by 1 person
Soumyendu Paul said:
With Cte as
(Select EmpDate from Employeex
unpivot(EmpDate for Dates in(HireDate,TerminationDate))As upvt),
(Select EmpDate,ROW_NUMBER()over(order by EmpDate)rnk from Cte),
(Select DATEDIFF(D,a.EmpDate,b.EmpDate) [Diff] from Cte1 as a join Cte1 as b
Select Max(Diff) [Max Diff] from Cte_diff
LikeLiked by 1 person
;with cte as (
select Hiredate from Employeex
select Terminationdate from Employeex where Terminationdate is not null
(select Hiredate,DATEDIFF(Day,Lag(Hiredate)over(order by Hiredate),HireDate)daysgap from cte
)select Top 1 daysgap from cte2 order by daysgap desc