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Improving my SQL BI Skills

Improving my SQL BI Skills

Daily Archives: December 14, 2017

SQL Puzzle | Failed thrice in last 3 attempts Puzzle

14 Thursday Dec 2017

Posted by Pawan Kumar Khowal in SQL SERVER, SQL SERVER Puzzles, T SQL Puzzles, Tricky SQL Queries

≈ 1 Comment

Tags

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, 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, Free Download SQL SERVER Interview questions, Get Next Value Puzzle, Huge blank areas in database field, Improve SQL Skills, 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, Learn complex SQL, Learn SQL, Learn T-SQL, Microsoft SQL Server interview questions for DBA, MS SQL Server interview questions, MSBI Interview Questions, Objective Puzzle, Pawan, Pawan Khowal, Pawan Kumar, Pawan Kumar Khowal, PL/SQL Challenges, Puzzle SQL, puzzle sql developer, Puzzle SQl Server, Puzzles, PUzzles in SQL SERVER, Queries for SQL Interview, Remove Huge Multiple Spaces from a DB Fields, Remove Multiple Spaces from a DB Fields, Separate Int and char from a string column, Single Quote update SQL, SQL, 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 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 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 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, 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 Server Interview Questions, T-SQL Tricky Puzzles, The Next Working Date Puzzle, The Status Puzzle, Top 10 Frequently Asked SQL Query Interview Questions, TOP 100 SQL SERVER INTERVIEW QUESTIONS QUERIES, Top 50 SQL Server Interview Question for Testers, Tough SQL Challenges, Tough SQL Puzzles, Tricky Questions, TSQL, TSQL Challenge, TSQL Challenges, TSQL Interview questions, TSQL Puzzle, TSQL Puzzles, TSQL Queries, update data that contain apostrophe, Update Data that with a string contains apostrophe, Update puzzle | Update Data that with a string contains apostrophe


SQL Puzzle | Failed thrice in last 3 Attempts Puzzle

In this puzzle we have to find people who failed the exam in last 3 attempts.Please check the sample input and expected output.

Sample Input

Dt Name Number Result
2017-12-14 13:33:09.460 Pawan 1504579 pass
2017-12-14 13:33:12.460 Pawan 1504579 pass
2017-12-14 13:34:15.463 Pawan 1504579 pass
2017-12-14 13:36:18.470 Ramesh 1504579 fail
2017-12-14 13:37:21.470 Ramesh 1504579 pass
2017-12-14 13:37:24.473 Ramesh 1504579 fail
2017-12-14 13:38:27.473 vaibhav 1504579 fail
2017-12-14 13:38:40.473 vaibhav 1504579 fail
2017-12-14 13:38:40.473 vaibhav 1504579 fail
2017-12-14 13:38:49.477 vaibhav 1504579 pass
2017-12-14 13:38:51.477 K 1504579 fail
2017-12-14 13:39:02.477 K 1504579 fail
2017-12-14 13:39:11.480 mayank 1504579 pass
2017-12-14 13:39:18.480 mayank 1504579 fail
2017-12-14 13:39:21.480 mayank 1504579 fail
2017-12-14 13:39:24.480 mayank 1504579 fail

Expected Output

Name Number FailCount Result
K 1504579 2 Pass
mayank 1504579 3 Fail
Pawan 1504579 0 Pass
Ramesh 1504579 2 Pass
vaibhav 1504579 2 Pass

Script

Use below script to create table and insert sample data into it.

--

CREATE TABLE testPassFail
(
  Dt DATETIME
 ,Name VARCHAR(20)
 ,Number BIGINT
 ,Result VARCHAR(4)
)
GO

INSERT INTO testPassFail VALUES (GETDATE(),'Pawan','1504579','pass');
WAITFOR DELAY '00:00:03';
INSERT INTO testPassFail VALUES (GETDATE(),'Pawan','1504579','pass');
WAITFOR DELAY '00:01:03';
INSERT INTO testPassFail VALUES (GETDATE(),'Pawan','1504579','pass');
WAITFOR DELAY '00:02:03';
INSERT INTO testPassFail VALUES (GETDATE(),'Ramesh','1504579','fail');
WAITFOR DELAY '00:01:03';
INSERT INTO testPassFail VALUES (GETDATE(),'Ramesh','1504579','pass');
WAITFOR DELAY '00:00:03';
INSERT INTO testPassFail VALUES (GETDATE(),'Ramesh','1504579','fail');
WAITFOR DELAY '00:01:03';
INSERT INTO testPassFail VALUES (GETDATE(),'vaibhav','1504579','fail');
WAITFOR DELAY '00:00:13';
INSERT INTO testPassFail VALUES (GETDATE(),'vaibhav','1504579','fail');
WAITFOR DELAY '00:00:00';
INSERT INTO testPassFail VALUES (GETDATE(),'vaibhav','1504579','fail');
WAITFOR DELAY '00:00:09';
INSERT INTO testPassFail VALUES (GETDATE(),'vaibhav','1504579','pass');
WAITFOR DELAY '00:00:02';
INSERT INTO testPassFail VALUES (GETDATE(),'K','1504579','fail');
WAITFOR DELAY '00:00:11';
INSERT INTO testPassFail VALUES (GETDATE(),'K','1504579','fail');
WAITFOR DELAY '00:00:09';
INSERT INTO testPassFail VALUES (GETDATE(),'mayank','1504579','pass');
WAITFOR DELAY '00:00:07';
INSERT INTO testPassFail VALUES (GETDATE(),'mayank','1504579','fail');
WAITFOR DELAY '00:00:03';
INSERT INTO testPassFail VALUES (GETDATE(),'mayank','1504579','fail');
WAITFOR DELAY '00:00:03';
INSERT INTO testPassFail VALUES (GETDATE(),'mayank','1504579','fail');
GO

SELECT * FROM testPassFail

--

Rules/Restrictions

The solution should be should use “SELECT” statement or “CTE”.

Add your solution(s) in the comments section or send you solution(s) to pawankkmr@gmail.com

Solution – 1 | Using Ranking Functions

--

SELECT k.Name,k.Number,SUM(CASE WHEN Result = 'Fail' THEN 1 ELSE 0 END) FailCount
,CASE WHEN SUM(CASE WHEN Result = 'Fail' THEN 1 ELSE 0 END) >= 3 THEN 'Fail' ELSE 'Pass' END Result 
FROM 
(
	SELECT * , row_number()  OVER (PARTITION BY Name ORDER BY Dt desc) rk FROM testPassFail			
)k WHERE rk <= 3
GROUP BY k.Name,k.Number
--

Output

--

/*------------------------
SELECT k.Name,k.Number,SUM(CASE WHEN Result = 'Fail' THEN 1 ELSE 0 END) FailCount
,CASE WHEN SUM(CASE WHEN Result = 'Fail' THEN 1 ELSE 0 END) >= 3 THEN 'Fail' ELSE 'Pass' END Result 
FROM 
(
	SELECT * , row_number()  OVER (PARTITION BY Name ORDER BY Dt desc) rk FROM testPassFail			
)k WHERE rk <= 3
GROUP BY k.Name,k.Number
------------------------*/
Name                 Number               FailCount   Result
-------------------- -------------------- ----------- ------
K                    1504579              2           Pass
mayank               1504579              3           Fail
Pawan                1504579              0           Pass
Ramesh               1504579              2           Pass
vaibhav              1504579              2           Pass

(5 row(s) affected)


                                            
--

Add a comment if you have any other solution in mind. I would love to learn it. We all need to learn.

Enjoy !!! Keep Learning

Pawan Khowal 

Http://MSBISkills.com

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SQL Puzzle | Fetch duplicate data ( The 5 Minutes Puzzle )

14 Thursday Dec 2017

Posted by Pawan Kumar Khowal in SQL Puzzles, SQL SERVER, SQL SERVER Puzzles, T SQL Puzzles, Tricky SQL Queries

≈ 1 Comment

Tags

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, 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, Free Download SQL SERVER Interview questions, Get Next Value Puzzle, Huge blank areas in database field, Improve SQL Skills, 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, Learn complex SQL, Learn SQL, Learn T-SQL, Microsoft SQL Server interview questions for DBA, MS SQL Server interview questions, MSBI Interview Questions, Objective Puzzle, Pawan, Pawan Khowal, Pawan Kumar, Pawan Kumar Khowal, PL/SQL Challenges, Puzzle SQL, puzzle sql developer, Puzzle SQl Server, Puzzles, PUzzles in SQL SERVER, Queries for SQL Interview, Remove Huge Multiple Spaces from a DB Fields, Remove Multiple Spaces from a DB Fields, Separate Int and char from a string column, Single Quote update SQL, SQL, 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 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 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 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, 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 Server Interview Questions, T-SQL Tricky Puzzles, The Next Working Date Puzzle, The Status Puzzle, Top 10 Frequently Asked SQL Query Interview Questions, TOP 100 SQL SERVER INTERVIEW QUESTIONS QUERIES, Top 50 SQL Server Interview Question for Testers, Tough SQL Challenges, Tough SQL Puzzles, Tricky Questions, TSQL, TSQL Challenge, TSQL Challenges, TSQL Interview questions, TSQL Puzzle, TSQL Puzzles, TSQL Queries, update data that contain apostrophe, Update Data that with a string contains apostrophe, Update puzzle | Update Data that with a string contains apostrophe


SQL Puzzle | Duplicate Data in 5 Minutes Puzzle

In this puzzle we have to find the duplicate data within 5 minutes of each other, the combination used for duplicate data is Individual ID and message text columns Please check the sample input and expected output.

Sample Input

SalesSiteID MessageID IndividualId MessageText DateAdded
103887 1 1 Pawan 2017-12-14 12:49:22.373
103887 2 1 Pawan 2017-12-14 12:49:24.373
103887 3 2 Sharlee 2017-12-14 12:49:34.377
103887 4 2 Sharlee 2017-12-14 12:50:36.377
103887 5 3 Ramesh 2017-12-14 12:50:39.380
103887 6 3 Ramesh 2017-12-14 12:50:39.380
103887 7 3 Ramesh 2017-12-14 12:51:19.380
103887 8 3 Ramesh 2017-12-14 13:01:21.380
103887 9 4 Avika 2017-12-14 13:03:23.383
103887 10 5 Panav 2017-12-14 13:03:23.387

Expected Output

MessageID MessageID IndividualID MessageText DateAdded DateAdded
1 2 1 Pawan 2017-12-14 12:49:22.373 2017-12-14 12:49:24.373
3 4 2 Sharlee 2017-12-14 12:49:34.377 2017-12-14 12:50:36.377
5 6 3 Ramesh 2017-12-14 12:50:39.380 2017-12-14 12:50:39.380
5 7 3 Ramesh 2017-12-14 12:50:39.380 2017-12-14 12:51:19.380
6 7 3 Ramesh 2017-12-14 12:50:39.380 2017-12-14 12:51:19.380

Script

Use below script to create table and insert sample data into it.

--

CREATE TABLE DuplicateFiveMinutes
(
	 SalesSiteID BIGINT
	,MessageID BIGINT
	,IndividualId BIGINT
	,MessageText VARCHAR(200)
	,DateAdded DATETIME
)
GO

INSERT INTO DuplicateFiveMinutes VALUES (103887, 1,1,'Pawan', GETDATE());

WAITFOR DELAY '00:00:02';

INSERT INTO DuplicateFiveMinutes VALUES (103887, 2,1,'Pawan', GETDATE());

WAITFOR DELAY '00:00:10';

INSERT INTO DuplicateFiveMinutes VALUES (103887, 3,2,'Sharlee', GETDATE());

WAITFOR DELAY '00:01:02';

INSERT INTO DuplicateFiveMinutes VALUES (103887, 4,2,'Sharlee', GETDATE());

WAITFOR DELAY '00:00:03';

INSERT INTO DuplicateFiveMinutes VALUES (103887, 5,3,'Ramesh', GETDATE());

INSERT INTO DuplicateFiveMinutes VALUES (103887, 6,3,'Ramesh', GETDATE());

WAITFOR DELAY '00:00:40';

INSERT INTO DuplicateFiveMinutes VALUES (103887, 7,3,'Ramesh', GETDATE());

WAITFOR DELAY '00:10:02';

INSERT INTO DuplicateFiveMinutes VALUES (103887, 8,3,'Ramesh', GETDATE());

WAITFOR DELAY '00:02:02';

INSERT INTO DuplicateFiveMinutes VALUES (103887, 9,4,'Avika', GETDATE());

INSERT INTO DuplicateFiveMinutes VALUES (103887, 10,5,'Panav', GETDATE());

WAITFOR DELAY '00:02:02';

--

Rules/Restrictions

The solution should be should use “SELECT” statement or “CTE”.

Add your solution(s) in the comments section or send you solution(s) to pawankkmr@gmail.com

Solution – 1 | Using JOINS

--

SELECT m1.MessageID,
       m2.MessageID,
       m2.IndividualID ,
       m2.MessageText ,
       m1.DateAdded ,
       m2.DateAdded
FROM   DuplicateFiveMinutes m1
       INNER JOIN DuplicateFiveMinutes m2 ON m2.IndividualID = m1.IndividualID AND m2.MessageText = m1.MessageText
WHERE  m1.SalesSiteID = 103887
       AND m2.MessageID > m1.MessageID
       AND DATEDIFF(mi,m1.DateAdded,m2.DateAdded) <= 5  /* The time difference should be 5 mins*/

--

Output

--

/*------------------------
SELECT m1.MessageID,
       m2.MessageID,
       m2.IndividualID ,
       m2.MessageText ,
       m1.DateAdded ,
       m2.DateAdded
FROM   DuplicateFiveMinutes m1
       INNER JOIN DuplicateFiveMinutes m2 ON m2.IndividualID = m1.IndividualID AND m2.MessageText = m1.MessageText
WHERE  m1.SalesSiteID = 103887
       AND m2.MessageID > m1.MessageID
       AND DATEDIFF(mi,m1.DateAdded,m2.DateAdded) <= 5  /* The time difference should be 5 mins*/
------------------------*/
MessageID            MessageID            IndividualID         MessageText           DateAdded               DateAdded
-------------------- -------------------- -------------------- --------------------- ----------------------- -----------------------
1                    2                    1                    Pawan                 2017-12-14 12:49:22.373 2017-12-14 12:49:24.373
3                    4                    2                    Sharlee               2017-12-14 12:49:34.377 2017-12-14 12:50:36.377
5                    6                    3                    Ramesh                2017-12-14 12:50:39.380 2017-12-14 12:50:39.380
5                    7                    3                    Ramesh                2017-12-14 12:50:39.380 2017-12-14 12:51:19.380
6                    7                    3                    Ramesh                2017-12-14 12:50:39.380 2017-12-14 12:51:19.380

(5 row(s) affected)


                                            
--

Add a comment if you have any other solution in mind. I would love to learn it. We all need to learn.

Enjoy !!! Keep Learning

Pawan Khowal 

Http://MSBISkills.com

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