Lead , Lag , First Value , Last Value , Keep First , Keep Last | Oracle SQL Tutorial | Mr.Murali

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Lead , Lag , First Value , Last Value , Keep First , Keep Last in Oracle SQL | Oracle SQL Tutorial | Mr.Murali
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Комментарии
Автор

Thank you. I understood KEEP function just because of this video

raghavendranramachari
Автор

Sir, firstly thank you so much for posting this video, its really helpful and I have learned a new function today..I have a clarification, insted of numaric values, for example if we are applying LEAD function on DATE column syntax explained above is not working... can you please help

prashanth
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very good sir, thank you so much ..you have explained very very good

dineshkhairnar
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good explanation Sir. thank you for sharing knowledge .

psjandyala
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We can easily say he's a telungu guy by his English pronunciations.

aruljebin
Автор

Sir, i want to see last three purchase rate
My table has item_name, vrno, vrdate, rate

gyananayak
Автор

I want to see employee name with minimum salary in the department whenever a new employee joins(i.e. order by joining date).
Upto minimum salary, its OK to get it with analytical function
SQL-
select e.first_name, e.last_name, e.hire_date, e.department_id, e.salary,
min(e.salary) over(partition by e.department_id order by e.hire_date) min
from HR.employees e order by 1, 2

But can i get the employee name without using self join

Example-
First_name, joiningDate, Department_id, min_sal, min_sal_employee
A, 1-March-2019, 1, 500, 500, A
B, 2-March-2019, 1, 400, 400, B
C, 3-March-2019, 1, 600, 400, B
C, 4-March-2019, 1, 1000, 400, B

patilvishwajit
Автор

using first_value we can get result... again why First???

besttube
Автор

Do you have a sql to compare records by a unique person

axelfoley
Автор

I had to learn two things at the same time. The tech stuff and your language. Please consider going back to English school for grammar and pronunciation.

TheHarishAgarwal