Row numbers with partitions

Uses a partition criteria to group the row numbering according to it.

SELECT
  ROW_NUMBER() OVER(PARTITION BY DepartmentId ORDER BY DepartmentId ASC) AS RowNumber,
  DepartmentId, Fname, LName
FROM Employees

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Row number:

*Row number

*Row numbers without partitions

*Row numbers with partitions

*Delete All But Last Record 1 to Many Table

Table Of Contents

0Getting started with SQL

1SELECT

2JOIN

3Example Databases and Tables

10INSERT

14Filter results using WHERE and HAVING

15Window Fnctions

16Common Table Expressions

17Views

18LIKE operator

19Functions Aggregate

20DELETE

26MERGE

28Finding Duplicates on a Column Subset with Detail

35Row number

38SQL Group by vs. Distinct

39Table Design

40CROSS APPLY and OUTER APPLY

41Synonyms

42CREATE database

43SKIP TAKE pagination

44EXPLAIN and DESCRIBE

47NULL

51DROP or DELETE database

52EXCEPT

53TRYCATCH

54XML

55GRANT and REVOKE

56Functions ScalarSingle Row