SQL Server Row_Number Join

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Sql server row_number join tutorial

The query is covered by the SQL Server ROW_NUMBER JOIN command in this blog post. To assist you in better understanding the topic, we will debate and conclude several situations. The whole list of topics we’ll cover is given below.

  • How to use SQL Server ROW_NUMBER function with the JOIN condition?
  • How to use SQL Server INNER JOIN condition with the ROW_NUMBER function?
  • How is SQL Server JOIN condition based on the ROW_NUMBER function?
  • How to use the SQL Server WHERE condition with the ROW_NUMBER function?
  • What is SQL Server ROW_NUMBER function and explain it with an example in the query?
  • How to add the SQL Server ROW_NUMBER function without the ORDER BY clause?

SQL Server Row_Number Join

In this MariaDB subtopic section, we will learn and understand how to use the ROW_NUMBER function with JOIN on the two tables in the query, which will be explained with the help of a sample example.

The SQL Server JOIN statement is used to retrieve data from more than two tables by the query for the result set. We can also use the SQL Server SELECT statement with the JOIN condition. In general, the FOREIGN KEY constraints are used to get relations on the table for each other.

In a JOIN query, a condition shows how the tables are related to each other.

  • We will choose the column from both tables that should be joined. A JOIN condition reveals a foreign key constraint from one table and is connected to another table.
  • Choose the appropriate logical operator to compare the values in the columns, such as =,< or >.

In the SQL Server, there are four types of joins:

  • INNER JOIN
  • SELF JOIN
  • OUTER JOIN
    • LEFT OUTER JOIN
    • RIGHT OUTER JOIN
    • FULL OUTER JOIN
  • CROSS JOIN
Sql server row_number join tutorial
Types of SQL Server JOIN

EXAMPLE:

USE SQLSERVERGUIDES;

SELECT ROW_NUMBER() OVER(ORDER BY USA_STATES.STATE_NAME DESC) AS ROWS_NUMBER,
USA_STATES.FULL_NAME,
CANADA_STATES.FULL_NAME AS PERSON_NAME,CANADA_STATES.CANADA_STATENAME
FROM USA_STATES
INNER JOIN CANADA_STATES
ON USA_STATES.STATE_ID=CANADA_STATES.STATE_ID
WHERE USA_STATES.STATE_ID>=25;

In the second query, the SELECT statement retrieves all records of the FULL_NAME, and CANADA_STATENAME columns from both tables i.e; USA_STATES and CANADA_STATES. Then we also used the ROW_NUMBER function with the OVER function which will help to arrange the records of the STATE_NAME column in descending order with the ORDER BY clause.

To shorter the function_name, we have used the ALIAS clause to shorter the function or column_name and given the name as ROWS_NUMBER and PERSON_NAME for the output column_name in the result set.

Based on the ON condition, the common column as the STATE_ID column is joined to each other with the help of the EQUAL TO operator for both tables. In the WHERE condition, the STATE_ID column of the USA_STATES table is used with the GREATER THAN or EQUAL TO operator to find a value greater than or equal to 25.

But if the WHERE condition turns out to be TRUE then the SELECT statement will retrieve all records from the USA_STATES and CANADA_STATES tables otherwise vice-versa.

Sql server row_number join example
Example of SQL Server ROW_NUMBER function with the JOIN condition

We hope that you have understood the subtopic “SQL Server Row_Number Join” by using the SQL Server ROW_NUMBER function with the JOIN condition on the table by the query. For a better understanding, we have used a sample example and explained it in depth.

Read: If Else In Trigger SQL Server

SQL Server Inner Join Row_Number

In this SQL Server section, we will learn and understand how to use the ROW_NUMBER function with the INNER JOIN condition on the table by the query, which will be explained with the help of an example.

EXAMPLE:

USE SQLSERVERGUIDES;

SELECT ROW_NUMBER() OVER (ORDER BY HARVARD_UNIVERSITY.STUDENT_LASTNAME ASC),
HARVARD_UNIVERSITY.STUDENT_FIRSTNAME,MIT_UNIVERSITY.STUDENT_FIRSTNAME,
MIT_UNIVERSITY.STUDENT_LASTNAME FROM HARVARD_UNIVERSITY
INNER JOIN MIT_UNIVERSITY
ON HARVARD_UNIVERSITY.STUDENT_ID=MIT_UNIVERSITY.STUDENT_ID
WHERE MIT_UNIVERSITY.STUDENT_ID>=10;

Here is the example query explanation:

  • In the SELECT statement, it is used with the ROW_NUMBER function with the OVER keyword to arrange the records of the STUDENT_LASTNAME column in descending order by using the ORDER BY clause.
  • And it also retrieves all records of the STUDENT_FIRSTNAME and the STUDENT_LASTNAME columns from the HARVARD_UNIVERSITY and MIT_UNIVERSITY tables.
  • Based on the INNER JOIN condition, the HARVARD_UNIVERSITY and MIT_UNIVERSITY table make an interconnection with the ON condition for the result set.
  • In the ON condition, the STUDENT_ID column of both tables makes a connection with the help of the EQUAL TO operator.
  • Finally, in the WHERE condition, the STUDENT_ID column is used with the EQUAL TO operator to find a value equal to 10 from the MIT_UNIVERSITY table.
    • If the WHERE condition turns out to be TRUE then the SELECT statement will bring all records from the HARVARD_UNIVERSITY and MIT_UNIVERSITY tables.
    • But if the SELECT statement retrieves an empty record set from both tables only when the WHERE condition gets a FALSE value.
Sql Server inner join row_number example
Example of SQL Server INNER JOIN condition with the ROW_NUMBER function.

With the help of the SQL Server ROW_NUMBER function and the INNER JOIN condition on the tables by the query, we hope you have grasped the subtopic “SQL Server Inner Join Row Number.” We’ve used a sample example and gone into great detail to explain it for clarity.

Read: Recursive Trigger in SQL Server

SQL Server Join Based On Row_Number

In this MariaDB subtopic tutorial, we will learn and understand how to use JOIN condition with the ROW_NUMBER function on the table by the following query:

EXAMPLE:

USE SQLSERVERGUIDES;

SELECT HARVARD_UNIVERSITY.STUDENT_FIRSTNAME,MIT_UNIVERSITY.STUDENT_FIRSTNAME,
MIT_UNIVERSITY.STUDENT_LASTNAME FROM HARVARD_UNIVERSITY
LEFT JOIN MIT_UNIVERSITY
ON HARVARD_UNIVERSITY.STUDENT_ID=MIT_UNIVERSITY.STUDENT_ID
WHERE MIT_UNIVERSITY.STUDENT_ID>=10 
ORDER BY ROW_NUMBER() OVER (ORDER BY HARVARD_UNIVERSITY.STUDENT_FIRSTNAME DESC);

In the aforementioned query, the SELECT statement is used to retrieve all records of the STUDENT_FIRSTNAME and STUDENT_LASTNAME columns from both tables i.e; HARVARD_UNIVERSITY and MIT_UNIVERSITY. Based on the LEFT JOIN condition, the common column of both tables is connected with the help of the EQUAL TO operator in the query.

Then in the WHERE condition, the STUDENT_ID column is used with the GREATER THAN or EQUAL TO operator to find a value greater than or equal to 10 from the MIT_UNIVERSITY table with the ORDER BY clause.

In the end, we have used the ORDER BY clause with the ROW_NUMBER function to arrange the records of the STUDENT_FIRSTNAME column in descending order and then rearrange it in ascending order by using the ASC keyword outside the parameter.

So, first, it is arranged in descending order by the ORDER BY clause and then given a synchronized number with the help of the ROW_NUMBER function after that it rearranges the records of the STUDENT_FIRSTNAME column in descending order by using the ORDER BY expression DESC keyword for the result set.

Sql server join based on row_number example
Example of SQL Server JOIN condition with the ROW_NUMBER function

We hope that you have understood the subtopic “SQL Server Join Based On Row_Number” by using the SQL Server JOIN condition with the ROW_NUMBER function on the tables by the query. For your better understanding, we have used a sample example and defined it in deepness.

Read: SQL Server Trigger On View

SQL Server Where Row_Number

We will learn and understand how to use the SQL Server ROW_NUMBER function with the WHERE condition on the table by the query, which will be explained with the help of a sample example.

EXAMPLE:

USE SQLSERVERGUIDES;

UPDATE USA_STATES
SET FULL_NAME='Ben Parker'
FROM 
( SELECT ROW_NUMBER() OVER (ORDER BY STATE_ID DESC) AS ROW_NUMBERS, * FROM USA_STATES) USA_STATES
WHERE USA_STATES.STATE_ID=30;

In the first query, the UPDATE statement is used to set the value of the FULL_NAME column as Ben Parker from the USA_STATES table. In the FROM keyword, the SELECT statement retrieves all records of the USA_STATES table and is also used with the ROW_NUMBER function.

In the ROW_NUMBER function, it is used with the OVER function to arrange the records of the STATE_ID column in descending order by using the ORDER BY clause from the USA_STATES table which is used with the WHERE condition.

In the WHERE condition, the STATE_ID column is used with the EQUAL TO operator to find a value equal to 30 from the USA_STATES table. If the WHERE condition turns out to be TRUE then the UPDATE statement will be updated in the records of the column in the table otherwise vice-versa.

Sql server where row_number example
Example of SQL Server Where Row_Number

We hope that you have understood the subtopic “SQL Server Where Row_Number” by using the SQL Server ROW_NUMBER function on the table by the query. For a better understanding, we have used a sample example and defined it in deepness.

Read: How to get inserted value in trigger SQL Server

SQL Server Row_Number Example

Here, we will learn and understand how to use the MariaDB ROW_NUMBER function on the table by the query, which is explained with the help of syntax and an illustrated example.

A window function called ROW NUMBER() gives each row in a result set’s division a sequential integer. For the first row in each partition, the row number starts at 1. Here is the syntax of the SQL Server ROW_NUMBER function by the following query:

SYNTAX:

SELECT ROW_NUMBER() OVER (
[ PARTITION BY  COLUMN_NAME,...  ] 
ORDER BY COLUMN_NAME [ DESC | ASC]

Here is the syntax explanation in detail:

  • PARTITION BY: The clause creates partitions from the result set (another term for groups of rows). The optional ROW NUMBER() function reinitializes the row number for each partition and applies it to each partition independently.
    • The ROW NUMBER() function will treat the entire result set as a single partition if it is skipped.
  • ORDER BY: The logical order of the rows within each partition of the result set is determined by the ORDER BY clause. The ROW NUMBER() method is order sensitive, hence the ORDER BY clause is required.

Here is a sample example of the SQL Server ROW_NUMBER() function on the table by the following query:

EXAMPLE:

USE SQLSERVERGUIDES;

SELECT ROW_NUMBER()
OVER( ORDER BY CANADA_STATENAME DESC) AS NUMBER_ARRAGE,
FULL_NAME,STATE_ZIPCODE
FROM CANADA_STATES
WHERE STATE_ID BETWEEN 50 AND 65;

In the aforementioned query, we have used the SELECT statement to retrieve all records of the FULL_NAME and STATE_ZIPCODE columns from the CANADA_STATES table. And we have also used the ROW_NUMBER function with the OVER function which will arrange the records of the CANADA_STATENAME column in descending order by using the ORDER BY clause in it.

This means that it will first arrange in descending order and then gives a number for every arrangement by the ROW_NUMBER function in the CANADA_STATES table.

To shorter the function_name, we have used the ALIAS clause with the AS keyword and given the function_name as NUMBER_ARRANGE for the output column name in the result set. In the WHERE condition, we have used the STATE_ID column is used with the BETWEEN keyword to find the values between 50 and 65 from the CANADA_STATES table.

If the WHERE condition turns out to be TRUE then the SELECT statement will retrieve all records from the CANADA_STATES table. But if the SELECT statement gets executed successfully and retrieved an empty record set from the CANADA_STATES table only when the WHERE condition turns out to be a FALSE value.

Sql server row_number example
Example of SQL Server ROW_NUMBER function

We hope that you have understood the subtopic “SQL Server Row_Number Example” by using the SQL Server ROW_NUMBER function on the table by the query. For a better understanding, we have used a sample example and explained it in depth.

Read: Trigger to insert data in another table in SQL Server

SQL Server Add Row_Number Without Order

In this MariaDB subtopic tutorial, we will learn and understand how to use the SQL Server ROW_NUMBER function without the ORDER BY clause in the table by the query. And which will be explained with the help of a sample example.

EXAMPLE:

USE SQLSERVERGUIDES;

SELECT STATE_ID, FULL_NAME, CANADA_STATENAME,
 ROW_NUMBER() OVER(ORDER BY (SELECT NULL)) AS rownum
FROM CANADA_STATES;

in the above query, the SELECT statement retrieves all records of the STATE_ID, FULL_NAME, and CANADA_STATENAME columns from the CANADA_STATES table. In the ROW_NUMBER function, the function is used with the OVER function but in the ORDER BY clause it will select a NULL value from the CANADA_STATES table.

In the end, we have used the ALIAS clause with the AS keyword and given the function_name as ROWNUM for the output column name in the result set.

Sql server row_number without order example
Example of SQL Serve ROW_NUMBER Without Order

We hope that you have understood the subtopic “SQL Server Add Row_Number Without Order” by using the SQL Server ROW_NUMBER function on the table by the query. For a better understanding, we have used a sample example and defined it in deepness.

You may also like to read the following SQL Server tutorials.

We now know how to use the SQL Server Row_Number Join statement after reading this lesson. We also discussed a few instances to help you comprehend the concept. Below is a list of all the topics we’ve covered.

  • How to use SQL Server ROW_NUMBER function with the JOIN condition?
  • How to use SQL Server INNER JOIN condition with the ROW_NUMBER function?
  • How is SQL Server JOIN condition based on the ROW_NUMBER function?
  • How to use the SQL Server WHERE condition with the ROW_NUMBER function?
  • What is SQL Server ROW_NUMBER function and explain it with an example in the query?
  • How to add SQL Server ROW_NUMBER function without the ORDER BY clause?