Tutorial Gateway

  • C
  • C#
  • Java
  • Python
  • SQL
  • MySQL
  • Js
  • BI Tools
    • Informatica
    • Talend
    • Tableau
    • Power BI
    • SSIS
    • SSRS
    • SSAS
    • MDX
    • R Tutorial
    • Alteryx
    • QlikView
  • More
    • C Programs
    • C++ Programs
    • Go Programs
    • Python Programs
    • Java Programs

SQL NCHAR Function

by suresh

The SQL NCHAR function is a SQL String Function used to return the Unicode character at the specified integer value, as defined in Unicode standards. The syntax of the SQL Server UNICODE Function is

SELECT NCHAR (Integer_Expression)
FROM [Source]

Integer_Expression: Please specify the valid numeric value. If the value is out of the range (something like 123456), then the function will return NULL as output.

SQL NCHAR Function Example 1

The SQL Server NCHAR Function is used to return the Unicode character of the given expression or integer value. The following query may show you multiple ways to use this function.

DECLARE @Str1 NCHAR(25)
DECLARE @Str2 NCHAR(5)

-- Initialize the variables.  
SET @Str1 = 'è'
SET @Str2 = 'ë'

SELECT UNICODE(@Str1) AS Result1,
       NCHAR(UNICODE(@Str1)) AS Result2,
       UNICODE(@Str2) AS Result3,
      NCHAR(UNICODE(@Str2)) AS Result4; 

SELECT NCHAR(UNICODE('âëz')) AS Result5;  

SELECT NCHAR(UNICODE('Å28')) AS Result6;
SQL NCHAR Function 1

Below lines of code are used to declare two variables of type NCHAR. Next, we were assigning the string data è and ë

DECLARE @Str1 NCHAR(25)
DECLARE @Str2 NCHAR(5)

SET @Str1 = 'è'
SET @Str2 = 'ë'

From the below statement, you can see we are finding the UNICODE value of è, ë, and applying the SQL Server NCHAR function on that Unicode values. We also assigned new names to the result as ‘Result1’ to ‘Result4’ using ALIAS Column.

SELECT UNICODE(@Str1) AS Result1, 
       NCHAR(UNICODE(@Str1)) AS Result2, 
       UNICODE(@Str2) AS Result3, 
       NCHAR(UNICODE(@Str2)) AS Result4;

In the next line, We used the NCHAR function on a group of Ncharacters (word). Here, the UNICODE function will return the Unicode value of the leftmost character (i.e., â), and that should be 226. Next, NCHAR String Function will return the Character at 226, and that is â

SELECT NCHAR(UNICODE('âëz')) AS Result5;

SQL NCHAR Function Example 2

In this example, We are going to use the SQL NCHAR function inside the WHILE LOOP. I suggest you refer to the UNICODE, SUBSTRING, and WHILE LOOP articles in SQL Server.

DECLARE @i INT, 
        @string1 NCHAR(16)  

-- Initialize the variables.  
SET @i = 1
SET @string1 = 'TùtÓrïål GãtÊwáy'
 
WHILE @i <= LEN(@string1)
	BEGIN
		SELECT SUBSTRING(@string1, @i, 1) AS [NChar Value],
			   UNICODE(SUBSTRING(@string1, @i, 1)) AS [UNICODE Result],
			   NCHAR(UNICODE(SUBSTRING(@string1, @i, 1))) AS [NCHAR Result]
		SET @i = @i + 1
	END
SQL NCHAR Function 2

Placed Under: SQL

  • Install SQL Server
  • Install SQL Management Studio
  • Uninstall Management Studio
  • Install AdventureWorks Database
  • SQL Management Studio Intro
  • Connect SQL with sqlcmd utility
  • SQL Attach Database
  • SQL Detach Database
  • SQL Restore Database
  • Restore Database using BAK
  • SQL Rename Database with Files
  • Get SQL Database Names
  • SQL Create Table
  • SQL Rename Table
  • SQL Alter Table
  • SQL Add Column
  • SQL Rename Column
  • Get SQL Table Names in a DB
  • Find SQL Table Dependencies
  • Rename SQL Table & Column
  • SQL Global & Local Temp Table
  • SQL Table Variable
  • SQL Derived Table
  • SQL DATALENGTH
  • SQL Data Types
  • DML, DDL, DCL & TCL Cmds
  • SQL Query Builder
  • SQL ALIAS
  • SQL SELECT Statement
  • SQL SELECT DISTINCT
  • SQL SELECT INTO Statement
  • SQL INSERT Statement
  • SQL INSERT INTO SELECT
  • SQL BULK INSERT or BCP
  • SQL UPDATE Statement
  • SQL UPDATE from SELECT
  • SQL DELETE Statement
  • SQL TRUNCATE Table
  • SQL CASE Statement
  • SQL MERGE Statement
  • SQL Subquery
  • SQL CTE
  • SQL PIVOT
  • SQL UNPIVOT
  • SQL Clauses Examples
  • SQL TOP Clause
  • SQL WHERE Clause
  • SQL ORDER BY Clause
  • SQL GROUP BY Clause
  • SQL HAVING Clause
  • SQL Primary Key
  • SQL Foreign Key
  • SQL Referential Integrity
  • SQL Check Constraint
  • SQL Unique Constraint
  • SQL Default Constraint
  • SQL Clustered Index
  • SQL Non Clustered Index
  • SQL Filtered Indexes
  • SQL COALESCE Function
  • SQL IS NOT NULL
  • SQL IS NULL Function
  • SQL ISNULL
  • SQL JOINS
  • SQL CROSS JOIN
  • SQL FULL JOIN
  • SQL SELF JOIN
  • SQL Outer Joins
  • SQL Cross Join Vs Inner Join
  • SQL LEFT JOIN
  • SQL RIGHT JOIN
  • SQL AND & OR Operators
  • SQL Arithmetic Operators
  • SQL BETWEEN Operator
  • SQL Comparison Operators
  • SQL LIKE
  • SQL EXCEPT
  • SQL EXISTS Operator
  • SQL NOT EXISTS Operator
  • SQL INTERSECT
  • SQL IN Operator
  • SQL NOT IN Operator
  • SQL UNION
  • SQL UNION ALL
  • SQL IF ELSE
  • SQL ELSE IF
  • SQL WHILE LOOP
  • SQL Nested While Loop
  • SQL BREAK Statement
  • SQL CONTINUE Statement
  • SQL GOTO Statement
  • SQL IIF Function
  • SQL CHOOSE Function
  • SQL Change Data Capture
  • SQL Table Partitioning
  • SQL Table Partition using SSMS
  • SQL TRY CATCH
  • SQL VIEWS
  • SQL User Defined Functions
  • SQL Alter User Defined Functions
  • SQL Stored Procedure Intro
  • Useful System Stored Procedures
  • SQL SELECT Stored Procedure
  • SQL INSERT Stored Procedure
  • SQL UPDATE Stored Procedure
  • Stored Procedure Return Values
  • Stored Procedure Output Params
  • Stored Procedure Input Params
  • Insert SP result into Temp Table
  • SQL Triggers Introduction
  • SQL AFTER INSERT Triggers
  • SQL AFTER UPDATE Triggers
  • SQL AFTER DELETE Triggers
  • SQL INSTEAD OF INSERT
  • SQL INSTEAD OF UPDATE
  • SQL INSTEAD OF DELETE
  • SQL STATIC CURSOR
  • SQL DYNAMIC CURSOR
  • SQL FORWARD_ONLY Cursor
  • SQL FAST_FORWARD CURSOR
  • SQL KEYSET CURSOR
  • SQL TRANSACTIONS
  • SQL Nested Transactions
  • SQL ACID Properties
  • Create SQL Windows Login
  • Create SQL Server Login
  • SQL Server Login Error
  • Create SQL Server Roles
  • SQL Maintenance Plan
  • Backup SQL Database
  • SQL Ranking Functions Intro
  • SQL RANK Function
  • SQL PERCENT_RANK Function
  • SQL DENSE_RANK Function
  • SQL NTILE Function
  • SQL ROW_NUMBER
  • SQL Aggregate Functions
  • SQL Date Functions
  • SQL Mathematical Functions
  • SQL String Functions
  • SQL CAST Function
  • SQL TRY CAST
  • SQL CONVERT
  • SQL TRY CONVERT
  • SQL PARSE Function
  • SQL TRY_PARSE Function
  • SQL Calculate Running Total
  • SQL Find Nth Highest Salary
  • SQL Reverse String
  • SQL FOR XML PATH
  • SQL FOR XML AUTO
  • SQL FOR XML RAW

Copyright © 2021 · All Rights Reserved by Suresh

About Us | Contact Us | Privacy Policy