How to Find and remove Numbers from string in a column using SQL Server

Ahmed S — Fri, 31 Mar 2023 04:18:53 +0000

In this Tutorial, We will learn How to Find and remove Numbers from string in a column using SQL Server. Remove numeric character from a string in SQL SERVER using the PATINDEX function along with the REPLACE function.

First we need to create Table

CREATE TABLE [dbo].[EmployeeV](
	ID int NOT NULL,
	[FirstName] Varchar(200) NOT NULL,
	[MiddleName] Varchar(200) NOT NULL,
	[LastName] Varchar(200) NOT NULL,	
	[JobTitle] Varchar(200) NOT NULL,
	[Department] Varchar(200) NOT NULL,	
	[Gender] [nchar](1) NULL
)

Then Insert data into EmployeeV Table

INSERT [dbo].[EmployeeV] ([ID], [FirstName], [MiddleName], [LastName], [JobTitle], [Department], [Gender]) VALUES (1, N'Ken12', N'J', N'Sánchez', N'Chief Executive Officer', N'Executive', N'M')
INSERT [dbo].[EmployeeV] ([ID], [FirstName], [MiddleName], [LastName], [JobTitle], [Department], [Gender]) VALUES (2, N'Te3r31ri', N'Lee', N'Duffy', N'Vice President of Engineering', N'Engineering', N'F')
INSERT [dbo].[EmployeeV] ([ID], [FirstName], [MiddleName], [LastName], [JobTitle], [Department], [Gender]) VALUES (3, N'Ro23be4447rto', NULL, N'Tamburello', N'Engineering Manager', N'Engineering', N'M')
INSERT [dbo].[EmployeeV] ([ID], [FirstName], [MiddleName], [LastName], [JobTitle], [Department], [Gender]) VALUES (4, N'Rob4', NULL, N'Walters', N'Senior Tool Designer', N'Tool Design', N'M')
INSERT [dbo].[EmployeeV] ([ID], [FirstName], [MiddleName], [LastName], [JobTitle], [Department], [Gender]) VALUES (5, N'Gail5', N'A', N'Erickson', N'Design Engineer', N'Engineering', N'M')
INSERT [dbo].[EmployeeV] ([ID], [FirstName], [MiddleName], [LastName], [JobTitle], [Department], [Gender]) VALUES (6, N'Jossef666', N'H', N'Goldberg', N'Design Engineer', N'Engineering', N'M')
INSERT [dbo].[EmployeeV] ([ID], [FirstName], [MiddleName], [LastName], [JobTitle], [Department], [Gender]) VALUES (7, N'45454Dylan', N'A', N'Miller', N'Research and Development Manager', N'Research and Development', N'M')
INSERT [dbo].[EmployeeV] ([ID], [FirstName], [MiddleName], [LastName], [JobTitle], [Department], [Gender]) VALUES (8, N'Diane55', N'L', N'Margheim', N'Research and Development Engineer', N'Research and Development', N'F')
INSERT [dbo].[EmployeeV] ([ID], [FirstName], [MiddleName], [LastName], [JobTitle], [Department], [Gender]) VALUES (9, N'Gigi554', N'N', N'Matthew', N'Research and Development Engineer', N'Research and Development', N'F')
INSERT [dbo].[EmployeeV] ([ID], [FirstName], [MiddleName], [LastName], [JobTitle], [Department], [Gender]) VALUES (10, N'Mi4chae43l', NULL, N'Raheem', N'Research and Development Manager', N'Research and Development', N'M')

Remove numeric character in a string

DECLARE @FirstName  varchar(100)
SET @FirstName = 'Wel123come234'
WHILE PATINDEX('%[0-9]%', @FirstName)>0
	SET @FirstName = REPLACE(@FirstName, SUBSTRING(@FirstName, PATINDEX('%[0-9]%', @FirstName),1),'')
SELECT @FirstName

Also Check Previous Article How to Count Male and Female Without Case Statement

PATINDEX Function- It finds any numeric characters in the string. It returns the starting position of the first occurrence of a pattern in a specified expression.
PATINDEX function return a value greater than o it means that a numeric character was found in the string.
REPLACE Function – It replace that character with an empty string.
SUBSTRING Function – It is used to extract the numeric character that was found using the stating position returned by PAINDEX.

Remove numeric character in a string using Function

CREATE Function RemoveNumericCharacterinstring(@inputstr VARCHAR(100))
Returns VARCHAR(max)
AS
BEGIN

 
WHILE PATINDEX('%[0-9]%', @inputstr)>0
	SET @inputstr = REPLACE(@inputstr, SUBSTRING(@inputstr, PATINDEX('%[0-9]%', @inputstr),1),'')

	return @inputstr;	

END

Test SQL Function

SELECT [dbo].[RemoveNumericCharacterinstring]('Welco234me')

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How to Find and remove Numbers from string in a column using SQL Server