is not a recognized built-in function name

Question

Created a function

CREATE FUNCTION Split_On_Upper_Case(@Temp VARCHAR(1000))
RETURNS VARCHAR(1000)
AS
BEGIN
DECLARE @KeepValues AS VARCHAR(50)
SET @KeepValues='%[^ ][A-Z]%'
WHILE PATINDEX(@KeepValues COLLATE Latin1_General_Bin,@Temp)>0
SET @Temp=STUFF(@Temp,PATINDEX(@KeepValues COLLATE Latin1_General_Bin,@Temp)+1,0,' ')
RETURN @Temp
END

When iam trying to exexute this SELECT Split_On_Upper_Case('SaiBharath') It gives an error "'Split_On_Upper_Case' is not a recognized built-in function name.".Can someone please explain this

Answer 1

Add [dbo] in prefix and then execute as same :

SELECT [dbo].[Split_On_Upper_Case] ('SaiBharath')

Answer 2

To execute function in sql, prefix dbo should be used.

SELECT [dbo].[Split_On_Upper_Case] ('SaiBharath')

Answer 3

Just to make sure, set the database you created your function on first by using the use clause and then prefix the call of your function with dbo.

USE <DatabaseName>

SELECT dbo.Split_On_Upper_Case('camelCase')

Also, a good practice is prefixing each function or database object for that matter, with its schema name.