Hello. I need to write a UDF that would split a comma separated list and return 4 values. I need to return the first 4 values and ignore the commas after that. If there are no commas in the string that's passed then just return the table with empty strings. The UDF should accept 2 inputs. The ntext and a position and return a value based on the position.
For example:
1,2,3,text
should create
Position | Value
-------------------------
1|1
2|2
3|3
4|text
and return a value based on the position.
If there are more than 3 commas for example
1,2,3,This string, though short, contains a comma
should create
Position | Value
-------------------------
1|1
2|2
3|3
4|This string, though short, contains a comma
and return a value based on the position.
And if there are are less than 3 commas in the string passed
For example: 1,2 or NULL or 2:3.5 or This is a string with no commas
should create
Position | Value
-------------------------
1| (empty string)
2| (empty string)
3| (empty string)
4| (empty string)
and return a value based on the position.
This is what I wrote so far.
CREATE function GetValueFromPosition (@Input nvarchar(4000), @position int)
Returns nvarchar(4000)
As
Begin
-- Declare the return Variable
Declare @ReturnValue nvarchar(4000)
Select @ReturnValue = LTRIM(RTRIM(member_id)) From dbo.SplitString(@Input, ',') Where position = @position
Return @ReturnValue
End
CREATE Function SplitString(@text varchar(8000), @delimiter varchar(1) = ',')
-- This function splits a string of CSV values and creates a table variable with the values.
-- Returns the table variable that it creates
RETURNS @Strings TABLE
(
position int IDENTITY PRIMARY KEY,
member_id varchar(8000)
)
AS
BEGIN
Declare @index int
Set @index = -1
WHILE (LEN(@text) > 0)
BEGIN
SET @index = CHARINDEX(@delimiter , @text)
IF (@index = 0) AND (LEN(@text) > 0)
BEGIN
INSERT INTO @Strings VALUES (@text)
BREAK
END
IF (@index > 1)
BEGIN
INSERT INTO @Strings VALUES (LEFT(@text, @index - 1))
SET @text = RIGHT(@text, (LEN(@text) - @index))
END
ELSE
SET @text = RIGHT(@text, (LEN(@text) - @index))
END
RETURN
END
I am trying to modify these according to what I need but its not working. Please help. Thank you.
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Column1Â Â Â Â Â Â Column2Â Â Â Â Â Column3 10Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 22Â Â Â Â Â Â Â Â Â Â Â Â Â microsoft 20Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 25Â Â Â Â Â Â Â Â Â Â Â Â Â sql 30Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 27Â Â Â Â Â Â Â Â Â Â Â Â Â server 40Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 29Â Â Â Â Â Â Â Â Â Â Â Â Â product
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