How to split a delimited string to multiple rows using MSSQL

To split a delimited string to multiple rows using MSSQL you can use the snippet below.

Sample MSSQL

CREATE FUNCTION dbo.StringSplit
(
    @Input       NVARCHAR(MAX),
    @Delimiter  NVARCHAR(255)
)
RETURNS TABLE
AS
    RETURN (
		SELECT Number = ROW_NUMBER() OVER (ORDER BY Number),
        Item FROM (
					SELECT Number, Item = LTRIM(RTRIM(SUBSTRING(@Input, Number, CHARINDEX(@Delimiter, @Input + @Delimiter, Number) - Number)))
					FROM (SELECT ROW_NUMBER() OVER (ORDER BY ao.[object_id])
					FROM sys.all_objects AS ao CROSS APPLY sys.all_objects) AS n(Number)
					WHERE Number <= CONVERT(INT, LEN(@Input))
					AND SUBSTRING(@Delimiter + @Input, Number, 1) = @Delimiter
				  ) AS item);
GO

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How to use select statement in a delete statement using MSSQL

To use select statement in a delete statement using MSSQL you can use the snippet below.

Sample MSSQL

DELETE TableOne
FROM   TableOne
       INNER JOIN TableTwo
               ON TableTwo.Id= TableOne.Id
                  AND ...
                       WHERE ...

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