SQL Server find filename from directory column

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env:Windows Server 2016

       SQL Server 2016 SP2

Data column is stored inside the file name and path of the file name to how smoothly taken out?

1. Establish a table to store test data

command:

CREATE TABLE #DirTree
(
subdirectory NVARCHAR(200),
depth INT,
isfile BIT
)

 

2. Use xp_dirtree put to the test data table

command:

INSERT INTO #DirTree (subdirectory, depth, isfile)
EXECUTE master.sys.xp_dirtree ' F:\DBBackup\dbserver03\Fullbackup\',1,1

 

3. re-use test data to make a complete table of test data file containing the path name

command:

SELECT 'F:\DBBackup\dbserver03\Fullbackup\' + subdirectory AS FullDirectory
INTO #DirTreeFull
FROM #DirTree

 

4. Finally, the function CHARINDEX REVERSE and separating into a separate file name field

command:

SELECT *,
REVERSE(left(REVERSE(FullDirectory), CHARINDEX('\', REVERSE(FullDirectory)) - 1)) AS [FileName]
FROM #DirTreeFull

 

Item 5. The syntax below the split path

command:

SELECT *,
REVERSE(SUBSTRING(REVERSE(FullDirectory), CHARINDEX('\', REVERSE(FullDirectory)) + 1, LEN(FullDirectory))) AS [DirectoryName],
REVERSE(left(REVERSE(FullDirectory), CHARINDEX('\', REVERSE(FullDirectory)) - 1)) AS [FileName]
FROM #DirTreeFull