/SQL/How to find all children of a record with only parent ID in sql

How to find all children of a record with only parent ID in sql

DECLARE @Table TABLE(
        ID INT,
        ParentID INT,
        NAME VARCHAR(20)
)

INSERT INTO @Table (ID,ParentID,[NAME]) SELECT 1, NULL, 'A'
INSERT INTO @Table (ID,ParentID,[NAME]) SELECT 2, 1, 'B-1'
INSERT INTO @Table (ID,ParentID,[NAME]) SELECT 3, 1, 'B-2'
INSERT INTO @Table (ID,ParentID,[NAME]) SELECT 4, 2, 'C-1'
INSERT INTO @Table (ID,ParentID,[NAME]) SELECT 5, 2, 'C-2'


DECLARE @ID INT

SELECT @ID = 2

;WITH ret AS(
        SELECT  *
        FROM    @Table
        WHERE   ID = @ID
        UNION ALL
        SELECT  t.*
        FROM    @Table t INNER JOIN
                ret r ON t.ParentID = r.ID
)

SELECT  *
FROM    ret

Source: stackoverflow.com

Similar codes

3 votes359 views1 answer
Select database in sql
SQL
0 vote389 views1 answer
Hex string sql becomes int64
SQL
0 vote351 views1 answer
Horizontal join sqlite
SQL
1 vote372 views1 answer
Psql connect
SQL
0 vote353 views1 answer
Restore backupfile discourse
SQL
1 vote358 views1 answer
Sql not equal multiple columns
SQL
0 vote328 views1 answer
Alter session set nls_language french
SQL
1 vote391 views1 answer
Isnull sql server
SQL
0 vote375 views1 answer
Sql change column in existing table
SQL
3 votes347 views4 answers
Mysql delete duplicate rows
SQL