/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

0 vote270 views1 answer
Mysql make date from 2 column
SQL
1 vote267 views2 answers
Postgres cast as decimal
SQL
1 vote268 views1 answer
Drop df constraint sql server
SQL
0 vote282 views1 answer
Sql server rtrim everything after character
SQL
18 votes266 views4 answers
Uninstall mysql on ubuntu
SQL
2 votes277 views2 answers
How to import large sql file in phpmyadmin in ubuntu
SQL
1 vote265 views1 answer
Postgres select as csv
SQL
0 vote272 views1 answer
Rename constraint postgresql
SQL
3 votes252 views1 answer
Oracle limit user tablespace
SQL
12 votes258 views1 answer
Docker mysql random root password
SQL