/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

2 votes156 views1 answer
Mysql Incorrect column specifier for column
SQL
1 vote149 views1 answer
Psql datetime grather than
SQL
3 votes99 views2 answers
Mysql sum with condition
SQL
0 vote148 views1 answer
Sql server udf performance
SQL
1 vote153 views2 answers
Postgresql get difference in hours between two dates
SQL
11 votes177 views2 answers
Docker create postgres db
SQL
0 vote119 views1 answer
Sqlalchemy existing database
SQL
0 vote153 views1 answer
Kill thread
SQL
0 vote148 views1 answer
Convert rows to columns in sql server
SQL
0 vote183 views1 answer
Mysql best varchar length size
SQL