/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

11 votes180 views1 answer
Oracle insert from select
SQL
0 vote116 views1 answer
Error code 1451 sql
SQL
1 vote126 views2 answers
Sql now - 1 day
SQL
0 vote109 views1 answer
Create_engine sqlalchemy with parsed url sql server
SQL
0 vote64 views0 answer
SQL
4 votes127 views3 answers
NOT NULL SQL
SQL
0 vote109 views1 answer
Change role postgres
SQL
2 votes124 views3 answers
How do I add a user to a postgres database? cli
SQL
0 vote123 views1 answer
Delet all record statment sql
SQL
0 vote128 views1 answer
Sqlite unique multiple columns
SQL