/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 votes122 views1 answer
Q operator in plsql
SQL
0 vote149 views1 answer
Select all same column value in sql
SQL
15 votes109 views4 answers
T-sql drop function if exists
SQL
0 vote131 views1 answer
Replace content value from old to new sql
SQL
1 vote119 views1 answer
Sql delete row with auto increment
SQL
0 vote127 views1 answer
List all indexes postgres
SQL
0 vote126 views2 answers
Uncaught Error: Cannot use object of type mysqli_result as array
SQL
32 votes143 views6 answers
Rename column mysql
SQL
1 vote122 views1 answer
User privileges postgresql information_schema
SQL
7 votes132 views1 answer
Sql server management studio turn on line numbers
SQL