Convert into csv from SQL column

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I have a table [Charts] contains value in column [name] like FLOWERS, ANIMALS,GAMES and their name table looking like this
<pre>Id					Name			ParentId
1					FLOWERS			0
2					rose			1
3					lily			1
4					lotus			1
5					ANIMALS			0
6					dog				5
7					cat				5
8					rat				5
9					monkey			5
10					GAMES			0
11					cricket			10
12					football		10
13					basketball		10
14					badminton		10

I need output like this

Name		Id
Flowers		2,3,4
Animals		6,7,8,9
Games		11,12,13,14

What I have tried:

Do i have to create any sql function

Posted 17-Jul-19 21:16pm

arvindcis

Updated 18-Jul-19 5:34am

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2 solutions

Solution 1

Write a SQL stored procedure that returns all the rows from the table. Then write some code that iterates through the rows. Whenever it encounters a row with a ParentId of 0 it outputs the ID of the following rows until it next encounters a row with a ParentId of 0. And so on. I've done something almost identical to this when building a menu tree structure from our menu table.

Posted 17-Jul-19 21:28pm

Dominic Burford

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MadMyche · Accepted Answer · 2019-07-18T05:34:00

What you want to do is read up on Concatenation
Concatenating Row Values in Transact-SQL - Simple Talk[^]

This example is similar to the XML tricks, sorry I didn't play too much with it to work out the INT vs VARCHAR

SQL

declare @table table (
  ID  varchar(16)
, ParentID  varchar(16)
, [Name] varchar(16)
)

insert @table
values (1, 0, 'FLOWERS'), (2, 1, 'rose'), (3, 1, 'lily')
, (4, 1, 'lotus'), (5, 0, 'ANIMALS'), (6, 5, 'dog'), (7, 5, 'cat')
, (8, 5, 'rat'), (9, 5, 'monkey'), (10, 0, 'GAMES'), (11, 10, 'cricket')
, (12, 10, 'football'), (13, 10, 'basketball'), (14, 10, 'badminton')

SELECT p.[Name]
,      Children = SUBSTRING( (
         SELECT ','+c.ID  AS [text()]
         FROM @table c
         WHERE c.ParentID = p.ID
         ORDER BY c.ID
         FOR XML PATH ('')
        ), 2, 1000)
FROM     @table p
WHERE    p.ParentID = 0
order by p.ID

But it does give the results you want

Name      Children
--------  ---------
FLOWERS   2,3,4
GAMES     11,12,13,14
ANIMALS   6,7,8,9