Transfer comma separated values in one column to different rows in MySQL - mysql

Question

I asked a similar question in "Database Administrator" but sadly no one answered the question so I decided to transfer the data.
I have a table like this:
------------------------------------------------------
Parts | Owner | Number | Item_ID | ...
------------------------------------------------------
PartB | Adam | 4 | Item_a,Item_b,Item_z,...
ConD | Steve | 2 | Item_b,Item_c,Item_g,...
I wanted to have each value as a separate row:
------------------------------------------------------
Parts | Owner | Number | Item_ID | ...
------------------------------------------------------
PartB | Adam | 4 | Item_a
PartB | Adam | 4 | Item_b
PartB | Adam | 4 | Item_z
ConD | Steve | 2 | Item_b
ConD | Steve | 2 | Item_c
ConD | Steve | 2 | Item_g
Based on this answer , I tried :
SELECT Parts,
Owner,
Split.a.value('.', 'VARCHAR(100)') Item_ID
FROM (SELECT Parts,
Owner,
Cast ('<M>' + Replace(Item_ID, ',', '</M><M>') + '</M>' AS XML) AS Data
FROM Table_1) AS A
CROSS APPLY Data.nodes ('/M') AS Split(a)
But I get an error:
You have an error in your SQL syntax...near '('.', 'VARCHAR(100)')...

Answer 1

Can be done easly with a 3rd party language like C# since you only need to run it once.
And even easier with a light ORM like Dapper in this example:
[Table("TableA")]
class table {
[Key]
int id {get; set;}
string Parts {get; set;}
string Owner {get; set;}
int Number {get; set;}
string Item_ID {get; set;}
...
}
[Table("TableB")]
class newtable {
[Key]
int id {get; set;}
string Parts {get; set;}
string Owner {get; set;}
int Number {get; set;}
string Item_ID {get; set;}
...
}
Func<SqlConnection> conn = () => new SqlConnection("Data Source=127.0.0.1; Initial Catalog=;User Id=root;Password=***");
var newdata = new List<newtable>();
foreach (var d in conn().Query<table>("Select * FROM table"))
{
foreach (var cd in d.Item_ID.Split(','))
{
newdata.Add(new newtable() { Parts = d.Parts, Owner = d.Owner, Number = d.Number, Item_ID = cd.Trim(), ... });
}
}
//insert the new datas
foreach (var data in newdata) {
conn().Insert(data);
}