I have an unnormalized table with a column containing a comma separated list that is a foreign key to another table:
+----------+-------------+ +--------------+-------+
| part_id | material | | material_id | name |
+----------+-------------+ +--------------+-------+
| 339 | 1.2mm;1.6mm | | 1 | 1.2mm |
| 970 | 1.6mm | | 2 | 1.6mm |
+----------+-------------+ +--------------+-------+
I want to read this data into a search engine that offers no procedural language.
So is there a way to either make a join on this column or run a query on this data that inserts appropriate entries into a new table? The resulting data should look like this:
+---------+-------------+
| part_id | material_id |
+---------+-------------+
| 339 | 1 |
| 339 | 2 |
| 970 | 2 |
+---------+-------------+
I could think of a solution if the DBMS supported functions returning a table but MySQL apparently doesn't.
The SplitString function 1. @Input – The string to be split. 2. @Character – The character that is used to separate the words or letters.
Split comma-separated value string in a column. SELECT ProductId, Name, value FROM Product CROSS APPLY STRING_SPLIT(Tags, ','); Here is the result set.
In MySQL this can be achieved as below
SELECT id, length FROM vehicles WHERE id IN ( 117, 148, 126)
+---------------+
| id | length |
+---------------+
| 117 | 25 |
| 126 | 8 |
| 148 | 10 |
+---------------+
SELECT id,vehicle_ids FROM load_plan_configs WHERE load_plan_configs.id =42
+---------------------+
| id | vehicle_ids |
+---------------------+
| 42 | 117, 148, 126 |
+---------------------+
Now to get the length of comma separated vehicle_ids use below query
Output
SELECT length
FROM vehicles, load_plan_configs
WHERE load_plan_configs.id = 42 AND FIND_IN_SET(
vehicles.id, load_plan_configs.vehicle_ids
)
+---------+
| length |
+---------+
| 25 |
| 8 |
| 10 |
+---------+
For more info visit http://amitbrothers.blogspot.in/2014/03/mysql-split-comma-separated-list-into.html
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