问题
I have 2 tables
Table name Dist.
NAME|Phone|ID
----------------
Oakley|555-555|1
Maui|666-666|2
lux|777-7777|3
Table name Patientacct.
Name|prescription|id|orderfrom
-------------------------------
bob|20-20|1|oakley
billy|15-20|2|Oakley, Maui
kim|20-20|3|Lux
I'm looking for a display like
Oakley -------------------- Bob Billy
Maui ------------------ Billy
Lux -------------- kim
Trials so far
SELECT *
FROM `dist`
JOIN `patientacct` ON patientacct.dist LIKE CONCAT('%', `dist`.name ,'%')
GROUP BY `dist`.name
This showed only 1 dist
If I drop the group by example:
SELECT *
FROM `dist`
JOIN `patientacct` ON patientacct.dist LIKE CONCAT('%', `dist`.name ,'%')
I get the record twice so what I need is somewhere between the two. I'm extremely new to joins so be easy when explaining.
回答1:
you must change your tables structure and you need to add a relation table with this values:
orders:
dist_id, patientacct_id PRIMARY_KEY(dist_id, patientacct_id)
回答2:
First of all, please make the table structure relational. Have a primary auto_increment value in each table and use the primary key from the Dlist foreign key to Patientacct. This way, a simple join would fetch the record you have wanted.
Regarding the display, what do you mean you don't want record twice. Since you are using join, you will get two records for Oakley with the patient Bob and Billy. That's what you wanted and it would be like that by a simple join too in a relational table.
来源：https://stackoverflow.com/questions/11183658/trying-to-display-2-tables-data