Query with intermediate table in MySQL - php

Question

I'm trying to make a query with an intermediate table with very important data (field called "quantity") and I can't show all the data that I need
The tables are
TP_PANTONE_COLORS
id_pantone_color (primary key)
name_pantone_color
hex_pantone_color
TP_COLOR_CART
id_color_cart (primary key)
name_color_cart
description
link
TP_PANTONE_BASE (intermediate)
id_quantity (primary key)
id_pantone_color
id_color_cart
quantity
I need a table like this
NAME_PANTONE_COLOR | NAME_COLOR_CART | QUANTITY | LINK
I'm trying with
SELECT * FROM tp_color_cart A
INNER JOIN tp_pantone_base B ON
A.id_color_cart = B.id_color_cart
INNER JOIN tp_pantone_colors C ON
C.id_pantone_color = B.id_pantone_color
WHERE id_pantone_color=1
and
SELECT
A.name_pantone_color AS 'NAME_PANTONE_COLOR' ,
C.name_color_cart AS 'NAME_COLOR_CART',
B.quantity AS 'QUANTITY',
C.link AS 'LINK'
FROM tp_pantone_colors A
JOIN tp_pantone_base B ON B.id_pantone_color=A.id_pantone_color
INNER JOIN tp_color_cart C ON B.id_color_cart=C.id_color_cart
WHERE A.id_pantone_color=1
but this queries returns one row and TP_PANTONE_BASE have 4 rows with id_pantone_color=1

Answer 1

I cannot reproduce your problem. Given the appropriate data I would expect your query to return 4 rows even if there was only 1 record in TP_PANTONE_BASE and tp_color_cart
for example
drop table if exists tp_pantone_colors,TP_PANTONE_BASE,TP_COLOR_CART;
create table TP_PANTONE_COLORS(
id_pantone_color int,
name_pantone_color varchar(1),
hex_pantone_color int
);
insert into TP_PANTONE_COLORS values
(1,'a',1),(1,'a',1),(1,'a',1),(1,'a',1);
create table TP_COLOR_CART(
id_color_cart int,
name_color_cart varchar(1),
description varchar(2),
link int
);
insert into tp_color_cart values
(1,'b','bb',1);
create table TP_PANTONE_BASE (
id_quantity int,
id_pantone_color int,
id_color_cart int,
quantity int
);
insert into TP_PANTONE_BASE values
(1,1,1,10);
select A.name_pantone_color AS 'NAME_PANTONE_COLOR' ,
C.name_color_cart AS 'NAME_COLOR_CART',
B.quantity AS 'QUANTITY',
C.link AS 'LINK'
from tp_pantone_colors a
join TP_PANTONE_BASE b on b.id_pantone_color = a.id_pantone_color
join TP_COLOR_CART c on c.id_color_cart = b.id_color_cart;
+--------------------+-----------------+----------+------+
| NAME_PANTONE_COLOR | NAME_COLOR_CART | QUANTITY | LINK |
+--------------------+-----------------+----------+------+
| a | b | 10 | 1 |
| a | b | 10 | 1 |
| a | b | 10 | 1 |
| a | b | 10 | 1 |
+--------------------+-----------------+----------+------+
4 rows in set (0.00 sec)
In other words we cannot solve this without sample data from you.
Based on your data
SELECT A.id_pantone_color,b.*
from tp_pantone_colors a
join TP_PANTONE_BASE b on b.id_pantone_color = a.id_pantone_color
WHERE A.id_pantone_color=1;
+------------------+-------------+------------------+---------------+----------+
| id_pantone_color | id_quantity | id_pantone_color | id_color_cart | quantity |
+------------------+-------------+------------------+---------------+----------+
| 1 | 1 | 1 | 30 | 13,693 |
| 1 | 2247 | 1 | 452 | 13,543 |
| 1 | 5616 | 1 | 453 | 2,55 |
| 1 | 7862 | 1 | 455 | 70,215 |
+------------------+-------------+------------------+---------------+----------+
4 rows in set (0.00 sec)
select * from TP_COLOR_CART where id_color_cart in(30,452,453,455)
+---------------+-----------------+-------------+---------+------+
| id_color_cart | name_color_cart | description | color | link |
+---------------+-----------------+-------------+---------+------+
| 30 | 001 | White | #FFFFFF | # |
+---------------+-----------------+-------------+---------+------+
1 row in set (0.00 sec)
If you want you could
select A.name_pantone_color AS 'NAME_PANTONE_COLOR' ,
C.name_color_cart AS 'NAME_COLOR_CART',
B.quantity AS 'QUANTITY',
C.link AS 'LINK'
from tp_pantone_colors a
join TP_PANTONE_BASE b on b.id_pantone_color = a.id_pantone_color
left join TP_COLOR_CART c on c.id_color_cart = b.id_color_cart
WHERE A.id_pantone_color=1;
+--------------------+-----------------+----------+------+
| NAME_PANTONE_COLOR | NAME_COLOR_CART | QUANTITY | LINK |
+--------------------+-----------------+----------+------+
| PANTONE 1605 C | 001 | 13,693 | # |
| PANTONE 1605 C | NULL | 13,543 | NULL |
| PANTONE 1605 C | NULL | 2,55 | NULL |
| PANTONE 1605 C | NULL | 70,215 | NULL |
+--------------------+-----------------+----------+------+
4 rows in set (0.02 sec)
But it's not your query that's wrong it's the data.