I have a problem with MySQL statement:
SELECT
oxarticles.OXTITLE AS TITLE,
oxmanufacturers.OXTITLE_1 AS OXMANTITLE,
oxarticles.OXDISTEAN AS OXDISTEAN,
oxarticles.OXMPN AS MPN,
oxarticles.OXPRICE AS OXPRICE,
oxarticles.OXSTOCK AS OXSTOCK,
oxarticles.OXARTNUM AS OXARTNUM,
oxseo.OXSEOURL AS OXSEOURL,
oxartextends.OXLONGDESC_1 AS OXLONGDESC
FROM `oxarticles`
INNER JOIN `oxartextends` ON oxarticles.OXID = oxartextends.OXID
INNER JOIN `oxmanufacturers` ON oxarticles.OXID = oxmanufacturers.OXID
INNER JOIN `oxseo` ON oxarticles.OXID = oxseo.OXOBJECTID;
My problem is that tables oxarticles and oxmanufacturers have two same column names OXID and OXTITLE_1 but the above code doesn't work. Please help.
You are trying to match article id to manufacturer id. That's wrong. You need to join your article table to the manufacturer table using the manufacturer id, not the article id.
In your case, that is oxarticles.OXMANUFACTURERID for the manufacturer id in the article table and oxmanufacturers.OXID in the manufacturer table.
SELECT
oxarticles.OXTITLE AS TITLE,
oxmanufacturers.OXTITLE_1 AS OXMANTITLE,
oxarticles.OXDISTEAN AS OXDISTEAN,
oxarticles.OXMPN AS MPN,
oxarticles.OXPRICE AS OXPRICE,
oxarticles.OXSTOCK AS OXSTOCK,
oxarticles.OXARTNUM AS OXARTNUM,
oxseo.OXSEOURL AS OXSEOURL,
oxartextends.OXLONGDESC_1 AS OXLONGDESC
FROM `oxarticles`
INNER JOIN `oxartextends`
ON oxarticles.OXID = oxartextends.OXID
INNER JOIN `oxmanufacturers`
ON oxarticles.OXMANUFACTURERID = oxmanufacturers.OXID
-- ^^^
-- Here's the manufacturer id
-- in the article table
INNER JOIN `oxseo`
ON oxarticles.OXID = oxseo.OXOBJECTID;
Related
I'm practicing with queries and I have a question about JOIN.
I have these 2 tables:
**PRODUCTS**:
id
name
description
**PRODUCT_IMAGES**
id
product_id
image_link
And I want to use JOIN to combine these 2 table where I only want to see the name of the product with the specific image that is linked with the id.
I try to to that with this QUERY:
SELECT * FROM `product_images`
LEFT JOIN `products`
ON `product_images`.`products.id` = `products`.`id`;
The problem now is that I get all the information, but I only want to see the name and the image.
You have an error with product_images.id as it should be like "product_images.product_id" , I fixed this, kindly use this query.
SELECT products.name, product_images.image_link FROM `product_images`
INNER JOIN `products`
ON `product_images`.`product_id` = `products`.`id`;
Change * to name, image_link:
SELECT name, image_link FROM `product_images`
LEFT JOIN `products`
ON `product_images`.`products.id` = `products`.`id`;
SELECT products.id,products.name FROM `product_images`
LEFT JOIN `products`
ON `product_images`.`products.id` = `products`.`id`;
Instead of * you can give the column names comma separated.
You may choose LEFT JOIN or INNER JOIN as per your need.
Select the desired columns in the select statement. It's a best practice to name the table and column together. Otherwise if a column exists with the same name in both tables it will throw an error.
SELECT `products`.`name`,`product_images`.`image_link`
FROM `product_images`
LEFT JOIN `products`
ON `product_images`.`products.id` = `products`.`id`;
Simple use inner join
SELECT
p.name,
i.image_link
FROM
products p
JOIN
product_images i USING(product_id)
If you are sure, you have data in both tables then use the below
SELECT P.name, PI.image_link FROM product_images PI
inner JOIN products P
ON P.id = PI.product_id
If you are sure you have data in product table but might be not in product_image then use below
SELECT P.name, PI.image_link FROM products P
left JOIN product_images PI
ON P.id = PI.product_id
I have 2 tables MOVIES and SHOWS.
MOVIES tables contains:
id, name, image, description.
SHOWS table contains:
id, movieid, description.
I'm executing mysql statement to retrieve records from SHOWS table, i'm getting all the records normally. Again I'm executing another mysql statement to get image from MOVIES table based on movies table id which i'm getting from first query.
Is there any simple way to retrieve all the records from SHOWS table along with movie image?
These are my queries:
$qry1 = mysql_query("SELECT * FROM shows WHERE id='1'");
$res = mysql_fetch_array($qry1);
$movieid = $res['movieid'];
$qry2 = mysql_query("SELECT image FROM movies WHERE id='$movieid'");
SELECT t1.id, t1.movieid, t1.description, t2.image FROM SHOWS as t1
INNER JOIN
MOVIES as t2 ON t1.id = t2.id
Some sql join docs
or you can try this, i was not sure witch id is from where:
SELECT id, movieid, description, image FROM SHOWS
INNER JOIN MOVIES
ON id = movieid
Some foreign key docs
Here I am writing with out join you can all so use nested select queries
select movies.image from movies where movies.id in(Select shows.movieid form shows where shows.id= 1);
You can retrieve data from multiple tables from one server at the same time. There is a lot of ways to achieve this operation which is called join. One of the possibility would be the LEFT JOIN like this:
SELECT t1.field1, t1.field2,..., t2.field1, t2.field2, ..., t2.fieldn
FROM table1 AS t2
LEFT JOIN talble2 AS t2 ON t2.some_field = t1.anothed_filed
WHERE some_condition
In you case:
SELECT s.*, m.image
FROM SHOWS AS s
LEFT JOIN movies AS m ON s.movieid = m.id
WHERE some_condition
for more info see the documentation on https://dev.mysql.com/doc/refman/5.7/en/join.html
I'm new to this, so I know I'm missing something simple, but I can't figure it out. I'm trying to join 3 tables together and I've got it working with 2 joins, but when combined in the same query, there ends up being an error.
My 3 tables are:
TBL_Authors
Author_ID
Author_Name
TBL_Publishers
Publisher_ID
Publisher_Name
TBL_Books
Title
Author_ID
Publisher_ID
ISBN
Genre
Price
Cost
Rating
What I have that isn't working:
$query = 'SELECT * FROM TBL_PUBLISHERS
JOIN TBL_BOOKS ON TBL_PUBLISHERS.Publisher_ID = TBL_BOOKS.Publisher_ID
SELECT * FROM TBL_AUTHORS
JOIN TBL_BOOKS ON TBL_AUTHORS.Author_ID = TBL_BOOKS.Author_ID
ORDER BY TBL_BOOKS.Title ASC;';
This query assumes that each book was published.
SELECT
*
FROM
TBL_Books b
INNER JOIN TBL_Publishers p ON b.Publisher_ID = p.Publisher_ID
INNER JOIN TBL_Authors a ON b.Author_ID = a.Author_ID
ORDER BY
b.Title
Book will always have an Author, but not necessarily a Publisher, if it's not published. If you need to fetch all the books irrespective of whether published or not, you will have to change INNER join on TBL_Publishers to LEFT.
This Query Will show you the result of all details of book, publisher name, author name.
SELECT
t1.* , t2.Publisher_Name , t3.Author_Name
FROM
TBL_Books as t1
INNER JOIN TBL_Publishers as t2 ON t1.Publisher_ID = t2.Publisher_ID
INNER JOIN TBL_Authors as t3 ON t1.Author_ID = t2.Author_ID
ORDER BY
t1.Title
Check This and update if this query helps you.
I have little problem with SQL query in PHP.
I want to get from table post rows with category ex. 'art'.
This table don't contain name of my category (only category_id).
So, how to connect this in my query?
Tables:
post:
id, title, category_id
category:
id, name
I tried this way, but it not works.
SELECT * FROM post WHERE category_id = category.id AND category.name="art";
Anyone can help me? Thanks.
You need to join the tables.
Given your schema, this should give you an starting point:
SELECT p.* FROM post p INNER JOIN category c ON p.category_id = c.id WHERE c.name = 'art';
You are missing the JOIN
SELECT * FROM post
INNER JOIN category
WHERE category_id = category.id AND category.name="art";
You need to use join to query on name column of category table, e.g.:
SELECT p.*
FROM post p JOIN category c ON p.category_id = c.id
WHERE c.name = 'art';
I have 2 tables:
Table A is a category table. Columns are cid, catname.
Table B is a relationship table. Columns are cid, parent (parent is another cid).
Here's where I am so far:
"SELECT c.cid, c.catname AS catname, r.parent AS parent FROM tableA AS c JOIN tableB AS r ON r.cid=c.cid";
I know I'll get 3 columns (2 from tableA and one from tableB) but I also want to get the catname value from the parent in tableA If I were to do a second query, it would look like this (assuming we put the result into a $row variable):
"SELECT catname FROM tableA WHERE cid='".$row['parent']."'";
That way I can display it as text.
What do I add, and where? Is there a second JOIN?
You can join a table multiple times:
SELECT a.cid AS acid, a.catname AS aname,
b.cid AS bcid, b.catname AS bname
FROM relationships AS r
JOIN categories AS a ON (r.cid = a.cid)
JOIN categories AS b ON (r.parent = b.cid)