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Questions tagged [right-join]

The RIGHT JOIN keyword will return all the rows from the right table, even if there are no matches in the left table.

SQL RIGHT JOIN ON returns the rows of INNER JOIN ON plus unmatched right table rows extended by NULLs. A consequence is that it returns all the rows from the right table at least once even if there are no matches in the left table. See examples here.

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Explanation of code for right excluding join?

I just found a great page with Venn diagrams of different joins and the code for executing them: http://www.codeproject.com/Articles/33052/Visual-Representation-of-SQL-Joins I used the "Right Excluding Join" in my query, the Venn diagram looks like…
Sahand
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MySQL left join with multiple tables and where clauses

I have tried so many combinations so maybe I'm just simply doing it wrong. Well, I definitely am doing it wrong. I know that code is always requested on Stack Overflow but it'll confuse the question as my code has now mutated into another…
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simple update with right join using mysql

I have two tables that each include a identical value (in most cases) I am able to get the row ID from table 1, where table 1 value = table 2 value SELECT wp_posts.ID FROM `wp_posts` RIGHT OUTER JOIN `wp_wpfb_files` ON wp_posts.post_name =…
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how many types of joins are there in mysql or sql

I've heard there are 3 types of joins I'm not sure of the exact names. Googling has turned up a variety of terms like : Cross join , left join , right join , inner join , outer join, self join.... Could anyone tell me how many joins exist in…
PSR
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Replace a value in a data frame from other dataframe in r

Hi I have two dataframes, based on the id match, i wanted to replace table a's values with that of table b. sample dataset is here : a = tibble(id = c(1, 2,3), type = c("a", "x", "y")) b= tibble(id = c(1,3), type =c("d",…
Thaatha_Paati
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Yii2 ActiveQuery join keep returns unique record values

main table CREATE TABLE `orders` ( `id` int(11) NOT NULL AUTO_INCREMENT, `nama` varchar(255) NOT NULL, `lat` float(10,6) DEFAULT NULL, `lng` float(10,6) DEFAULT NULL, PRIMARY KEY (`id`) ) second table CREATE TABLE `order_seller_detail` ( …
baljit
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Will be this on condition in outer join faster than where clause?

Here is my table CREATE TABLE log_table ( `user_id` VARCHAR(5), `date_time` DATETIME, `event_name` VARCHAR(10), `trivial` int ); INSERT INTO log_table (`user_id`, `date_time`, `event_name`, `trivial`) VALUES ('001', '2020-12-10…
Lerner Zhang
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SQLite3 Simulate RIGHT OUTER JOIN with LEFT OUTER JOIN's without being able to change table order

I am new to SQL and have recently started implementing joins into my code, the data I wish to retrieve can be done with the following SQL statement. However, as you know SQLite3 does not support RIGHT OUTER and FULL OUTER JOINs. Therefore I would…
Origami
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How does Pandas Merge as of (pd.merge_asof) 'left_by' and right_by' work?

I have a dataframe with two columns in which one is 'date_time' value and other (position) is a float. I have to merge two dataframes such that difference between the date_time values of the two frames is less than 30 min and position difference is…
Fasty
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How to join two selects from the same table in mysql

Ï need to do a join of two selects of the same table (top and bottom rows), but the inner join returns an empty set. I do not understand how this is possible since I am doing the join on a new column which is the same for both tables. Here are the…
DwarfAmongGiants
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mysql right join 2 tables and select all in table1

I'm using two tables in the database and query The tables look like: Table student id | studentid | name | room ---------------------------------------- 1 | 28778 | a | 1 2 | 28779 | b | 2 3…
Vasavat B.
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Access Nested inner join in a right join

I am trying to nest an inner join in access inside a right join The first right join query is SELECT * FROM ProjectMilestone AS a RIGHT JOIN ProjectMilestone AS b ON a.PredecessorMilestone = b.ProjectMilestoneID Where when joined the first select…
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How to join two tables together to get the following result in mysql

I have two tables, table 1 has only 1 column like this: Identifier A B C D The second table has two columns like this: Identifier CCC A 10 C 20 I need to join these two tables together like…
user8787011
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RIGHT JOIN with composite primary key not retrieving all data

I have a MySQL db to store some equipment IP address, vendors and service status with the following structure (simplified for illustration): Table equipment (id, ipaddress) as primary key id ipaddress name 1234 10.20.30.40 NY…
gugabguerra
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convert SQL to LINQ not working

I want to convert this SQL code to LINQ. Here is my SQL code: SELECT Rooms.RoomName AS RoomNo, Beds.BedName AS Beds, Rooms.RoomType, ISNULL(CheckIn.CheckIntatus,'') AS Status FROM CheckIn INNER JOIN GuestBeds ON CheckIn.GuestBedId =…
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