I am trying to compare two tables to find rows in each table that is not in the other. Table 1 has a groupby column to create 2 sets of data within table one.
groupby number
----------- -----------
1 1
1 2
2 1
2 2
2 4
Table 2 has only one column.
number
-----------
1
3
4
So Tabl...
Imagine the following model:
class Parent(Model):
...
class Child(Model)
father = ForeignKey(Parent)
...
Some parents have children, others do not (they're not parents in the real meaning, it's just a fictional name).
I would like to make the following query: I want to list all the Parents, and if they have children, bri...
Is this query equivalent to a LEFT OUTER join?
var rows = from a in query
join s in context.ViewSiteinAdvise on a.Id equals s.SiteInAdviseId
where a.Order == s.Order
select new
{....};
I tried this but it did not result
from s in ViewSiteinAdvise
join q in query on s.SiteInAdviseId equal...
Simplified table structure (the tables can't be merged at this time):
TableA:
dts_received (datetime)
dts_completed (datetime)
task_a (varchar)
TableB:
dts_started (datetime)
task_b (varchar)
What I would like to do is determine how long a task took to complete.
The join parameter would be something like
ON task_a = task_b AN...
I have 3 tables Table1 (with 1020690 records), Table2(with 289425 records), Table 3(with 83692 records).I have something like this
SELECT * FROM Table1 T1 /* OK fine select * is bad when not all columns are needed, this is just an example*/
LEFT JOIN Table2 T2 ON T1.id=T2.id
LEFT JOIN Table3 T3 ON T1.id=T3.id
and a query like this
S...
Hi,
I'm new to doctrine: I have a problem with the sorting of joined records.
A sample.
I've got an Article model which is associated with a Source model in 1 <-> n. The source model has a property called 'position' with an integer value.
Now I want to fetch an article with it's sources orderes by the position. My DQL looks like this...
Here is the code that I currently have:
SELECT `A`.*
FROM `A`
LEFT JOIN `B` ON `A`.`A_id` = `B`.`value_1`
WHERE `B`.`value_2` IS NULL
AND `B`.`userid` IS NULL
ORDER BY RAND() LIMIT 2
What it currently is supposed to do is select 2 rows from A when the 2 rows A_id being selected are not in value_1 or value_2 in B....
Hi
Well this will be hard to explain but ill do my best
The thing is i have 4 tables all with a specific column to relate to eachother.
1 table with users(agent_users) , 1 with working hours(agent_pers), 1 with sold items(agent_stat),1 with project(agent_pro)
the user and the project table is irrelevant in the issue at hand but to give ...
On the project I am working on, I am stuck with the table structure from Hades. Two things to keep in mind:
I can't change the table structure right now. I'm stuck with it for the time being.
The queries are dynamically generated and not hard coded. So, while I am asking for a query that can pull this data, what I am really working t...
Can any one tell me the LINQ 2 SQL version (in vb.net) of the below Left outer join query.I am trying to get all Employees with name "Shyju" and their address line 1 if it exist in the address table
SELECT E.EMPLOYEE_NAME,
E.AGE,A.ADRESS_LINE1
FROM EMPLOYEE_MASTER E
LEFT OUTER JOIN
ADDRESS_MASTE...
I'm trying to make sense of the right way to use JOIN, COUNT(*), and GROUP BY to do a pretty simple query. I've actually gotten it to work (see below) but from what I've read, I'm using an extra GROUP BY that I shouldn't be.
(Note: The problem below isn't my actual problem (which deals with more complicated tables), but I've tried to c...
I have two MySQL tables (product and price history) that I would like to join:
Product Table:
Id = int
Name = varchar
Manufacturer = varchar
UPC = varchar
Date_added = datetime
Price_h table:
Id = int
Product_id = int
Price = int
Date = datetime
I can perform a simple Left Join:
SELECT Product.UPC, Product.Name, Price_h.Price, Price_...
I have read plenty of blog posts and have yet to find a clear and simple example of how to perform a LEFT OUTER JOIN between two tables. The Wikipedia article on joins Join (SQL) provides this simple model:
CREATE TABLE `employee` (
`LastName` varchar(25),
`DepartmentID` int(4),
UNIQUE KEY `LastName` (`LastName`)
);
CREATE TABLE `depa...
I am a newbir to LINQ 2 SQL and needs help to create left join query.
I have the below LINQ 2 SQL query to get data from 2 tables.Now i want to LEFT join one more table to this .A column called "SerialId" is associated with SerialId column in "IV00200s " table
Dim items=(From i In oRecelDB.IV00200s From c In oRecelDB.MDS_CONTAINERs.Wh...
I have several tables I need to query in order to get all the rows for a certain user.
The tables basically look like this
contact
=======
id_contact PK
firstName
lastName
...
contact_phone
===============
id_contact_phone, PK
id_contact, FK
id_phone_type, FK
phone
...
phone_type
============
id_phone_type PK
phone_type
....
And the...
Hello,
I am currently running this SQL
SELECT jm_recipe.name, jm_recipe.slug
FROM jm_recipe
LEFT JOIN jm_category_recipe ON jm_category_recipe.recipe_id = jm_recipe.id
WHERE jm_category_recipe.category_id = $cat"
This returns the desired results except that I also need to return the name of the category that the recipe I am looking ...
(For a quick recap please see sections titled , DATA. Can only get results in FIGURE A, and FIGURE B, what I want is DESIRED RESULTS, tried everything posted in the answers section.)
All, I have been working hard to start smartly using joins in my application. Boy it took me a while but I think I am getting the hang of this, but I can't...
hi,
I'm not sure if this is an sql question or a combined sql/php question, so if i'm in the wrong question area, I apologize in advance.
I'm use to mssql and not sure how to exactly do this within mysql however...
i have a number of tables, all with left joins to create individual sql queries
query 1:
SELECT
a.itemID
, b.t...
Hi! I'm quite a beginner at this so please forgive me if this seems a bit easy for some of you.
So, I have this query here:
SELECT code.id AS codeid, code.title AS codetitle, code.summary AS codesummary, code.author AS codeauthor, code.rating AS rating, code.date,
code_tags.*,
tags.*,
...
I need to perform a left outer join between two tables using a primary key and an "in" clause.
Desired SQL
SELECT F.Id, B.Id
FROM Foo F
LEFT OUTER JOIN Bar B ON B.Id = F.Id and B.Name in ('Spam', 'Eggs')
LINQ Query
from f in dataContext.GetTable<Foo>
join b in dataContext.GetTable<Bar> on f.Id equals b.Id into b1
from b in b1.Defaul...