I have this inner join query:
select *
from ioa_invoice_line
INNER JOIN ioa_invoice
ON ioa_invoice_line.invo_id = ioa_invoice.id ;
Now, I want to add this condition also in the above inner join that is
where ioa_invoice_line.invo_id =234
Please advise how to add this condition in above query.
As Felix says in his comment you can add it without problems:
select *
from ioa_invoice_line
INNER JOIN ioa_invoice
ON ioa_invoice_line.invo_id = ioa_invoice.id
AND ioa_invoice_line.invo_id = 234
As this is criteria on the first table, you would usually simply add this WHERE clause at the end of your query (before the semicolon of course).
However, you are dealing with an invoice table and its detail table here and the criteria is on the key linking the tables. So for readability, I would swap the tables and name the parent table first and join the child table. That feels more natural:
select *
from ioa_invoice i
join ioa_invoice_line il on il.invo_id = i.id
where i.id = 234;
select * from
ioa_invoice_line il
INNER JOIN ioa_invoice i
ON il.invo_id = i.id
where il.invo_id = 234
This format use as a professional practice
Related
I have two tables, "Booking" and "City". CityName field is primary key in City table and I have used it as foreign key for two columns "SourceCity" and "DestinationCity" in Booking table. I want to create a stored procedure to select all existing data from the Booking table for creating a view list, for which I have written the following.
SELECT [dbo].[Booking].[BookingID],
[dbo].[Booking].[CustomerName],
[dbo].[City].[CityName],
[dbo].[City].[CityName],
[dbo].[Booking].[StartingDate],
[dbo].[Booking].[EndingDate],
[dbo].[Car].[LicensePlateNumber],
[dbo].[Driver].[DriverName],
[dbo].[Booking].[AdvanceTaken],
[dbo].[Booking].[PendingPayment],
[dbo].[Booking].[TotalRent],
[dbo].[Booking].[BookingDate],
[dbo].[Booking].[IDProof]
FROM [dbo].[Booking]
**LEFT OUTER JOIN [dbo].[City]
ON [dbo].[Booking].[SourceCity] = [dbo].[City].[CityName]
AND [dbo].[Booking].[DestinationCity] = [dbo].[City].[CityName]**
LEFT OUTER JOIN [dbo].[Driver]
ON [dbo].[Driver].[DriverID] = [dbo].[Booking].[DriverAllotted]
LEFT OUTER JOIN [dbo].[Car]
ON [dbo].[Car].[CarID] = [dbo].[Booking].[CarAllotted]
ORDER BY [dbo].[Booking].[BookingID]
I am not sure if it is possible to do the following
LEFT OUTER JOIN [dbo].[City]
ON [dbo].[Booking].[SourceCity] = [dbo].[City].[CityName]
AND [dbo].[Booking].[DestinationCity] = [dbo].[City].[CityName]
I guess you need a different JOIN
FROM [dbo].[Booking] as booking
LEFT OUTER JOIN [dbo].[City] as source_city
ON booking.[SourceCity] = source_city.[CityName]
LEFT OUTER JOIN [dbo].[City] as destination_city
ON booking.[DestinationCity] = destination_city.[CityName]
....
Yes it is possible, you just need to use a different table alias. Beyond referencing the same table twice, table aliases can make your code look a lot cleaner, e.g.
SELECT b.CustomerName,
sc.CityName AS SourceCity,
dc.CityName AS DestinationCity,
b.StartingDate,
b.EndingDate,
c.LicensePlateNumber,
d.DriverName,
b.AdvanceTaken,
b.PendingPayment,
b.TotalRent,
b.BookingDate,
b.IDProof
FROM dbo.Booking AS b
LEFT OUTER JOIN dbo.City AS sc
ON sc.CityName= b.SourceCity
LEFT OUTER JOIN dbo.City AS dc -- Different Alias here
ON dc.CityName = b.DestinationCity
LEFT OUTER JOIN dbo.Driver AS d
ON d.DriverID = b.DriverAllotted
LEFT OUTER JOIN dbo.Car AS c
ON c.CarID = b.CarAllotted
ORDER BY
b.BookingID;
I appreciate that cleaner is somewhat subjective, but I would be astonished if anyone found this harder to read than your original query
I am trying to get all the values from the first left table but when I use two left joins its restricting the values from first table.
I used the below query
SELECT P.person_id, TS.Task_Id, TS.skill
FROM Person P
LEFT JOIN Person_Skill PS ON P.person_id = PS.person_id
LEFT JOIN Task_Skill TS ON PS.Skill = TS.Skill
WHERE ts.task_id = 245
I need all the person id from person table.
Just move the condition on the left joined table from the where clause to the on clause of the join:
select p.person_id, ts.task_id, ts.skill
from person p
left join person_skill ps
on p.person_id = ps.person_id
left join task_skill ts
on ps.skill = ts.skill
and ts.task_id = 245 --> here
Rationale: conditions in the where clause are mandatory. If there is no match in ts, then condition ts.task_id = 245 cannot be satisfied, since ts.task_id is null.
Use the filter condition in a sub query instead of using it as a global filter outside. This should give you the output that you desire.
SELECT P.person_id,TS.Task_Id,TS.skill FROM Person P
LEFT JOIN Person_Skill PS
ON P.person_id=PS.person_id
LEFT JOIN
(Select * from Task_Skill where task_id = 245) TS
ON PS.Skill=TS.Skill;
how to create view of this query anyone help me please, i want create view of this but its show me error
Msg 4506, Level 16, State 1, Procedure ordersview, Line 3 Column names
in each view or function must be unique. Column name 'ID' in view or
function 'ordersview' is specified more than once.
CREATE VIEW ordersview
AS
Select * from UserClaimData cd
Inner join UserClaimDeductions ud on
ud.CLAIMID = cd.ID
Inner join UserClaimApproval ua on
ua.CLAIMID = cd.ID
inner join ClaimDataBreakdown cb on
cb.CLAIMID = cd.ID
inner join AppExpenseTypes ae on
ae.ID = cb.EXPENSETYPE
inner join AppNOWTypes an on
ae.ID = an.EXPENSETYPEID
inner join AppAreas aa on
aa.ID = cb.AREAID
inner join AppZones az on
cb.ZONEID = az.ID
inner join AppRegions ar on
ar.ID = cb.REGIONID
The answer to the question you've asked is to specifically reference elements from each table; for example:
CREATE VIEW ordersview
AS
Select cd.ID AS ID1, ua.ID as ID2, etc... from UserClaimData cd
Inner join UserClaimDeductions ud on
ud.CLAIMID = cd.ID
Inner join UserClaimApproval ua on
ua.CLAIMID = cd.ID
inner join ClaimDataBreakdown cb on
cb.CLAIMID = cd.ID
inner join AppExpenseTypes ae on
ae.ID = cb.EXPENSETYPE
inner join AppNOWTypes an on
ae.ID = an.EXPENSETYPEID
inner join AppAreas aa on
aa.ID = cb.AREAID
inner join AppZones az on
cb.ZONEID = az.ID
inner join AppRegions ar on
ar.ID = cb.REGIONID
I would, however, suggest that you don't put such a complex join inside a view. Consider the columns you want, and perhaps think about a stored procedure, or a table value function.
What part of the error message do you not understand?
You have select *, which brings together all columns from all tables. Just based on the join conditions, it is clear that most tables have an ID column, so there are multiple columns called ID. CLAIMID also seems quite popular.
In general, using select * is discouraged. However, it should not be used for views. A view should state the columns that it contains:
select cd.Id, . . .
Your view has more than one column with the same name, and this is causing the error.
AppRegions has a column called ID
AppAreas has a column called ID
UserClaimData has a column called ID
Change the Select * to specify the columns of the tables you want to have on the View table, and put a particularry name, or just don't put them.
You need to change the name of some columns in the view. Use AppAreas.ID as aaID
A view is like a virtual table, So you can't have the same name for 2(or more) columns.
So to avoid this, in your select Query instead of * provide the column names, and if there are 2 columns with the same name and you need them both in the view, give them different alias names.
Suppose you have ColumnA in TableA and TableB and you want them both in the view. Create view like this
CREATE VIEW vm_Sample
SELECT
A.COLUMNA COLUMNA_1,
B.COLUMNA COLUMNA_2
FROM TABLEA A INNER JOIN TABLE B
ON A.ID = B.ID
I want to join two tables and then I want to join this result with another table
but it doesn't work
select * from
(
(select SeId,FLName,Company from Sellers) s
inner join
(select SeId,BIId from BuyInvoices) b
on s.SeId=b.SeId
) Y
inner join
(select * from BuyPayments) X
on Y.BIId=X.BIId
thanks
In most databases, your syntax isn't going to work. Although parentheses are allowed in the FROM clause, they don't get their own table aliases.
You can simplify the JOIN. This is a simpler way to write the logic:
select s.SeId, s.FLName, s.Company, bp.*
from Sellers s inner join
BuyInvoices b
on s.SeId = b.SeId inner join
BuyPayments bp
on bp.BIId = b.BIId;
I have three tables in sql-server like table A table B table C.
How can I join 3 tables as expressed in the image below?
More information needed to give you a correct piece of code, but from the image you need LEFT JOINs.
(ID's have been presumed)
SELECT *
FROM Customers c
LEFT JOIN Items i ON c.iid = i.id
LEFT JOIN Sales s ON c.sid = s.id
It's never too late :)
Most probably you'll need this:
select ...
from customers
full outer join (items inner join sales on (xxx)) on (xxx)