How Do I Join Two Tables In SQL Server?
Mar 4, 2008
I have been reviewing the video series at this site and have found them very helpful but have a need...
I have two data tables one of which is quite large and another table that is small. They have at least one exact field in common, lets call it room number. How do I recognize both tables (in different databases) and join them so I can search a unique item in one table and select its associated data in the other table? I don't image there is a video on this topic for this VB.NET student?
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May 12, 2006
Hey, I have two databases (db1 and db2) under the same server. How do I combine tables from both of them?I searched the forum and triedSELECT
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Oct 11, 2015
I have two tables, INCIDENT and PEOPLE
INCIDENT has two fields, ID and Date
PEOPLE has three fields, INC_ID [foreign key to INCIDENT.ID], PersonIteration, Complaint
There is always only one incident, but there can be one or more people involved in each incident.
I'd like to retrieve incidents, but have it include information from all involved person on one line.
No matter how I have tried to join these tables, I am ending up with one record each for each person involved in an incident, like so
ID PersonIteration Complaint
1 1 Head
1 2 Neck
1 3 Shoulder
I would like to join in this fashion:
ID PersonIteration1 Complaint1 PersonIteration2 Complaint2
1 1 Head 2 Neck
Is there any way to do this?
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Jan 29, 2015
I am new in SQL and i need do a query where I need sum values from 2 tables, when i do it the Sum values are not correct. this is my query
SELECT D.Line AS Line, D.ProductionLine AS ProductionLine, D.Shift AS Shift, SUM(CAST(D.DownTime AS INT)) AS DownTime,
R.Category, SUM(Cast(R.Downtime AS INT)) AS AssignedDowntime,
CONVERT(VARCHAR(10), D.DatePacked,101) AS DatePacked
FROM Production.DownTimeReason R
left JOIN Production.DownTimeHistory D
[Code] .....
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Oct 4, 2015
I have two tables tabA (cola1, cola2, cola3) and tabB(colb1, colb2, colb3, colb4) which I need to join on all 3 columns of table A.
Of the 3 columns in tabA, few can be NULL, in that case I want to check the joining condition for the rest of the columns, so its conditional joining. Let me rephrase what I am trying to acheive - I need to check if the columns in joining condition is NULL in my 1st table (tabA), If so I need to check the joining condition for the rest of the two columns, if 2nd column is again NULL, I need to check the joining condition on the third column.
What I am trying to do is as below. Its working, but is very slow when one of the tables is huge. Can I optimize it or rewrite in a better way ?
--- First Create two tables
Create table tabA
(cola1 nvarchar(100), cola2 nvarchar(100), cola3 nvarchar(100))
Insert into tabA values (NULL,'A1','A2')
Select * from tabA
create table tabB
[Code] .....
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Dec 11, 2013
I have two dynamic pivot tables that I need to join. The problem I'm running into is that at execution, one is ~7500 characters and the other is ~7000 characters.
I can't set them both up as CTEs and query, the statement gets truncated.
I can't use a temp table because those get dropped when the query finishes.
I can't use a real table because the insert statement gets truncated.
Do I have any other good options, or am I in Spacklesville?
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Jan 20, 2015
How to join 2 heap tables with out any common fields.
for example tbl1 has
col1
1
2
3
4
5
and tbl1 2 has
col2
a
b
c
I want the output like
col1 col2
1 a
2 b
3 c
4
5
is this possible with out using row_number()?
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Jul 3, 2015
I have 3 tables as per following:
orddet
OrderProductQtyOrd
1 Item1 20
2 Item1 10
3 Item2 10
4 Item1 5
4 Item2 5
ordhead
OrderDate
110/06/2015
205/07/2015
307/06/2015
415/08/2015
product
ProductdescMinQty
Item1This is 110
Item2This is 220
I want to pull only the 1 line for minqty for an item as follows
OrderProductQtyOrddate minqty
1 Item1 20 10/06/2015 10
2 Item1 10 05/07/2015
3 Item2 10 07/06/2015 20
4 Item1 5 15/08/2015
4 Item2 5 15/08/2015
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Jul 15, 2015
I have two queries from two different tables ex ABC and BCD. For table ABC, according to my query, I got 11 records ; for table BCD I only got 9 records.
Bottom line: I would like to see only 11 records from Table ABC including certain data from table BCD after I joined this two tables.
However, no matter what I did I always got 99 records when I joined.
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Aug 17, 2007
Hi guys,
I'll appreciate any help with the following problem:
I need to retrieve data from 3 tables. 2 master tables and 1 transaction table.
1. Master table TBLOC contain 2 records :
rcd 1. S01
rcd 2. S02
2. Master table TBCODE contain 5 records:
rcd 1. C1
rcd 2. C2
rcd 3. C3
rcd 4. C4
rcd 5. C5
3. Transaction table TBITEM contain 4 records which link to 2 master table:
rcd 1. S01, C1, CAR
rcd 2. S01, C4, TOY
rcd 3. S01, C5, KEY
rcd 4. S02, C2, CAR
I use Left Join & Right Join to retrieve result below (using non-ASNI method) but it doesn't work.
Right Join method:
SELECT C.LOC, B.CODE, A.ITEM FROM TBITEM A RIGHT JOIN TBCODE B ON A.CODE = B.CODE
RIGHT JOIN TBLOC C ON A.LOC = C.LOC
GROUP BY C.LOC, B.CODE, A.ITEM ORDER BY C.LOC, B.CODE
When I use Non-ASNI method it work:
SELECT C.LOC, B.CODE, A.ITEM FROM TBITEM A, TBCODE B, TBLOC C
WHERE A.CODE =* B.CODE AND A.LOC =* C.LOC
GROUP BY C.LOC, B.CODE, A.ITEM ORDER BY C.LOC, B.CODE
Result:
LOC CODE ITEM
-----------------------------
S01 C1 NULL
S01 C2 NULL
S01 C3 CAR
S01 C4 TOY
S01 C5 KEY
S02 C1 NULL
S02 C2 CAR
S02 C3 NULL
S02 C4 NULL
S02 C5 NULL
Please Help.
Thanks.
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Jun 20, 2015
Refer to my query thread on msdn SQL site, how I can achieve the result.
[URL] .....
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Sep 1, 2014
Looking to improve performance of the following code.
It basically generates future days for each dog. So there is a dog table and a day table with every day.
These 2 table cross join and then fill in missing rows. As time moves i will fill in further future dates but will need the initial insert to be a reasonable query.
All columns are covered by index's but the queries at the end take quite a long time. I would hope for index scan to just point out the missing rows especially on the final query.
How to make the last query as fast as possible.
IF OBJECT_ID('dbo.[AllDates]', 'U') IS NOT NULL
DROP TABLE dbo.[AllDates]
CREATE TABLE dbo.[AllDates] (
[Date] date not null PRIMARY KEY
)
;WITH Dates AS
[Code] .....
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Feb 6, 2015
I have a table of "applicants" with unique applicant id and another table "reviews" with reviews which has unique id and Emplid and contains general program name like Math and then may contain 3 addition rows for specific program like Calculus, algebra, geometry etc.
There may or may not be a record for each applicant id in table reviews or there can be 1 or more than one record in reviews based on level of review( General or Specific).
All the general reviews has “Math” as Program_code but if there are more reviews, they can have Program_code like “Cal” , “Abr”, “Geo”
I want to join the tables so I can get all the records from both the tables where Program_code in reviews table is “Math” only.
That is I want to join the table and get all the records from reviews table where the program_code is “Math” only
How can I do that?
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Dec 21, 2006
hi,
this are my tables...
student
stud_num
pk2
pk3
stud_group
1234
11
22
1
2147
88
66
2
2222
22
22
2
5432
55
44
1
9876
99
77
1
student1
stud_num
pk2
pk3
age
grade
pass
1234
11
22
21
77
0
5432
55
44
23
90
1
9876
99
77
23
90
1
student2
stud_num
pk2
pk3
age
grade
pass
2147
88
66
18
78
0
2222
22
22
15
90
1
and this is what I want to retrieve from these 3 tables
stud_num
pk2
pk3
age
5432
55
44
23
9876
99
77
23
2222
22
22
15
this my query....
SELECT student.stud_num, student.pk2, student.pk3, student1.age, student2.age AS Expr1FROM student INNER JOIN student1 ON student.stud_num = student1.stud_num AND student.pk2 = student1.pk2 AND student.pk3 = student1.pk3 INNER JOIN student2 ON student.stud_num = student2.stud_num AND student.pk2 = student2.pk2 AND student.pk3 = student2.pk3WHERE (student1.grade = '90') AND (student1.pass = '1') AND (student2.grade = '90') AND (student2.pass = '1')
however...it doesnt return any results...
can anyone correct my code?
thanx!
Sheila
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Jun 23, 2007
I have two tables in sql server database. Tables are
Authors
AuthorName varchar (primary key), AuthorImage varchar
Threads
ThreadID int Primary Key, ThreadAuthor varchar, ForumID int (Foreign Key), ThreadReplyID int, ThreadPostedDate int
I have this query:
"SELECT ThreadAuthor, ThreadSubject, ThreadPost, ThreadPostedDate , ForumID FROM Threads WHERE ThreadID = " + threadId + " OR ThreadReplyID = " + threadId + " ORDER BY ThreadPostedDate ASC"
but i want to display AuthorImage on my webpage. How to modify the existing query to get the Author's image also.
Plz help me out anyone there.
Thanks
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Aug 22, 2007
do they have to have a common primary key?
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Sep 6, 2007
i've two tables.
such as tableA and table B
table A has a column named CreatedBY and table B the same column..
now i need to get only the rows which match with table A's createdby column..
suppose tableA has only 2 values. when i make the join with tableB it shows as 4 values
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Sep 7, 2007
I need to perform a join on six different tables to produce a report. The biggest join I have ever done has been four tables. The way I did that query was to join three tables and then to perform the final select on the three table join.
Can anyone give me some advice. Should I use the same approach? Or can I just continue to use the keyword INNER JOIN to perform the joins?
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Apr 11, 2008
How to join two tables in database(sqlserver2005)(i gave primary key for each table)
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Apr 22, 2006
I am curios about what really happens when I join two tables?
Does a SQL server create a runtime table and write that table to disk is there is not sufficent space in RAM?
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Jun 11, 2001
I have three tables:
1) Orders - order_id, orderdate
2) ordersdetails - order_id, partnumber, qty
3) products - partnumber
I need an output in following format
Date Partnumber qty
Following query gives the desired results.
select left(orders.orderdate,11) as date, orderdetails.partnumber, SUM(orderdetails.qty) as total
from orderdetails, orders
where orderdetails.partnumber is not null
and orderdetails.order_id = orders.order_id
and orders.orderdate >= {ts'2001-05-01 00:00:00'} and orders.orderdate <= {ts'2001-05-31 23:59:59'}
group by orders.orderdate, orderdetails.partnumber
order by orders.orderdate, total
But I do not have part that have null orders. My goal is to get
1) Get all part numbers, qty in the month of May.
2) at the end attach all partnumbers that have null ordered values to see which one have no orders.
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May 10, 2000
I have tables (tab#1, tab#2, tab#3, tab#4) that made of the orginal table(tab#0)
What I want to do is to join all tables(tab#1 through tab#4) to tab#0.
Tables look like;
1)tab#0
key_id, code
2)tab#1
id, code#1
3)tab#2
id, code#2
4)tab#3
id, code#3
5)tab#4
id, code#4
Any idea?
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Jan 11, 2001
Hi,
I have 2 tables. One with col1,col2 and second one with
col1,col2,col3. My requirement is to compare col1,col2
of t1 with t2 and update only changed records in t2.
How to implement? Please advise.
Thanks
Sam
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Jul 21, 2006
Thank you, Thank you for reading my question!!! :)
I have 3 tables that need to be joined.
(Not necessarily needed info but might help: using Coldfusion with ODBC to Foxpro database)
Table 1: Timecard
--------
loginname date wrknum time
----------- --------- --------- ------
afrank 7/17/06 1 3
afrank 7/17/06 2 2
afrank 7/17/06 3 3
afrank 5/20/06 1 3
rjohn 7/17/06 1 3
.....
Table 2: Defaults
-----------
loginname wrknum
----------- ---------
afrank 1
afrank 2
afrank 3
afrank 4
afrank 5
....
Table 3: Workorders
wrknum description
---------- ---------------
1 descrip1
2 descrip2
.....
The result needs to be for the user afrank, date=7/20
and would look like:
Resultant Table:
loginname wrknum time description
----------- ---------- ------ ------------
afrank 1 3 descrip1
afrank 2 2 descrip2
afrank 3 3 descrip3
afrank 4 NULL descrip4
afrank 5 NULL descrip5
I've tried an outer left join but cannot get the right data. Basically everything from the timecard table and the leftovers from the default table with descriptions for all.
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Nov 30, 2004
I've got two tables, one called clientsharedeals and the clientorderdeals. In the first table, I have four fields (Rundate, Accno, Dealid, Nominal) that I need to sum(Nominal), grouping by dealid.
Once I've done this, I need to join to clientorderdeals, also having the same fields plus one extra (Rundate, Accno, Dealid, Nominal and Dealseq). Because of Dealseq, I can have more than one row in the table, matching (Rundate, Accno, Dealid, Nominal) of the first table. However, Dealseq increments, so I need to select max(Dealseq).
My query is doubling up on nominal because in my select statement, I am only using one account number, so I know what the value is for nominal and there are two rows in clientorderdeals - and it is not selecting max(dealseq) but both.
Can someone please cast some pearls my way ?
Thanks
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Dec 20, 2004
Could somebody please explain to me how do we join a table onto itself as that is what I was advised to do but I can't quite get where I want to go.
What I want to do is list values from a table,but those values can be just a quote (what would cost if they decided to go for that option) or those values can represent what was spent and invoiced, what is confusing me is that all of that gets saved in the same table and in same columns, so what was quoted for example for AirFares and what was spent gets saved in the same record but when it is "quoted amount" then ID = 1 but when it is invoiced ID = -1 and that is how we know what was quoted and what was invoiced.
But I need to split that one field into two columns one showing AirFareQuoted and one AirFareInvoiced and i have no idea how to achieve this.
I hope this makes sense and somebody can help me
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Dec 28, 2004
hi,
I knew how to join 2 tables but i have a process to select 3 tables. I have a sample table and field below. I want to join Parts & Orders using field Prt_no and Supplier & Parts using field Sup _code
Parts table Orders Table Supplier Table
Prt_no Prt_no Sup_code
Prt_name Oh_qt Sup_name
Re_Level Or_no
Pri_amnt
Sup_code
Thanks...
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Apr 28, 2006
Hi,
have to tables t1 and t2
t1 is in database db1
t2 is in db db2
Is it possible to join these two tables with an sql statement. or do i have to join my two datasets in my c#- Code
Greetz
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Oct 9, 2007
Hey Folks,
I am stuck at one place in data migration........ I have the following source tables having no PK / INDEX / Constraint defined on any of them........
T1
(
ID1 INT,
STYLE VARCHAR(34)
)
T2
(
COL_ID VARCHAR(34),
OBJ_ID VARCHAR(34)
)
T3
(
OUT_ID VARCHAR(34),
ITEM VARCHAR(34),
)
And here is the relation..........
Quote:
T1.STYLE = T2.COL_ID
T2.OBJ_ID = T3.OUT_ID
T3.ITEM = T2.COL_ID
Here is what I have tried with.........
Quote:
SELECT * FROM T3 WHERE ITEM IN
(
SELECT COL_ID
FROM T1
INNER JOIN T2
ON
T1.STYLE = T2.COL_ID
INNER JOIN T3
ON
T2.OBJ_ID = T3.OUT_ID
)
But this query is not helping me out. I mean the number of output records are 0.
Now can any one suggest me a join that includes all the 3 tables, or finetune my query?
Thanks,
Rahul Jha
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Apr 9, 2008
Hi,
Hello how can we see the result of this query in single table . I am new with this and i dont know how to use join and all syntax.
SELECT request_session_id,resource_type,
request_status, request_type,request_reference_count,
resource_database_id FROM sys.dm_tran_locks
go
select getdate () as Date,@@servername as servername, name ,size*8/1024 as size_MB
from sys.master_files;
go
SELECT request_session_id,resource_type,
request_status, request_type,request_reference_count,
resource_database_id FROM sys.dm_tran_locks
select cpu ,memusage,hostname from sysprocesses
CREATE PROCEDURE dbo.usp_ShowAvailableSpace
AS
SELECT name AS NameOfFile,
size/128.0 -CAST(FILEPROPERTY(name, 'SpaceUsed' )AS int)/128.0 AS AvailableSpaceInMB
FROM dbo.SYSFILES
GO
EXEC usp_ShowAvailableSpace
select * from sys.sysprocesses
SELECT (a.cntr_value * 1.0 / b.cntr_value) * 100.0 [BufferCacheHitRatio]
FROM (SELECT *, 1 x FROM sys.dm_os_performance_counters
WHERE counter_name = 'Buffer cache hit ratio')
a
,
(SELECT *, 1 x FROM sys.dm_os_performance_counters
WHERE counter_name = 'Buffer cache hit ratio base')
b
select * from sys.dm_exec_sessions
select creation_time ,last_execution_time,execution_count ,
total_physical_reads,last_physical_reads,min_physical_reads,
max_physical_reads,total_logical_writes,
last_logical_writes,min_logical_writes,max_logical_writes,
last_elapsed_time,min_elapsed_time,max_elapsed_time
from sys.dm_exec_query_stats
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Apr 9, 2008
sorry for the noob question.
anyone know how to use inner join, left join or right join to join more than 2 tables? e.g. 3 tables
Thanks in advanced
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Jun 21, 2008
hi everybody
I have a question and need answer as soon as possible. so i hope i get help. How can i join two tables have no common fields? I tried outer join but i get redundant data(repeated values).
Give me a script to solve the following problem . There are no real wrong answers, but the more efficient and bulletproof the query is the better. Assign rooms to classes based on capacity using the Classes and Rooms tables. Rules: each class should have a room (and NULL if a room is not available). No class can be in a room where there are more students than capacity. No room can be used twice.
And this is the tables query:
CREATE TABLE Classes (
ClassID int NOT NULL,
Class varchar (50),
Students int NOT NULL, CONSTRAINT PK_Classes PRIMARY KEY CLUSTERED (ClassID
) )
GO
CREATE TABLE Rooms (
Room int NOT NULL,
Capacity int NOT NULL,
CONSTRAINT PK_Rooms PRIMARY KEY CLUSTERED (Room)
)
GO
INSERT INTO Classes (ClassID, Class, Students) VALUES (1, 'Whats New for SQL Server 2008', 65)
INSERT INTO Classes (ClassID, Class, Students) VALUES (2, 'Introduction to Silverlight 1.1', 52)
INSERT INTO Classes (ClassID, Class, Students) VALUES (3, 'XQuery Deep Dive', 35)
INSERT INTO Classes (ClassID, Class, Students) VALUES (4, 'Ranking and Windowning', 35)
INSERT INTO Classes (ClassID, Class, Students) VALUES (5, 'Expression Blend 1.1', 65)
INSERT INTO Classes (ClassID, Class, Students) VALUES (6, 'Database Design Patterns', 75)
INSERT INTO Classes (ClassID, Class, Students) VALUES (7, 'CrossTabs for Dummies', 1)
INSERT INTO Rooms (Room, Capacity) VALUES (221, 30)
INSERT INTO Rooms (Room, Capacity) VALUES (222, 40)
INSERT INTO Rooms (Room, Capacity) VALUES (223, 50)
INSERT INTO Rooms (Room, Capacity) VALUES (224, 60)
INSERT INTO Rooms (Room, Capacity) VALUES (225, 70)
INSERT INTO Rooms (Room, Capacity) VALUES (226, 74)
GO
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Oct 14, 2013
I have two tables:
T1 and T2.
T1 has 1 row as
name and age
T2 has 2 rows as
name, money1
name, money2
I use left outer join and get two rows in the resulting table.
As name, age, money1
and name, age, money2
Is there any way using which i can get data like:
name, age, money1, age, money2
in one row?
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