Transact SQL :: Extracting From 3 Related Tables And Including MAX Function
Oct 5, 2015
I have these 3 tables in a database for printed chamber music works:
Table INSTRUMENTS: List of musical instruments
Column ID -- int, primary key
Column sInstrument -- string
Table PTRS_INSTRUMENTATION:
Column ID -- int, primary key
Column lInstrument -- int, points to a row in table INSTRUMENTS via ID
Column lMainItem -- int, points to a row in table MAINITEMS via ID
Column lInstrSeqNum -- int, sequential number of like instruments within one Main Item
Table MAINITEMS: List of chamber music works
Column ID -- int, primary key
Column sItem -- string
Each chamber music work (Main Item) requires an ensemble of musicians playing several instruments. Some of them may be the same, such as 2 violins. A classical quartet, for instance, consist of 2 violins, 1 viola and 1 cello. I am concerned here only with one of the instruments (although it may occur several times).
I want to extract a list of Main Items where the instrument is given (e.g., 'violin'),
And the maximum of PTRS_INSTRUMENTATION.lInstrSeqNum is a given number (e.g., 2).
I would like to wrap the following code in a function and reuse it. I use this code in many triggers.
DECLARE @Action as char(1); SET @Action = (CASE WHEN EXISTS(SELECT * FROM INSERTED) AND EXISTS(SELECT * FROM DELETED) THEN 'U' -- Set Action to Updated. WHEN EXISTS(SELECT * FROM INSERTED) THEN 'I' -- Set Action to Insert. WHEN EXISTS(SELECT * FROM DELETED) THEN 'D' -- Set Action to Deleted. ELSE NULL -- Skip. It may have been a "failed delete". END)
Is it possible to write a function and pass the INSERTED and DELETED logical tables to it?
I have simple query that works fine if I write it every time. I want to get this one time group by each year and week ending. here us the query:
Select count(distinct ID) from table1 where year<=2015 and WeekEnding<='05/09'
Select count(distinct ID) from table1 where year<=2015 and WeekEnding<='05/16'
Select count(distinct ID) from table1 where year<=2015 and WeekEnding<='05/23'
How can I get the count for each week year and each week ending? Weekending 05/16 will include ID's from weekending 05/09 as well and week ending 05/23 will include all the ID's from 05/16 and 05/09 and so on...
SQL express 2012. I am trying to case in the where part and having a syntax errors - This is what i am trying to do:
select all the days in week number x including last year if necessary... so if the year start not at the beginning of the week then look in last year as well ( for the same week number of this year and last week nu of last year)
declare @yyyy int = 2014,-- THE YEAR @mm int = 1,-- THE MONTH @week1No int = 1,-- THE WEEK NUMBER IN THE YEAR @week2No int = 37-- THE last WEEK NUMBER IN last YEAR select count(tblDay.start)-- tblDay.start IS smallDatetime
How can i pass my .net application's Userid to the trigger? I have a audit trail trigger on myTable. I dont know how to pass the userid (not the sql server user) to the trigger when a user delete a record from the application(.NET Application).
The trigger saves the modifications on the table including the userid of one who does the changes.
I am trying to case in the where part and having a syntax errors - this is what i am trying to do:
Select all the days in week number x including last year if necessary... so if the year start not at the beginning of the week then look in last year as well ( for the same week number of this year and last week nu of last year)
declare @yyyy int = 2014,-- THE YEAR @mm int = 1,-- THE MONTH @week1No int = 1,-- THE WEEK NUMBER IN THE YEAR @week2No int = 37-- THE last WEEK NUMBER IN last YEAR select count(tblDay.start)-- tblDay.start IS smallDatetime
Collin writes "i have tried to do a query between 2 different tables that have different columns. within both these tables there is a column that has a column name different from the column name of the other table but the data within both columns is the same. i wanted a query that compares the data between the 2 tables.
Example is:
Table 1 Columns : firstname , age , id , grade.
Table 2 Columns : name, sex , school.
lets say that the data of column "firstname" of table 1 contains the same data as column "name" of table 2 and i would want to do a query that retrieves records for where data in the column "firstname" in table 1 is found in column "name" of table 2.
sql server 2000 with service pack 3 running on windows 2003 server service pack 1 Rgds, Mr. C. "
I have a table of students, and a table of lecturers, and I wish to use one select statement to return a list of users.
What I really need to do is something like this:
SELECT Students.UserID AS UserID, Lecturers.UserID AS UserID, Students.FullName AS FullName, Lecturers.FullName AS FullName FROM Students, Lecturers
which would (in my dream world!) produce something like:
UserID FullName s0002131 Darren Student s0054242 Richard Student e13412 Michael Lecturer x92342 Linda Lecturer
Does anyone know how I should do this? Should I be doing it in an stored proceedure and returning the record set from that? Currently I'm only using ASP and one line SQL statements, and would like to continue doing so.
i'm not able to generate a sql script with the data in the tables! using sql express. i need this script to ganerate the same database with its datas in a new sql server. thanks in advance
Goal is to get the data after the 2<sup>nd</sup> ; until the next ; starts. Ideal would be to catch everything between the 2<sup>nd</sup> ; en 3<sup>rd</sup> ; (number should be 10 characters).
If I try to select this data just using charindex it only goes until it finds the first ; (of course), what’s the best approach in this?
I have this pivot table (I only post the static version as the problem only regards the single quotes)
SELECT * from( select DATEPART(year,DeliverydatePackingSlip) as Year, CASE WHEN DiffPromiseDateFirst < 0 Then '1 - too early' WHEN DiffPromiseDateFirst = 0 Then '2 - on time' ELSE '3 - too late' END as Delivery from iq4bisprocess.FactOTDCustomer WHERE OTD_Exclusion = 0)a PIVOT ( COUNT(Year) For Year
in ([2012],[2013],[2014],[2015])) as pvtNow, packing everything in a string parameter I always stumble over the single quotes. I tried to replace them with CHAR(39), I tried to define a parameter for each occurrence, but always get a syntax error. What am I doing wrong?declare @sql nvarchar(max)
declare @title1 nvarchar(20) declare @title2 nvarchar(20) declare @title3 nvarchar(20) set @title1 = '1 - too early' set @title2 = '2 - on time' set @title3 = '3 - too late'
[Code] .....
exec sp_executesql @sqlThis would throw:Msg 102, Level 15, State 1, Line 3 Incorrect syntax near 'early'.
I would really apprecite if anyone could make a comment on this...
what i wanna know is.... there are two tables, called 'A' and 'B' with identical structures... is it possible to Perform the following in a single SQL ....
* If A->Field1 = B->Field1 then A->Field2 + b->Field2 * Records of table 'A' which not in table 'B' and * Records of table 'B' which not in table 'A'
I need to find the total StatusDateTime for each TicketId I need to find the average StatusDateTime for all TicketIDs Ex. TicketId, "T10001", has 4 records based on the Seq column.
By using this, I should be able to find the amount of time between the first Seq and the last Seq to get a total time span for Ticket.
Expanding on this, I should be able to add up all of the Ticket's calculated time spans and divide by the number of tickets to get the average time span.
Hi @ll, I'm trying to extract data from a database where columns have names with spaces inside, I show an example:
select "total amount" from sales;
This query shows me all data stored in the "total amount" column in table sales, ok no problem.
Well, the problem comes when I try to execute this query with osql because the output text file where I put the data only have the text "total amount".
I use the query as I wrote before stored in a text file.
I'm doing something like this:
osql -U user -P passwd -i query.sql -o textfile.txt
Is it possible to get data-type,default-value, etc. (basically schema information) of columns in a particular query.This is something similar to what we get when we execute the following
SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'Employees'
But instead of TABLE_NAME i would like to give a query like
SELECT [EmployeeID],[LastName],[FirstName] from [dbo].[Employees] order by [EmployeeID].
I have a table here. I want find a way of getting the latest date, when the code is the same. If the Declined date is null. Then I still want the latest date. E.g. ID 3.
If the declined date is filled in. Then I want to get the row, when the Datein column value is greater then the declined date only.
I tried grouping it by max date, but i got an error message when trying this out. Against the code
WHERE MAX(Datein) > Declined
An aggregate may not appear in the WHERE clause unless it is in a subquery contained in a HAVING clause or a select list, and the column being aggregated is an outer reference. What do I need to do to get both my outputs working?
On the web form I have textboxes for the Purchase No., date and part description, and a drop down list for the machine name. How do I insert them into the different tables?
I've just start learning ASP.NET and I am using Web Matrix for this. The examples I've seen so far only shows how to insert into a single table.
hi this is probably a dumb question with an easy answer but does anyone know how to do this...
2 tables, one is a supplier list (id, supplier_name) and the other is an order list (id, order_name, supplier_id... etc)
basically i need to join the 2 tables together (id=supplier_id) but i need to display the results without the supplier_id and the supplier table id, only the supplier name?
do i have select only the specific fields I want? or can I exclude the supplier_id and the id from the supplier table?
Hi all. how could i join unrelated tables? for example: table1: employee dcno name address telno 1 sarah philippines 111 2 john india 222 3 joy usa 333
table2: hospital hospname location owner hosp1 loc1 billgates hosp2 loc2 ann hosp3 loc3 love hosp4 loc4 vic
I have 2 tables with this design: one has ArticleID as primary key and multiple other fields and one has GroupID as primary key and multiple other fields. Each article can belong in multiple groups so I created a new table called articleGroups with only 2 fields: ArticleID and GroupID to show the groups associated with each article. There is a relation between this table and each of the main 2 tables. My question is, in the articleGroup table, does it make any sense to create an Index on ArticleID, GroupID or both? Since the group is needed for each article the Groups will always be queried everytime the article is queried. So, I am not sure if an index is needed?
Please give your ideas about how to create a query from two tables, which have many-to-many relationship. For example, we have table Book and table Author and consider, that one author had wroten several books and one book had being wroten by several authors. So we have many-to-many relationship of these two tables. Usually this sutuation resolves by maens of creating the third table AuthorBook, which consist of key fields from the Author table and key fields from the Book table. So that the Author table is the parent table to AuthorBook, and the Book table is the parent table to AuthorBook. So we have two relations one-to-many. Now the question is how to get all related values from both tables, using JOIN operation and the conjunctive table?
I work in Healthcare IS for Company A, but Company B is hosting one of our EMR programs for us. This was done on purpose, so that whether a patient is seen at one or the other, their medical history is more complete. However, this puts all of the data that I need to get to on a server across town that I can only access via Sql Server Management Studio as a linked server.
Now, in some ways, the performance has been better than I expected, but sometimes it behaves very erratically. I am using OPENQUERY to handle all of the pulls, and am not joining to any local tables, in order to maximize efficiency.
Here is some of the code I run, and what happens:
SELECT * FROM OPENQUERY([linkedservername], ' SELECT * FROM Encounter_ItemChild
[Code] ....
***The above query was programmatically generated by taking the IDs from the second query, and packing as many into the IN condition as possible. Each statement could hold only about 900 IDs, so around 70 queries get built...however, each one returns the records in question in 1-2 seconds.
My main question is...if the second query pulls all IDs from Encounter in a few seconds, and that query is used in the first query's WHERE clause, why does it spin and spin, while manually throwing the IDs in instead runs almost instantly?
We are migrating our database(s) from ORACLE to SQL. In Oracle we were able to issue a SELECT statement and see all of the locks (Blocking and Non-Blocking) currently in the system. The query also included the Process ID of the process we needed to kill in order to get rid of the lock.
We now need to create the same type of query for Microsoft SQL Server 2012. I have seen postings on different sites saying that this info can be obtained using SP_WHO2 or using the SQL Server Management Studio Activity Monitor's PROCESSES tab, but we are looking for a SELECT statement that will give us similar information.
I have a relationship database that contains two related tables. Table1 has the fields Customer_Name, Customer_ID, and products_Purchased. Table2 has the fields Customer_Name and Cutomer_ID. I would like to add a new row to Table1for a new purchase by a cutomer. When I try to add a new value in Table1 I get an error message saying I can't add a value to table1 because it requires a corresponding value in Table2. I am using the following code: '********************************************** ("INSERT INTO [Table1]([products_Purchased], [Customer_ID]) VALUES('" & textBox..Text & "'," & session("ID") & ")" ' ***************************************** How do I write an INSERT STATEMENT that adds vaules to both tables, so that the code works? Any HELP would be appreciated. charlie
I want retrieve data from 3 table my tables structure is this
tblUsers
U_ID - Name
3 John
tblGroups
G_ID - Name
5 Admins 6 Moderators
Now I want join some of the users to different groups for example John maby is a member of two groups (Admins and Moderators)
in order to do this I created a new table names tblGroupsUsers
tblGroupsUsers
ID - User_ID - Group_ID
1 3 5 1 3 6
its ok, but Now I don't know how to retrive my users list from database I don't know how to write a wuery for this I have tried this :
strSQL = "SELECT tblUsers.name, tblUsers.U_ID, tblGroups.G_ID, tblGroupsUsers.Group_ID, tblGroupsUsers.User_ID FROM tblUsers INNER JOIN tblGroupsUsers ON tblGroupsUsers.User_ID = tblUsers.U_ID, tblGroups WHERE tblGroupsUsers.Group_ID = tblGroups.G_ID ORDER BY tblUsers.name ASC;"
Its working withut error but the problem is the results its like this
John
John
its will retrive the username twice , I think its reading based on tblGroupsUsers table because it has two rows , help please I need this how can I configure my query to get eache name once
