Help Needed With Calculating Average For Both Parent And Child Rows
Mar 29, 2008
I am trying to create a SSRS report that needs to show average for both parent and child rows. In the example below i need to show an average of ErrorRecAge column for Company, then for cic_Group and one grand total/avg. How can this be done from single query (as below) and using SSRS built in functions/codes? I am also curious to know if this can be done from TSQL directly (ex. something similar to running sum/total). I appreciate the help.
Select
CustomerCorrection.Id As ParentId,
cc_company As cc_company2,
ccError.Id As ErrorId,
COALESCE(cic_Group,'Other Errors') As cic_Group,
COALESCE(cic_Code,'Unknown') As ErrorCode,COALESCE(cic_Description,'Unknown') As ErrorDescription,
DateDiff(hh,cc_entrydt,getdate())/24.00 AS ErrorRecAge
Out of this table what I need to do is calculate the average value for each same [Name]. As you can see from the sample set above, the Diameter1 has 2 entries value hich gets store at different time of course.
So I I take the example of Diameter1 I need to calculate and display in a field the average results. The result would be
Name Average ===================== Diameter1 ..... Diameter2 .... Temperature2 .... Temperature1 ....
How can I perform this ?
Or could it be better to get a view of the table above which gets display as follow :
Given the sample data and query below, I would like to know if it is possible to have the outcome be a single row, with the ChildTypeId, c.StartDate, c.EndDate being contained in the parent row. So, the outcome I'm hoping for based on the data below for ParentId = 1 would be:
1 2015-01-01 2015-12-31 AA 2015-01-01 2015-03-31 BB 2016-01-01 2016-03-31 CC 2017-01-01 2017-03-31 DD 2017-01-01 2017-03-31
declare @parent table (Id int not null primary key, StartDate date, EndDate date) declare @child table (Id int not null primary key, ParentId int not null, ChildTypeId char(2) not null, StartDate date, EndDate date) insert @parent select 1, '1/1/2015', '12/31/2015' insert @child select 1, 1, 'AA', '1/1/2015', '3/31/2015'
I need to read a file and write parent/child relationship rows. I cannot seem to fugure out how I can generate keys that I an use for the relationship.
I looked at using a variable, but have no joy - I cannot instantiate the variable and it errors - notsure wy.
I also looked to see if I can write to a DB table that maintains key id, but not sure how to do that.
I alo thought of setting up the parent table key to be auto-increment,but canot see how I can read this so that I can us it in the child row inserts.
My Question: Does anyone know of a decent way (i.e. I do not want to loop to insert each row and check the SCOPE_IDENTITY() field or anything like that) to copy parent/child rows to their same respective table besides using the method I have listed below (my manager does not really like the idea of the "PreviousID" field)? More details are listed below.
My Table Situation: I have a parent table and a child table. Both tables have an identity column as the primary key. The relationship between the tables is established using the parent table's primary key to the column in the child table that stores the relationship. The identity column in both tables is the only column that is unique in the tables.
Sample Data (made up and simplified for visualization purposes): ParentTable - "Items" ID ItemCategory Price 1,T-Shirt,$20 2,Blue Jeans,$50 3,T-Shirt,$40
My Need: I need to make a copy of the records (keeping the parent/child relationship intact) to the same table as the source records. For example, in my data example above, I may need to make a copy of all the "T-Shirt" items and their child records. As the parent records are copied, they will be assigned new keys since the primary key is an identity. Obviously, this new key needs to be used when creating the child records, but I need to somehow associate this new key to the new child records.
Possible Solution: I know this can be achieved by adding another column to the parent table to store the "PreviousID" (INT NULL). Using this new field, when I want to copy the "T-Shirt" items, I would insert the new records and store the ID of source records (i.e. the identity value of the row that was copioed would be stored in this "PreviousID" field). Once the parent record has been copied, I could then insert the child records, and I could join on the "PreviousID" field to get to the new ID to use for inserting the copies of the child records.
I've 2 tables QuestionAnswers and ConditionalQuestions and fetching data from them using CTE join and I'm seeing repetitive rows (not duplicate) like, If you have multiple answers for 1 question, the output is like
where london where paris where toronto
why us why japan why indonesia
I want to eliminate the repetitive question and group them as parent child items.
with cte as ( select cq.ConditionalQuestionID from ConditionalQuestions cq inner join QuestionAnswers qa on cq.QuestionID=qa.QuestionID where cq.QuestionID=5 and qa.IsConditional='Y') select distinct q.Question, a.Answer from QuestionAnswers qa inner join Answers a on a.AnswerID = qa.AnswerID inner join Questions q on q.QuestionID = qa.QuestionID inner join cte c on c.ConditionalQuestionID = qa.QuestionID;
I am working on SQL server 2005 Reports. I have one report, one dataset is assigned to it, and one table which displays it. Now I come accros requirement that, the column value in the filter condition for the table is present in one textbox.
I can not use textbox i.e. reportItems in filter condition. Can someone suggest me how to use textbox value in filters?
I want to display parent/child records on report. I am not getting the proper solution.
The data is like this:
Sequence ItemCode IsParent
1 XYZ 0 'do not have child record
2 PQR 1 'have child records with sequence no 3
3 ASD 0
3 AFDGE 0
3 VDC 0
4 ASR 1 'have child records with sequence no 5 5 ASR 0
If IsParent = 1, that record has child records with sequence = parent sequenece + 1
I think u can understand the data I need to bind, and it is like:
XYZ
+ PQR
ASD
AFDGE
VDC
ASR
On + click we can do show/hide of child records.
I m not getting how to achive this in SQL server report. Can u give some hint?
I have two tables that are related by keys. For instance,Table employee {last_name char(40) not null,first_name char(40) not null,department_name char(40) not null,age int not null,...}Employee table has a primary key (combination of last_name and first_name).Table address {last_name char(40) not null,first_name char(40) not null,street char(200) not null,city char(100) not null,...}Address table has a primary key (combination of last_name, first_name andstreet in which (last_name, first_name) reference (last_name, first_name) inemployee table.Now I want to delete some rows in Address table based on department_name inEmployee table. What is sql for this delete?I appreciate your help. Please ignore table design and I just use it for myproblem illustration.Jim
Request ID Parent ID Account Name Addresss 1452 1254789 Wendy's Atlanta Georgia 1453 1254789 Wendy's Norcross Georgia 1456 1254789 Waffle House Atlanta Georgia
I am in the process of creating a Report, and in this, i need ONLY the row groups (Parents and Child).I have a Parent group field called "Dept", and its corresponding field is MacID.I cannot create a child group or Column group (because that's not what i want).I am then inserting rows below MacID, and then i toggle the other rows to MacID and MacID to Dept.
1. to display all parent with ORDER BY ItemOrder (no need to sort by ItemDate) 2. display all child row right after their parent (ORDER BY ItemOrder if ItemDate are same, else ORDER BY ItemDate) 3. display all grand child row right after their parent (ORDER BY ItemOrder if ItemDate are same, else ORDER BY ItemDate)
Im trying to get the average Fuel Consumption for A Manufacturer that produces two or more cars, so far ive only been able to find all manufacturers Average Fuel consumption.
Heres what I have so far
Select aManufacturer.MName, avg(FuelCons) From aCar Join aBuilts On aBuilts.CName = aCar.CName Join aManufacturer On aBuilts.MName = aManufacturer.MName Group by aManufacturer.MName
This produces nearly all I want only I need to be able to get only the Manufacturers who produce two or more Cars, ive tried implementing a few Count statements but nothings working, any ideas?
I need to calculate average of each student and then get the highest.
My try:
Code: SELECT Students.StudentId,Students.StudentName,AVG(Grades.Grade) AS avg_grade FROM Students s JOIN Grades g ON Grades.StudentId =Students.StudentId GROUP BY Students.StudentId, Students.StudentName
ORDER BY avg_grade LIMIT 1 FROM Students;
I encounter problem with this code, maybe it's Completely wrong...
I am having tables with 12 columns as jan,feb,.......dec.
Now I want to calculate average salary for each record, but condition is that if any month salary is zero then that column also exclude from average calculation.
For example : if jan and feb column values are zero then i want to calculate (mar+apr+...+dec)/10.
Eg: I have productivity records of each day and each employee. I need to calculate avg of each last level employee productivity by monthly. Again Last level employee productivity avg must be added up with their immediate head. But, when I define a Measure Item as avg in the cube, it sums all the values of lost level employees & head and divides with number of records (normal avg).
My requirement is calculating each head avg by sum of each last level employee avgs / no of employees. If head having value, he too will be added. Again Head’s Avg will be added up immediate head.
The following calculation gives average value at each level.
Average of Level 3(E4) = > (4+3+7+6)/4 = 5 hrs/day< = (E6+E7+E8+E4)/4
Average of Level 2(E2) = > (5+3+5)/3= 4.333 < =avg(Level3(E4))+avg(Level3(E5)))/2
Average of Level 1(E1) = > (4.333+4+1)/3 = 3.111 < = avg(Level3(E2))+avg(Level3(E3)))/2
Formula for average of level : : (Sum of Children value + Head Value of Corresponding children) / (No.of Children +1)
I want to calculate average of each employee as well as average of each level in cube (SQL Server Analysis Services).
I am having trouble with calculating AVG in a matrix. I have done the subtotal but I would like to know how to calculate the Average. I would also like AVA below the Total.
Link : [URL] ....
I have also added an image oh how the matrix looks like.
hi, i have two tables i want the identity value of the parent table to be inserted into the chile table here is my code,but i don't know why it isn't working ! protected void Button1_Click(object sender, EventArgs e) { string connectionString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString; string pcontent = TextBox1.Text; string data = TextBox2.Text; addtopic(pcontent,connectionString); addfile(data, connectionString); } public void addtopic(string subject,string connstring) { using (SqlConnection connection = new SqlConnection(connstring)) { SqlCommand command = new SqlCommand("INSERT INTO parent" + "(content)" + "Values(@content)", connection); command.Parameters.Add("@content", SqlDbType.Text).Value = subject; connection.Open(); command.ExecuteNonQuery(); } } public void addchild(string name, string connstring) { using (SqlConnection connection = new SqlConnection(connstring)) {Guid id = Guid.NewGuid(); SqlCommand commandd = new SqlCommand("INSERT INTO child" + "(parentid,data,uniqueid)" + "Values(@@IDENTITY,@data,@uid)", connection); commandd.Parameters.Add("@data", SqlDbType.NVarChar, 50).Value = name; commandd.Parameters.Add("@uid", SqlDbType.UniqueIdentifier).Value = id;
I have a parent/child relationship in a relational database broken out like this: Table Name: categories[category_id] int (primary_key NOT NULL),[category_name] varchar(50),[parent_fk] int The parent references the category_id in the same table to create the parent/child relationships. I can get all the bottom level categories by doing this: select category_id, category, parent_fk from categories where category_id not in ( select parent_fk from categories) Each bottom-level category has a count attached to it. The problem I have is getting the counts rolled up for each parent of the bottom level. A parent could/will have multiple bottom-level categories (and counts). My sql is a little weak, could you help me out? I can utilize everying in SQL 2000 (stored proc, UDF, anything). Thanks!
I want to find all the child of a node in a tree . A child can have multiple parent i.e 2 can be place under multiple parent . The folling is the data:
This structure requires complicated queries (recursive call) to find out all the child of a root node, so I have added another field for the root id. Is this a good relational database design ? kindly suggest.
In our database we have a list of devices in a "Device" Table, eachhaving one or more IP's located in the "IP" Table linked through aforein key on the DeviceID Column.I would like to retrieve this information as SuchDeviceID IpAddress1 10.0.0.1, 10.0.0.2, 10.0.0.32 ...345etc.Is it possible to do that without using cursors? Through a query?
At the 2nd level, the calculated measure will only be correct if it is Averaged. And at the 1st level, the calculated measure will only be correct to take these Average value from 2nd level and Sum then up together.
Level 1 Level 2 A X1 X2 ================= (Avg of X1 + X2) B Y1 Y2 Y3 ================= (Avg of Y1 + Y2 + Y3) =================================================== (Sum of (Avg of X1 + X2) + (Avg of Y1 + Y2 + Y3) )
Currently, Instead of summing all the 3 averaged value, it is averaging against all the items like,
(Avg of X1 + X2 + Y1 + Y2 + Y3)
My MDX currently looks something like that
[Measure].[Value] / [Dimension].[Attribute.count] -> so i can get the avarage at the 2nd level but it doesn't require on the 1st level but retaining this value.
How can i do an average on the leaf level and using these average values to sum at parent level?
How you would calculate the average read/write latency experienced by a SQL Server instance during a specific time window in order to monitor this for multiple instances. From this MSDN blog, I know that you have to take multiple samples and do some calculations to get the correct latency.
[URL] ...
However, the SQLServer:Resource Pool Stats object tracks these numbers per resource pool and we want to get one number for the whole server. Since there can be a different base value for each resource pool, you can't simply sum the numerator values together. Here's some sample data from a server that illustrates the problem.
object_name counter_name instance_name cntr_value cntr_type SQLServer:Resource Pool Stats Avg Disk Read IO (ms) default 307318919 1073874176 SQLServer:Resource Pool Stats Avg Disk Read IO (ms) Base default 25546724 1073939712 SQLServer:Resource Pool Stats Avg Disk Read IO (ms) internal 2045730 1073874176 SQLServer:Resource Pool Stats Avg Disk Read IO (ms) Base internal 208270 1073939712
I'm thinking I would need to do some sort of weighted average, but I'm not sure if that will result in the correct value. Here's the formula I am thinking about using currently before doing the calculation over time
Hello all, I'm having a real hard time trying to figure this one out. I'm trying to create a sql query that selects both the parent name and it's children, but it's got to loop through all the record sets to populate a drop down as an end result.
I think I thought this out correctly: I have 2 tables
category relationship
tbl category cat_id //auto int cat_name // varchar
relationship r_id // auto int parent_id // int child_id // int
both the parent_id and child_id are associated with the cat_id in my category table I could have 1cars // this is parent 2 audi 3 bmw 4 chevy
Table data example
r_id parent_id child_id **************************** 1 1 15 2 1 16 3 1 17 4 2 55 5 2 56 etc... I want to select both the parent cat_name from category and also select the child cat_name where the parent_id = #
I can do it manaully like this select cat_name, cat_id, parent_id , child_id from category, relationships where child_id = cat_id and parent_id = 1
what is the best way to loop through all the parent ids to find child category? Could this be done in a stored procedure?
I am having problems creating a trigger in SQL Server? I have 2 tables (parent and child) with one to many relationship. When I save a record, one row gets inserted in the parent and one to many gets inserted in the child. The trigger is on the parent table and it is trying to select the number of new records just inserted in the child table that meets a certain criteria. Since the transaction hasn't been committed I can not select the number of records from the child. Does anyone know how to handle this? My manager insists this be done in a trigger. Thanks, James
William Smith, (555)555-5555, 123 Main Street, Susie, Peter, Bill Jr, Fred Jason Jones, (666)666-6666, 54332 South Ave, Brian, Steven Kay McPeak, (777)777-7777, 9876 Division NW, Kathy, Sally, Karen, Deb, Becky, Kendra, Ann, Edward
with an unknown number of children for each parent.
Then I would like to be able to query against this view with something like this:
SELECT * FROM FamilyView Where Child2 = 'Peter'
I have no idea how to write the SQL for this View. Is it possible? Is this possible without using a cursor?
