I am sorry if this is a duplicate question and please point me to the answer if it is.
Here is my situation:
I have an ASP.NET web forms site that uses SQL server database as its data source. The end user wants to print labels to a Zebra label printer. (Old printer Zebra 110XiIIIPlus-200dpi) I can install this printer on the end users system or it can run from the web server, doesn't matter it is a network printer.
I can retrieve the data from the database ok. My problem starts when I need to print. Lets say that I have four parts, p1 p2 p3 & p4. All the labels have the same format:
Job #, Mark #, Customer, Width(in), Length(in) (which all come from the SQL DB)
The only field that is pulled in query and not printed is the qty. Mark # is the part number (Don't know why it isn't just called part #). Now lets say that p1 has a qty of 12, p2 has a qty of 25, p3 has a qty 321, and p4 has a qty of 35.
When it prints I need to send 12 "copies" of the label for p1, 25 "copies" for p2, 321 "copies for p3, and 35 "copies" for p4.
How do I send 12 labels for p1 to be printed, then use the next record's data and send 24 labels etc. etc.?
I do not have any code for printing yet because i can not figure out how to do this!! Does anyone know of a way that I can do it.
I did find one article here on SO: Print a report Multiple times, (SSRS reporting services) but I am not sure how to make it work, if it even can) for what I need.
One last note I am using VB.Net in the code behind if it makes a difference.
Any help is very much appreciated!
I had to do the exact same thing, the solution I came up with was to loop though the select and union the same select by the number of items in the Quantity. By doing this you should get 12 rows for the P1 since that that is the quantity of boxes, all the data should be the same except for Page# that should auto increase by 1 until the end of the quantity.
Results would be something like:
Job# | Mark# | Quantity | Page
------------------------------
1 | P1 | 12 | 1
1 | P1 | 12 | 2
1 | P1 | 12 | 3
1 | P1 | 12 | 4
.....
1 | P1 | 12 | 12
Then you would group on Mark# and Page and Create a Page break between each instance of a group, this will make it so you get the number of pages based on the quantity.
Thanks to the help of SO user newGuy I was able to figure out how to do this. Here is the solution that I cam up with that works.
--Drop Temp tables if exists
If OBJECT_ID('tempdb..#Labels') Is Not Null Drop Table #Labels
If OBJECT_ID('tempdb..#Pieces') Is Not Null Drop Table #Pieces
--Declare variables
Declare #MarkNumber varchar(10)
Declare #Qty int
Declare #RowCount int = 0
Create Table #Labels
(
vjobnum varchar(12),
marknumber varchar(25),
customer varchar(25),
pwidth decimal(18,4),
plength decimal(18,4)
)
Create Table #Pieces
(
marknum varchar(25),
totqty int,
customer varchar(50),
jobnum varchar(12),
plength decimal(18,4),
pwidth decimal(18,4)
)
Insert Into #Pieces(marknum, totqty, customer, jobnum, plength, pwidth)
Select od.marknum, od.qty, oh.customer, oh.van_job_num, od.bbin, od.cbin From tbl_order_detail od Join tbl_order_head oh On oh.ordernum = od.ordernum Where od.ordernum = (Select Distinct ordernum From tbl_BearingBarRpt)
Set #RowCount = (Select COUNT(*) From #Pieces)
While #RowCount > 0 --Exists (Select marknum From #piecelabels)
Begin
Select #MarkNumber = (Select a.marknum From (Select ROW_NUMBER() OVER (Order By marknum) as RowNumbers, *From #Pieces) a Where a.RowNumbers = #RowCount)
Select #Qty = (Select totqty From #Pieces Where marknum = #MarkNumber)
While #Qty > 0
Begin
Insert Into #Labels(vjobnum, marknumber, customer, pwidth, plength)
Select pc.jobnum, pc.marknum, pc.customer, pwidth, plength
From #Pieces pc
Where pc.marknum = #MarkNumber
--Decrement the Qty counter
Set #Qty = #Qty - 1
End
Set #RowCount = #RowCount - 1
End
It may not be the best but it definitely works!
Related
I have a database with "num" table like this
user_id | number | unix_time
-----------------------------
123 2 xxxxxxxx
123 40 xxxxxxxx
123 24 xxxxxxxx
333 23 xxxxxxxx
333 67 xxxxxxxx
854 90 xxxxxxxx
I'd like to select the last 5 numbers inserted by each user_id, but I can't figure out how to do it.
I tried:
SELECT b.n, a.user_id
FROM num a
JOIN num b on a.user_id = b.user_id
WHERE (
SELECT COUNT(*)
FROM num b2
WHERE b2.n <= b.n
AND b2.user_id = b.user_id
) <= 5
I am adapting the answer from (sql query - how to apply limit within group by).
I use "2" instead of "5" to make the effect visible within your sample data.
Note that I used actual dates instead of your "xxxxxxxx", assuming that most likely you mean "most recent 5" when you write "last 5" and that only works for actual times.
select * from toy a
where a.ROWID IN
( SELECT b.ROWID FROM toy b
WHERE b.user_id = a.user_id
ORDER by unix_time DESC
LIMIT 2
) ;
How is it done:
make on-the-fly tables (i.e. the part within ())
one for each user_id, WHERE b.user_id = a.user_id
order each on-the-fly table separatly (that is the first trick),
by doing the ordering inside the ()
order chronologically backwards ORDER by unix_time DESC
limit to 5 (in the example 2) entries LIMIT 2
limit each on-the-fly table separatly (that is the second trick),
by doing the limiting inside the ()
select everything from the actual table, select * from toy,
but only select from the actual table those lines which occur in the total of all on-the-fly tables,
where a.ROWID IN (
introduce the distinguishing alias "a" for the total view of the table,
toy a
introduce the distinguishing alias "b" for the single-user_id view of the table,
toy b
By the way, here is the dump of what I used for testing
(it is a convenient way of making most of a MCVE):
BEGIN TRANSACTION;
CREATE TABLE toy (user_id int, number int, unix_time date);
INSERT INTO toy VALUES(123,2,'1970-01-01 05:33:20');
INSERT INTO toy VALUES(123,40,'1970-01-01 06:56:40');
INSERT INTO toy VALUES(123,24,'1970-01-01 08:20:00');
INSERT INTO toy VALUES(333,23,'1970-01-01 11:06:40');
INSERT INTO toy VALUES(333,67,'1970-01-01 12:30:00');
INSERT INTO toy VALUES(854,90,'1970-01-01 13:53:20');
COMMIT;
If you want to select last 5 records from the SQlite database then use query
SELECT * FROM table_name ORDER BY user_id DESC LIMIT 5;
Using this query you can select last n transactions...Hope I helped you
I have query that runs as part of a function which produces a one row table full of counts, and averages, and comma separated lists like this:
select
(select
count(*)
from vw_disp_details
where round = 2013
and rating = 1) applicants,
(select
count(*)
from vw_disp_details
where round = 2013
and rating = 1
and applied != 'yes') s_applicants,
(select
LISTAGG(discipline, ',')
WITHIN GROUP (ORDER BY discipline)
from (select discipline,
count(*) discipline_number
from vw_disp_details
where round = 2013
and rating = 1
group by discipline)) disciplines,
(select
LISTAGG(discipline_count, ',')
WITHIN GROUP (ORDER BY discipline)
from (select discipline,
count(*) discipline_count
from vw_disp_details
where round = 2013
and rating = 1
group by discipline)) disciplines_count,
(select
round(avg(util.getawardstocols(application_id,'1','AWARD_NAME')), 2)
from vw_disp_details
where round = 2013
and rating = 1) average_award_score,
(select
round(avg(age))
from vw_disp_details
where round = 2013
and rating = 1) average_age
from dual;
Except that instead of 6 main sub-queries there are 23.
This returns something like this (if it were a CSV):
applicants | s_applicants | disciplines | disciplines_count | average_award_score | average_age
107 | 67 | "speed,accuracy,strength" | 3 | 97 | 23
Now I am programmatically swapping out the "rating = 1" part of the where clauses for other expressions. They all work rather quickly except for the "rating = 1" one which takes about 90 seconds to run and that is because the rating column in the vw_disp_details view is itself compiled by a sub-query:
(SELECT score
FROM read r,
eval_criteria_lookup ecl
WHERE r.criteria_id = ecl.criteria_id
AND r.application_id = a.lgo_application_id
AND criteria_description = 'Overall Score'
AND type = 'ABC'
) reader_rank
So when the function runs this extra query seems to slow everything down dramatically.
My question is, is there a better (more efficient) way to run a query like this that is basically just a series of counts and averages, and how can I refactor to optimize the speed so that the rating = 1 query doesn't take 90 seconds to run.
You could choose to MATERIALIZE the vw_disp_details VIEW. That would pre-calculate the value of the rating column. There are various options for how up-to-date a materialized view is kept, you would probably want to use the ON COMMIT clause so that vw_disp_details is always correct.
Have a look at the official documentation and see if that would work for you.
http://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_6002.htm
Do all most of your queries in only one. Instead of doing:
select
(select (count(*) from my_tab) as count_all,
(select avg(age) from my_tab) as avg_age,
(select avg(mypkg.get_award(application_id) from my_tab) as_avg-app_id
from dual;
Just do:
select count(*), avg(age),avg(mypkg.get_award(application_id)) from my_tab;
And then, maybe you can do some union all for the other results. But this step all by itself should help.
I was able to solve this issue by doing two things: creating a new view that displayed only the results I needed, which gave me marginal gains in speed, and in that view moving the where clause of the sub-query that caused the lag into the where clause of the view and tacking on the result of the sub-query as column in the view. This still returns the same results thanks to the fact that there are always going to be records in the table the sub-query accessed for each row of the view query.
SELECT
a.application_id,
util.getstatus (a.application_id) status,
(SELECT score
FROM applicant_read ar,
eval_criteria_lookup ecl
WHERE ar.criteria_id = ecl.criteria_id
AND ar.application_id = a.application_id
AND criteria_description = 'Overall Score' //THESE TWO FIELDS
AND type = 'ABC' //ARE CRITERIA_ID = 15
) score
as.test_total test_total
FROM application a,
applicant_scores as
WHERE a.application_id = as.application_id(+);
Became
SELECT
a.application_id,
util.getstatus (a.application_id) status,
ar.score,
as.test_total test_total
FROM application a,
applicant_scores as,
applicant_read ar
WHERE a.application_id = as.application_id(+)
AND ar.application_id = a.application_id(+)
AND ar.criteria_id = 15;
I am creating a database for my Psych class and I am scoring a personality profile. I need to compare two test items and, if they match a condition, then copy into a separate table.
Example (pseudocode is between \)Sqlite3
INSERT INTO Scale
SELECT* FROM Questions
WHERE \\if Question 1 IS 'TRUE' AND Question 3 IS 'FALSE' THEN Copy this Question
and its response into the Scale table\\;
I have about 100 other questions that work like this. Sample format goes like this:
IF FirstQuestion IS value AND SecondQuestion IS value THEN
Copy both questions into the Scale TABLE.
---------- EDITED AFTER FIRST RESPONSE! EDITS FOLLOW-------------
Here is my TestItems table:
ItemID | ItemQuestion | ItemResponse
```````````````````````````````````````````````````
1 | Is the sky blue? | TRUE
2 | Are you a person? | TRUE
3 | 2 Plus 2 Equals Five | FALSE
What I want to do: If Question 1 is TRUE AND Question 3 is FALSE, then insert BOTH questions into the table 'Scale' (which is setup like TestItems). I tried this:
INSERT INTO Scale
SELECT * FROM TestItems
WHERE ((ItemID=1) AND (ItemResponse='TRUE'))
AND ((ItemID=3) AND (ItemResponse='FALSE'));
HOWEVER: The above INSERT copies neither.
The Resulting 'Scale' table should look like this:
ItemID | ItemQuestion | ItemResponse
```````````````````````````````````````````````````
1 | Is the sky blue? | TRUE
3 | 2 Plus 2 Equals Five | FALSE
There is nothing wrong with your query. You're just there:
INSERT INTO Scale
SELECT * FROM Questions
WHERE `Question 1` = 1 AND `Question 3` = 0;
Here 1 and 0 are values (in your first case, true and false). First of all you should ensure there are fields Question 1 and Question 3 in your Questions table. Secondly the column count as well as data types of Scale table should match Questions table. Otherwise you will have to do selectively choose the fields in your SELECT query.
Edit: To respond to your edit, I am not seeing an elegant solution. You could do this:
INSERT INTO Scale
SELECT * FROM TestItems WHERE ItemID = 1 AND ItemResponse = 'TRUE'
UNION
SELECT * FROM TestItems WHERE ItemID = 3 AND ItemResponse = 'FALSE'
WHERE (SELECT COUNT(*) FROM (
SELECT 1 FROM TestItems WHERE ItemID = 1 AND ItemResponse = 'TRUE'
UNION
SELECT * FROM TestItems WHERE ItemID = 3 AND ItemResponse = 'FALSE'
) AS t) >= 2
Your insert did not work because ItemID cant be both 1 and 3 at the same time. My solution gets the required records to be inserted into Scale table, but verifies both the record exists by checking the count. Additionally you could (should) do as below since this can be marginally more efficient (the above SQL was to clearly show the logic being used):
INSERT INTO Scale
SELECT * FROM TestItems WHERE ItemID = 1 AND ItemResponse = 'TRUE'
UNION
SELECT * FROM TestItems WHERE ItemID = 3 AND ItemResponse = 'FALSE'
WHERE (
SELECT COUNT(*)
FROM TestItems
WHERE ItemID = 1 AND ItemResponse = 'TRUE'
OR ItemID = 3 AND ItemResponse = 'FALSE'
) >= 2
[ASP .Net - Microsoft Visual Web Developer 2010]
Hi all,
I've problem with this code:
With MenuNavCatDataSource
Dim xReader As Data.IDataReader = .Select(DataSourceSelectArguments.Empty)
If xReader.Read Then
MenuNavCat1.Text = xReader.Item("MenuCategoryName")
MenuNavCat2.Text = xReader.Item("MenuCategoryName")
MenuNavCat3.Text = xReader.Item("MenuCategoryName")
MenuNavCat4.Text = xReader.Item("MenuCategoryName")
MenuNavCat5.Text = xReader.Item("MenuCategoryName")
End If
End With
I've 5 label and I want to parse the content of the label from the database. The database contains menus ordered from 1 to 5. And I want to show it on:
- 'MenuNavCat1' label, menu with order number 1 on database,
- 'MenuNavCat2' label, menu with order number 2 on database, and so on...
How to add where statement to the code, just like 'WHERE OrderNo = 1', and so on..?
Need your help guys..
Thank you so much.
EDIT
Here is the database:
Table MenuNavCategory
| Column Name | Data Type |
|-----------------------------|
| MenuNavCatID | int |
| CategoryName | varchar(20) |
| OrderNumber | int |
|-----------------------------|
And there is some value inserted to the table.
I want to show the 'CategoryName' onto some label.
For example:
lblCat1 | lblCat2 | lblCat3 | lblCat4
Then, using that xReader.Read, store the value on the database onto that label based on the OrderNumber...
The DataReader only reads one row of data at a time. If you have 5 labels then you should have 5 rows in your database. Then you iterate through each row using the DataReader and assign the labels:
With MenuNavCatDataSource
Dim xReader As Data.IDataReader = .Select(DataSourceSelectArguments.Empty)
'i is just a counter to keep track of what row we are on.
Dim i as integer = 1
If xReader.Read Then
Select Case i
Case 1 'First Row from DB.
MenuNavCat1.Text = xReader.Item("MenuCategoryName")
Case 2 'Second Row from DB... etc.
MenuNavCat2.Text = xReader.Item("MenuCategoryName")
Case 3
MenuNavCat3.Text = xReader.Item("MenuCategoryName")
Case 4
MenuNavCat4.Text = xReader.Item("MenuCategoryName")
Case 5
MenuNavCat5.Text = xReader.Item("MenuCategoryName")
x+=1
End If
End With
The above is just an example to try and explain how the DataReader works. I'd find another way to actually code it as the above relies on the rows in the database being in the correct order and is pretty ugly.
I have a complicated query that I just cant create. I'm thinking of doing it with JOIN's but don't know where to start. I'll just try to explain my problem as clearly as possible.
I am creating software that deals with compensations. Every compensation can have several links (like in a chain). Each link is basically a customer. So, I'll just tell you the table structures:
Customer
CustomerID | Name
Compensation
CompensationID | CustomerID | Date
Link
LinkID | CompensationID | CustomerID | Sequential
Now, the Sequential field increases with every link added. Let me demonstrate by filling the tables with some data:
CustomerID | Name
-----------+-----
0 | Foo
1 | Bar
2 | Baz
CompensationID | CustomerID | Date
---------------+------------+------
0 | 0 | 2-2-2010
1 | 1 | 2-3-2010
LinkID | CompensationID | CustomerID | Sequential
-------+----------------+------------+-----------
0 0 0 0
1 0 2 1
2 0 1 2
So no matter what the LinkID/CompensationID/CustomerID the Sequential always goes from 0 to N in the Links table (depending on how many links a compensation has).
Now here is the problem: I want to list all Compensation's whose Link's meet the following requirements:
Search in Links
CustomerID = A
Sequential = 0 (first link) AND Sequential = LAST (in this case 2)
List compensations
Here is what I got so far:
SELECT * FROM Compensation JOIN Link ON Compensation.ID = Link.CompensationID
WHERE Link.CustomerID=A AND Link.Sequential = 0 AND Link.Sequential=LAST
This is more or less pseudo SQL since I know Link.Sequential cant be 0 and another value at the same time, but I don't know how to do this.
Any help would be appreciated.
Thank you.
P.S.
Sorry for the big wall of text.
If subqueries in where statements work how I remember:
select *
from
Compensation
left join
Link
on Compensation.CompensationID = Link.CompensationID
where
Link.CustomerID = :A
AND (
Link.Sequential = 0
OR
Link.Sequential = (
select MAX(Sequential) from Link where Link.CustomerID = :A
)
)
Try
SELECT c.*
FROM Compensation c
JOIN (select CompensationID, MAX(Sequential) AS LastSeq FROM Link GROUP BY CompensationID) AS LastOnes ON c.ID = LastOnes.CompensationID
JOIN (select CompensationID FROM Link WHERE CustomerID=A AND Sequential=0) AS FirststOnes ON c.ID = FirststOnes.CompensationID
JOIN Link AS l on l.CompensationID=c.CompensationID AND l.CustomerID=A AND l.Sequential=LastOnes.LastSeq