I am trying to make a query from a table in Access that would give me totals for different types of product based off of 2 categories, all within one query. For example my Table looks as follows:
Type
Description 1
Description 2
Date
New
Shiny
Black
1/1/2022
New
Black
Dull
1/1/2022
Old
Shiny
Grey
1/1/2022
Old
Grey
Dull
1/1/2022
The query results that I want to receive are as follows:
Description
New
Old
Shiny
1
1
Black
2
0
Dull
1
1
Grey
0
2
The dataset that I am working with isn't as clean as my example shown here and is causing some of the issues. I never had an issue with the code running, but I just felt that there had to be an easier way that I was missing.
They way I was doing it originally just turned into a bunch of separate query's and was messy to get around. I essentially wrote a query to separate the table into new and old types. From there I used a bunch of
SUM(IIF( Description 1 = "x" OR Description 2 = "x") AS X
SUM(IIF( Description 1 = "y" OR Description 2 = "y") AS Y
expressions to count my totals for each of the objects. This would give me a query where all the totals were displayed in columns. Then I created a separate query to join these data sets together into a presentable manner, but it was turning into too much for how many different "types" I had.
I was just looking for a way to combine all of this into 1 query that would make pulling reports much easier.
Strongly advise not to use space in naming convention nor reserved words as names. Date is a reserved word.
Consider:
Query1
SELECT Type, Description1 AS D, [Date], 1 AS Category FROM Table1
UNION SELECT Type, Description2, [Date], 2 FROM Table1;
UNION will not allow duplicate rows. Use UNION ALL to include all records, even if there are duplicates. There is no query designer or wizard for UNION - must type or copy/paste in SQLView of query builder.
Query2
TRANSFORM Nz(Count(Query1.Category),0) AS CountOfCategory
SELECT Query1.D
FROM Query1
GROUP BY Query1.D
PIVOT Query1.Type;
Related
I am pulling data and when I pull in the text field my results for the "distinct ID" are sometimes being duplicated when there are multiple results for that ID. Is there a way to concatenate the results into a single column/row rather than having them duplicated?
It looks like there are ways in other SQL platforms but I have not been able to find something that works in HANA.
Example
Select
Distinct ID
From Table1
If I pull only Distinct ID I get the following:
ID
1
2
3
4
However when I pull the following:
Example
Select
Distinct ID,Text
From Table1
I get something like
ID
Text
1
Dog
2
Cat
2
Dog
3
Fish
4
Bird
4
Horse
I am trying to Concat the Text field when there is more than 1 row for each ID.
What I need the results to be (Having a "break" between results so that they are on separate lines would be even better but at least a "," would work):
ID
Text
1
Dog
2
Cat,Dog
3
Fish
4
Bird,Horse
I see Kiran has just referred to another valid answer in the comment, but in your example this would work.
SELECT ID, STRING_AGG(Text, ',')
FROM TABLE1
GROUP BY ID;
You can replace the ',' with other characters, maybe a '\n' for a line break
I would caution against the approach to concatenate rows in this way, unless you know your data well. There is no effective limit to the rows and length of the string that you will generate, but HANA will have a limit on string length, so consider that.
What I am trying to do is fairly simple. I just want to add a row number to a query. Since this is in Access is a bit more difficult than other SQL, but under normal circumstances is still doable using solutions such as DCount or Select Count(*), example here: How to show row number in Access query like ROW_NUMBER in SQL or Access SQL how to make an increment in SELECT query
My Issue
My issue is I'm trying to add this counter to a multi-join query that orders by fields from numerous tables.
Troubleshooting
My code is a bit ridiculous (19 fields, seven of which are long expressions, from 9 different joined tables, and ordered by fields from 5 of those tables). To make things simple, I have an simplified example query below:
Example Query
SELECT DCount("*","Requests_T","[Requests_T].[RequestID]<=" & [Requests_T].[RequestID]) AS counter, Requests_T.RequestHardDeadline AS Deadline, Requests_T.RequestOverridePriority AS Priority, Requests_T.RequestUserGroup AS [User Group], Requests_T.RequestNbrUsers AS [Nbr of Users], Requests_T.RequestSubmissionDate AS [Submitted on], Requests_T.RequestID
FROM (((((((Requests_T
INNER JOIN ENUM_UserGroups_T ON ENUM_UserGroups_T.UserGroups = Requests_T.RequestUserGroup)
INNER JOIN ENUM_RequestNbrUsers_T ON ENUM_RequestNbrUsers_T.NbrUsers = Requests_T.RequestNbrUsers)
INNER JOIN ENUM_RequestPriority_T ON ENUM_RequestPriority_T.Priority = Requests_T.RequestOverridePriority)
ORDER BY Requests_T.RequestHardDeadline, ENUM_RequestPriority_T.DisplayOrder DESC , ENUM_UserGroups_T.DisplayOrder, ENUM_RequestNbrUsers_T.DisplayOrder DESC , Requests_T.RequestSubmissionDate;
If the code above is trying to select a field from a table not included, I apologize - just trust the field comes from somewhere (lol i.e. one of the other joins I excluded to simply the query). A great example of this is the .DisplayOrder fields used in the ORDER BY expression. These are fields from a table that simply determines the "priority" of an enum. Example: Requests_T.RequestOverridePriority displays to the user as an combobox option of "Low", "Med", "High". So in a table, I assign a numerical priority to these of "1", "2", and "3" to these options, respectively. Thus when ENUM_RequestPriority_T.DisplayOrder DESC is called in order by, all "High" priority requests will display above "Medium" and "Low". Same holds true for ENUM_UserGroups_T.DisplayOrder and ENUM_RequestNbrUsers_T.DisplayOrder.
I'd also prefer to NOT use DCOUNT due to efficiency, and rather do something like:
select count(*) from Requests_T where Requests_T.RequestID>=RequestID) as counter
Due to the "Order By" expression however, my 'counter' doesn't actually count my resulting rows sequentially since both of my examples are tied to the RequestID.
Example Results
Based on my actual query results, I've made an example result of the query above.
Counter Deadline Priority User_Group Nbr_of_Users Submitted_on RequestID
5 12/01/2016 High IT 2-4 01/01/2016 5
7 01/01/2017 Low IT 2-4 05/06/2016 8
10 Med IT 2-4 07/13/2016 11
15 Low IT 10+ 01/01/2016 16
8 Low IT 2-4 01/01/2016 9
2 Low IT 2-4 05/05/2016 2
The query is displaying my results in the proper order (those with the nearest deadline at the top, then those with the highest priority, then user group, then # of users, and finally, if all else is equal, it is sorted by submission date). However, my "Counter" values are completely wrong! The counter field should simply intriment +1 for each new row. Thus if displaying a single request on a form for a user, I could say
"You are number: Counter [associated to RequestID] in the
development queue."
Meanwhile my results:
Aren't sequential (notice the first four display sequentially, but then the final two rows don't)! Even though the final two rows are lower in priority than the records above them, they ended up with a lower Counter value simply because they had the lower RequestID.
They don't start at "1" and increment +1 for each new record.
Ideal Results
Thus my ideal result from above would be:
Counter Deadline Priority User_Group Nbr_of_Users Submitted_on RequestID
1 12/01/2016 High IT 2-4 01/01/2016 5
2 01/01/2017 Low IT 2-4 05/06/2016 8
3 Med IT 2-4 07/13/2016 11
4 Low IT 10+ 01/01/2016 16
5 Low IT 2-4 01/01/2016 9
6 Low IT 2-4 05/05/2016 2
I'm spoiled by PLSQL and other software where this would be automatic lol. This is driving me crazy! Any help would be greatly appreciated.
FYI - I'd prefer an SQL option over VBA if possible. VBA is very much welcomed and will definitely get an up vote and my huge thanks if it works, but I'd like to mark an SQL option as the answer.
Unfortuantely, MS Access doesn't have the very useful ROW_NUMBER() function like other clients do. So we are left to improvise.
Because your query is so complicated and MS Access does not support common table expressions, I recommend you follow a two step process. First, name that query you already wrote IntermediateQuery. Then, write a second query called FinalQuery that does the following:
SELECT i1.field_primarykey, i1.field2, ... , i1.field_x,
(SELECT field_primarykey FROM IntermediateQuery i2
WHERE t2.field_primarykey <= t1.field_primarykey) AS Counter
FROM IntermediateQuery i1
ORDER BY Counter
The unfortunate side effect of this is the more data your table returns, the longer it will take for the inline subquery to calculate. However, this is the only way you'll get your row numbers. It does depend on having a primary key in the table. In this particular case, it doesn't have to be an explicitly defined primary key, it just needs to be a field or combination of fields that is completely unique for each record.
I'm trying to create a query that will insert new records to a table or update already existing records, but I'm getting stuck on the filtering and grouping for the criteria I want.
I have two tables: tbl_PartInfo, and dbo_CUST_BOOK_LINE.
I'm want to select from dbo_CUST_BOOK_LINE based upon the combination of CUST_ORDER_ID, CUST_ORDER_LINE_NO, and REVISION_ID. Each customer order can have multiple lines, and each line can have multiple revision. I'm trying to select the unique combinations of each order and it's connected lines, but take the connected information for the row with the highest value in the revision column.
I want to insert/update from dbo_CUST_BOOK_LINE the following columns:
CUST_ORDER_ID
PART_ID
USER_ORDER_QTY
UNIT_PRICE
I want to insert/update them into tbl_PartInfo as the following columns respectively:
JobID
DrawingNumber
Quantity
UnitPrice
So if I have the following rows in dbo_CUST_BOOK_LINE (PART_ID omitted for example)
CUST_ORDER_ID CUST_ORDER_LINE_NO REVISION_ID USER_ORDER_QTY UNIT_PRICE
SCabc 1 1 0 100
SCabc 1 2 4 150
SCabc 1 3 4 125
SCabc 2 3 2 200
SCxyz 1 1 0 0
SCxyz 1 2 3 50
It would return
CUST_ORDER_ID CUST_ORDER_LINE_NO (REVISION_ID) USER_ORDER_QTY UNIT_PRICE
SCabc 1 3 4 125
SCabc 2 3 2 200
SCxyz 1 2 3 50
but with PART_ID included and without REVISION_ID
So far, my code is just for the inset portion as I was trying to get the correct records selected, but I keep getting duplicates of CUST_ORDER_ID and CUST_ORDER_LINE_NO.
INSERT INTO tbl_PartInfo ( JobID, DrawingNumber, Quantity, UnitPrice, ProductFamily, ProductCategory )
SELECT dbo_CUST_BOOK_LINE.CUST_ORDER_ID, dbo_CUST_BOOK_LINE.PART_ID, dbo_CUST_BOOK_LINE.USER_ORDER_QTY, dbo_CUST_BOOK_LINE.UNIT_PRICE, dbo_CUST_BOOK_LINE.CUST_ORDER_LINE_NO, Max(dbo_CUST_BOOK_LINE.REVISION_ID) AS MaxOfREVISION_ID
FROM dbo_CUST_BOOK_LINE, tbl_PartInfo
GROUP BY dbo_CUST_BOOK_LINE.CUST_ORDER_ID, dbo_CUST_BOOK_LINE.PART_ID, dbo_CUST_BOOK_LINE.USER_ORDER_QTY, dbo_CUST_BOOK_LINE.UNIT_PRICE, dbo_CUST_BOOK_LINE.CUST_ORDER_LINE_NO;
This has been far more complicated that anything I've done so far, so any help would be greatly appreciated. Sorry about the long column names, I didn't get to choose them.
I did some research and think I found a way to make it work, but I'm still testing it. Right now I'm using three queries, but it should be easily simplified into two when complete.
The first is an append query that takes the two columns I want to get distinct combo's from and selects them and using "group by," while also selecting max of the revision column. It appends them to another table that I'm using called tbl_TempDrop. This table is only being used right now to reduce the number of results before the next part.
The second is an update query that updates tbl_TempDrop to include all the other columns I wanted by setting the criteria equal to the three selected columns from the first query. This took an EXTREMELY long time to complete when I had 700,000 records to work with, hence the use of the tbl_TempDrop.
The third query is a basic append query that appends the rows of tbl_TempDrop to the end destination, tbl_PartInfo.
All that's left is to run all three in a row.
I didn't want to include the full details of any tables or queries yet until I ensure that it works as desired, and because some of the names are vague since I will be using this method for multiple query searches.
This website helped me a little to make sure I had the basic idea down. http://www.techonthenet.com/access/queries/max_query2_2007.php
Let me know if you see any flaws with the ideology!
I am trying to figure out the SQL for doing some relatively simple operations on sets of records in a table but I am stuck. Consider a table with multiple rows per item, all identified by a common key.
For example:
serial model color
XX1 A blue
XX2 A blue
XX3 A green
XX5 B red
XX6 B blue
XX1 B blue
What I would for example want to do is:
Assuming that all model A rows must have the same color, find the rows which dont. (for example, XX3 is green).
Assuming that a given serial number can only point to a single type of model, find out the rows which that does not occur (for example XX1 points both to A and B)
These are all simple logically things to do. To abstract it, I want to know how to group things by using a single key (or combination of keys) and then compare the values of those records.
Should I use a join on the same table? should i use some sort of array or similar?
thanks for your help
For 1:
SELECT model, color, COUNT(*) AS num FROM yourTable GROUP BY model, color;
This will give you a list of each model and each color for that model along with the count. So the output from your dataset would be:
model color num
A blue 2
A green 1
B red 1
B blue 2
From this output you can easily see what's incorrect and fix it using an UPDATE statement or do a blanket operation where you assign the most popular color to each model.
For 2:
SELECT serial, COUNT(*) AS num FROM yourTable GROUP BY serial HAVING num > 1
The output for this would be:
serial num
XX1 2
To address #1, I would use a self-join (a join on the same table, as you put it).
For example,
select *
from mytable
where serial in (select serial
from mytable
group by model, color
having count(*) = 1)
would find all the serial numbers that only exist in one color. I did not test this, but I hope you see what it does. The inner select finds all the records that only occur once, then the outer select shows all detail for those serials.
Of course, having said that, this is a poor table design. But I don't think that was your question. And I hope this was a made up example for a real situation. My concern would be that there is no reason to assume that the single occurrence is actually bad -- it could be that there are 10 records, all of which have a distinct color. This approach would tell you that all of them are wrong, and you would be unable to decide which was correct.
I am working on a pivot table query.
The schema is as follows
Sno, Name, District
The same name may appear in many districts eg take the sample data for example
1 Mike CA
2 Mike CA
3 Proctor JB
4 Luke MN
5 Luke MN
6 Mike CA
7 Mike LP
8 Proctor MN
9 Proctor JB
10 Proctor MN
11 Luke MN
As you see i have a set of 4 distinct districts (CA, JB, MN, LP). Now i wanted to get the pivot table generated for it by mapping the name against districts
Name CA JB MN LP
Mike 3 0 0 1
Proctor 0 2 2 0
Luke 0 0 3 0
i wrote the following query for this
select name,sum(if(District="CA",1,0)) as "CA",sum(if(District="JB",1,0)) as "JB",sum(if(District="MN",1,0)) as "MN",sum(if(District="LP",1,0)) as "LP" from district_details group by name
However there is a possibility that the districts may increase, in that case i will have to manually edit the query again and add the new district to it.
I want to know if there is a query which can dynamically take the names of distinct districts and run the above query. I know i can do it with a procedure and generating the script on the fly, is there any other method too?
I ask so because the output of the query "select distinct(districts) from district_details" will return me a single column having district name on each row, which i will like to be transposed to the column.
You simply cannot have a static SQL statement returning a variable number of columns. You need to build such statement each time the number of different districts changes. To do that, you execute first a
SELECT DISTINCT District FROM district_details;
This will give you the list of districts where there are details. You then build a SQL statement iterating over the previous result (pseudocode)
statement = "SELECT name "
For each row returned in d = SELECT DISTINCT District FROM district_details
statement = statement & ", SUM(IF(District=""" & d.District & """,1 ,0)) AS """ & d.District & """"
statement = statement & " FROM district_details GROUP BY name;"
And execute that query. You'll then need have to handle in your code the processing of the variable number of columns
a) "For each " is not supported in MySQL stored procedures.
b) Stored procedures cannot execute prepared statements from concatenated strings using so called dynamic SQL statements, nor can it return results with more than One distinct row.
c) Stored functions cannot execute dynamic SQL at all.
It is a nightmare to keep track of once you got a good idea and everyone seems to debunk it before they think "Why would anyone wanna..."
I hope you find your solution, I am still searching for mine.
The closes I got was
(excuse the pseudo code)
-> to stored procedure, build function that...
1) create temp table
2) load data to temp table from columns using your if statements
3) load the temp table out to INOUT or OUT parameters in a stored procedure as you would a table call... IF you can get it to return more than one row
Also another tip...
Store your districts as a table conventional style, load this and iterate by looping through the districts marked active to dynamically concatenate out a querystring that could be plain text for all the system cares
Then use;
prepare stmName from #yourqyerstring;
execute stmName;
deallocate prepare stmName;
(find much more on the stored procedures part of the mysql forum too)
to run a different set of districts every time, without having to re-design your original proc
Maybe it's easier in numerical form.
I work on plain text content in my tables and have nothing to sum, count or add up
The following assumes you want matches of distinct (name/district) pairs. I.e. Luke/CA and Duke/CA would yield two results:
SELECT name, District, count(District) AS count
FROM district_details
GROUP BY District, name
If this is not the case simply remove name from the GROUP BY clause.
Lastly, notice that I switched sum() for count() as you are trying to count all of the grouped rows rather than getting a summation of values.
Via comment by #cballou above, I was able to perform this sort of function which is not exactly what OP asked for but suited my similar situation, so adding it here to help those who come after.
Normal select statement:
SELECT d.id ID,
q.field field,
q.quota quota
FROM defaults d
JOIN quotas q ON d.id=q.default_id
Vertical results:
ID field quota
1 male 25
1 female 25
2 male 50
Select statement using group_concat:
SELECT d.id ID,
GROUP_CONCAT(q.fields SEPARATOR ",") fields,
GROUP_CONCAT(q.quotas SEPARATOR ",") quotas
FROM defaults d
JOIN quotas q ON d.id=q.default_id
Then I get comma-separated fields of "fields" and "quotas" which I can then easily process programmatically later.
Horizontal results:
ID fields quotas
1 male,female 25,25
2 male 50
Magic!