Questions tagged [group-by]
GROUP BY : SQL Aggregation for Common Values
0
votes
1answer
25 views
Having a subquery somehow do the same group by as the outer query
i'm pretty decent with SQL but it's not my main experience of expertise. A colleague asked me a stumper of a question the other day. I was wondering if you guys could provide assistance.
Basically we'...
1
vote
2answers
32 views
SQL queries to get the duplicate records based on trim
I have a table that has got the below set of records.
UNMASK MASK
123 897609
00123 896509
0000456 5632789
456 32567889
5678 5632789
From the above table I need to select only the below records....
0
votes
1answer
17 views
Summing Column values based on group by criteria
So I have this query
select *, TIMEDIFF(tbltimetracker.tt_endtime, tbltimetracker.tt_begintime)
as hours from tbltimetracker
LEFT JOIN tblcustomers
on tbltimetracker.customer_id = ...
2
votes
2answers
64 views
SQL Preserve the Order in group by
I have records like below in my table.
I want distinct records and when I do group by it loses the Order. I want to maintain the order. I have written below query to get the desired however its not ...
0
votes
2answers
71 views
How to group by week even when the count is 0
My below example works fine, the only challenge i am facing is that weeks with 0 results do not show. Here is a sample of my code:
My current output:
week | amount
4 | 354
6 | ...
0
votes
1answer
25 views
Another - ERROR: column “da2.dependency_device_name” must appear in the GROUP BY clause or be used in an aggregate function
I am attempting to aggregate dependency_device_name into one string, "Dependency List". Here is the error:
ERROR: column "da2.dependency_device_name" must appear in the GROUP
BY clause or be ...
1
vote
2answers
39 views
sqlite Json grouping json_each
I want to generate json grouping users by year.
I have got a "user" table in sqlite with the following columns:
date
name
surname
value
I would like to create a JSON with the following structure:
...
0
votes
0answers
39 views
SQL Server group by date, time between status
I have a table that looks like the following:
id_usr dt_event Sequence
0000001 2015-08-01 14:57:21.737 1
0000001 2015-08-06 15:34:21.920 2
0000001 ...
0
votes
1answer
33 views
Is MySQL syntax GROUP BY … ASC/DESC removed or not?
I would like to ask if MySQL syntax GROUP BY ... ASC/DESC was removed or not? By this worklog task it should be removed but it seems that it is not truth. There are no details in which version it was ...
0
votes
1answer
16 views
Getting total number of payments and percentage
I have a payments table with the following fields:
id (int)
status (successful, failed, refunded)
amount (int)
pdate (Y-m-d format)
I need to write a query to get, for each day how many payments ...
1
vote
0answers
40 views
MySQL Query Optimization Group By with Max [closed]
I have posted same question on at stackoverflow.com but I did not get any structural solution so I am trying to get answer on dba specific community.
Trying to optimise MySQL query which uses Group ...
0
votes
1answer
33 views
Calculate Count Distinct without grouped columns in Oracle
I am trying to extract a few records and I ran into the "not a single group" error. This error can be resolved by removing the (count(distinct dc.DUCT_FID)) as NO_OF_WAYS column expression. However, I ...
0
votes
1answer
33 views
Mysql Performance Issue with Group By/Order By
I am using Mysql 5.7 I have table which having 7006500 rows. My query performing group by and fetching row which has maximum count with each group on column which is already indexed but still takes ...
0
votes
2answers
38 views
How to optimize SQL query which involves GROUP_CONCAT function with ORDER BY
I wrote the following SQL query to group results and then sort results in each group by date:
SELECT
origin,
provider,
SUBSTRING_INDEX(GROUP_CONCAT(price
ORDER BY departure_date
...
2
votes
2answers
40 views
First order by importance then group by section
In this table scheme http://sqlfiddle.com/#!9/101a9c/9/0
id section rev importance
2 1 b 6
1 1 a 5
3 2 c 9
5 3 e 6
4 ...
0
votes
1answer
33 views
Last value in two levels of group by in MySQL
I have the following data set:
2018-01-02 Oranges 1479 1480
2018-01-03 Oranges 1478 1504
2018-01-04 Oranges 1507 1494
2018-01-05 Oranges 1510 1551
2018-01-02 Apples 2150 2196
...
2
votes
3answers
68 views
Identify proper index for group and order by date and hour (2 columns)
PostgreSQL 10.4
I have a table that has already an index on date column. Current query plan is doing a Bitmap Heap Scan using the existing date index. I would like to add a new index for this query, ...
0
votes
0answers
38 views
MySQL how to GROUP SUM based on JOIN TABLE
I have Three Table, One Master Table and Other Two Table have relation with it.
Below is the Three Table:
1. ball_by_ball table, this table holds full information by ball by ball:
CREATE TABLE `...
0
votes
2answers
33 views
For states (col) receiving exactly X number of items (row), sort the items by weight (col)
I have been trying to figure this out for a few hours now but haven't gotten it. Each row in the table is a package.
I am able to get the States with the exact number of packages, but don't know how ...
0
votes
1answer
37 views
Group json data in db using a query
I have a db whose values are as follows:img Can I call the json value of listing_id(23,27....so on) in properties column(with having row value as "listing") using a single query, I would Really ...
0
votes
1answer
38 views
Complex join 3 tables with sum and group by
I'm trying to generate a report for one of our departments that pulls data from 3 tables. The basic structure is below:
CREATE TABLE `evd_us_county_mio_2018q4` (
`state_code` INT(11) NULL DEFAULT ...
1
vote
1answer
22 views
Count Assets Barcodes and Group by Rooms
I have 2 tables Asset Register and LocationRoom. I want to count the number of asset barcodes in each room.
I want the output to be the list of Asset Barcodes, Description,RoomNo and count for ...
1
vote
1answer
35 views
How to correctly use group by for getting the record with the closest time for each rec_id
Background
I have a table records which stores rec_id, rec_time and rec_value. A record is stored for each rec_id only when its rec_value changes. I would like to query the value for a bunch of ...
1
vote
1answer
22 views
How to count more than one time with different conditions?
Having a table like this:
I want to get a result like this:
Something like:
SELECT ParentId, COUNT(SomeValue = 1) [CountMin], COUNT(SomeValue > 1) [CountRest]
FROM MyTable
GROUP BY ParentId
0
votes
1answer
44 views
Limit groups of results based on a column value
I'm not sure I formulated the question properly, but anyway.
I have a table with level-2 comments, some of which, expectedly, have the same comment_parent column value. How do I make a SELECT query ...
-1
votes
1answer
71 views
SPROC Gives error [closed]
Running this sproc on oracle gives error
Error report -
ORA-00937: not a single-group group function
ORA-06512: at "TEST_CON", line 4
ORA-06512: at line 1
00937. 00000 - "not a single-group group ...
0
votes
1answer
169 views
Why do I receive the error message “'<column name>' must appear in the GROUP BY clause or be used in an aggregate function”?
Where am I going wrong? Why am I getting that message when I add the MAX function?
The query involved:
WITH
references_cve AS (
SELECT vulnerability_id, reference
FROM ...
0
votes
0answers
34 views
“GROUP BY” to keep only the first 2 rows based on date
I have a list of online robots conversation, with the time indicating when a client started a conversation and when the robot answered.
I am trying to measure how long does the robot take to provide ...
1
vote
3answers
104 views
How to apply outer limit offset and filters in the subquery to avoid grouping over the complete table used in subquery in Postgresql
I have legacy tables similar to the following:
employee
------------------------------------
| employee_id | name
------------------------------------
| 1 | David
| 2 ...
2
votes
2answers
247 views
how to count distinct value per day with start time and end time
my title may seem a bit confusing but here's the context.
I have a table 1. It contains the reference code per connection to SSID with value of start time. Now I have a scenario wherein the user ...
2
votes
2answers
114 views
Sum up counts in subquery
I am writing a query to check if I have got duplicates in a certain column.
SELECT COUNT(thecol) FROM thetable WHERE thecol IS NOT NULL GROUP BY thecol
HAVING COUNT(*) > 1
That will give me an ...
0
votes
1answer
28 views
How to use case and filter with a group by statement and having an aggregate calculation?
I would like to do the following
SELECT
PO.col1,
PO.col2,
CASE
WHEN PO.col3 <> 8 THEN PO.col4
WHEN PO.col3 = 8
THEN CASE
WHEN (ROUND(CAST(...
0
votes
2answers
17 views
sum only different id's values with any aggreagte function in postgresql
I need your help. Let's assume that we have a table like below
+---------------+-------+--------+----------+
| barcode | shop | id | entrance |
+---------------+-------+--------+----------+...
0
votes
1answer
216 views
Using MATCH, AGAINST multiple times in MySQL fulltext search
I'm using MySQL database for my e-commerce project.
And here is my query for search:
SELECT DISTINCT p.id, p.name, p.price, p.created_at,
MATCH(p.name) AGAINST('Sony* xperia* FHD* ' IN BOOLEAN ...
1
vote
2answers
55 views
How to group same columns from same two tables, but from two different result sets and/or conditions
I am having troubles coming up with a query for something that should be quite simple.
Initially, I had two tables of data that I generated joint result sets from; an events table, and a groups table ...
0
votes
2answers
76 views
WHERE clause on a TIMESTAMP column causes serious performance penalty
I have a pages and a page_views tables with 100k~ & 4M~ records respectively.
I run a query to get the top pages that have the most page_views:
select `pages`.`id`, `pages`.`host`, `pages`.`...
1
vote
1answer
39 views
Order after rollup - oracle 11g
I am using rollup() function in group by expression to show the result query,
but my output like this:
Year Month AmountOfMoney
==== ===== =============
1998 March 130....
12
votes
1answer
453 views
Why is this stream aggregate necessary?
Check out this query. It's pretty simple (see the end of the post for table and index definitions, and a repro script):
SELECT MAX(Revision)
FROM dbo.TheOneders
WHERE Id = 1 AND 1 = (SELECT 1);
...
0
votes
1answer
40 views
Slow query with multiple group by
I have a query to get all the comments from threads where a given user has commented and not yet seen the comment. So if user 1 commented to a topic, then user 2 commented after his comment, then user ...
2
votes
1answer
81 views
Filter on value in another row
Please see image of the data and my code so far.
In this example I only want the first two rows to be retrieved. The reason for this is because where JobID is 1684 the sum of STILL_REQUIRED is > 0
...
0
votes
1answer
28 views
I have 2 queries with only one difference that I want to merge in just one query
I have two queries in MySQL that are basically the same, where the only difference between them is a min() or max(), I would like to know if it is feasible to join the two.
I believe that the ...
0
votes
1answer
24 views
How to generate missing values for each employee for each day
CREATE TABLE `EmpWorkCount` (
`emp_Id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`day` int(10) unsigned NOT NUL,
`created_At` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
`...
1
vote
2answers
42 views
count for missing values in group by
We have a user table :
CREATE TABLE `User` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(60) NOT NULL,
`created_At` datetime NOT NULL DEFAULT ...
1
vote
2answers
59 views
How to get average of lat/long from cities by county that they're in
I found this script but I'd like to get the average of the latitudes/longitudes so I can just have the latitude/longitude of the counties. I tried
SELECT id, CITY, COUNTY, LONGITUDE, LATITUDE, AVG(...
0
votes
1answer
73 views
Enforce known functional dependency in a group by clause
Let's consider I have the following tables:
CREATE TABLE users(
id serial PRIMARY KEY,
age integer
)
CREATE TABLE products(
id serial PRIMARY KEY,
sku ...
2
votes
0answers
114 views
How to write group by and having in a relational algebra interpreter?
I am practising writing relational algebra (RA) expressions in RA interpreter from Duke, but I can't figure out how to represent group by or having (from SQL). I have this expression, but I need to ...
0
votes
1answer
50 views
MS SQL rolling grouped sum for every new data entry
I am using MS SQL 2016, and I have a table which looks something like that (simplified)
Object Date Amount Owner TypeOwner
O1 20180101 10 A X
O2 ...
0
votes
1answer
29 views
MYSQL: How to select all attributes of all duplicate entries?
I have a database that containes user data and need to dig up only the entries where two attributes are duplicate between users (surname and social security number). I need all of the attributes for ...
1
vote
0answers
49 views
Select Rows within a Group based on a condition
CREATE TEMPORARY TABLE TempSlotUpdated (
slotId INT(10) NULL,
slotstarttime datetime NULL,
slotendtime datetime NULL,
totalTime time NULL);
CREATE TABLE `Apt` (
`...
2
votes
1answer
68 views
Build a histogram of road speed based on road length by grouping road segments
A data set look like this:
The table doesn't have sum(segLength yet), but can be computed by summing up sum(segLength) from road_table group by roadID
A roadID (e.i. Lake Street) belongs to a ...
