I'm trying to come up with a stored procedure that takes multiple rows that are exactly identical, and combines them into one row while summing one column, which can then be run through more stored procedures based on the sum of that one column.
I've tried a GROUP BY statement, but that doesn't actually group the rows together, because if I run the table through another procedure it performs actions as if each row were not combined. Performing a SELECT * FROM mytable query shows that each row was not actually combined into one.
Is there any way to permanently combine multiple rows into one singular row?
To start, I've got a table like this:
+-------+-----+--------+---------+------+-----+-----------+
| RowID | pID | Name | Date | Code | QTY | Purchased |
+-------+-----+--------+---------+------+-----+-----------+
| 1 | 1 | bob | 9/29/20 | 123 | 1 | |
| 2 | 1 | bob | 8/10/20 | 456 | 1 | |
| 3 | 2 | rob | 9/15/20 | 123 | 1 | |
| 4 | 2 | rob | 9/15/20 | 123 | 1 | |
| 5 | 2 | rob | 9/15/20 | 123 | 1 | |
| 6 | 2 | rob | 9/15/20 | 123 | 1 | |
| 7 | 2 | rob | 9/15/20 | 123 | 1 | |
| 8 | 3 | john | 7/12/20 | 987 | 1 | |
| 9 | 3 | john | 7/12/20 | 987 | 1 | |
| 10 | 4 | george | 9/12/20 | 684 | 1 | |
| 11 | 5 | paul | 2/2/20 | 454 | 1 | |
| 12 | 6 | amy | 1/12/20 | 252 | 1 | |
| 13 | 7 | susan | 5/30/20 | 131 | 1 | |
| 14 | 7 | susan | 6/6/20 | 252 | 1 | |
| 15 | 7 | susan | 5/30/20 | 131 | 1 | |
+-------+-----+--------+---------+------+-----+-----------+
By the end, i'd like to have a table like this:
+-------+-----+--------+---------+------+-----+-----------+
| RowID | pID | Name | Date | Code | QTY | Purchased |
+-------+-----+--------+---------+------+-----+-----------+
| 1 | 1 | bob | 9/29/20 | 123 | 1 | |
| 2 | 1 | bob | 8/10/20 | 456 | 1 | |
| 3 | 2 | rob | 9/15/20 | 123 | 5 | |
| 4 | 3 | john | 7/12/20 | 987 | 2 | |
| 5 | 4 | george | 9/12/20 | 684 | 1 | |
| 6 | 5 | paul | 2/2/20 | 454 | 1 | |
| 7 | 6 | amy | 1/12/20 | 252 | 1 | |
| 8 | 7 | susan | 5/30/20 | 131 | 2 | |
| 9 | 7 | susan | 6/6/20 | 252 | 1 | |
+-------+-----+--------+---------+------+-----+-----------+
Where exactly identical rows are combined into one row, and the QTY field is summed, that I can then add purchases to, or make deductions from the quantity as a total. Using GROUP BY statements can achieve this, but when I go to alter the quantity or add purchases to each person, it treats it like the first table, as if nothing was actually grouped.
So you have this table:
| RowID | pID | Name | Date | Code | QTY | Purchased |
+-------+-----+--------+---------+------+-----+-----------+
| 1 | 1 | bob | 9/29/20 | 123 | 1 | |
| 2 | 1 | bob | 8/10/20 | 456 | 1 | |
| 3 | 2 | rob | 9/15/20 | 123 | 1 | |
| 4 | 2 | rob | 9/15/20 | 123 | 1 | |
| 5 | 2 | rob | 9/15/20 | 123 | 1 | |
| 6 | 2 | rob | 9/15/20 | 123 | 1 | |
| 7 | 2 | rob | 9/15/20 | 123 | 1 | |
| 8 | 3 | john | 7/12/20 | 987 | 1 | |
| 9 | 3 | john | 7/12/20 | 987 | 1 | |
| 10 | 4 | george | 9/12/20 | 684 | 1 | |
| 11 | 5 | paul | 2/2/20 | 454 | 1 | |
| 12 | 6 | amy | 1/12/20 | 252 | 1 | |
| 13 | 7 | susan | 5/30/20 | 131 | 1 | |
| 14 | 7 | susan | 6/6/20 | 252 | 1 | |
| 15 | 7 | susan | 5/30/20 | 131 | 1 | |
The best way, as has been suggested, is to create a new table with the content of your query, then to rename the old table, and the new table to the original table's name, to check if everything is all right, and to drop the original table if yes.
CREATE TABLE indata_new AS
WITH grp AS (
SELECT
MIN(rowid) AS orowid
, pid
, name
, MAX(date) AS date
, code
, SUM(qty) AS qty
FROM indata
GROUP BY
pid
, name
, code
)
SELECT
ROW_NUMBER() OVER(ORDER BY orowid ASC) AS rowid
, *
FROM grp;
ALTER TABLE indata RENAME TO indata_old;
ALTER TABLE indata_new RENAME TO indata;
-- if "indata" now contains the data you want ...
SELECT * FROM indata;
-- out rowid | orowid | pid | name | date | code | qty
-- out -------+--------+-----+--------+------------+------+-----
-- out 1 | 1 | 1 | bob | 2020-09-29 | 123 | 1
-- out 2 | 2 | 1 | bob | 2020-08-10 | 456 | 1
-- out 3 | 3 | 2 | rob | 2020-09-15 | 123 | 5
-- out 4 | 8 | 3 | john | 2020-07-12 | 987 | 2
-- out 5 | 10 | 4 | george | 2020-09-12 | 684 | 1
-- out 6 | 11 | 5 | paul | 2020-02-02 | 454 | 1
-- out 7 | 12 | 6 | amy | 2020-01-12 | 252 | 1
-- out 8 | 13 | 7 | susan | 2020-05-30 | 131 | 2
-- out 9 | 14 | 7 | susan | 2020-06-06 | 252 | 1
-- you can ...
DROP TABLE indata_old;
I have a table like this and i want to output without duplication of the same user. If i use group by it shows only one record on the same column. iam also using left join for location and user name. A little help
+------+---------+----------+---------+
| user | work id | location | time |
+------+---------+----------+---------+
| 1 | 42 | 1 | 2hr |
| 1 | 42 | 1 | 10min |
| 1 | 42 | 1 | 30min |
| 2 | 42 | 1 | 4hr |
| 2 | 42 | 1 | 2.30min |
| 1 | 50 | 2 | 4min |
| 1 | 50 | 2 | 5min |
| 2 | 20 | 3 | 3hr |
| 1 | 20 | 3 | 6hr |
+------+---------+----------+---------+
Iam looking for this
+------+---------+----------+
| user | work id | location |
+------+---------+----------+
| 1 | 42 | 1 |
| 1 | 50 | 2 |
| 1 | 20 | 3 |
| 2 | 42 | 1 |
| 2 | 20 | 3 |
+------+---------+----------+
You simply need a distinct clause here -
SELECT DISTINCT user
,workid
,location
FROM YOUR_TABLE
ORDER BY user
,location
I have three tables :
em_employee :
emp_number | emp_firstname |
+------------+---------------+
| 1 | Vikram |
| 2 | S. |
| 3 | Gopal |
| 4 | Vaishnavi |
| 5 | Srinivasan |
| 6 | Saravanan
em_project
+------------+------------------------------+
| project_id | name |
+------------+------------------------------+
| 339 | MoneyGram |
| 340 | SERVICE LINE HEAD COMPLIANCE |
| 341 | SERVICE LINE HEAD ANALYTICS |
| 342 | GSI |
| 343 | Tandem |
| 344 | Master Card |
+------------+------------------------------+
em_project_employee:
+------------+------------+
| emp_number | project_id |
+------------+------------+
| 1 | 339 |
| 2 | 340 |
| 3 | 341 |
| 4 | 342 |
| 1 | 343 |
| 6 | 344 |
| 2 | 342 |
+------------+------------+
And I want Output like :
+------------+----------------------------------+
| emp_number | name |
+------------+----------------------------------+
| 1 | MoneyGram , Tandem |
| 2 | SERVICE LINE HEAD COMPLIANCE,GSI |
| 3 | SERVICE LINE HEAD ANALYTICS |
| 4 | GSI |
| 6 | Master Card |
+------------+----------------------------------+
I have tried it with GROUP_CONCAT, but something going wrong. Please help me on this.
Try this query, it produes that output:
SELECT emp_number, GROUP_CONCAT(name) FROM em_project p
INNER JOIN em_project_employee em ON p.project_id = em.project_id
GROUP BY emp_number;
The order of the data will e slightly different from what's in your desired output. If the ordering is important.
GROUP_CONCAT(name ORDER BY p.project_id)
good morning. I have this table:
mysql> select * from Data;
+---------------------------+--------+-------+
| affyId | exptId | level |
+---------------------------+--------+-------+
| 31315_at | 3 | 250 |
| 31324_at | 3 | 91 |
| 31325_at | 1 | 191 |
| 31325_at | 2 | 101 |
| 31325_at | 4 | 51 |
| 31325_at | 5 | 71 |
| 31325_at | 6 | 31 |
| 31356_at | 3 | 91 |
| 31362_at | 3 | 260 |
| 31510_s_at | 3 | 257 |
| 5321_at | 4 | 90 |
| 5322_at | 4 | 90 |
| 5323_at | 4 | 90 |
| 5324_at | 3 | 57 |
| 5324_at | 4 | 90 |
| 5325_at | 4 | 90 |
| AFFX-BioB-3_at | 3 | 97 |
| AFFX-BioB-5_at | 3 | 20 |
| AFFX-BioB-M_at | 3 | 20 |
| AFFX-BioB-M_at | 5 | 214 |
| AFFX-BioB-M_at | 7 | 20 |
| AFFX-BioB-M_at | 8 | 40 |
| AFFX-BioB-M_at | 9 | 20 |
| AFFX-HSAC07/X00351_M_at | 3 | 86 |
| AFFX-HUMBAPDH/M33197_3_st | 3 | 277 |
| AFFX-HUMTFFR/M11507_at | 3 | 90 |
| AFFX-M27830_3_at | 3 | 271 |
| AFFX-MurIL10_at | 3 | 8 |
| AFFX-MurIL10_at | 5 | 8 |
| AFFX-MurIL10_at | 6 | 4 |
| AFFX-MurIL2_at | 3 | 20 |
| AFFX-MurIL4_at | 5 | 78 |
| AFFX-MurIL4_at | 6 | 20 |
| U95-32123_at | 1 | 128 |
| U95-32123_at | 2 | 128 |
| U98-40474_at | 1 | 57 |
| U98-40474_at | 2 | 57 |
+---------------------------+--------+-------+
37 rows in set (0.00 sec)
If I wanna look for the average expression level (level) of each array probe (affyId) across all experiments, I do SELECT affyId, AVG(level) AS average FROM Data GROUP BY affyId;
However, I can't figure out how to look for the average expression level of each array probe (affyId) for each experiment... It must be something similar to the last query, but I don't obtain good results... any help?
PD: someone told me I should give some reputation or click to some green button if somebody solves my question... Is it right? How do I do it? I'm pretty new on this website...
This shows the average for every affyId:
SELECT affyId, AVG(level) AS average FROM Data GROUP BY affyId
This the average for every exptId:
SELECT exptId, AVG(level) AS average FROM Data GROUP BY exptId
and this the average for every exptId in every affyId:
SELECT affyId, exptId, AVG(level) AS average FROM Data GROUP BY exptId, affyId
Just add that to the group by clause
SELECT affyId, exptId, AVG(level) AS average
FROM Data
GROUP BY affyId, exptId;
I wrote this query to find the list of shops selling what categories.
SELECT GROUP_CONCAT(distinct(sub_category_id)) AS s,
vendor_id AS v
FROM link_products_lists_vendors
GROUP BY vendor_id;
This results in,
+---------------------------------------+------------+
| category_ids | vendor_ids |
+---------------------------------------+------------+
| 24,28,25,16,26,23,27,2 | 3 |
| 2 | 67 |
| 19,28,17,16,20,2 | 68 |
| 19,28,24,26,23,21,16,27,22,17,25,2 | 122 |
| 16,2 | 123 |
| 28,17,22,21,18,16,26,27,20,23,25,2 | 124 |
| 22,19,21,20,16,24,28,25,23,26,2 | 125 |
| 23,24,26,25,28,16,20,27,19,2 | 126 |
| 19,26,28,18,20,27,22,16 | 127 |
| 22,26,28,21,23,20,24,19,16,17,27,25,2 | 128 |
| 2 | 129 |
| 2 | 133 |
| 19,20,28,16,27,25,21,23,26,24,22 | 135 |
| 23,28,17,22,26,21,16,20,27,24,25,2 | 136 |
| 19,17,16,21,23,26,22,25,27,20,28 | 137 |
| 19,20,26,22,21,24,23,17,28,16,27,25,2 | 138 |
| 19,20,23,28,26,21,24,16,27,22,25,17,2 | 139 |
| 22,27,20,21,24,17,23,28,26,19,25,2 | 142 |
| 19,28,17,20,2 | 143 |
+---------------------------------------+------------+
19 rows in set (0.01 sec)
What I want now is something like,
+-------------------------- -----------+--- ----------+
| category_names | vendor_names |
+---------------------------------------+--------------+
| mobiles,laptops,desktops | abcShop |
| mobiles | xyzShop |
| desktops,mouses,keyboards | pqrShop |
+---------------------------------------+--------------+
I have the categories table as,
+----+---------------+
| id | name |
+----+---------------+
| 17 | desktops |
| 18 | external_hdds |
| 26 | headphones |
| 27 | headsets |
| 22 | keyboards |
| 16 | laptops |
| 24 | memory_cards |
| 2 | mobile-phones |
| 21 | mouses |
| 25 | pendrives |
| 19 | printers |
| 20 | routers |
| 23 | speakers |
| 28 | tablets |
+----+---------------+
Vendors table as,
+-----+----------------------+
| id | name |
+-----+----------------------+
| 108 | abcShop |
| 109 | xyzShop |
| 45 | pqrShop |
| 89 | . |
| 63 | . |
| 64 | . |
+-----+----------------------+
How should I write a query that will not display ids but use the table that displays ids and displays names? I have no clue from where to start this. Please help!
Just join in the other tables and select those values instead
SELECT GROUP_CONCAT(distinct(c.name)) AS s,
v.name AS v
FROM link_products_lists_vendors l
JOIN categories c on l.category_id = c.id
JOIN vendors v on l.vendor_id = v.id
GROUP BY v.name;
This works as long as vendor names and description names are unique.