I'm curious if is that possible to do similar query using CTE (the values of "id" may vary, not necessarily in succession)
SELECT
elt((#mxId := if(#mxId + 1 <= 3, #mxId + 1, 1)), 5, 10, 22, 33) val,
id
FROM my_table
INNER JOIN (SELECT #mxId := 0) tmp;
Expected output:
val | id
-----+----
5 | 1
10 | 2
22 | 3
5 | 4
10 | 5
22 | 6
5 | 7
10 | 8
22 | 9
5 | 10
10 | 11
22 | 12
5 | 13
10 | 14
22 | 15
5 | 16
10 | 17
22 | 18
5 | 19
10 | 20
with my_table_numbered as (
select ((row_number() over ())-1)%3 as rn_mod, id from my_table
)
select elt(rn_mod+1, 5, 10, 22, 33) as val, id
from my_table_numbered;
Output:
+------+----+
| val | id |
+------+----+
| 5 | 1 |
| 10 | 2 |
| 22 | 3 |
| 5 | 4 |
| 10 | 6 |
| 22 | 7 |
| 5 | 8 |
| 10 | 9 |
| 22 | 13 |
| 5 | 14 |
| 10 | 15 |
| 22 | 16 |
+------+----+
You should specify an ORDER BY in the CTE to get a meaningful and reliable row numbering, but you didn't have one in the query in your question.
row_number() OVER ()
that's do the magic - Thanks very much
Related
I have two tables:
1. SELECT * FROM gas_trades_bids;
+----+---------+----------+--------+------------+------------+
| id | user_id | claim_id | amount | lots_value | timestmp |
+----+---------+----------+--------+------------+------------+
| 5 | 9 | 11 | 60 | NULL | 1571317861 |
| 6 | 9 | 11 | 100 | NULL | 1571656888 |
| 7 | 9 | 11 | 50 | NULL | 1571727353 |
| 8 | 9 | 11 | 50 | NULL | 1571918296 |
+----+---------+----------+--------+------------+------------+
4 rows in set (0.00 sec)
2. SELECT * FROM gas_trades_offers;
+----+---------+----------+--------+------------+----------+------------+
| id | user_id | claim_id | amount | lots_value | accepted | timestmp |
+----+---------+----------+--------+------------+----------+------------+
| 8 | 9 | 11 | 33 | 22 | NULL | 1571918576 |
| 9 | 9 | 11 | 33 | 22 | 1 | 1571918576 |
| 10 | 9 | 11 | 33 | 22 | 1 | 1571918576 |
+----+---------+----------+--------+------------+----------+------------+
3 rows in set (0.01 sec)
The goals are:
Count the amount of the rows where gas_trades_bids.claim_id = gas_trades_offers_claim_id and gas_trades_bids.claim_id = 11 and gas_trades_bids.user_id = 11
Get the sum of the column gas_trades_offers.lots_value values
To reach this I tried to run:
SELECT COUNT(bids.id) amount, SUM(offers.lots_value)
FROM gas_trades_offers offers, (SELECT * FROM gas_trades_bids) bids
WHERE bids.user_id = 9
AND bids.user_id = offers.user_id
But I've got the multiple rows:'
+--------+------------------------+
| amount | SUM(offers.lots_value) |
+--------+------------------------+
| 3 | 66 |
| 3 | 66 |
| 3 | 66 |
| 3 | 66 |
+--------+------------------------+
4 rows in set (0.01 sec)
What do I do in the wrong way?
I have expected to get only:
+--------+------------------------+
| amount | SUM(offers.lots_value) |
+--------+------------------------+
| 3 | 66 |
+--------|------------------------|
I don't need to use GROUP BY!
Is it exactly what you need? Hope that this query can work well.
SELECT COUNT(offers.id) amount,
SUM(offers.lots_value)
FROM gas_trades_offers offers
WHERE offers.user_id = 9 and offers.claim_id = 11
AND exists (SELECT id FROM gas_trades_bids bids WHERE bids.claim_id = offers.claim_id and bids.user_id = offers.user_id)
Try this:
SELECT COUNT(bids.id) amount,
SUM(offers.lots_value)
FROM gas_trades_offers offers
JOIN gas_trade_bids bids ON bids.user_id = offers.user_id
WHERE offers.user_id = 9;
I am trying to create an query that results in unique identifiers (account number).
What I need to achieve is for each unique entry into Col1 to create a another row number / UI.
I have been attempting this with the below query
elect col1,col2 ,(DENSE_RANK() OVER( ORDER BY col1,col2)) as UI from [TABLE]
and this is what i have been getting:
col1 col2 UI
34 1 1
1973 448 2
355 3924 3
18709 8168 4
5201 9211 5
5762 9294 6
3864 10669 7
4914 12568 8
4914 12569 9
42465 921 10
but i need it to look like this:
col1 col2 UI
34 1 1
1973 448 2
355 3924 3
18709 8168 4
5201 9211 5
5762 9294 6
3864 10669 7
4914 12568 8
4914 12569 8
42465 921 9
You need to define a way to - more loosely - rank col2 e.g. using division
select
col1,col2
,DENSE_RANK() OVER( ORDER BY col1,col2/10) as newUI
from mytable
+----+-------+-------+-------+
| | col1 | col2 | newUI |
+----+-------+-------+-------+
| 1 | 34 | 1 | 1 |
| 2 | 355 | 3924 | 2 |
| 3 | 1973 | 448 | 3 |
| 4 | 3864 | 10669 | 4 |
| 5 | 4914 | 12568 | 5 |
| 6 | 4914 | 12569 | 5 |
| 7 | 5201 | 9211 | 6 |
| 8 | 5762 | 9294 | 7 |
| 9 | 18709 | 8168 | 8 |
| 10 | 42465 | 921 | 9 |
+----+-------+-------+-------+
I am trying to extract data from tables with the results from a previous search. I am not really familiar with database query's and have made one that will crash my computer from drawing too much memory.
This data is coming from a board tester and I want certain information.
How many boards were ran during a given period
How many failed
All the failure data for those boards EDIT: This is the one I need to figure out. See Edit at bottom.
The first time a board is ran it creates a record in the Board table
+----------+-------+-----+
| Board_id | Board | rev |
+----------+-------+-----+
| 1 | 1234 | 1 |
| 2 | 1234 | 1 |
| 3 | 1235 | 2 |
| 4 | 5869 | 15 |
+----------+-------+-----+
Each time the board is ran it creates a Test record
+----------+----------+---------+---------------------+
| Test_id | Board_id | Operator| Date_Time |
+----------+----------+---------+---------------------+
| 34 | 1 | 1 | 2017-08-02 09:13:34 |
| 35 | 1 | 1 | 2017-08-02 09:13:36 |
| 36 | 1 | 1 | 2017-08-02 09:13:39 |
| 37 | 2 | 1 | 2017-08-02 09:14:10 |
| 38 | 3 | 1 | 2017-08-02 09:16:24 |
| 39 | 3 | 2 | 2017-08-03 10:40:45 |
| 40 | 4 | 2 | 2017-08-03 10:43:34 |
+----------+----------+---------+---------------------+
...and Results are stored in Results
+-----------+---------+--------+-------------+-------------+
| Result_id | Test_id | Result | Upper_Limit | Lower_Limit |
+-----------+---------+----------------------+-------------+
| 40 | 34 | 2 | 4 | 1 |
| 41 | 34 | 3 | 4 | 1 |
| 42 | 34 | 4 | 4 | 1 |
| 43 | 34 | 0 | 4 | 1 |
| 44 | 35 | 2 | 4 | 1 |
| 45 | 35 | 3 | 4 | 1 |
| 46 | 35 | 4 | 4 | 1 |
| 47 | 35 | 0 | 4 | 1 |
| 48 | 36 | 2 | 4 | 1 |
| 49 | 36 | 3 | 4 | 1 |
| 50 | 36 | 4 | 4 | 1 |
| 51 | 36 | 2 | 4 | 1 |
| 52 | 37 | 2 | 4 | 1 |
| 53 | 37 | 3 | 4 | 1 |
| 54 | 37 | 4 | 4 | 1 |
| 55 | 37 | 2 | 4 | 1 |
| 56 | 38 | 2 | 4 | 1 |
| 57 | 38 | 3 | 4 | 1 |
| 58 | 38 | 4 | 4 | 1 |
| 59 | 38 | 5 | 4 | 1 |
| 60 | 39 | 2 | 4 | 1 |
| 61 | 39 | 3 | 4 | 1 |
| 62 | 39 | 4 | 4 | 1 |
| 63 | 39 | 5 | 4 | 1 |
| 64 | 40 | 2 | 4 | 1 |
| 65 | 40 | 3 | 4 | 1 |
| 66 | 40 | 4 | 4 | 1 |
| 67 | 40 | 3 | 4 | 1 |
+-----------+---------+--------+-------------+-------------+
To get the number of boards, and Board_ID, ran during a given period I query.
SELECT a.Board_ID FROM
Tests a, Results b
WHERE a.Date_Time>='2017-08-02' AND a.Date_Time<'2017-08-03' and
a.Test_ID = b.Test_ID
group by a.Board_ID
To get all associated test to those Board_ID's I query.
SELECT * from
Tests x, (
SELECT a.Board_ID FROM
Tests a, Results b
WHERE a.Date_Time>='2017-08-02' AND a.Date_Time<'2017-08-03' and
a.Test_ID = b.Test_ID
group by a.Board_ID
) y
where x.Board_ID = y.Board_ID
This gives me the correct results, but the query seems off, but when I try to get the failed results from the query above is when I have the most trouble.
SELECT d.Test_ID FROM
Boards a, Tests b, (
SELECT x.Test_ID, x.Board_ID, x.Operator, x.Date_Time from
Tests x, (
SELECT a.Board_ID FROM
Tests a, Results b
WHERE a.Date_Time>='2017-08-02' AND a.Date_Time<'2017-08-03' and
a.Test_ID = b.Test_ID
group by a.Board_ID
) y
)d
WHERE d.Test_ID = b.Test_ID and
b.Result not between Lower_Limit and Upper_Limit
EDIT:
If you look at the Test table I created you will see that board_id 3 got tested twice and on two different days. I need to see the boards that we ran on a given day, this example 2017-08-02, and all associated records to those boards. So since Board_ID #3 was ran on 2 days, and was ran on the day in question, I would need that record included in my query.
My Solution
SELECT * FROM
(
SELECT x.Test_ID, x.Board_ID, x.Operator, x.Date_Time from
Test x, (
SELECT a.Board_ID FROM
Test a
join Results b on a.Test_ID = b.Test_ID
WHERE a.Date_Time>='2017-08-11' AND a.Date_Time<'2017-08-12'
group by a.Board_ID
) y
where x.Board_ID = y.Board_ID
)d
join Boards a on a.Board_ID = d.Board_ID
join Results b on b.Test_ID = d.Test_ID
join Test_Names c on c.Test_Name_ID = b.Test_Name_ID --Table Not shown
WHERE
b.result not between Lower_Limit and Upper_Limit
From this you see I have 3 nested searches into 1. With the 3 individual searches I get all the data I need to parse the information I want. Next will be to find a way to query the database for what I need instead of parsing.
I think you're overthinking this. You don't need all the inline views. Here's how I would write it using ANSI Joins (like #CptMisery suggested in the comments)
SELECT d.test_id, b.board, b.board_rev, r.result_id, r.result -- and whatever else you need.
from tests t
join results r on t.test_id = r.test_id
join boards b on t.board_id = b.board_id
where t.Date_Time>='2017-08-02' AND t.Date_Time<'2017-08-03'
and r.result >Lower_Limit -- or >=
and r.result < Upper_Limit -- or <=, if it can be the limit value
JOIN all the tables based on their relationships (Foreign Key to Primary Key), choose your filters in the where clause, and choose the columns to "project" with Select.
SELECT d.Test_ID FROM
Boards a, Tests b, ( SELECT x.Test_ID,
x.Board_ID,
x.Operator,
x.Date_Time
from Tests x,
(SELECT a.Board_ID
FROM Tests a, Results b
WHERE a.Date_Time>='2017-08-02'
AND a.Date_Time<'2017-08-03'
and a.Test_ID = b.Test_ID
group by a.Board_ID
) y
)d
WHERE d.Test_ID = d.Test_ID
and b.Result >= Lower_Limit
and b. Result <=Upper_Limit
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I have a simple mysql table with name and age columns. I need to find the age range (say with length 5) which contains the most number of records. Please note that the range can be from anything to anything (like 1 to 5 years or 2 to 6 years). I have created a sqlfiddle for the same at http://sqlfiddle.com/#!2/a65265/1
I have tried using DIV and searched through the forums, but the closest i can get is predefined ranges like age 5-10, 10-15 etc. I need a more generic solution for all possible age ranges.
select 5 * floor((t.age-o.offset)/5) + o.offset as from_age
,5 * (floor((t.age-o.offset)/5) + 1) + o.offset - 1 as to_age
,count(*) as cnt
from test as t
cross join ( select 0 as offset
union all select 1
union all select 2
union all select 3
union all select 4
) as o
group by o.offset
,floor((t.age-o.offset)/5)
order by cnt desc
limit 1
The basic idea -
Each row is being duplicated 5 times, with offset in the range of 0 to 4.
Each offset is causing a different distribution of the elements as described in the following diagrams:
x: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
| | | | | | | | | | | | | | | | | | | |
------------- ------------- ------------- -------------
floor((x-0)/5): 0 1 2 3
x: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
| | | | | | | | | | | | | | | | | | | |
- ------------- ------------- ------------- -------------
floor((x-1)/5): 0 1 2 3
x: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
| | | | | | | | | | | | | | | | | | | |
---- ------------- ------------- ------------- -------------
floor((x-2)/5): 0 1 2 3
x: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
| | | | | | | | | | | | | | | | | | | |
------- ------------- ------------- ------------- -------------
floor((x-3)/5): 0 1 2 3
x: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
| | | | | | | | | | | | | | | | | | | |
---------- ------------- ------------- ------------- -------------
floor((x-4)/5): 0 1 2 3
Prod_Oth_Id ||| Prod_Code ||||| Prod_Details |||||||||| Prod_Value |
1 | BR25MAON | 4 | 9 |
2 | BR25MAON | 5 | 10 |
3 | BR25MAON | 6 | 11 |
4 | BR25MABO | 4 | 9 |
5 | BR25MABO | 5 | 10 |
6 | BR25MABO | 6 | 17 |
7 | BR25GLON | 4 | 9 |
8 | BR25GLON | 5 | 16 |
9 | BR25GLON | 6 | 11 |
10 | BR25GLBO | 4 | 9 |
11 | BR25GLBO | 5 | 16 |
12 | BR25GLBO | 6 | 17 |
I have combination of 3 prod_value for eg 9,10,11
& I want to retrieve prodcode for for above combination which is BR25MAON
for eg if I got 9, 16, 17 then I must retrieve prodcode for this combination which is BR25GLBO
You can count the matches and non matches, if there are 3 Prod_Values to match, there should be 3 matches and 0 non matches;
# 9, 10, 11
SELECT DISTINCT a.Prod_Code FROM MyTable a GROUP BY Prod_Code
HAVING SUM(a.Prod_Value NOT IN (9,10,11)) = 0 # <-- No non matches
AND SUM(a.Prod_Value IN (9,10,11)) = 3; # <-- 3 matches
If you for example were matching (1,2), the query would change to;
# 1, 2
SELECT DISTINCT a.Prod_Code FROM MyTable a GROUP BY Prod_Code
HAVING SUM(a.Prod_Value NOT IN (1,2)) = 0 # <-- No non matches
AND SUM(a.Prod_Value IN (1,2)) = 2; # <-- 2 matches
SQLfiddle demo
If you want to get the product code for different product value then simply use this:
Select Distinct Prod_Code From TableName Where Prod_Value IN (9,10,11)
and it will return only BR25GLBO
If you need something else please explain your requirement in detail.