I am trying to populate an empty table(t) from another table(t2) based on a flag field being set. He is my attempt below and the table data.
UPDATE 2014PriceSheetIssues AS t
JOIN TransSalesAvebyType2013Combined AS t2
SET t.`Tran_Type`=t2.`Tran_Type` WHERE t.`rflag`='1';
When I run the script, I receive (0) zero records affected.??
+-----------+----------------+-------------------+-------+-------+
| Tran_Type | RetailAvePrice | WholesaleAvePrice | Rflag | Wflag |
+-----------+----------------+-------------------+-------+-------+
| 125C | 992 | 650 | 1 | NULL |
| 2004R | 1500 | NULL | 1 | NULL |
| 4EAT | 1480 | 1999 | 1 | 1 |
+-----------+----------------+-------------------+-------+-------+
I think you should just do the following
INSERT INTO 2014PriceSheetIssues
( `fldX`, `fldY` )
VALUES (
SELECT `fldX`, `fldY`
FROM TransSalesAvebyType2013Combined
WHERE 2014PriceSheetIssues.`rflag`='1'
)
The select query gets the values and the insert puts it in the (empty) other table.
Related
So basically I have a users table which has a column named "completed_surveys" which holds total number of completed surveys.
I need to create a query which would take step size number and would group them by that range.
Example result which would suit my needs:
+---------+-------------------+
| range | completed_surveys |
+---------+-------------------+
| 0-14 | 4566 |
| 14-28 | 3412 |
| 28-42 | 5456 |
| 42-56 | 33 |
| 56-70 | 31 |
| 70-84 | 441 |
| 84-98 | 576 |
| 98-112 | 23 |
| 112-126 | 12 |
| 126-140 | 1 |
+---------+-------------------+
What I have so far:
select concat(what should i add here??) as `range`,
count(users.completed_surveys) as `completed_surveys` from users WHERE users.completed_surveys > 0 group by 1 order by users.completed_surveys;
I think this query is correct however in the concat function I don't really know how to increase the previous number by 14. Any ideas?
One idea is to first create a helper table with values 0..9 .
CREATE TABLE tmp ( i int );
INSERT INTO tmp VALUES (0) , (1) ... (9);
Then join the two tables:
SELECT concat(i,' - ',(i+1)*7) as `range`,
count(users.completed_surveys) as `completed_surveys` from users
INNER JOIN tmp ON (users.completed_surveys>tmp.i AND users.completed_surveys<=(i+1)*7)
WHERE users.completed_surveys > 0
GROUP BY tmp.i
ORDER BY tmp.i
We have two tables as below:
Table-1 Name: apprecord
---------------------------------------
appid | desc | status
ALT01 | this is first | Open
ALT02 | this is second | Open
ALT03 | this is third | Closed
---------------------------------------
Table-2 Name: question
-----------------------------------------------
appid | questionseq | ques | ans
ALT01 | 1 | how are you | good
ALT01 | 2 | are you fine | yes
ALT02 | 1 | how was your day | great
ALT02 | 2 | are you coming today | yes
ALT03 | 1 | where are you | at home
ALT03 | 2 | are you fine | yes
--------------------------------------------------
How can I write a MySQL query so that I can get the result as below:
----------------------------------------------------------------------------------------
appid | desc | status| QUES1 | ANS1 | QUES2 | ANS2
ALT01 | this is first | Open | how are you | good | are you fine | yes
ALT02 | this is second| Open | how was your day| great | are you coming today | no
ALT03 | this is third | Closed| where are you | at home| are you fine | yes
---------------------------------------------------------------------------------------
Here QUES1, ANS1, QUES2, ANS2 are hardcoded/fixed column headers.
Try this:
Sample data:
create table apprecord(appid varchar(10),desc varchar(100),status varchar(10));
insert into apprecord values
('ALT01','this is first','Open'),
('ALT02','this is second','Open'),
('ALT03','this is third','Closed');
create table question(appid varchar(10),questionseq int,ques varchar(100),ans varchar(10));
insert into question values
('ALT01',1,'how are you','good'),
('ALT01',2,'are you fine','yes'),
('ALT02',1,'how was your day','great'),
('ALT02',2,'are you coming today','yes'),
('ALT03',1,'where are you','at home'),
('ALT03',2,'are you fine','yes');
T-SQL:
select ar.appid,
`desc`,
`status`,
q1.ques ques1,
q1.ans ans1,
q2.ques ques2,
q2.ans ans2
from apprecord ar
left join (select appid, ques, ans from question where questionseq = 1) q1
on ar.appid = q1.appid
left join (select appid, ques, ans from question where questionseq = 2) q2
on ar.appid = q2.appid
This is standard pivoting, although it can be dane as above, using two joins :)
+----+------------+------------+------------+----------+
| id | phone_no | join_date | city | blood_gp |
+----+------------+------------+------------+----------+
| 1 | 80077672xx | 1997-07-19 | Delhi | NULL |
| 2 | 80077642xx | 1998-07-19 | New Delhi | NULL |
| 3 | 80477642xx | 1999-07-19 | Mumbai | NULL |
| 4 | 80077654xx | 1997-05-31 | Kolkata | NULL |
+----+------------+------------+------------+----------+
I want to enter all the blood groups at once . Is there a way to do so ?
you can use single query with select and update
UPDATE table1 , (SELECT * FROM table2 where 1) src
SET table1.blood_gp = src.filed2 where 1 ;
if you want to insert multiple row data using single query then use this code
INSERT INTO yourtable (x,y,z) VALUES (a1,a2,a3), (b1,b2,b3);
or if you want to update one column value all filed then use this code
update yourtable set blood_gp = 'yourvalue' where 1;
if any problem then inform me
Just make an update query without where clause.
update table set blood_gp = 'value'
That's generalize query.
I have a Table:-
+-----+--------------+--------------+----------+--------------------+---------------+-----------------+
| id | CustomerName | VideoQuality | IsActive | BufferedTime | ElapsedTime | TotalBufferTime |
+-----+--------------+--------------+----------+--------------------+---------------+-----------------+
| 139 | HotStar | 180 | Yes | 10.367167126617211 | 30.000000000 | NULL |
| 140 | HotStar | 1300 | NULL | 5.43524230876729 | 34.000000000 | NULL |
| 141 | HotStar | 1300 | NULL | 5.671054515212042 | 38.000000000 | NULL |
| 142 | HotStar | 1300 | NULL | 5.045639532902047 | 41.000000000 | NULL |
| 143 | HotStar | 1300 | NULL | 5.455747718023355 | 44.000000000 | NULL |
| 144 | HotStar | 1300 | NULL | 5.691559924468107 | 49.000000000 | NULL |
i want to calculate the columns BufferTime and ElapsedTime and insert that output to TotalBufferTime column but i want to skip the first row of the BufferTime.
So the fisrt calculation will be 5.43 + 30.000 second calculation will be 5.67 + 34.00 and so on.
I also have a column IsActive which shows the first row of Buffer time.
I want to do something like this :-
update RequestInfo SET `TotalBufferTime` = BufferedTime + ElapsedTime;
only thing i want to skip only the first row of the column buffered time.
Assuming you a field id that determines row order in your table, you can use a correlated subquery so as to get BufferedTime of previous row like this:
SELECT t1.CustomerName, t1.VideoQuality, t1.IsActive, t1.BufferedTime,
t1.ElapsedTime,
(SELECT t2.BufferedTime
FROM mytable AS t2
WHERE t2.td > t1.id
ORDER BY id LIMIT 1) + t1.ElapsedTime AS TotalBufferTime
FROM mytable AS t1
WHERE IsActive IS NULL
Edit:
To UPDATE you can use the following query:
SET #et = 0;
SET #ElapsedTime = NULL;
UPDATE RequestInfo
SET TotalBufferTime = CASE
WHEN (#et := #ElapsedTime) < 0 THEN NULL
WHEN #ElapsedTime := ElapsedTime THEN BufferedTime + #et
END
ORDER BY id;
The trick here is to use a CASE expression where the first WHEN clause is always evaluated (because it is the first one) but is never true. This way #et variable is initialized with the value of #ElapsedTime, i.e. the value of the previous record.
Demo here
I want to merge two rows into one.The below format is in the database.
+----+---------+-----------------------+-------------------------+
| id | appid | photo | signature |
+====+=========+=======================+=========================+
| 1 | 10001 | 10001.photograph.jpg | NULL |
| 2 | 10001 | NULL | 10001.signature.jpg |
+----+---------+-----------------------+-------------------------+
I want a mysql query so that i can fetch data like below,
+--------+------------------------+-------------------------+
| appid | photo | signature |
+========+========================+=========================+
|10001 | 10001.photograph.jpg | 10001.signature.jpg |
+--------+------------------------+-------------------------+
Kindly suggest...
You can also use max function
select appid,
max(photo) photo,
max(signature) signature
from test
group by appid
Demo
This should do this:
select t1.appid,t1.photo,t2.signature from mytable t1 join mytable t2 on t1.appid=t2.appid where t1.id=1 and t2.id=2