I have two tables (with sample data):
tblZone
[ZoneNo] [Zone]
-----1------Zone1
-----2------Zone2
-----3------Zone3
tblPointsClient
[PolygonID] [Zone Name]
-----0------------Zone1
-----0------------Zone1
-----0------------Zone1
-----0------------Zone2
-----0------------Zone2
-----0------------Zone2
-----0------------Zone3
-----0------------Zone3
-----0------------Zone3
Basically, using MySQL, I am trying to update the PolygonID in tblPointsClient by what the ZoneNo is for the Zone in tblZone (if that makes sense).
So when I run this update it should change the PolygonID's to:
[PolygonID] [Zone Name]
-----1------------Zone1
-----1------------Zone1
-----1------------Zone1
-----2------------Zone2
-----2------------Zone2
-----2------------Zone2
-----3------------Zone3
-----3------------Zone3
-----3------------Zone3
I have tried the following:
UPDATE tblPointsClient
SET tblPointsClient.PolygonID = (
SELECT ZoneNo FROM tblZones WHERE tblPointsClient.ZoneNo = tblZones.Zone
)
but this made all the PolygonID's 0
If anybody could help, that would be much appreciated! :)
UPDATE tblPointsClient a
INNER JOIN tblZone b
ON a.`Zone Name` = b.Zone
SET a.PolygonID = b.ZoneNo
for faster performance, add an INDEX on column Zone Name on table tblPointsClient and Zone on table tblZone.
UPDATE 1
SQLFiddle Demo
You can use subquery to achieve this goal:
UPDATE tblPointsClient
SET PolygonID = (SELECT TOP 1 ZoneNo FROM tblZone WHERE Zone = [Zone Name])
WHERE PolygonID = 0
I have created code for updating only rows with PolygonID = 0
Related
I have a transport planner written in PHP and MySQL,
To get the task rules per day, I use the following query:
SELECT planning.*,
planning_dagen.planning_id,
planning_dagen.dagen,
planning_dagen.data_import,
routenummer_wijzigingen.routenummer AS temp_routenummer
FROM planning
LEFT JOIN planning_dagen
USING (planning_id)
LEFT JOIN routenummer_wijzigingen
USING (planning_id)
WHERE :datum >= planning.datum
AND :datum <= geldig_tot
AND (frequentie = 'dagelijks' AND dayofweek(:datum) = planning_dagen.dagen
OR (frequentie = 'eenmalig' AND date(:datum) = planning.datum)
OR (frequentie = 'wekelijks' AND 0 = (abs(datediff(:datum, planning.datum)) % 7))
OR (frequentie = 'twee-wekelijks' AND 0 = (abs(datediff(:datum, planning.datum)) % 14))
OR (frequentie = 'maandelijks'
AND ceil(dayofmonth(:datum)/7) = ceil(dayofmonth(planning.datum)/7)
AND dayofweek(:datum) = dayofweek(planning.datum)))
AND dayofweek(:datum) <> '1'
AND dayofweek(:datum) <> '7'
In the planning table there is a column called routenummer (routenumber) which is used in most conditions (standard routenumber).
But as you can see I have also a routenummer_wijzigingen table which is used to give a task a different routenumber for certain day.
For example I have a task which returns every tuesday and wednesday and has routenumber 10. But on tuesday 2015-02-03 I need this task done by routenumber 9.
So I insert a rule in the routenummer_wijzigingen table which has the following columns:
routenummer_wijzigingen_id
planning_id
routenummer
datum
So when a date is selected and that date and planning_id exists in the routenummer_wijzigingen table, it has to take the routenumber from the routenummer_wijzigingen table instead of the planning table.
How can I achieve this?
You should modify join condition with routenummer_wijzigingen table (including datum). Then you should use CASE in your SELECT clause to decide which routenummer to choose.
SELECT planning.*,
planning_dagen.planning_id,
planning_dagen.dagen,
planning_dagen.data_import,
CASE
WHEN routenummer_wijzigingen.routenummer is not NULL
THEN routenummer_wijzigingen.routenummer
ELSE planning.routenummer
END AS temp_routenummer
FROM planning
...
LEFT JOIN routenummer_wijzigingen rw on
planning.planning_id=rw.planning_id and rw.datum=...
There are 2 tables INFO and ADDR
ADDR has 4 columns ID, LINE_1_ADDR, LINE_2_ADDR, TEMP_ADDR_ID
INFO has 4 columns ID, FIRST_NAME, LAST_NAME, ADDR_ID
I want to replace the data in INFO.ADDR_ID with ADDR.ID whenever there is a match of INFO.ADDR_ID and ADDR.TEMP_ADDR_ID
I have the following UPDATE query which is giving error
ORA-00905: missing keyword
Below is my code:
UPDATE INFO SET INFO.ADDR_ID = (CASE
WHEN ADDR.TEMP_ADDR_ID = INFO.ADDR_ID
THEN INFO.ADDR_ID = ADDR.ID
END);
I am new to SQL queries involving case, don't know where it's wrong. Any help please !
Thanks
if you using MYSQL
UPDATE INFO
INNER JOIN ADRR ON ADDR.TEMP_ADDR_ID = INFO.ADDR_ID
SET INFO.ADDR_ID = ADDR.ID
If you using ORACLE
use this
UPDATE INFO SET INFO.ADDR_ID = (SELECT ADRR.ID
FROM ADRR
WHERE ADDR.TEMP_ADDR_ID = INFO.ADDR_ID)
EDIT: After getting more info, echo_Me's approach is the right one for the update.
UPDATE INFO
JOIN ADDR ON /*your Join condition*/
SET INFO.ADDR_ID = ADDR.ID
I'm spinning in circles trying to figure out what is likely a very simple SQL structure. My task seems simple - within the same table I need to update 3 related records with data from one master record. The master coordinates are in the record with a class of 'T', and I want to insert that record's coordinates into the rx_latitude/longitude columns of the related records with class code 'R'
The table structure is: callsign, class, tx_latitude, tx_longitude, rx_latitude, rx_longitude. Sample data looks like this:
J877, T, 40.01, -75.01, 0, 0
J877, R, 39.51, -75.21, 0, 0
J877, R, 40.25, -75.41, 0, 0
J877, R, 39.77, -75.61, 0, 0
Within that same table, I want to populate all of the rx_latitude and rx_longitude fields where the class is 'R' with the tx_latitude and tx_longitude coordinates where the class is 'T' and the callsign matches.
I've tried several insert and update statements, but I can only seem to operate on the master record, not the related records. I would appreciate any guidance that you might offer.
You can use UPDATE...FROM statement:
UPDATE theTable
SET
tx_latitude = masterRecord.tx_latitude,
tx_longitude = masterRecord.tx_longitude
FROM
(SELECT tx_latitude,tx_longitude,callsign FROM theTable WHERE class='T') masterRecord
WHERE
class='R' AND callsign = masterRecord.callsign
Updated
Try :
update yourTable t1, yourTable t2 set
t1.tx_latitude = t2.tx_latitude,
t1.tx_longitude = t2.tx_longitude
where t1.class = 'R' and t2.class = 'T' and t1.callsign = t2.callsign
Example
You can use MySQL's update ... join syntax.
It would go something like this:
update yourtable toUpdate
left join yourtable masterRecordTable
on toUpdate.callsign = masterRecordTable.callsign and masterRecordTable.class = 'T'
set toUpdate.rx_latitude = masterRecordTable.tx_latitude,
toUpdate.rx_longitude = masterRecordTable.tx_longitude
where toUpdate.callsign = 'J877' and toUpdate.class = 'R'
See this fiddle for a working example
I have multiple update statements in a stored procedure (as shown below).
Question is I am trying to combine them into one UPDATE statement as there is a performance issue (takes longer to execute stored procedure). I tried putting columns (such as PONUMBER, VENDORID etc) in a single update statement but it is throwing errors.
Please suggest.
UPDATE rptMaster SET PONUMBER = (select top 1 poMaster.PONUMBER from poMaster where poMaster.ITEMNMBR =rptMaster.ITEMNMBR and
poMaster.UnCommited > 0)
UPDATE rptMaster SET VENDORID = (select top 1 poMaster.VENDORID from poMaster where poMaster.ITEMNMBR =rptMaster.ITEMNMBR and
poMaster.UnCommited > 0)
UPDATE rptMaster SET DUEDATE = (select top 1 poMaster.REQDATE from poMaster where poMaster.ITEMNMBR =rptMaster.ITEMNMBR and
poMaster.UnCommited > 0)
UPDATE rptMaster SET POQTYORDER = (select top 1 (poMaster.QTYORDER / rptMaster.UOMQTY) from poMaster where poMaster.ITEMNMBR =rptMaster.ITEMNMBR and
poMaster.UnCommited > 0)
Mine is similar to polkduran's:
WITH PO AS (
SELECT PONUMBER
, VENDORID
, REQDATE
, QTYORDER
, ITEMNMBR
, ROW_NUMBER() OVER (PARTITION BY ITEMNMBR ORDER BY ??) as RN
FROM poMaster
WHERE UnCommited > 0
)
UPDATE rptMaster
SET PONUMBER = po.PONUMBER
, VENDORID = po.VENDORID
, DUEDATE = po.REQDATE
, POQTYORDER = po.QTYORDER / rptMaster.UOMQTY
FROM rptMaster
JOIN PO
ON PO.ITEMNMBR = rptMaster.ITEMNMBR
and PO.RN = 1
I'm using a Common Table Expression (CTE) to assign a row number to each poMaster record, with the records for each value of ITEMNMBR numbered separately. This allows us to pick to the first record for each ITEMNBR in our JOIN, later, similar to the way you were using Top 1 in your subqueries.
Please note, though: because you didn't indicate how you wanted to select the Top 1 record in your query, I had to leave the ORDER BY clause in the CTE unspecified. (I put ?? in as a placeholder.) You need to specify one or more sort fields in place of the ?? so it knows how to sort and number the records.
You can make an update using a join clause:
update rpt
set
PONUMBER = po.PONUMBER,
VENDORID = po.VENDORID,
DUEDATE = po.REQDATE,
POQTYORDER = (po.QTYORDER / rpt.UOMQTY)
from rptMaster rpt
inner join poMaster po
on po.ITEMNMBR = rpt.ITEMNMBR
where po.UnCommited > 0
I don't have a way to test it right now but that might work.
I need to fill some fields in a table getting informations from other records of the same table.
I tried to write a query to explain what I want to do:
update globale2
set
nita = t.nita,
tita = t.tita,
notaita = t.notaita
where
neng = t.neng and
nita is null
(select nita, neng, tita, notaita from globale where uris='mma' and nita is not null) as t
edit to eplain better:
every records have these fields: "nita", "tita", "notaita", "neng" ("neng" cannot be null)
I want to fill these fields: "nita", "tita", "notaita" (where "nita" is empty)
with the same values from another record where "neng" equals the other "neng"
You can however, join the two tables.
UPDATE globale2 g
INNER JOIN globale gg
ON g.neng = gg.neng
SET g.nita = gg.nita,
g.tita = gg.tita,
g.notaita = gg.notaita
WHERE g.nita IS NULL
AND gg.uris = 'mma'
AND gg.nita IS NOT NULL
assume there is a table A_temp, with two columns 'one' and 'two'.
TABLE A_temp
ONE TWO
1 2
this is the present status of the table.
The query
UPDATE (SELECT * FROM A_temp ) A SET one = A.two where one = '1'
updates the table as
ONE TWO
2 2
Hope you get the idea and that it helps..