I'm a bit struggeling to make my plan to work. I'm getting a csv export from a member administration system. The plan is to update this list to a wordpress database. In order to acomplish that, i have made two tables.
current_members AND new_members.
First I import the csv to new_members, i do a check to see if there are new members (compared with the current_members), and members that need to be deleted, if so, the member gets a new or a delete flag, (current_members.deleted = true & new_members.new = true. So far, so good. I just use this simple qyery:
UPDATE `new_memberSync` SET `new_memberSync`.`new` = '1' where `new_memberSync`.`regnr` NOT IN (select `regnr` from `current_memberSync`)
The second query to flag deleted:
UPDATE `current_memberSync` SET `current_memberSync`.`deleted` = '1' where `current_memberSync`.`regnr` NOT IN (SELECT `regnr` FROM `new_memberSync`)
Next, i want to preform a check on the content of all member's fields. If a member is updated, i want to set a updated flag. I have made a new query, its not complete yet, but i see a list of changed members. The quesstion, how do i set changed to 1 for all instances found with this query:
SELECT `new_memberSync`.`pe_code`,`new_memberSync`.`regnr`,`new_memberSync`.`voorletters`,`new_memberSync`.`roepnaam`,`new_memberSync`.`new`
FROM `new_memberSync`
JOIN `current_memberSync` ON `new_memberSync`.`regnr` = `current_memberSync`.`regnr`
WHERE `new_memberSync`.`roepnaam` <> `current_memberSync`.`roepnaam`
OR `new_memberSync`.`straatnaam` <> `current_memberSync`.`straatnaam`
OR ..
OR .. ETC.
I tried using something like : UPDATE new_membersSync SET changed = 1 ON ( HERE THE QUERY)
Related
I am currently trying to set up a GUI frontend for easier querying for colleagues.
I have tried researching and following instructions from various sources but still not able to make it work.
I have two lists.
1) This is the row source query for the first list(List0):
SELECT Test_Case_ID.Test_Case_Unique_ID, Test_Case_ID.Test_Case_Description
FROM Test_Case_ID
ORDER BY Test_Case_ID.[Test_Case_Description];
2) This is for the second list(List2):
SELECT Reference_ID.Reference
FROM Test_Case_ID INNER JOIN (Reference_ID INNER JOIN Test_Result
ON Reference_ID.Reference_Unique_ID = Test_Result.Reference_Unique_ID)
ON Test_Case_ID.Test_Case_Unique_ID = Test_Result.Test_Case_Unique_ID
WHERE (((Test_Case_ID.Test_Case_Description)=[Forms]![Form1]![List0]));
I have a an event procedure for List0:
Private Sub List0_AfterUpdate()
Forms![Form1]![List2].Requery
End Sub
However, there are no outputs on List2 even after clicking on items in List0. Can I have some advice to fix it? Thank you
Firstly, check that the bound column of your list box List0 corresponds to your Test_Case_Description field.
With the form open and populated with data, you can also run a number of tests 'manually' by creating a separate query containing the SQL for your list box row source and verifying whether or not it returns any results:
select
reference_id.reference
from
test_case_id inner join
(
reference_id inner join test_result
on reference_id.reference_unique_id = test_result.reference_unique_id
)
on test_case_id.test_case_unique_id = test_result.test_case_unique_id
where
test_case_id.test_case_description = [forms]![form1]![list0]
You can also use a query with the following SQL code to test the value returned by [forms]![form1]![list0] and ensure that it returns the value that you expect for use in your selection criteria:
select
t.test_case_description,
[forms]![form1]![list0] as listboxvalue,
t.test_case_description = [forms]![form1]![list0] as testmatch
from
test_case_id t
I want to create a trigger that does the following:
copy one column of info jobnumber from one table (jobs) to another (materials) on an existing record to attachedjobnumber.
I haven't found the correct syntax to say this. when I insert a new job - nothing gets update and no new row is inserted,,, but there are no error messages in the logs.
I also need to set the bool (hasjobnumber) equal to true - when I test that trigger - it works fine.
which makes me think that setting the value of material.attachedjobnumber = jobs.jobnumber is the problem, my guess is that jobs.jobnumber isn't in reference when updating table material...
if that's true - what's the proper syntax for this?
I've tested separate triggers, and so far this trigger works fine.
UPDATE material
SET isjobyet = "HAS"
WHERE barcode1 IN (
SELECT primaryRFID
FROM jobs
WHERE jobs.primaryRFID = material.barcode1
)
since this code does work - I make the assumption that the non-static JobNumber value is the source of the problem. since "HAS" is correctly updated.
UPDATE material
SET material.AttachedJobNumber = jobs.JobNumber
WHERE barcode1 IN (
SELECT primaryRFID
FROM jobs
WHERE jobs.primaryRFID = material.barcode1
)
from this - I expect that after each inserts on the table jobs:
jobs.JobNumber be assigned to the material.AttachedJobName
this updates only the material row where the material.barcode1 =jobs.primaryrfid.
but no new row is inserted at all.
Before you perform UPDATE,
Actually you can use the same script using SELECT [skip the UPDATE SYNTAX]
That way you can monitor your script without committing anything yet.
And also I dont recommend using this inside the subquery
WHERE jobs.primaryRFID = material.barcode1
This condition connecting a table works on IN-SELECT subquery.
If you are performing subqueries inside the [WHERE] clause, try to treat it as different buffer, dont connect them first.
The Data for my MySQL Database is imported from excel files via LOAD DATA IN FILE every night. Then they are temorarily stored in the table projekt2.
For every row in projekt2 i want to check if there is already one row in projekt1 that matches exactly (all columns), then it should not be imported.
If one column is different, the row should be identified as correction and the old row should be altered.
If two, three, for or five columns are different it should be identified as a conflict and the system should send an email and ask what to do.
If more than five columns are different it should be identified as a new row and be added to the table.
My Mysql-Version: 10.1.37-MariaDB-0+deb9u1
I started to check every Possibility like All are equal, then only the first is different, but all the rest is equal, then only the second etc.
But this will be a lot of queries in the end and I hope, there is a more efficient way to solve this in counting the duplicate columns.
UPDATE
SELECT * FROM projekt2
WHERE EXISTS (
SELECT id FROM projekt1
WHERE projekt1.datum = projekt2.datum
AND projekt1.begleitschein = projekt2.begleitschein
AND projekt1.menge = projekt2.menge
AND projekt1.abfallschluessel = projekt2.abfallschluessel
AND projekt1.entsorgungsnachweis = projekt2.entsorgungsnachweis
AND projekt1.befoerderer = projekt2.befoerderer
AND projekt1.erzeuger = projekt2.erzeuger
AND projekt1.waegennummer = projekt2.waegennummer
AND projekt1.waage = projekt2.waage
AND projekt1.kfz = projekt2.kfz
AND projekt1.charge = projekt2.charge
AND projekt1.art = projekt2.art
),
I have a table of texts from various dates. Each is indexed by service, variation, and page and sub-page ids.
I need to fetch all entries for a given service, page and sub-page. i.e. each variation! BUT If the particular specific subpage doesn't exist, I need it to fetch the first subpage for that page, rather than nothing for that variation.
This is my code -
SELECT * FROM frames f
LEFT JOIN varients v ON f.varient_id = v.varient_id AND f.service_id = v.service_id
ẀHERE f.service_id = :sid
AND f.frame_id = :fid
AND (f.subframe_id = :subid
OR f.subframe_id = (
select min(subframe_id) from frames ff
ẀHERE ff.service_id = f.service_id
AND ff.varient_id = f.varient_id AND ff.frame_id = f.frame_id
)
)
GROUP BY f.service_id, f.varient_id, f.frame_id
ORDER BY f.service_id, v.varient_date, f.frame_id, f.subframe_id
but as often as not this just gives the minimum rather than the specific, even when the specific value exists. I'm pretty sure that the OR isn't what I need..
I've tried working with UNION as per some other answers, but since I want more than a single result, I can't seem to work it out!
Thanks for any help ..
OK. I managed to achieve what I wanted. Two days of messing with this, and finally work it out after posting a question. I was helped by one of the 'related' questions, which whilst not giving me an answer, made me think about it a different way -
I basically turned the whole thing inside out: As i only wanted one result per variation, I used that as the primary table. Then Joined the 'frames' table twice, once for the specific value, and once for the first value (found using a search for MIN().) Used IFNULL to return the second record if the first wasn;t found. An extra IS NOT NULL check against the second record within the WHERE to avoid returning anything where there is nothing stored against the variation record.
SELECT v.service_id, v.varient_id, IFNULL(f.frame_id,ff.frame_id)as frame_id,
IFNULL(f.subframe_id,ff.subframe_id) as subframe_id , IFNULL(f.frameunique, ff.frameunique) as frameunique, IFNULL(f.frame_content,ff.frame_content) as framecontent
FROM varients v
LEFT JOIN `frames` f ON `f`.`varient_id` = `v`.`varient_id` AND `f`.`service_id` = `v`.`service_id` AND `f`.`frame_id` = 698 AND `f`.`subframe_id` = 0004
LEFT JOIN `frames` ff ON `ff`.`varient_id` = `v`.`varient_id` AND `ff`.`service_id` = `v`.`service_id` AND `ff`.`frame_id` = 698
AND `ff`.`subframe_id` = (select min(`subframe_id`) from `frames` `fff` where `fff`.`service_id` = `v`.`service_id`
AND `fff`.`varient_id` = `v`.`varient_id` AND `fff`.`frame_id` = 698 )
where `v`.`service_id` = 3 AND ff.frameunique IS NOT NULL
ORDER BY `f`.`service_id`, `v`.`varient_date`, `f`.`frame_id`, `f`.`subframe_id`
Posting this in case it helps anybody else. It still needs tidying but it works. Thanks for the comments. :)
This is more of a theory question. I have a page with a bunch of various textfields, dropdown boxes, etc. Each user has his/her "own page" that can be updated via this update page that I am referring to. He updates the fields at his choosing. It passes about 30 variables (if every field is inputted) to a "preview page". If the person likes the preview page, then they click an "update" button at the bottom of the preview page and all the various variables are updated into the appropriate MySQL table and their "own page" that others see is updated dynamically. (let me know if this explanation isn't clear).
Inserting this information for the first time is easy. However, when a user wants to update only a few of the fields for his page later, this is where I am confused. How do I make the MySQL update query dynamic to recognize an update to ONLY the fields on the page that the user wants to update (while he leaves the other fields blank, thus leaving the old information intact for those columns, and they are disregarded in the update query).
Let me know if what I'm asking doesn't make sense and I'll try again.
Thanks for your help.
The easiest way to do this would be
UPDATE MyTable m SET m.f1 = COALESCE(input1,m.f1), m.f2 = COALESCE(input2,m.f2), ....
WHERE m.id = key;
The COALESCE will return the first non-null value (or null if all values are null).
Note that you can insert a default value after the existing field value if you want to force a default.
Like so:
UPDATE MyTable m SET m.f1 = COALESCE(input1,m.f1,default1), m.f2 = COALESCE(input2,m.f2,default2), ....
WHERE m.id = key;
See: MySQL: how to use COALESCE
http://dev.mysql.com/doc/refman/5.0/en/comparison-operators.html#function_coalesce