I have a table T with a column J of type json, and one of it's row contains value
{'SELECTION':'A'}
I want to change it to
{'selection':'A'}
i.e change the key of the JSON.
Any one has experience? I am not able to find any relevant resource.
Thanks to #Sebastian, I solved it using the documentation https://www.postgresql.org/docs/current/functions-json.html
update T set J = '{"selection":"A"}' where J::jsonb #> '{"SELECTION":"A"}'::jsonb
Another query that will do same
update T set J = '{"selection":"A"}' where J::json->>'SELECTION'='A'
Related
This is my table:
I want to change the TargetCondition column to 'TRUE' when the ICD9CODE column contains a particular range (like between 250 and 250.93).
Please help me do it. Thanks
This is the code here:
update demo.fea_02 set TargetCondition = TRUE where ICD9Code like between '%250%' and '%250.93%'
got the error:
Syntax error: Unexpected keyword BETWEEN at [6:17]
This answers the original version of the question.
You would use update:
update mytable
set targetcondition = 'TRUE'
where icd9code like '%value%';
I've just started using microsoft access so I don't really know how to solve this. I would like to use an update query to add a value from a form to a value on a table.
I originally used the SUM expression which gave me an error saying it was an aggregate function.
I also tried to add the two values together (e.g [field1] + [field2]) which as a result gave me a value with both numbers together instead of adding them together.
The following is the SQL I'm using:
UPDATE Votes
SET Votes.NumVotes = [Votes]![NumVotes]+[Forms]![frmVote]![txtnumvotes]
WHERE (((Votes.ActID) = [Forms]![frmVote]![combacts])
AND ((Votes.RoundNum) = [Forms]![frmVote]![combrndnum]))
I want to add a value [txtnumvotes] a form to a field [NumVotes] from the table [Votes].
Could someone please help me?
You can specify the expected data type with parameters:
PARAMETERS
[Forms]![frmVote]![txtnumvotes] Short,
[Forms]![frmVote]![combacts] Long,
[Forms]![frmVote]![combrndnum] Long;
UPDATE
Votes
SET
Votes.NumVotes = [Votes]![NumVotes]+[Forms]![frmVote]![txtnumvotes]
WHERE
(((Votes.ActID) = [Forms]![frmVote]![combacts])
AND
((Votes.RoundNum) = [Forms]![frmVote]![combrndnum]))
Without the specification, Access has to guess, and that sometimes fails.
I have a database with a json field which has multiple parts including one called tags, there are other entries as below but I want to return only the fields with "{"tags":{"+good":true}}".
"{"tags":{"+good":true}}"
"{"has_temps":false,"tags":{"+good":true}}"
"{"tags":{"+good":true}}"
"{"has_temps":false,"too_long":true,"too_long_as_of":"2016-02-12T12:28:28.238+00:00","tags":{"+good":true}}"
I can get part of the way there with this statement in my where clause trips.metadata->'tags'->>'+good' = 'true' but that returns all instances where tags are good and true including all entries above. I want to return entries with the specific statement "{"tags":{"+good":true}}" only. So taking out the two entries that begin has_temps.
Any thoughts on how to do this?
With jsonb column the solution is obvious:
with trips(metadata) as (
values
('{"tags":{"+good":true}}'::jsonb),
('{"has_temps":false,"tags":{"+good":true}}'),
('{"tags":{"+good":true}}'),
('{"has_temps":false,"too_long":true,"too_long_as_of":"2016-02-12T12:28:28.238+00:00","tags":{"+good":true}}')
)
select *
from trips
where metadata = '{"tags":{"+good":true}}';
metadata
-------------------------
{"tags":{"+good":true}}
{"tags":{"+good":true}}
(2 rows)
If the column's type is json then you should cast it to jsonb:
...
where metadata::jsonb = '{"tags":{"+good":true}}';
If I get you right, you can check text value of the "tags" key, like here:
select true
where '{"has_temps":false,"too_long":true,"too_long_as_of":"2016-02-12T12:28:28.238+00:00","tags":{"+good":true}}'::json->>'tags'
= '{"+good":true}'
I'm a novice in mySql.
I'm trying to replace a value in the xml column of my table.
my select method works.
SELECT * FROM `comics` WHERE ExtractValue(xml,'comic/pageNumber') = 6
my replace method doesn't. I've been searching for the correct syntax for a bit now...
SET xml.modify(
replace value of ('comic/pageNumber') with 5
)
some background:
this situation comes up when i delete a comic page.
it leaves a gap in the page numbers, after which i would either:
iterate through all the comics and remove any gaps in the page numbers.
or
iterate through all comics with pageNumber larger than the deleted page, and reduce their pageNumber by 1.
How about
UPDATE comics
SET xml = UpdateXML(xml,'comic/pageNumber', '<pageNumber>5</pageNumber>')
WHERE ExtractValue(xml,'comic/pageNumber') = 6
Tested on MySQL version 5.1
UPDATE `comics`
SET xml = UpdateXML(xml,
'comic/pageNumber',
concat('<pageNumber>',(ExtractValue(xml,'comic/pageNumber')+1),'</pageNumber>'))
WHERE ExtractValue(xml,'comic/pageNumber') >= 1
You'd be better off actually storing the fields in the table, rather than a single field with xml in it. Then the following would work. Otherwise there's not much point using a relational database at all.
BEGIN;
DELETE FROM `comics`
WHERE `comicID` = :id AND `pageNumber` = :page;
UPDATE `comics` SET `pageNumber` = `pageNumber` - 1
WHERE `comicID` = :id AND `pageNumber` > :page;
COMMIT;
I imported an e-store's database values into my own, and it mostly worked out fine. However, there were no image file names. So, I need to update the entire database- over 6,000 records, so that under 'image' we get a path + model name + jpg, so each product can be associated with an image. Im having trouble mixing the dynamic column value with the static path. Here is what I need to accomplish:
UPDATE `store`.`pr_product`
SET `image` = 'data/products/`**model_no**`.jpg'
WHERE `pr_product`.`product_id` = `pr_product`.`product_id` ;
But cannot get it to recognize the dynamic nature of 'model_no'
Thanks in advance
Max,
Please what you means about dynamic nature of 'model_no'?
Is this column's datatype int or long or varchar
Please need more explaination with example
you can test the following if e.g model_no is column in pr_product table
UPDATE store.pr_product
SET image = 'data/products/'+pr_product.model_no+'.jpg'
WHERE pr_product.product_id = pr_product.product_id ;
Best Regards,
Mohammed Thabet Zaky