Here's a simplified version of my code:
$('#myTable').dataTable({
"ajax" : myURL + "/GetTableData",
"aoColumns" : {
{sTitle: "ID", bVisible: false},
...
{sTitle: "Full Name",
mData: null,
mRender: function (data, type, arrRowData) {
return mergeName(arrRowData[3],arrRowData[4],arrRowData[5])
}
},
...
{sTitle: "Column 10", mData: 14},
},
"aaSorting" : [ 0, 'desc']
}).yadcf([{ column_number: 10 }]);
The problem is, I have several columns with bVisible: false which are not displayed, plus custom-defined columns such as "Full Name" above. Because of this, the mData index does not correspond to the actual displayed column index. I want to display the filter for "Column 10" (which is really column 14 in the row data), but the data that it's trying to filter is from column index (mData) 10, not 14. How can I specify the display column and the actual data column separately - is this possible? The only workaround I found so far is to hardcode the filter choices and pass them to yadcf using data: [...], but this approach is obviously suboptimal and only works in a limited number of scenarios.
Editing to add (maybe this is easier): how would I create a filter for the "Full Name" column so that the filter choices are correct? Right now it only shows the first name (arrRowData[3]) because it apparently assumes that the original row data IS the whole column. But the strange part is, the filter does work on the whole column - so if I select "John" from the dropdown, it finds both John Smith and Bill Johnson.
You can place your filters inside a container div / span and point yadcf column definition with filter_container_id or filter_container_selector , you can place your container anywhere you want (including table header)
Related
I have input fixed width txt file as source.
test file sample below
column_1
12ABC3455
13XYZ5678
How to build dynamic column pattern to produce derived columns.
column Name : empId -> substring(column_1,1,2)
derive Column setting
I can hardcode the empid in & substring(column_1,1,2) in expression.
but i need to make it dynamic with the JSON input to derive dynamic derived columns with column pattern.
Below sample JSON input parameter.
My input JSON formatted parameter
[
{
"colname": "empid",
"startpos": 1,
"length": 2
},
{
"colname": "empname",
"startpos": 3,
"length": 3
},
{
"colname": "empSal",
"startpos": 6,
"length": 4
}
]
help me to build the column pattern with the json input
I tested many times and can't achieve that.
Just per my experience, I'm afraid to tell you that it's impossible to to that in Data Factory actives or Data Flow with json parameter.
I was going through the Postgres Jsonb documentation but was unable to find a solution for a small issue I'm having.
I've got a table : MY_TABLE
that has the following columns:
User, Name, Data and Purchased
One thing to note is that "Data" is a jsonb and has multiple fields. One of the fields inside of "Data" is "Attribute" but it is currently a string. How can I go about changing this to a list of strings?
I have tried using json_build_array but have not had any luck
So for example, I'd want my jsonb to look like :
{
"Id": 1,
"Attributes": ["Test"]
}
instead of
{
"Id": 1,
"Attributes": "Test"
}
I only care about the "Attributes" field inside of the Json, not any other fields.
I also want to ensure for some Attributes that have an empty string "Attributes": "", they get mapped to an empty list and not a list with an empty string ([] not [""])
You can use jsonb_set(), and some conditional logic for the empty string:
jsonb_set(
mycol,
'{Attributes}',
case when js ->> 'Attributes' <> ''
then jsonb_build_array(js ->> 'Attributes')
else '[]'::jsonb
end
)
I have list of users table created in vue-tables-2. I want to add checkbox column before each row to select multiple row and before header to select all row like gmail.
can anyone help me out ?
it is very simple.
you should add a column to your vuetables column, just this.
imagine you are defining your tables column in fileds variable.ok ?
i mean something like below,just put this code inside your table coulmn:
fields: [
{
name: '__checkbox',
titleClass: 'center aligned',
dataClass: 'center aligned'
},
//...
]
if you wana get more information take look at this link:
https://github.com/ratiw/vuetable-2-tutorial/wiki/lesson-11
I have a table say types, which had a JSON column, say location that looks like this:
{ "attribute":[
{
"type": "state",
"value": "CA"
},
{
"type": "distance",
"value": "200.00"
} ...
]
}
Each row in the table has the data, and all have the "type": "state" in it. I want to just extract the value of "type": "state" from every row in the table, and put it in a new column. I checked out several questions on SO, like:
Query for element of array in JSON column
Index for finding an element in a JSON array
Query for array elements inside JSON type
but could not get it working. I do not need to query on this. I need the value of this column. I apologize in advance if I missed something.
create table t(data json);
insert into t values('{"attribute":[{"type": "state","value": "CA"},{"type": "distance","value": "200.00"}]}'::json);
select elem->>'value' as state
from t, json_array_elements(t.data->'attribute') elem
where elem->>'type' = 'state';
| state |
| :---- |
| CA |
dbfiddle here
I mainly use Redshift where there is a built-in function to do this. So on the off-chance you're there, check it out.
redshift docs
It looks like Postgres has a similar function set:
https://www.postgresql.org/docs/current/static/functions-json.html
I think you'll need to chain three functions together to make this work.
SELECT
your_field::json->'attribute'->0->'value'
FROM
your_table
What I'm trying is a json extract by key name, followed by a json array extract by index (always the 1st, if your example is consistent with the full data), followed finally by another extract by key name.
Edit: got it working for your example
SELECT
'{ "attribute":[
{
"type": "state",
"value": "CA"
},
{
"type": "distance",
"value": "200.00"
}
]
}'::json->'attribute'->0->'value'
Returns "CA"
2nd edit: nested querying
#McNets is the right, better answer. But in this dive, I discovered you can nest queries in Postgres! How frickin' cool!
I stored the json as a text field in a dummy table and successfully ran this:
SELECT
(SELECT value FROM json_to_recordset(
my_column::json->'attribute') as x(type text, value text)
WHERE
type = 'state'
)
FROM dummy_table
I have an issue where I have some JSON stored in my oracle database, and I need to extract values from it.
The problem is, there are some fields that are duplicated.
When I try this, it works as there is only one firstname key in the options array:
SELECT
JSON_VALUE('{"increment_id":"2500000043","item_id":"845768","options":[{"firstname":"Kevin"},{"lastname":"Test"}]}', '$.options.firstname') AS value
FROM DUAL;
Which returns 'Kevin'.
However, when there are two values for the firstname field:
SELECT JSON_VALUE('{"increment_id":"2500000043","item_id":"845768","options":[{"firstname":"Kevin"},{"firstname":"Okay"},{"lastname":"Test"}]}', '$.options.firstname') AS value
FROM DUAL;
It only returns NULL.
Is there any way to select the first occurence of 'firstname' in this context?
JSON_VALUE returns one SQL VALUE from the JSON data (or SQL NULL if the key does not exists).
If you have a collection of values (a JSON array) an you want one specific item of the array you use array subscripts (square brackets) like in JavaScript, for example [2] to select the third item. [0] selects the first item.
To get the first array item in your example you have to change the path expression from '$.options.firstname' to '$.options[0].firstname'
You can follow this query:-
SELECT JSON_VALUE('{
"increment_id": "2500000043",
"item_id": "845768",
"options": [
{
"firstname": "Kevin"
},
{
"firstname": "Okay"
},
{
"lastname": "Test"
}
]
}', '$.options[0].firstname') AS value
FROM DUAL;