I'm trying since yesterday to use the function (A * B), very simple like operation, but it does not work.
Any help!
thank you.
https://drive.google.com/folderview?id=0B3XPAOxNJYxMfno0V0I3N21wblBhR1lyekhpNWlzb21XN2pHckJYRkdpSDNMX1NGT1hzQVk&usp=sharing
Add the following two additional steps String operations and Select Values to the same ktr.
In String Operations step do the following configurations.
And in Select values step use the below mentioned configurations in Meta-data tab.
And Finally in Calculator step you can use the value type as BigNumber and a conversion mask #.# for your new field Total.
P.S
There was a leading space in fields Prix and Ventes that had to remove using String operations step. That's why it failed in multiplication.
Related
Below is the string that I have -
vdp_plus_forecast_aucc_VDP_20221024_variance_analysis_20221107_backcasting_actuals_asp_True_vlt_True.csv
I need RegEx to take out following items from the string -
20221107
vlt_True
Need help with writing right RegEx for these two extractions. I'm performing the operation on a PySpark DF.
I'm assuming that the answer is based on the variable in front of it so it's capturing the value of variance analysis:
(?<=_variance_analysis_)[0-9]+|vlt_(True|False)
This should capture the variables you wanted, if you only need the value of vlt, you can replace vlt_ with (?<=_vlt) which will just capture the value without the variable
I need to execute a SQL query, which converts a String column to a Array and then validate the size of that array
I was able to do it easily with postgresql:
e.g.
select
cardinality(string_to_array('a$b','$')),
cardinality(string_to_array('a$b$','$')),
cardinality(string_to_array('a$b$$$$$','$')),
But for some reason trying to convert String on vertica to array is not that simple, Saw this links:
https://www.vertica.com/blog/vertica-quick-tip-dynamically-split-string/
https://forum.vertica.com/discussion/239031/how-to-create-an-array-in-vertica
And much more that non of them helped.
I also tried using:
select REGEXP_COUNT('a$b$$$$$','$')
But i get an incorrect value - 1.
How can i Convert String to array on Vertica and gets his Length ?
$ has a special meaning in a regular expression. It represents the end of the string.
Try escaping it:
select REGEXP_COUNT('a$b$$$$$', '[$]')
You could create a UDx scalar function (UDSF) in Java, C++, R or Python. The input would be a string and the output would be an integer. https://www.vertica.com/docs/9.2.x/HTML/Content/Authoring/ExtendingVertica/UDx/ScalarFunctions/ScalarFunctions.htm
This will allow you to use language specific array logic on the strings passed in. For example in python, you could include this logic:
input_list = input.split("$")
filtered_input_list = list(filter(None, input_list))
list_count = len(filtered_input_list)
These examples are a good starting point for writing UDx's for Vertica. https://github.com/vertica/UDx-Examples
I wasn't able to convert to an array - but Im able to get the length of the values
What i do is convert to Rows an use count - its not best performance wise
But with this way Im able to do also manipulation like filtering of each value between delimiter - and i dont need to use [] for characters like $
select (select count(1)
from (select StringTokenizerDelim('a$b$c','$') over ()) t)
Return 3
I have a column called "Bakery Activity" whose values are all JSONs that look like this:
{"flavors": [
{"d4js95-1cc5-4asn-asb48-1a781aa83": "chocolate"},
{"dc45n-jnsa9i-83ysg-81d4d7fae": "peanutButter"}],
"degreesToCook": 375,
"ingredients": {
"d4js95-1cc5-4asn-asb48-1a781aa83": [
"1nemw49-b9s88e-4750-bty0-bei8smr1eb",
"98h9nd8-3mo3-baef-2fe682n48d29"]
},
"numOfPiesBaked": 1,
"numberOfSlicesCreated": 6
}
I'm trying to extract the number of pies baked with a regex function in Tableau. Specifically, this one:
REGEXP_EXTRACT([Bakery Activity], '"numOfPiesBaked":"?([^\n,}]*)')
However, when I try to throw this calculated field into my text table, I get an error saying:
ERROR: function regexp_matches(jsonb, unknown) does not exist;
Error while executing the query
Worth noting is that my data source is PostgreSQL, which Tableau regex functions support; not all of my entries have numOfPiesBaked in them; when I run this in a simulator I get the correct extraction (actually, I get "numOfPiesBaked": 1" but removing the field name is a problem for another time).
What might be causing this error?
In short: Wrong data type, wrong function, wrong approach.
REGEXP_EXTRACT is obviously an abstraction layer of your client (Tableau), which is translated to regexp_matches() for Postgres. But that function expects text input. Since there is no assignment cast for jsonb -> text (for good reasons) you have to add an explicit cast to make it work, like:
SELECT regexp_matches("Bakery Activity"::text, '"numOfPiesBaked":"?([^\n,}]*)')
(The second argument can be an untyped string literal, Postgres function type resolution can defer the suitable data type text.)
Modern versions of Postgres also have regexp_match() returning a single row (unlike regexp_matches), which would seem like the better translation.
But regular expressions are the wrong approach to begin with.
Use the simple json/jsonb operator ->>:
SELECT "Bakery Activity"->>'numOfPiesBaked';
Returns '1' in your example.
If you know the value to be a valid integer, you can cast it right away:
SELECT ("Bakery Activity"->>'numOfPiesBaked')::int;
I found an easier way to handle JSONB data in Tableau.
Firstly, make a calculated field from the JSONB field and convert the field to a string by using str([FIELD_name]) command.
Then, on the calculated field, make another calculated field and use function:
REGEXP_EXTRACT([String_Field_Name], '"Key_to_be_extracted":"?([^\n,}]*)')
The required key-value pair will form the second caluculated field.
I have this :
Insertion des données dans table some_table.0 - SOME_AUTO_GENERATED_DB_KEY Integer : There was a data type error: the data type of java.lang.Boolean object [true] does not correspond to value meta [Integer]
What boolean??? Where do you see a boolean? I have added a trace writing to the step just before this failing inserting step, and I see a perfectly fine integer as value of SOME_AUTO_GENERATED_DB_KEY .
How can this be possible? I am very new to Kettle, if you have any idea or tips it would be awesome.
Here a screenshot of the transformation :
Just before the failed insert, you have a filter that splits the stream. On one half of the stream, it looks like you have an Add Constant step. If I'm reading this right, then the two inputs to the Insert step don't have the same fields in the same order. A few steps earlier, there is a similar splitting of the paths that goes off to the right, which could have the same effect.
Whenever you remerge streams like this without being very careful, strange errors like this can pop up. Pentaho usually tries to warn you when you create the hop to remerge the streams, but there are ways to miss that warning.
Suggestion: For each time the stream remerges, right-click on each of the two previous steps, and have it show you the output fields. Compare the two lists side-by-side to verify they are the same. If not, then you will have to add or remove fields as appropriate to make them the same on both sides.
Hi can someone show me how to do this:
Your function should take a Maple list of complex numbers as its input and return the largest modulus from that list.
Hint: Use the map command to apply the abs command to some such list. Then apply the max command to that. Now repeat, by composing that second operation around the first. Finally, create an operator which takes L to that composed operation applied to L.
Look to the help-pages ?max, ?map, ?abs, and ?operators,functional, if necessary.