I'm trying to navigate through not being able to read multidimensional arrays with JavaScriptSerializer.
I think there's a workaround if I can do what's in this answer https://stackoverflow.com/a/9547490/1382306
Basically, if I can store json arrays in each field[] and loop through field, it should be no problem.
How do I loop through field if it's in the query string of this format
?field[]=["a","b","c"]&field[]=["d","e","f"]
Try
Request.QueryString ["field[]"][0]
... to return:
["a","b","c"] {in quotes}
and
Request.QueryString ["field[]"][1]
... to return:
["d","e","f"]
You will have to strip off the square brackets and then use split () over the commas.
Related
I've got a portion of a log entry which looks like an array, but I can only access it with the {} notation.
For example, I think the path is line.ul-log-data.meta.data[0].foo, but the only way I can access the value is line.ul-log-data.meta.data{}.foo.
I've been experimenting with various multivalue field evaluations but coming up short. For example, when I do an mvcount("line.ul-log-data.meta.data"), it returns 1.
What do I have to do to use the array notation [0] and get that count to return 2?
Splunk uses curly brackets to access JSON arrays because square brackets have a very different, historical function.
Have you tried mvcount("line.ul-log-data.meta.data{}")?
I have, in a database, records that are serialized PHP strings that I must obfuscate emails if there are any. The simplest record is like {s:20:"pika.chu#pokemon.com"}. It is basically saying: this is a string of length 20 which is pika.chu#pokemon.com. This field can be kilobytes long with lot of emails (or none) and sometimes it is empty.
I wish I could use a SQL regular expression function to obfuscate the user part of the email while preserving the length of the string in order not to break the PHP serialization. The example email above shall be turned into {s:20:"xxxxxxxx#pokemon.com"} where the number of x matches the length of pika.chu.
Any thoughts?
Here is a more complete example of what can be found as serialized PHP:
a:4:{s:7:"locales";a:3:{i:0;s:5:"fr_FR";i:1;s:5:"de_DE";i:2;s:5:"en_US";}s:9:"publisher";s:18:"john#something.com";s:7:"authors";a:2:{i:0;s:21:"william#something.com";i:1;s:19:"debbie#software.org";}s:12:"published_at";O:8:"DateTime":3:{s:4:"date";s:26:"2022-01-26 13:05:26.531289";s:13:"timezone_type";i:3;s:8:"timezone";s:3:"UTC";}}
I tried to do it using native functions but it not worked because functions like REGEXP_REPLACE don't let you manipulate the match to get the size of it, for example.
Instead, I've created a UDF to do that:
CREATE TEMP FUNCTION hideEmail(str STRING)
RETURNS STRING
LANGUAGE js AS """
return str
.replace(/([a-zA-Z.0-9_\\+-:]*)#/g, function(txt){return '*'.repeat(txt.length-1)+"#";})
""";
select hideEmail('a:4:{s:7:"locales";a:3:{i:0;s:5:"fr_FR";i:1;s:5:"de_DE";i:2;s:5:"en_US";}s:9:"publisher";s:18:"john#something.com";s:7:"authors";a:2:{i:0;s:21:"william#something.com";i:1;s:19:"debbie#software.org";}s:12:"published_at";O:8:"DateTime":3:{s:4:"date";s:26:"2022-01-26 13:05:26.531289";s:13:"timezone_type";i:3;s:8:"timezone";s:3:"UTC";}}')
Result:
a:4:{s:7:"locales";a:3:{i:0;s:5:"fr_FR";i:1;s:5:"de_DE";i:2;s:5:"en_US";}s:9:"publisher";s:18:"****#something.com";s:7:"authors";a:2:{i:0;s:21:"*******#something.com";i:1;s:19:"******#software.org";}s:12:"published_at";O:8:"DateTime":3:{s:4:"date";s:26:"2022-01-26 13:05:26.531289";s:13:"timezone_type";i:3;s:8:"timezone";s:3:"UTC";}}
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 am working in hive / SQL. I have a column in my table with strings which represent an array of json objects. I need to convert the strings to arrays of JSON strings.
For example, I have this,
"[{a:1, b:1},{a:2, b:2}]"
And I want to get this:
["{a:1, b:1}","{a:2, b:2}"]
Tried casting the string as array but that didn't work. Any ideas on how do this in a smart way short of splitting by "},{"?
never mind, I ended up just splitting the string on "}" and then adding back the "}" to each piece, worked well!
i have a string that looks like this
"apples,fish,oranges,bananas,fish"
i want to be able to sort this list and get only the uniques. how do i do it in vb.net? please provide code
A lot of your questions are quite basic, so rather than providing the code I'm going to provide the thought process and let you learn from implementing it.
Firstly, you have a string that contains multiple items separated by commas, so you're going to need to split the string at the commas to get a list. You can use String.Split for that.
You can then use some of the extension methods for IEnumerable<T> to filter and order the list. The ones to look at are Enumerable.Distinct and Enumerable.OrderBy. You can either write these as normal methods, or use Linq syntax.
If you need to get it back into a comma-separated string, then you'll need to re-join the strings using the String.Join method. Note that this needs an array so Enumerable.ToArray will be useful in conjunction.
You can do it using LINQ, like this:
Dim input = "apples,fish,oranges,bananas,fish"
Dim strings = input.Split(","c).Distinct().OrderBy(Function(s) s)
I'm not a VB.NET programmer, but I can give you a suggestion:
Split the string into an array
Create a second array
Cycle through the first array, adding any value that is not in the second.
Upon completion, your second array will have only unique values.