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PostgreSQL: built-in function to remove substring starting with certain pattern


PostgreSQL: built-in function to remove substring starting with certain pattern

By : shikhar khanna
Date : November 20 2020, 03:01 PM
it should still fix some issue In my table I have a col_A like below: , You could use regexp_replace() to handle this:
code :
 SELECT regexp_replace(Col_A, '_qq.*$',NULL) from your_table;


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how to get substring, starting from the first occurence of a pattern in bash

how to get substring, starting from the first occurence of a pattern in bash


By : Netdex
Date : March 29 2020, 07:55 AM
it fixes the issue EDITED:
In conclusion, what was requested was a way to parse out the text from a string beginning at a particular substring and ending at the end of the line. As mentioned, there are numerous ways to do this. Here's one...
How to extract a substring pattern in Postgresql

How to extract a substring pattern in Postgresql


By : Shawn Seager
Date : March 29 2020, 07:55 AM
hope this fix your issue Assuming that 2015mmdd actually means some kind of "date", so that the real data contains e.g. 20150713 the following will do:
code :
substring(col_name, '[0-9]{8}_[A-Z]{2}_[A-Z]{2}_[A-Z]{3}_\([a-z]+\)_\([a-z]+\)')
substring(col_name, '[0-9]{4}mmdd_[A-Z]{2}_[A-Z]{2}_[A-Z]{3}_\([a-z]+\)_\([a-z]+\)')
How to get substring after pattern match? And remove found subString from Initial String

How to get substring after pattern match? And remove found subString from Initial String


By : Artur Rocker
Date : March 29 2020, 07:55 AM
Any of those help I have this string , You may use a simple replaceAll to obtain what you want:
code :
String s1 = "FETCH /Students/Mark/School";
s1 = s1.replaceAll("FETCH /Students/[^/]+/School", "FETCH /Students/School");
System.out.println(s1);
String s1 = "FETCH /Students/Mark/School";
String endPart = s1.substring(s1.indexOf("/", 17));
System.out.println(s1.substring(0, 15) + endPart);
Is there a function in dart to remove substring with pattern?

Is there a function in dart to remove substring with pattern?


By : user3660467
Date : March 29 2020, 07:55 AM
wish helps you Not entirely sure what you want but you can use an instance of RegExp to match against a String like:
code :
void main() {
  print(RegExp(r'\{.*?\}')
      .firstMatch(
          '[Armor] Reset the Cooldown of Rocket Boots after falling to or below {scale=10|10}% Health.')
      .group(0)); // {scale=10|10}
}
Built-in for finding the starting positions of a substring in a string in Ruby

Built-in for finding the starting positions of a substring in a string in Ruby


By : DAI
Date : March 29 2020, 07:55 AM
To fix this issue I have written a function to find the starting positions of a substring in a string in Ruby, and from the tests it looks like it is working:
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