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Find multiple strings and replace with single string in Postgres


Find multiple strings and replace with single string in Postgres

By : Julian Fernando More
Date : November 15 2020, 06:54 AM
like below fixes the issue Read the section about Bracket Expressions which explains how to search for characters within a string to replace
but this should work for you
code :
UPDATE __table__ SET __column__ = regexp_replace( __column__, E'[\\s,;:]','_','g')


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Using postgres regexp_replace to replace a list of strings by always the same string

Using postgres regexp_replace to replace a list of strings by always the same string


By : Toan Huynh
Date : March 29 2020, 07:55 AM
I hope this helps you . ok found out the answer myself (helped by PostgreSQL various clean up of string \ varchar):
code :
select regexp_replace(
E'aśx€ ąsd, dsa w|adwf\n  YZas dw dgaa[aw] asdd',
'[^a-zA-Y0-9 ]',
'',
'g');
Replace a single string with multiple strings

Replace a single string with multiple strings


By : user2470502
Date : March 29 2020, 07:55 AM
wish helps you You can use this function as a drop-in replacement in your code. It uses vsprintf as @h2ooooooo demonstrated. My earlier version failed, because I used the $count parameter of str_replace in the wrong way.
code :
function str_replace_array($search, array $replace, $subject)
{
    return vsprintf(
      str_replace('[Link]', '%s', $subject),
      $replace);
}

$message = "[Link] Thanks [Link]";
echo str_replace_array(
   "[Link]",
   array("mylink1", "mylink2"), 
   $message
);
Replace a single string in file at specific position with multiple new strings

Replace a single string in file at specific position with multiple new strings


By : Paul
Date : March 29 2020, 07:55 AM
To fix this issue I want to replace a single string in a file at a specific position with some new strings. Lets say I want to search for "BAD" in a file which looks like this: , This should work:
code :
sed 's/^BAD$/BAD-1\nBAD-2\nBAD-3/' file

MAD
DAD
BAD-1
BAD-2
BAD-3
DAB
BED
awk -v n=3 '/^BAD$/{for(i=1; i<=n; i++) print "BAD-" i; next} 1' file
PHP: Optimize Find-and-replace procedure of many strings in single string

PHP: Optimize Find-and-replace procedure of many strings in single string


By : user1451641
Date : March 29 2020, 07:55 AM
I wish this help you Following @Devon's and @tadman's recommendations it's now the users obligation to take care of linking profiles. However I needed the option to link to profiles which do not exist at the time of post writing but which might be created later. Users now tag any existing or future profile when writing a post by including their name in curly braces. These are found by performing a preg_replace_callback and search the database for the profile name inside the braces.
code :
private function link_profile($name) {
    // Put your database search(es) here
    // Create link to profile
    return $link_to_profile;
}

$text = preg_replace_callback("/\{(.*)\}/Usi", "link_profile", $text);
C++ replace multiple strings in a string in a single pass

C++ replace multiple strings in a string in a single pass


By : lisa
Date : March 29 2020, 07:55 AM
around this issue I managed to implement the required replacement function using Boost.Iostreams. Specifically, the method I used was a filtering stream using regular expression to match what to replace. I am not sure about the performance on gigabyte sized files. You will need to test it of course. Anyway, here's the code:
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