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Search and replace part of string in database - what are the pitfalls?


Search and replace part of string in database - what are the pitfalls?

By : user2953463
Date : November 21 2020, 01:01 AM
Hope this helps Just create a test table, as a replica of your original source table, complete the update on there and check results.
You would want to do this as good SQL programming practice to ensure you don't mess up columns that should not be updated.
code :


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Search and replace part of string in database

Search and replace part of string in database


By : anup
Date : March 29 2020, 07:55 AM
Hope that helps I need to replace all iframe tags, stored as nvarchar in my database. I can find the entries using the following sql-question: , I think 2 update calls should do
code :
update VersionedFields
set Value = replace(value,'<iframe','<a><iframe')

update VersionedFields
set Value = replace(value,'> </iframe>','</a>')
How to do a search and replace of a part of a string in all columns in all tables in an sql database

How to do a search and replace of a part of a string in all columns in all tables in an sql database


By : user2057883
Date : March 29 2020, 07:55 AM
it should still fix some issue Not easily, though I can thing of two ways to do it:
Write a series of stored procedures that identify all varchar and text columns of all tables, and generate individual update statements for each column of each table of the form "UPDATE foo SET BAR = REPLACE(BAR,'foobar','quux')". This will probably involve a lot of queries against the system tables, with a lot of experimentation -- Microsoft doesn't go out of its way to document this stuff. Export the entire database to a single text file, do a search/replace on that, and then re-import the entire database. Given that you're using MS SQL Server, this is actually the easier approach. Microsoft created the Microsoft SQL Server Database Publishing Wizard for other reasons, but it makes a fine tool for exporting all of the tables of a SQL Server database as a text file containing pure SQL DDL and DML. Run the tool to export all of the tables for a database, edit the resulting file as you need, and then feed the file back to sqlcmd to recreate the database.
Java - Search and Replace part of a String

Java - Search and Replace part of a String


By : ariel maniago
Date : March 29 2020, 07:55 AM
will be helpful for those in need You're assuming that strings are mutable. They're not. Calling replace and then ignoring the return value will do nothing useful. You want:
code :
Line = Line.replace(Counterstring, Replace);
for (int counter = 1; counter <= 300; counter++) {
    line = line.replace("1.", "0.");
}
for (int counter = 1; counter <= 300; counter++) {
    line = line.replace(counter + ".", (counter - 1) + ".");
}
Search and replace part of string

Search and replace part of string


By : user3474560
Date : March 29 2020, 07:55 AM
this one helps. I would like to know how to replace the a part of a value which is stored into a columns named "keyword_data" in the table "keyword". , Just do:
code :
  UPDATE keyword SET keyword_data = REPLACE( keyword_data , '?tag=mytag' , '&tag=mytag') 
         WHERE keyword_data LIKE '%?tag=mytag%';
Part of string search and replace in Node JS

Part of string search and replace in Node JS


By : Varsha Ranka
Date : March 29 2020, 07:55 AM
it fixes the issue You can do this
.replace(/-.*$/, '') will check for -{anything} at the end of the string and replace with nothing.
code :
const strs = [
  'xyz-v1.0.0#',
  'abc-v2.0.0#',
  'def-v1.1.0#'
];
const newStrs = strs.map(str => str.replace(/-.*$/, ''));
console.log(newStrs);
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