How can I use mySQL replace() to replace strings in multiple records?

At a very generic level UPDATE MyTable SET StringColumn = REPLACE (StringColumn, ‘SearchForThis’, ‘ReplaceWithThis’) WHERE SomeOtherColumn LIKE ‘%PATTERN%’ In your case you say these were escaped but since you don’t specify how they were escaped, let’s say they were escaped to GREATERTHAN UPDATE MyTable SET StringColumn = REPLACE (StringColumn, ‘GREATERTHAN’, ‘>’) WHERE articleItem LIKE ‘%GREATERTHAN%’ … Read more

What flavor of Regex does Visual Studio Code use?

Rust Regex in the Find/Replace in Files Sidebar Rob Lourens of MSFT wrote that the file search uses Rust regex. The Rust language documentation describes the syntax. JavaScript Regex in the Find/Replace in File Widget Alexandru Dima of MSFT wrote that the find widget uses JavaScript regex. As Wicktor commented, ECMAScript 5’s documentation describes the … Read more

Conditional Replace Pandas

.ix indexer works okay for pandas version prior to 0.20.0, but since pandas 0.20.0, the .ix indexer is deprecated, so you should avoid using it. Instead, you can use .loc or iloc indexers. You can solve this problem by: mask = df.my_channel > 20000 column_name=”my_channel” df.loc[mask, column_name] = 0 Or, in one line, df.loc[df.my_channel > … Read more

Speed up millions of regex replacements in Python 3

TLDR Use this method if you want the fastest regex-based solution. For a dataset similar to the OP’s, it’s approximately 1000 times faster than the accepted answer. If you don’t care about regex, use this set-based version, which is 2000 times faster than a regex union. Optimized Regex with Trie A simple Regex union approach … Read more