How to search if whole word exists in a String in Postgres

Question

I have a table with a column field that has values like Samsung Phone.

My question is how can I get this row if I search for a string \"Samsung\" or \"phone

Answer 1

You can use a regular expression for this:

where title ~* '(\mphone\M)|(\msamsung\M)'

The above only returns values where phone or samsung are complete words. The regex modifiers\m and \M make the pattern only match for whole words.

The regex operator ~* makes this case-insensitive. The above expression would return Samsung Phone or Google Phone but not Sam's House.

If you want to add more words, just add them using the "or" operator |

where title ~* '(\mphone\M)|(\msamsung\M)|(\mbhat\M)'

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Note that this kind of search is not going t1o be super-fast. Regular expressions are expensive they cannot make use of any index.