Re: Case insensitive search in utf8 db
Posted by: Peter Brawley
Date: December 01, 2019 02:00PM

> The db is already created.

All new dbs have errors. When found, they need to be corrected.

(For a basic intro on database design see https://www.artfulsoftware.com/dbdesignbasics.html.)

> The table has a column with names
> (first and last nane in the same column,
> sometimes first name leads, sometimes follows
> last name. wrong or right?

Wrong, breaks atomicity---an elementary normalisation error.

> They asked me to find a way to do search in these columns.

If they don't know normalisation, they've no business designing databases.

> You mentioned to create a table with the triples.

It's a just a wee test/demonstration table for values that are case-insensitively equal but case-sensitively unequal. Its only purpose is to find whether your problem is specific to the db or table you referenced, or in in your server

> I can't make it. I do not have the data to create it.

Eh? Creating it needs no data. Populating it needs just the wee script I posted.

> They only said they succeeded without table like yours.

Meaningless---it's just just a temporary diagnostic device. It's not designed to accept your data.

Again, let's see the result of running my script on your server. Use the mysql client program.



Edited 1 time(s). Last edit at 12/01/2019 02:35PM by Peter Brawley.

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