MySQL: Determine Table's Primary Key Dynamically

Question

I\'m, generating a SQL query like this in PHP:

$sql = sprintf(\"UPDATE %s SET %s = %s WHERE %s = %s\", ...);

Since almost every part of thi

Answer 1

Based on @jake-sully and @lukmdo answers, making a merge of their code, I finished with the following snippet:

SELECT `COLUMN_NAME`
FROM `information_schema`.`COLUMNS`
WHERE (`TABLE_SCHEMA` = DATABASE())
AND (`TABLE_NAME` = '')
AND (`COLUMN_KEY` = 'PRI');

Hope it could help someone