Just a few notes on joining a MySQL table to itself to get unique combination of data stored in its fields. Suppose we have a MySQL table named `keywords` having fields `word1`, `word2` and `word3`. Once we have got a…
Just a few notes on joining a MySQL table to itself to get unique combination of data stored in its fields. Suppose we have a MySQL table named `keywords` having fields `word1`, `word2` and `word3`. Once we have got a…