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When I'm selecting data from multiple tables I used to use JOINS a lot and recently I started to use another way but I'm unsure of the impact in the long run.
Examples:
SELECT * FROM table_1 LEFT JOIN table_2 ON (table_1.column = table_2.column)
So this is your basic LEFT JOIN across tables but take a look at the query below.
SELECT * FROM table_1,table_2 WHERE table_1.column = table_2.column
Personally if I was joining across lets say 7 tables of data I would prefer to do this over JOINS.
But are there any pros and cons in regards to the 2 methods ?