I love use the index luke. Some of the best query advice I can get when I have to get something done faster. Personally, the most important part of getting ad

I love use the index luke. Some of the best query advice I can get when I have to get something done faster. Personally, the most important part of getting advanced with SQL is being able to vizualize the DB in your mind and how the query should look. Also, sometimes bad design is at fault than a query. If the design is too complicated or wrong a query is gonna be slow in relation to the amount of data it has to go over.