The indexes on a the tables of a large database make a huge difference in its performance and utility. Without an index, locating a single record in a large table can take several seconds; with the ...

Creates indexes on columns in tables. Restriction: You cannot use CREATE INDEX on a table accessed via an engine that does not support UPDATE processing. an IN subquery where the column in the inner ...

There's two answers to this question, the short answer and the long answer (which includes a follow-up question). The short answer is yes For the longer answer, let's start with the follow-up question ...