I don’t understand what an index is or does in SQLite. (NOT SQL) I think it allows for sorting in acending and decending order and access to data quicker. But I’m just guessing here.
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I don’t understand what an index is or does in SQLite. (NOT SQL) I think it allows for sorting in acending and decending order and access to data quicker. But I’m just guessing here.
Why not SQL? The answer is the same, though the internal details will differ between implementations.
Putting an index on a column tells the database engine to build, unsurprisingly, an index that allows it to quickly locate rows when you search for certain values in a column, without having to scan every row in the table.
A simple (and probably suboptimal) index might be built with an ordinary binary search tree.