问题
I'm writing a dictionary app and need to do the usual word suggesting while typing.
LIKE somestring% is rather slow (~1300ms on a ~100k row table) so I've turned to FTS3.
Problem is, I haven't found a sane way to search from the beginning of a string.
Now I'm performing a query like
SELECT word, offsets(entries) FROM entries WHERE word MATCH '"chicken *"';
, then parse the offsets string in code.
Are there any better options?
回答1:
Yes, make sure to set the index on field word and use
word >= 'chicken ' AND word < 'chicken z'
instead of LIKE or MATCH or GLOB
来源：https://stackoverflow.com/questions/2734828/sqlite-fts3-simulate-like-somestring