Op donderdag 7 oktober 2004 21:50, schreef Patrick Peccatte: > I use SQLite 2.8.14 for a documentation application which needs a lot of > text search. > Text searchs are done using somethink like: > SELECT * FROM Texts WHERE CurrentText LIKE '%string to search%'; > I use index on every searchable columns. > Response time are acceptable until about 100000 texts stored in database, > but are very very long with 500000 texts in database. > Is exist any method to improve this kind of search ? > -- > Patrick Peccatte - Soft Experience
SQLite does not use indices on LIKE operator, if you want to do text searches, you better create an algoritm to use something like %word-list-index% You can do text searcha t the beginning of a string select..... where text>=" aa" and text<="aa", it finds all words starting with aa, and uses indexes regards Bert Verhees
