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Whats the most efficient way to search for a sub string in SQLite?
I'm looking at the LIKE operator.
Do I have the right idea? Has this worked well for you?
http://www.sqlite.org/lang_expr.html
Thank You.
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The SQLite substr function returns a substring from a string starting at a specified position with a predefined length.
SQLite LIKE examplesTo find the tracks whose names start with the Wild literal string, you use the percent sign % wildcard at the end of the pattern. To find the tracks whose names end with Wild word, you use % wildcard at the beginning of the pattern.
To Search for the values define edit text and implement text watcher in database enter a query as shown below: editText. addTextChangedListener(new TextWatcher(){ Cursor cusror; cursor=db. rawQuery("SELECT * FROM "+ DB_NAME + " WHERE " + DB_NAME.id + " = " + DB_NAME.Id + " AND " + DB_NAME.
Using a common table expression it is possible to reverse a string in SQLite. WITH reverse(i, c) AS ( values(-1, '') UNION ALL SELECT i-1, substr('dlrow olleh', i, 1) AS r FROM reverse WHERE r!= '' ) SELECT group_concat(c, '') AS reversed FROM reverse; Returns hello world .
Yepper, use Like. Select id from sometable where name like '%omm%' would return any row that had 'omm' anywhere in the name column.
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You can use LIKE, but it gets really slow if the pattern you're searching for starts with '%' -- i.e., if the substring you're looking for isn't necessarily at the beginning of the field.
If you need to do such searches, consider using FTS3, which makes full-text searching considerably more efficient.
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