Will the iPhone OpenGL take advantage of vector animation?

Question

I've noticed on Windows Mobile devices any type of movement, zooming or animation lags big time. I was wondering if OpenGL on the iPhone will help with this?

Answer 1

Hi,
Sorry, you can only get the full benefit of indexes if you know the starting portion of the indexed value.
That is, if there's an index on column_x, then you might do an index look-up to resolve
where COLUMN_X like 'ORACLE%'     -- end is unknownbut not
where COLUMN_X like '%ORACLE'     -- beginning is unknownIf the entire query can be done by just looking at the index, then the index may help some. For example, in
SELECT  COUNT (column_x)
FROM    table_a
where   COLUMN_X like '%ORACLE%';the optimizer may choose to do a full scan of the index rather than a full scan of the table.
Say you have 100,000 rows in the table, which occupies 1,000 blocks. Say the index occupies 50 blocks. A full scan of the index would be about 20 times faster than scanning the entire table, regardless of how many rows actually matched. There might only be one like '%ORACLE%, or there might be none, but you'd still have to read the entire index to find out.