Hi, Aaron,
Aaron Turner wrote:
> 4) Does decoding the data (currently base64) and storing the binary
> data improve the distribution of the index, thereby masking it more
> efficent?
Yes, but then you should not use varchar, but a bytea.
If your data is some numer internally, numeric or decimal may be even
better.
If most of your data is different in the first 8 bytes, it may also make
sense to duplicate them into a bigint, and create the bigint on them.
Then you can use AND in your query to test for the 8 bytes (uses index)
and the bytea. Ugly, but may work.
HTH,
Markus
--
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf. | Software Development GIS
Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org
