[vdr] Request: E parameter in channels.conf for epg scan

Tony Houghton h at realh.co.uk
Mon Dec 13 23:14:34 CET 2010

On 13/12/10 21:19, Udo Richter wrote:
> Am 13.12.2010 11:34, schrieb Steffen Barszus:
>> That was my point in the beginning. Then: I want to see sqlite3 being
>> less efficient on insert and fetch or memory consumption. I can not
>> imagine it (prove me wrong! ;)).
> Correct me if I'm wrong, but for sqlite you'll have to convert all these
> nice epg data structures into sql commands that need to be passed to the
> sql engine where an sql interpreter tears everything apart again for
> (possibly) on-disk storage, and for querying epg, the whole sql
> interpreter thing goes backwards again, or?

With sqlite you usually compile your SQL statements in advance and bind
different values to a compiled statement's parameters as needed. It can
also operate entirely in memory instead of with a file and there are
functions to quickly transfer databases between memory and disc. There's no
client-server overhead either, although that has the disadvantage that
it would be more difficult for another application to use the database
while VDR is running [1]. There's no problem with the data being stored in a
non-text format because of the very good sqlitebrowser.

[1] Maybe there could be an SVDRP command to execute arbitrary SQL
statements, but there'd need to be some agreed way to format the return
values for queries.

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