Kay and Mark, the database file size is 250Mb. The performance issue
that surprised me was the open time. Adds and Queries are as expected.
ID's currently range from 1 to 60400
URL is a typical URL that ranges from 50 to 130 characters, average is
80 char.
tag is currently not being used so empty
local is a mac file path: of the form /Volumes/EXTERNAL/XXX/xxxxxxxxx.xxx
How would I create and index? When I look at the database with
sqlitebrowser, it looks like an auto index was created.
Can you give me instructions as to how I should have created the
database with an index?
Peter, This is using livecode 7.0.6 on a Mac OSX 10.10.4. My DataBase
expertise is very limited. I created the database with sqlitebrowser,
then added the data with livecode. I don't know anything about PRAMAs
or even how to execute them. If you can provide instructions I will
give it a try.
-= Mike
On 7/21/15 11:48 PM, Kay C Lan wrote:
An example of half a dozen records please. Maybe a couple of very short, a
couple of the longest and a couple of average.
How big is the db file size - MB not record count?
On Wed, Jul 22, 2015 at 7:55 AM, Michael Doub <miked...@gmail.com> wrote:
I need some database consulting help. I have created an SQLite database
that has 4 fields:
ID, URL, tag, local. IS is integer, unique, URL is text not null unique
and tag and local are just text. I have 600,000+ records. I use the ID to
access each record in most cases or I am filtering trying to find records
based on the contents of the tag, URL or local fields.
It seems to take forever to open the database. This is normal? I am
primarily using the database to make sure that I do not have non-unique
URLs, adding performance and selects seem reasonable. I am just surprised
about the open performance Does opening the database load a lot of
information into memory thus the long delay? Could I have created the
database in someway that is not optimal, thus causing the delay?
This is not a livecode issue as I am seeing the same delay when I open the
database with sqlitebrowser.
Any advise or incites in how sqlite actually works would be appreciated.
Regards,
Mike
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