comment on

By summing, I mean that if I had all of the records in a table without tstamp as a primary key, but wanted to create a new table that was modifiable to have it, I would:

Create table new_table as select tstamp, sum(op100), sum(op700), sum(total) from old_table group by tstamp

And then add my primary key rule

The script runs every fifteen minutes. The data is from a web services broker that appears to only put one of 8 or 9 opcode types per file. so you'll see a file with 4-5k of WAP 1.X requests followed by a bunch of files that have 2 or 4 (no k) ldap updates or other such maintenance traffic, followed by a file with 2-4k of WAP 2.0 requests... All in All, I end up with a couple thousand files per day and I'm pulling around 800-850k lines of data and digesting it down to a max of 86,400. I'm thinking that I'm running about 1500 pk violations per day, which is why I can to the conclusion that my original algorithm was too inefficient.

I don't think IGNORE is a valid option, because I don't want to lose any data. And it appears I was remembering Oracle when I thought it would write erring records to a file... or it was just wishful thinking.

Since I know my range of time stamps and they should be limited to a query size of ~900 per run, that LanceDeeply's suggestion is my best option.

Thanks!

jimbus

Never moon a werewolf!

In reply to Re: DBI vs Bulk Loading by jimbus
in thread DBI vs Bulk Loading by jimbus

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.


"be consistent"
	PerlMonks