Hrm... so it is going to need to rebuild all the indexes, not just the table I am adding... doh... oh well, should still be faster, I'd guess. Probably my best bet in this case is to create a new merged table with the new table and all the other old ones, then replace the old merged table with the new merged table.
I will try it out tomorrow and see... no problems with it being the same, I will be generating the tables from a perl script :) On Thu, Nov 15, 2001 at 03:04:35PM -0800, Bill Adams wrote: > "Anthony R. J. Ball" wrote: > > > Ok, so to follow... Paul Dubois told me the little > > RENAME TABLE trick to swap out a table... Will that work > > on a table in a MERGE, or are there different hoops to > > jump through? > > Your table names need to be unique. Then it should work just fine. > > o If you do rename a table that is part of the merge, you will need to rebuild > the merge table. > > o If you want to reindex the tables that are merged, be sure to either drop the > index in the merge table or drop the merge table BEFORE you reindex the real > tables. This is not fatal if you forget: just you might get weird errors. > > o If you do a SELECT ... WHERE indexed_column=value and get back a bunch of > records where everything is blank, your indexes (or possibly columns) are not the > same between the real tables and/or merge table. Remember ORDER MATTERS! > > b. > > > > > > > > > > On Thu, Nov 15, 2001 at 02:01:44PM -0800, Bill Adams wrote: > > > "Anthony R. J. Ball" wrote: > > > > > > > I was just reading DOCS for MERGE tables... and they > > > > look like exactly what I want. > > > > > > > > I have a large lookup table that I use to track down > > > > where I want to find my data, which gets loaded into > > > > different tables at different times of the day > > > > (financial data). Now I am loading all the data into > > > > one table, but since this table needs to stay available > > > > I have to insert into it with lots of keyed data. > > > > > > > > I am thinking that I can create a new table, and > > > > replace the proper underlying table with the new > > > > data. That way I don't slow doen the lookup table > > > > when I am loading, and I can load my data MUCH faster > > > > by loading with no keys. > > > > > > > > Am I right in thinking this way. So I can make > > > > a muni lookup and a CMO lookup and an MBS lookup > > > > but just select from the merged table for a cusip > > > > in any of them? > > > > > > > > This is all read only data (except the initial load) > > > > > > > > This would be very good... since I want the data to > > > > load quick, and may be loading hundreds of thousands > > > > of records at a time. > > > > > > > > > > Merge table sound like they fit the bill. Beware that they are very finicky > > > and the columns MUST be the same and the index order must be the same. > > > Search the lists (esp. for my name) for more info. > > > > > > b. > > > > > > > > > > -- > > ___ __ __ __ _ _ ____ _ _ ____ ____ > > / __)( )( ) /__\( \/ )( ___) ( \( )( ___)(_ _) > > \__ \ )(__)( /(__)\\ / )__) ) ( )__) )( > > (___/(______)(__)(__)\/ (____)()(_)\_)(____) (__) > > Once I thought I was wrong - but I was mistaken > > -- > Bill Adams > TriQuint Semiconductor > > > > > --------------------------------------------------------------------- > Before posting, please check: > http://www.mysql.com/manual.php (the manual) > http://lists.mysql.com/ (the list archive) > > To request this thread, e-mail <[EMAIL PROTECTED]> > To unsubscribe, e-mail <[EMAIL PROTECTED]> > Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php > -- ___ __ __ __ _ _ ____ _ _ ____ ____ / __)( )( ) /__\( \/ )( ___) ( \( )( ___)(_ _) \__ \ )(__)( /(__)\\ / )__) ) ( )__) )( (___/(______)(__)(__)\/ (____)()(_)\_)(____) (__) I don't suffer from insanity, I enjoy every minute of it. --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
