thanks very much for the response. Are there any special commands to analyze the index before using the table. If i rename the table, will the indexes still stay with the table ( i hope so).
* david drummard (vijayspam@gmail.com) wrote: > My question is what is the best way to do step (1) so that after the copy is > done, the table is fully indexed and properly balanced and optimized for > query. > Should i create indexes before or after import ? I need to do this in > shortest period of time so that the data is always uptodate. Note that > incremental updates are not possible since almost every row will be changed > in the new file.
Create indexes after import, definitely. analyze after indexes have been created. You don't need to vacuum if you're creating a whole new table each time. Remember that if you need to adjust analyze parameters for some reason that you'll need to do that on every table creation as well. Using COPY is a good approach. Not doing incremental updates when most of the rows are changing also makes sense.
