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Hi to all,

 

I have an issue...

I will have a CSV file with the latest DB updates. I need to find the best practice for synchronizing my DB with the CSV using the least (execution time) queries possible.

 

The current script, for each user in the CSV:

Checks if he exists in the DB. If he exists it updates him, else it creates him.

That means it executes two queries for each user in the CSV.

 

I wonder how else can it be done...

 

Btw the script runs ok and has an execution time of 21.1.... seconds for importing 1000 users in the DB.

 

Regards,

Kathas

Have a look here:

http://dev.mysql.com/doc/refman/5.0/en/load-data.html

 

I recommend using that to read into a temp table and then using:

INSERT ... SELECT

from the temp table into your final tables.

 

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