topic Re: How to clear / truncate a table without doing an insert? in Talend Studio

How to clear / truncate a table without doing an insert?

Anonymous — Sat, 16 Nov 2024 13:28:33 GMT

I have a job where I want to clear the destination MySQL table at the start of the whole job. I can't use the "Clear table" action-on-table setting on the MySQL output component because the job iterates through a series of inserts, and if I use that then each insert also clears the results of the previous inserts in *this* execution (I am only trying to clear the results of *previous* executions). Please see the attached pic for a clearer explanation.
So basically, how can I easily clear the entire table before I even start?
Any help much appreciated.

Re: How to clear / truncate a table without doing an insert?

Anonymous — Mon, 05 Apr 2010 17:32:03 GMT

Actually don't worry, I figured it out ... you use the tMysqlRow component to just execute arbitrary SQL with a "truncate" statement in it.

Re: How to clear / truncate a table without doing an insert?

Anonymous — Wed, 20 Feb 2019 08:55:03 GMT

Hey,

Actually I wanted to implement a similar case. How does the connection look like?

Thanks!

Re: How to clear / truncate a table without doing an insert?

Anonymous — Wed, 20 Feb 2019 09:04:02 GMT

@Harguna

The action on Table will happen only once per execution and not at individual row.

Lets stick to your other post since we are already interacting there.

https://community.talend.com/t5/Design-and-Development/How-do-I-clear-a-table-in-TOS-before-transferring-data-into-it/m-p/151602#M92658

Warm Regards,
Nikhil Thampi

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