Use events with expression api

[brian...@blue-newt.com]

Is there a way to use events with the expression api? I see how they're used with ORM and Core but not expressions.

Thanks,

Brian

[Mike Bayer]

SQL expressions are intercepted by the SQL Execution events described at https://docs.sqlalchemy.org/en/13/core/events.html#sql-execution-and-connection-events and the main ones are before_execute() and before_cursor_execute(), but it depends on what you want to do.    if you want to change how expressions are compiled to strings you would redefine their compilation as described at https://docs.sqlalchemy.org/en/13/core/compiler.html.

On Wed, Sep 30, 2020, at 9:27 PM, brian...@blue-newt.com wrote:

Is there a way to use events with the expression api?

I see how they're used with ORM and Core, but not expressions.

Thanks,

Brian

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[Brian Hill]

I was to associate/call functions when specific tables and columns are updated.

Sent from my iPad

On Sep 30, 2020, at 5:03 PM, Mike Bayer <mik...@zzzcomputing.com> wrote:



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