Hello.
I am trying to create a transaction that should insert a value
depending of the result of a select. This should be done at once by
the database in order to avoid some conflicts or duplicates.
An equivalent sql version of the transaction would be :
IF EXISTS (SELECT * FROM Table1 WHERE Column1='SomeValue')
INSERT INTO Table1 VALUES (...)
Is there a way to do that using sqlalchemy ?
Having the "if" done by python is easy but not safe and i can't find
out how to do this using some begin/commit statements.
Thanks to help !
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