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Michael Paquier 1fd981f053 Drop unnamed portal immediately after execution to completion ... Previously, unnamed portals were kept until the next Bind message or the end of the transaction. This could cause temporary files to persist longer than expected and make logging not reflect the actual SQL responsible for the temporary file. This patch changes exec_execute_message() to drop unnamed portals immediately after execution to completion at the end of an Execute message, making their removal more aggressive. This forces temporary file cleanups to happen at the same time as the completion of the portal execution, with statement logging correctly reflecting to which statements these temporary files were attached to (see the diffs in the TAP test updated by this commit for an idea). The documentation is updated to describe the lifetime of unnamed portals, and test cases are updated to verify temporary file removal and proper statement logging after unnamed portal execution. This changes how unnamed portals are handled in the protocol, hence no backpatch is done. Author: Frédéric Yhuel <frederic.yhuel@dalibo.com> Co-Authored-by: Sami Imseih <samimseih@gmail.com> Co-Authored-by: Mircea Cadariu <cadariu.mircea@gmail.com> Discussion: https://postgr.es/m/CAA5RZ0tTrTUoEr3kDXCuKsvqYGq8OOHiBwoD-dyJocq95uEOTQ%40mail.gmail.com		2 months ago
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src	Drop unnamed portal immediately after execution to completion	2 months ago
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