[HACKERS] [PATCH] Make ExplainOpenGroup()/ExplainCloseGroup() available for extensions.

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От	Hadi Moshayedi
Тема	[HACKERS] [PATCH] Make ExplainOpenGroup()/ExplainCloseGroup() available for extensions.
Дата	25 июля 2017 г. 20:27:33
Msg-id	CA+_kT_dU-rHCN0u6pjA6bN5CZniMfD=-wVqPY4QLrKUY_uJq5w@mail.gmail.com обсуждение исходный текст
Список	pgsql-hackers

Дерево обсуждения

Hello Hackers,

The attached patch moves declarations of ExplainOpenGroup()/ExplainCloseGroup() from explain.c to explain.h.

This can be useful for extensions that need explain groups in their custom-scan explain output.

For example, Citus uses groups in its custom explain outputs [1]. But it achieves it by having a copy of ExplainOpenGroup()/ExplainCloseGroup() in its source code, which is not the best way.

Please review.

[1] https://github.com/citusdata/citus/blob/master/src/backend/distributed/planner/multi_explain.c

Thanks,

Hadi