Hello, Postgres supports to add custom GUC variables on runtime, but we cannot use GUC flags in them. This patch adds the flags argument to DefineCusomXxx() functions. The flags were always 0 until now.
GUC flags are useful for variables with units. Users will be able to add configuration parameters somothing like memory-size or time-duration more easily. I have a plan to use the feature in SQL tracing and analyzing add-on for postgres. Also, the auto-explain patch suggested in the last commit-fest could be re-implemented as a plug-in instead of a core-feature using the custom variable with units and ExecutorRun_hook. Regards, --- ITAGAKI Takahiro NTT Open Source Software Center
custom_guc_flags.patch
Description: Binary data
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