【0317】Postgres内核之VACUUM (FULL)通用 utility function invoker (12)

1. utility function invoker

ProcessUtility()函数是“通用实用函数调用器(general utility function invoker)”。该函数原型如下:

void ProcessUtility(PlannedStmt *pstmt,
			   const char *queryString,
			   ProcessUtilityContext context,
			   ParamListInfo params,
			   QueryEnvironment *queryEnv,
			   DestReceiver *dest,
			   QueryCompletion 

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