Clarify what some historic terms in rewriteHandler.c mean.

Discussion: 20150827131352.GF2435@awork2.anarazel.de

Clarify what some historic terms in rewriteHandler.c mean.
Discussion: 20150827131352.GF2435@awork2.anarazel.de
c0f0d809 · Andres Freund · c86762a2 · c0f0d809
Commit c0f0d809 authored 9 years ago by Andres Freund
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src/backend/rewrite/rewriteHandler.c src/backend/rewrite/rewriteHandler.c +7 -0

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--- a/src/backend/rewrite/rewriteHandler.c
+++ b/src/backend/rewrite/rewriteHandler.c
@@ -9,6 +9,13 @@
 * IDENTIFICATION
 *	  src/backend/rewrite/rewriteHandler.c
 *
+ * NOTES
+ *	  Some of the terms used in this file are of historic nature: "retrieve"
+ *	  was the PostQUEL keyword for what today is SELECT. "RIR" stands for
+ *	  "Retrieve-Instead-Retrieve", that is an ON SELECT DO INSTEAD SELECT rule
+ *	  (which has to be unconditional and where only one rule can exist on each
+ *	  relation).
+ *
 *-------------------------------------------------------------------------
 */
 #include "postgres.h"