Update C comment for pg_attribute.attislocal

Indicates if column has ever been local/non-inherited
11 years ago · c6eaa880ee
parent 01363beae5
commit c6eaa880ee
1 changed files with 5 additions and 1 deletions
--- a/src/include/catalog/pg_attribute.h
+++ b/src/include/catalog/pg_attribute.h
@ -136,7 +136,11 @@ CATALOG(pg_attribute,1249) BKI_BOOTSTRAP BKI_WITHOUT_OIDS BKI_ROWTYPE_OID(75) BK
 	/* Is dropped (ie, logically invisible) or not */
 	bool		attisdropped;

-	/* Has a local definition (hence, do not drop when attinhcount is 0) */
+	/*
+	 * Has a local definition (hence, do not drop when attinhcount is 0)
+	 * This is set and remains set if the column was _ever_
+	 * local/not-inherited, e.g. this can be set by ALTER TABLE NO INHERIT.
+	 */
 	bool		attislocal;

 	/* Number of times inherited from direct parent relation(s) */