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Change the name of the Result Cache node to Memoize

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"Result Cache" was never a great name for this node, but nobody managed
to come up with another name that anyone liked enough.  That was until
David Johnston mentioned "Node Memoization", which Tom Lane revised to
just "Memoize".  People seem to like "Memoize", so let's do the rename.

Reviewed-by: Justin Pryzby
Discussion: https://postgr.es/m/20210708165145.GG1176@momjian.us
Backpatch-through: 14, where Result Cache was introduced
This commit is contained in:
David Rowley
2021-07-14 12:43:58 +12:00
parent d68a003912
commit 83f4fcc655
43 changed files with 594 additions and 605 deletions
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6
contrib/postgres_fdw/expected/postgres_fdw.out
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@ -1602,7 +1602,7 @@ SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) FULL
20 | 0 | AAA020
(10 rows)
SET enable_resultcache TO off;
SET enable_memoize TO off;
-- right outer join + left outer join
EXPLAIN (VERBOSE, COSTS OFF)
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
@ -1629,7 +1629,7 @@ SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 RIGHT JOIN ft2 t2 ON (t1.c1 = t2.c1) LEFT
20 | 0 | AAA020
(10 rows)
RESET enable_resultcache;
RESET enable_memoize;
-- left outer join + right outer join
EXPLAIN (VERBOSE, COSTS OFF)
SELECT t1.c1, t2.c2, t3.c3 FROM ft2 t1 LEFT JOIN ft2 t2 ON (t1.c1 = t2.c1) RIGHT JOIN ft4 t3 ON (t2.c1 = t3.c1) OFFSET 10 LIMIT 10;
@ -2149,7 +2149,7 @@ SELECT t1."C 1" FROM "S 1"."T 1" t1, LATERAL (SELECT DISTINCT t2.c1, t3.c1 FROM
Output: t1."C 1"
-> Index Scan using t1_pkey on "S 1"."T 1" t1
Output: t1."C 1", t1.c2, t1.c3, t1.c4, t1.c5, t1.c6, t1.c7, t1.c8
-> Result Cache
-> Memoize
Cache Key: t1.c2
-> Subquery Scan on q
-> HashAggregate