Remove the query_id_squash_values GUC

Commit 62d712ecfd94 introduced the capability to calculate the same
queryId for queries with different lengths of constants in a list for an
IN clause.  This behavior was originally enabled with a GUC
query_id_squash_values.  After a discussion about the value of such a
GUC, it was decided to back out of the use of a GUC and make the
squashing behavior the only available option.

Author: Sami Imseih <samimseih@gmail.com>
Discussion: https://postgr.es/m/Z-LZyygkkNyA8-kR@msg.df7cb.de
Discussion: https://postgr.es/m/CA+q6zcVTK-3C-8NWV1oY2NZrvtnMCDqnyYYyk1T7WMUG65MeOQ@mail.gmail.com

1 files changed, 0 insertions, 10 deletions

diff --git a/contrib/pg_stat_statements/sql/squashing.sql b/contrib/pg_stat_statements/sql/squashing.sql
index 56ee8ccb9a1..908be81ff2b 100644
--- a/contrib/pg_stat_statements/sql/squashing.sql
+++ b/contrib/pg_stat_statements/sql/squashing.sql
@@ -7,16 +7,7 @@ CREATE TABLE test_squash (id int, data int);
 
 -- IN queries
 
--- No squashing is performed, as a baseline result
-SELECT pg_stat_statements_reset() IS NOT NULL AS t;
-SELECT * FROM test_squash WHERE id IN (1, 2, 3, 4, 5, 6, 7, 8, 9);
-SELECT * FROM test_squash WHERE id IN (1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
-SELECT * FROM test_squash WHERE id IN (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11);
-SELECT query, calls FROM pg_stat_statements ORDER BY query COLLATE "C";
-
 -- Normal scenario, too many simple constants for an IN query
-SET query_id_squash_values = on;
-
 SELECT pg_stat_statements_reset() IS NOT NULL AS t;
 SELECT * FROM test_squash WHERE id IN (1);
 SELECT * FROM test_squash WHERE id IN (1, 2, 3);
@@ -177,4 +168,3 @@ SELECT pg_stat_statements_reset() IS NOT NULL AS t;
 SELECT ARRAY[1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
 SELECT query, calls FROM pg_stat_statements ORDER BY query COLLATE "C";
 
-RESET query_id_squash_values;