Added enable_nestloop parameter

include/proxysql_structs.h

@@ -259,6 +259,7 @@ enum pgsql_variable_name {
 	PGSQL_CLIENT_MIN_MESSAGES,
 	PGSQL_ENABLE_BITMAPSCAN,
 	PGSQL_ENABLE_INDEXSCAN,
+	PGSQL_ENABLE_NESTLOOP,
 	PGSQL_ENABLE_SEQSCAN,
 	PGSQL_ENABLE_SORT,
 	PGSQL_ESCAPE_STRING_WARNING,
@@ -1778,6 +1779,7 @@ pgsql_variable_st pgsql_tracked_variables[] {
 	{ PGSQL_CLIENT_MIN_MESSAGES,   SETTING_VARIABLE,	"client_min_messages", "client_min_messages", "NOTICE", (PGTRACKED_VAR_OPT_QUOTE | PGTRACKED_VAR_OPT_GLOBAL_VARIABLE), nullptr },
 	{ PGSQL_ENABLE_BITMAPSCAN,	   SETTING_VARIABLE,	"enable_bitmapscan", "enable_bitmapscan", "on", (PGTRACKED_VAR_OPT_BOOL | PGTRACKED_VAR_OPT_GLOBAL_VARIABLE), nullptr },
 	{ PGSQL_ENABLE_INDEXSCAN,	   SETTING_VARIABLE,	"enable_indexscan", "enable_indexscan", "on", (PGTRACKED_VAR_OPT_BOOL | PGTRACKED_VAR_OPT_GLOBAL_VARIABLE), nullptr },
+	{ PGSQL_ENABLE_NESTLOOP,	   SETTING_VARIABLE,	"enable_nestloop", "enable_nestloop", "on", (PGTRACKED_VAR_OPT_BOOL | PGTRACKED_VAR_OPT_GLOBAL_VARIABLE), nullptr },
 	{ PGSQL_ENABLE_SEQSCAN,		   SETTING_VARIABLE,	"enable_seqscan", "enable_seqscan", "on", (PGTRACKED_VAR_OPT_BOOL | PGTRACKED_VAR_OPT_GLOBAL_VARIABLE), nullptr },
 	{ PGSQL_ENABLE_SORT,		   SETTING_VARIABLE,	"enable_sort", "enable_sort", "on", (PGTRACKED_VAR_OPT_BOOL | PGTRACKED_VAR_OPT_GLOBAL_VARIABLE), nullptr },
 	{ PGSQL_ESCAPE_STRING_WARNING, SETTING_VARIABLE,    "escape_string_warning", "escape_string_warning", "on", (PGTRACKED_VAR_OPT_BOOL | PGTRACKED_VAR_OPT_GLOBAL_VARIABLE), nullptr },

lib/PgSQL_Session.cpp

@@ -82,6 +82,7 @@ static const std::set<std::string> pgsql_variables_boolean = {
 	"standard_conforming_strings",
 	"enable_bitmapscan",
 	"enable_indexscan",
+	"enable_nestloop",
 	"enable_seqscan",
 	"enable_sort",
 	"escape_string_warning",