MDEV-30378 Versioned REPLACE succeeds with ON DELETE RESTRICT constraint

node->is_delete was incorrectly set to NO_DELETE for a set of operations.

In general we shouldn't rely on sql_command and look for more abstract ways
to control the behavior.

trg_event_map seems to be a suitable way. To mind replica nodes, it is ORed
with slave_fk_event_map, which stores trg_event_map when replica has
triggers disabled.

mysql-test/suite/versioning/r/foreign.result

@@ -493,3 +493,42 @@ set foreign_key_checks= on;
 delete history from t1;
 delete from t1;
 drop table t1;
+#
+# MDEV-30378 Versioned REPLACE succeeds with ON DELETE RESTRICT
+# constraint
+#
+create table t0 (pk integer primary key) with system versioning engine=innodb;
+create table t1 (pk integer primary key,
+foreign key(pk) references t0(pk)
+on delete restrict on update cascade) engine=innodb;
+create table t2 (pk integer);
+insert into t0 (pk) values (1);
+insert into t1 (pk) values (1);
+insert into t2 (pk) values (1);
+delete from t0;
+ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t1`, CONSTRAINT `t1_ibfk_1` FOREIGN KEY (`pk`) REFERENCES `t0` (`pk`) ON UPDATE CASCADE)
+replace t0 values (1);
+ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t1`, CONSTRAINT `t1_ibfk_1` FOREIGN KEY (`pk`) REFERENCES `t0` (`pk`) ON UPDATE CASCADE)
+select * into outfile 'load_t0' from t0 ;
+load data infile 'load_t0' replace into table t0;
+ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t1`, CONSTRAINT `t1_ibfk_1` FOREIGN KEY (`pk`) REFERENCES `t0` (`pk`) ON UPDATE CASCADE)
+delete t0, t2 from t0 join t2;
+ERROR 23000: Cannot delete or update a parent row: a foreign key constraint fails (`test`.`t1`, CONSTRAINT `t1_ibfk_1` FOREIGN KEY (`pk`) REFERENCES `t0` (`pk`) ON UPDATE CASCADE)
+select pk from t0;
+pk
+1
+# Cleanup
+drop table t1, t0, t2;
+# create_select for a temporary table didn't set up pos_in_locked_tables.
+create table t (a int unique) engine=innodb
+replace select 1 as a, 2 as b union select 1 as a, 3 as c;
+select * from t;
+a	b
+1	3
+drop table t;
+create temporary table t (a int unique) engine=innodb
+replace select 1 as a, 2 as b union select 1 as a, 3 as c;
+select * from t;
+a	b
+1	3
+drop table t;

mysql-test/suite/versioning/t/foreign.test

@@ -527,4 +527,50 @@ delete from t1;
 # cleanup
 drop table t1;
 
+--echo #
+--echo # MDEV-30378 Versioned REPLACE succeeds with ON DELETE RESTRICT
+--echo # constraint
+--echo #
+create table t0 (pk integer primary key) with system versioning engine=innodb;
+create table t1 (pk integer primary key,
+                 foreign key(pk) references t0(pk)
+                            on delete restrict on update cascade) engine=innodb;
+create table t2 (pk integer);
+
+insert into t0 (pk) values (1);
+insert into t1 (pk) values (1);
+insert into t2 (pk) values (1);
+
+--error ER_ROW_IS_REFERENCED_2
+delete from t0;
+
+--error ER_ROW_IS_REFERENCED_2
+replace t0 values (1);
+
+select * into outfile 'load_t0' from t0 ;
+--error ER_ROW_IS_REFERENCED_2
+load data infile 'load_t0' replace into table t0;
+
+--error ER_ROW_IS_REFERENCED_2
+delete t0, t2 from t0 join t2;
+
+select pk from t0;
+
+--echo # Cleanup
+drop table t1, t0, t2;
+--let $datadir= `select @@datadir`
+--remove_file $datadir/test/load_t0
+
+
+--echo # create_select for a temporary table didn't set up pos_in_locked_tables.
+create table t (a int unique) engine=innodb
+    replace select 1 as a, 2 as b union select 1 as a, 3 as c;
+select * from t;
+drop table t;
+
+create temporary table t (a int unique) engine=innodb
+    replace select 1 as a, 2 as b union select 1 as a, 3 as c;
+select * from t;
+drop table t;
+
 --source suite/versioning/common_finish.inc

sql/sql_insert.cc

@@ -4396,6 +4396,7 @@ TABLE *select_create::create_table_from_items(THD *thd,
         */
         DBUG_ASSERT(0);
       }
+      create_table->table->pos_in_table_list= create_table;
     }
   }
   else

storage/innobase/handler/ha_innodb.cc

@@ -8957,10 +8957,12 @@ ha_innobase::update_row(
 		const bool vers_ins_row = vers_set_fields
 			&& thd_sql_command(m_user_thd) != SQLCOM_ALTER_TABLE;
 
+                TABLE_LIST *tl= table->pos_in_table_list;
+                uint8 op_map= tl->trg_event_map | tl->slave_fk_event_map;
 		/* This is not a delete */
 		m_prebuilt->upd_node->is_delete =
 			(vers_set_fields && !vers_ins_row) ||
-			(thd_sql_command(m_user_thd) == SQLCOM_DELETE &&
+			(op_map & trg2bit(TRG_EVENT_DELETE) &&
 				table->versioned(VERS_TIMESTAMP))
 			? VERSIONED_DELETE
 			: NO_DELETE;