--source include/not_embedded.inc
--source include/have_innodb.inc

if (`SELECT $PS_PROTOCOL != 0`)
{
   --skip Need regular protocol but ps-protocol was specified
}

SET @save_storage_engine= @@default_storage_engine;
SET default_storage_engine= InnoDB;

--echo #
--echo # MDEV-16708: Unsupported commands for prepared statements
--echo #

--echo # Disable ps-protocol explicitly in order to test support of
--echo # prepared statements for use case when statements passed
--echo # to the server via text client-server protocol (in contrast
--echo # with binary protocol used in the test file
--echo # ps_missed_cmds_bin_prot.test)
--disable_ps_protocol

--echo # Test case 20: Check that the CREATE EVENT/ALTER EVENT/DROP EVENT
--echo # statements can be executed as a prepared statement

PREPARE stmt_1 FROM "CREATE EVENT e1 ON SCHEDULE AT CURRENT_TIMESTAMP - INTERVAL 1 DAY ON COMPLETION PRESERVE DO SET @a=1";

PREPARE stmt_2 FROM "ALTER EVENT e1 COMMENT 'New comment'";

PREPARE stmt_3 FROM "DROP EVENT e1";
--echo # Create the event e1 that specifies time in past. Such event is created
--echo # just for the sake of its existence and never will be triggered.
--echo # Disable warnings temprorary in order to hide the following warnings
--echo # generated in result of execution the 'CREATE EVENT' statement:
--echo #   "1544 | Event execution time is in the past. Event has been disabled"
--echo #   "1105 | Event scheduler is switched off, use SET GLOBAL event_scheduler=ON to enable it."

--disable_warnings
EXECUTE stmt_1;

--echo # Execute the same prepared statement the second time to check that
--echo # no internal structures used for handling the 'CREATE EVENT' statement
--echo # were damaged. Execution of this statement the second time expectedly
--echo # results in emitting the error ER_EVENT_ALREADY_EXISTS since the event
--echo # with the same name has just been created.
--error ER_EVENT_ALREADY_EXISTS
EXECUTE stmt_1;

--enable_warnings

--echo # Alter event e1
EXECUTE stmt_2;
--echo # Execute the same prepared statement the second time to check that
--echo # no internal structures used for handling the 'ALTER EVENT' statement
--echo # were damaged.
EXECUTE stmt_2;

--echo # Drop event e1
EXECUTE stmt_3;
--echo # Execute the same prepared statement the second time to check that
--echo # no internal structures used for handling the 'DROP EVENT' statement
--echo # were damaged. Execution of this statement the second time expectedly
--echo # results in emitting the error ER_EVENT_DOESNT_EXIST since the event
--echo # with the same name has just been dropped.
--error ER_EVENT_DOES_NOT_EXIST
EXECUTE stmt_3;
--echo # Clean up
DEALLOCATE PREPARE stmt_1;
DEALLOCATE PREPARE stmt_2;
DEALLOCATE PREPARE stmt_3;

--echo # Test case 22: Check that the 'SHOW RELAYLOG EVENTS' statement can be
--echo # executed as a prepared statement.
PREPARE stmt_1 FROM 'SHOW RELAYLOG EVENTS';
EXECUTE stmt_1;
--echo # Execute the same prepared statement the second time to check that
--echo # no internal structures used for handling the 'SHOW RELAYLOG EVENTS'
--echo # statement were damaged.
EXECUTE stmt_1;
--echo # Clean up
DEALLOCATE PREPARE stmt_1;

--enable_warnings
--enable_ps_protocol
SET default_storage_engine= @save_storage_engine;