mysql> show variables like '%trust%';
+---------------------------------+-------+
| Variable_name | Value |
+---------------------------------+-------+
| log_bin_trust_function_creators | OFF |
+---------------------------------+-------+
1 row in set (0.03 sec)
mysql> use course;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> delimiter //
mysql> select * from students;
-> //
+-----+--------+--------+---------+---------------------+
| sid | sname | gender | dept_id | brithday |
+-----+--------+--------+---------+---------------------+
| 1 | Andrew | 0 | 1 | 1983-01-01 00:00:00 |
| 2 | Andy | 0 | 1 | 1983-01-01 00:00:00 |
| 3 | Bob | 0 | 1 | 1983-01-01 00:00:00 |
| 4 | Ruth | 1 | 2 | 1983-01-01 00:00:00 |
| 5 | Mike | 0 | 2 | 1986-01-01 00:00:00 |
| 6 | John | 0 | 3 | 1986-01-01 00:00:00 |
| 7 | Cindy | 1 | 3 | 1986-01-01 00:00:00 |
| 8 | Susan | 1 | 3 | 1986-01-01 00:00:00 |
+-----+--------+--------+---------+---------------------+
8 rows in set (0.00 sec)
mysql> delimiter ;
mysql> select * from students;
+-----+--------+--------+---------+---------------------+
| sid | sname | gender | dept_id | brithday |
+-----+--------+--------+---------+---------------------+
| 1 | Andrew | 0 | 1 | 1983-01-01 00:00:00 |
| 2 | Andy | 0 | 1 | 1983-01-01 00:00:00 |
| 3 | Bob | 0 | 1 | 1983-01-01 00:00:00 |
| 4 | Ruth | 1 | 2 | 1983-01-01 00:00:00 |
| 5 | Mike | 0 | 2 | 1986-01-01 00:00:00 |
| 6 | John | 0 | 3 | 1986-01-01 00:00:00 |
| 7 | Cindy | 1 | 3 | 1986-01-01 00:00:00 |
| 8 | Susan | 1 | 3 | 1986-01-01 00:00:00 |
+-----+--------+--------+---------+---------------------+
8 rows in set (0.00 sec)
delimiter //
create procedure simpleproc (in param1 int,out param2 int)
BEGIN
select count(*) into param2 from students where sid>param1;
END;
//
delimiter ;
delimiter //
create procedure simpleproc2 ()
BEGIN
select count(*) from students where sid>1;
END;
//
delimiter ;
delimiter //
create function hello (s char(20))
returns char(50)
return concat('Hello, ',s,'!');
//
delimiter ;
mysql> delimiter //
mysql> create procedure simpleproc (in param1 int,out param2 int)
-> BEGIN
-> select count(*) into param2 from students where sid>param1;
-> END;
-> //
Query OK, 0 rows affected (0.06 sec)
mysql> delimiter ;
mysql> call simpleproc(1,@a);
Query OK, 1 row affected (0.00 sec)
mysql> select @a;
+------+
| @a |
+------+
| 7 |
+------+
1 row in set (0.00 sec)
mysql> select count(*) from students where sid>1;
+----------+
| count(*) |
+----------+
| 7 |
+----------+
1 row in set (0.00 sec)
mysql> call simpleproc(3,@a);
Query OK, 1 row affected (0.00 sec)
mysql> select @a;
+------+
| @a |
+------+
| 5 |
+------+
1 row in set (0.00 sec)
mysql> delimiter //
mysql> create procedure simpleproc2 ()
-> BEGIN
-> select count(*) from students where sid>1;
-> END;
-> //
Query OK, 0 rows affected (0.11 sec)
mysql> delimiter ;
mysql> call simpleproc2 ();
+----------+
| count(*) |
+----------+
| 7 |
+----------+
1 row in set (0.03 sec)
Query OK, 0 rows affected (0.03 sec)
mysql> show create procedure simpleproc;
+------------+-----------+-------------------+----------+---------+-----------+
| Procedure | sql_mode | Create Procedure | character_set_client | collation_connection | Database Collation |
+------------+-----------+-------------------+----------+---------+-----------+
| simpleproc | ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION |
CREATE DEFINER=`root`@`localhost` PROCEDURE `simpleproc`(in param1 int,out param2 int)
BEGIN
select count(*) into param2 from students where sid>param1;
END
| utf8mb4 | utf8mb4_0900_ai_ci | utf8mb4_0900_ai_ci |
+------------+-----------+-------------------+----------+---------+-----------+
1 row in set (0.00 sec)
mysql> delimiter //
mysql> create function hello (s char(20))
-> returns char(50)
-> return concat('Hello, ',s,'!');
-> //
ERROR 1418 (HY000): This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you *might* want to use the less safe log_bin_trust_function_creators variable)
: 該函數聲明中沒有確定性、沒有SQL或讀取SQL數據，並且啟用了二進制日志記錄(您*可能*希望使用不太安全的log_bin_trust_function_creator變量)
mysql> delimiter ;
mysql> show variables like '%bin%';
+--------------------------------------------+-------------------------------------+
| Variable_name | Value |
+--------------------------------------------+-------------------------------------+
| bind_address | * |
| binlog_cache_size | 32768 |
| binlog_checksum | CRC32 |
| binlog_direct_non_transactional_updates | OFF |
| binlog_error_action | ABORT_SERVER |
| binlog_expire_logs_seconds | 2592000 |
| binlog_format | ROW |
| binlog_group_commit_sync_delay | 0 |
| binlog_group_commit_sync_no_delay_count | 0 |
| binlog_gtid_simple_recovery | ON |
| binlog_max_flush_queue_time | 0 |
| binlog_order_commits | ON |
| binlog_row_image | FULL |
| binlog_row_metadata | MINIMAL |
| binlog_row_value_options | |
| binlog_rows_query_log_events | OFF |
| binlog_stmt_cache_size | 32768 |
| binlog_transaction_dependency_history_size | 25000 |
| binlog_transaction_dependency_tracking | COMMIT_ORDER |
| innodb_api_enable_binlog | OFF |
| log_bin | ON |
| log_bin_basename | /data/mysql/mysql/data/binlog |
| log_bin_index | /data/mysql/mysql/data/binlog.index |
| log_bin_trust_function_creators | OFF |
| log_bin_use_v1_row_events | OFF |
| log_statements_unsafe_for_binlog | ON |
| max_binlog_cache_size | 18446744073709547520 |
| max_binlog_size | 1073741824 |
| max_binlog_stmt_cache_size | 18446744073709547520 |
| mysqlx_bind_address | * |
| sql_log_bin | ON |
| sync_binlog | 1 |
+--------------------------------------------+-------------------------------------+
32 rows in set (0.01 sec)
mysql> show variables like '%trust%';
+---------------------------------+-------+
| Variable_name | Value |
+---------------------------------+-------+
| log_bin_trust_function_creators | OFF |
+---------------------------------+-------+
1 row in set (0.01 sec)
mysql> set global log_bin_trust_function_creators=on;
Query OK, 0 rows affected (0.00 sec)
mysql> show variables like '%trust%';
+---------------------------------+-------+
| Variable_name | Value |
+---------------------------------+-------+
| log_bin_trust_function_creators | ON |
+---------------------------------+-------+
1 row in set (0.00 sec)
mysql> delimiter //
mysql> create function hello (s char(20))
-> returns char(50)
-> return concat('Hello, ',s,'!');
-> //
Query OK, 0 rows affected (0.34 sec)
mysql> delimiter ;
mysql> select hello('a');
+------------+
| hello('a') |
+------------+
| Hello, a! |
+------------+
1 row in set (0.01 sec)
mysql> select * from teacher;
+----+-----------+---------+
| id | name | dept_id |
+----+-----------+---------+
| 1 | Zhang san | 1 |
| 2 | Li si | 1 |
| 3 | Wang wu | 2 |
| 4 | Liu liu | 3 |
| 5 | Ding qi | 3 |
+----+-----------+---------+
5 rows in set (0.00 sec)
mysql> select hello(name) from teacher;
+-------------------+
| hello(name) |
+-------------------+
| Hello, Zhang san! |
| Hello, Li si! |
| Hello, Wang wu! |
| Hello, Liu liu! |
| Hello, Ding qi! |
+-------------------+
5 rows in set (0.00 sec)
mysql> start transaction;
Query OK, 0 rows affected (0.00 sec)
mysql> update teacher set name=hello(name);
Query OK, 5 rows affected (0.00 sec)
Rows matched: 5 Changed: 5 Warnings: 0
mysql> select * from teacher;
+----+-------------------+---------+
| id | name | dept_id |
+----+-------------------+---------+
| 1 | Hello, Zhang san! | 1 |
| 2 | Hello, Li si! | 1 |
| 3 | Hello, Wang wu! | 2 |
| 4 | Hello, Liu liu! | 3 |
| 5 | Hello, Ding qi! | 3 |
+----+-------------------+---------+
5 rows in set (0.00 sec)
mysql> rollback;
Query OK, 0 rows affected (0.02 sec)
mysql> select * from teacher;
+----+-----------+---------+
| id | name | dept_id |
+----+-----------+---------+
| 1 | Zhang san | 1 |
| 2 | Li si | 1 |
| 3 | Wang wu | 2 |
| 4 | Liu liu | 3 |
| 5 | Ding qi | 3 |
+----+-----------+---------+
5 rows in set (0.00 sec)
delimiter //
create procedure simpleproc2 ()
select count(*) from students where sid>1;
//
delimiter ;
delimiter //
create procedure simpleproc2 ()
select count(*) from students where sid>1;
select count(*) from students where sid>2;
//
delimiter ;
delimiter //
create procedure simpleproc2 ()
begin
select count(*) from students where sid>1;
select count(*) from students where sid>2;
end;
//
delimiter ;
mysql> drop procedure simpleproc2;
Query OK, 0 rows affected (0.09 sec)
mysql> delimiter //
mysql> create procedure simpleproc2 ()
-> select count(*) from students where sid>1;
-> //
Query OK, 0 rows affected (0.09 sec)
mysql> delimiter ;
mysql>
mysql> call simpleproc2();
+----------+
| count(*) |
+----------+
| 7 |
+----------+
1 row in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
mysql> drop procedure simpleproc2;
Query OK, 0 rows affected (0.03 sec)
mysql> delimiter //
mysql> create procedure simpleproc2 ()
-> select count(*) from students where sid>1;
-> select count(*) from students where sid>2;
-> //
Query OK, 0 rows affected (0.13 sec)
+----------+
| count(*) |
+----------+
| 6 |
+----------+
1 row in set (0.13 sec)
mysql> delimiter ;
mysql>
mysql> call simpleproc2();
+----------+
| count(*) |
+----------+
| 7 |
+----------+
1 row in set (0.00 sec)
Query OK, 0 rows affected (0.00 sec)
mysql> show create procedure simpleproc2;
+-------------+-------------+---------------------+----------------------+----------------------+--------------------+
| Procedure | sql_mode | Create Procedure | character_set_client | collation_connection | Database Collation |
+-------------+-------------+---------------------+----------------------+----------------------+--------------------+
| simpleproc2 | ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION |
CREATE DEFINER=`root`@`localhost` PROCEDURE `simpleproc2`()
select count(*) from students where sid>1;
| utf8mb4 | utf8mb4_0900_ai_ci | utf8mb4_0900_ai_ci |
+-------------+-------------+---------------------+----------------------+----------------------+--------------------+
1 row in set (0.00 sec)
mysql> drop procedure simpleproc2;
Query OK, 0 rows affected (0.13 sec)
mysql> delimiter //
mysql> create procedure simpleproc2 ()
-> begin
-> select count(*) from students where sid>1;
-> select count(*) from students where sid>2;
-> end;
-> //
Query OK, 0 rows affected (0.01 sec)
mysql> delimiter ;
mysql> show create procedure simpleproc2;
+-------------+-----------+------------------+---------------+---------------+--------------------+
| Procedure | sql_mode | Create Procedure | character_set_client | collation_connection | Database Collation |
+-------------+-----------+------------------+---------------+---------------+--------------------+
| simpleproc2 | ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION |
CREATE DEFINER=`root`@`localhost` PROCEDURE `simpleproc2`()
begin
select count(*) from students where sid>1;
select count(*) from students where sid>2;
end
| utf8mb4 | utf8mb4_0900_ai_ci | utf8mb4_0900_ai_ci |
+-------------+-----------+-----------------+----------------+---------------+--------------------+
1 row in set (0.00 sec)
