trigger 或 trigger 依赖的对象中(如 package)显示调用 base_table%rowtype。 问题的风险及影响 OBServer core。 影响租户 影响OceanBase 数据库中的 Oracle 租户,对于 SYS 租户和 MySQL 租户无影响。 影响的版本 OceanBase 数据库 V2.2.77 GA(oceanbase-2.2.77-2021
Here is a simple example that associates a trigger with a table, to activate forINSERToperations. The trigger acts as an accumulator, summing the values inserted into one of the columns of the table. mysql>CREATETABLEaccount(acct_numINT,amountDECIMAL(10,2));Query OK, 0 rows affected (0.03 ...
A trigger is defined to activate when a statement inserts, updates, or deletes rows in the associated table. These row operations are trigger events. For example, rows can be inserted byINSERTorLOAD DATAstatements, and an insert trigger activates for each inserted row. A trigger can be set ...
In this case, if an update join operation is performed on the table with a trigger, subsequent join operations will continue to generate warnings even if the subsequent operations are normal. Due to the insertion of null, set_field_to_null_with_conversions() is called in Item::save_in_...
错误Can’t update table ‘’ in stored function/trigger because it is already used by statement 产生原因 - 原因一: 触发器中使用了insert语句 示例表结构 定义一个插入触发器,new代表插入进来的值,new.sex则说明插进来的sex 插入触发器定义成功 执行插入语句... ...
mysql> create table t1(f1 int(2),f2 int(2)); Query OK, 0 rows affected (0.50 sec) mysql> create table t2(f1 int(2),f2 int(2)); Query OK, 0 rows affected (0.16 sec) mysql> delimiter $ mysql> create trigger tr1 after insert on t1 ...
在MySQL中,建立数据库用() A. CREATETABLE命令 B. CREATETRIGGER命令 C. CREATEINDEX命令 D. CREATEDATABA
CREATE TRIGGER AfterTriggerName ON TableName AFTER DELETE AS BEGIN /* Series SQL code statements */ END; This guide shows how to work with triggers in SQL Server. There are some syntax differences for MySQL (and other database systems) when creating triggers, but the concepts are similar....
A trigger is an ideal way of maintaining the values in this summary table. Example 11-2 shows example triggers that maintain the values in the customer_sales_totals table whenever there is an UPDATE, INSERT, or DELETE operation on the sales table. ......
This works great but I would like to add the update & delete of records in the same trigger how do I accomplish this? I am using MySQL 5.0.26 When I added the update and delete it says my version of MySQL doesn't allow it. When I create another trigger it gives me an error say...