如何利用存储过程和触发器来管理数据库一(1)

SELECT[ALL|DISTINCT]select_list
[INTO[new_table_name]]
[FROM{table_name|view_name}
[WHERE clause]
[GROUP BY clause]
[HAVING clause]
[ORDER BY clause]
[COMPUTE clause]

select_list指定列
(ALL则为所有列，DISTINCT为不选相同记录
new_table_name指定目标表名
table_name|view_name指定源表名或源视图名
WHERE clause给出选择条件
GROUP BY clause按clause分组处理
HAVING clause给出分组处理的条件
ORDER BY clause按clause排序
COMPUTE clause则产生新行

INSERT[INTO]
{table_name|view_name}[(cohurnn_list)]
{DEFAULT VALUES|values_list|select_statement}

table_name|view_name指定新表名或新视图名
values_list|select_statement指定列或子查询

UPDATE{table_name|view_name}
SET[{table_name|view_name}
{column_list|variable_list|
variable_and_column_list}
[WHERE clause]

table_name|view_name指定源表名或源视图名
column_list|variable_list指出列或变量名
WHERE clause给修改条件