创建带序列的表列
2021年1月16日
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要求数据库版本12c及以上
语法
GENERATED (ALWAYS | (BY DEFAULT [ON NULL])) AS IDENTITY
[sequence_options,...]
语法解析
语法
语法说明
GENERATED ALWAY[......]
要求数据库版本12c及以上
GENERATED (ALWAYS | (BY DEFAULT [ON NULL])) AS IDENTITY
[sequence_options,...]
语法
语法说明
GENERATED ALWAY[......]
官方对SAVEPOINT的说明:
Use the SAVEPOINT statement to identify a point in a transaction to which you can later roll back.
简单的理解就是可以部分提交事务
官网的一个例子:
UPDATE e[......]
Aggregate functions return a single result row based on groups of rows
Aggregate functions return a single result row[......]
create table ANGU_TEST1
(
id NUMBER
)
tablespace USERS
pctfree 10
initrans 1
maxtrans 255
storage[......]
create table Fruit
(id int,name varchar(20),
Q1 int, Q2 int,
Q3 int, Q4 int);
insert into Fruit values(1,'苹果',1000,2000,3300,5000);
insert i[......]