ORACLE 批量插入(Insert)详解

Oracle实现往某表批量插入记录 Oracle如何实现往某表批量插入记录? 阅读详情

Oracle批量插入语句与其他数据库不同,下面列出不同业务需求的插入

假设有一张表Student

-- 学生表
create table Student(
  id   Varchar2(11) primary key,
  name varchar2(32) not null,
  sex  varchar2(3)  not null,
  age  smallint,
  tel  varchar(16)
)

注意:其中[]中代表可选;<>代表必须;table_column的数量必须和column_value一致,并且数据类型要相匹配

1. 单条自定义记录插入

命令格式:

insert into table <tableName>[(<table_column1>,<table_column2>...)] 
values([<column_value1>,<column_value2>...])

示例:insertinto Student(id, name, sex, age, tel) values (‘13’, ‘jack’, ‘男’, 13, ‘13345674567’)

2. 多条自定义记录插入
命令格式1:

insert all
    into <tableName>[(<table_column1>,<table_column2>...)] 
    values([<column_value1>,<column_value2>...]) 
	[into <tableName>[(<table_column1>,<table_column2>...)] 
	values([<column_value1>,<column_value2>...])]...
select  <table_value1>[,<table_value2>...] from dual;

示例:

insert all into Student(id, name, sex, age, tel)
    into Student(id, name, sex, age, tel) values ('12', 'jack1', '男', 12, '13345674567' )
    into Student(id, name, sex, age, tel) values ('13', 'jack2', '男', 13, '13345674567')
    select '14', 'jack', '男', 13, '13345674567' from dual;

注意: 我也不知道为什么要加select from dual语句,反正不加就报错
命令格式2:

 insert into <tableName>[(<table_column1>,<table_column2>...)] 
 select [<column_value1>,<column_value2>...] from dual
   [ union select [<column_value1>,<column_value2>...] from dual ]...

示例:

insert into student(id, name, sex, age, tel)
  select '10' , 'ldh', '男', 19, '14445674567' from  dual
  union select '11' , 'zxy', '男', 20, '13333674567' from dual
  union select '12', 'zxc', '男', 21, '15555674567' from dual

命令格式3:

 insert into <tableName1>[(<table_column1>,<table_column2>...)] 
   select [<column_value1>,<column_value2>...] from <tableName2> [where [...]]
   union [ select [<column_value1>,<column_value2>...] from <tableName2> [where [...] ]]

示例:

insert into student(id, name, sex, age, tel)
  select (id-1)||'' as id, name, sex, age, tel from Student where id='11'
  union select id||'1' as id, name, sex, age, tel from Student where id like '1%'
  union select id||'2' as id, name, sex, age, tel from Student where id like '%1' and id/3 != 0
ORACLE 大批量插入数据 这种也是采用DML并发,适用于执行DML语句慢的应用场景。说明:这种方式只能按照串行的方式进行,如果有多个任务在同时进行,会导致进程等待,反而会影响传输的效率。但是源表的数据量是1亿的数据量,按照最普遍的方式 INSERT INTO 效率太低了。这种是采用INSERT 并发,适用于 查询快,插入慢的场景。注: 这种模式其实跟第三种差不多,只不过这种是会话级别的。这种采用DML并发,适用于执行DML语句慢的应用场景。这种采用查询并发,适用于插入快,查询慢的应用场景。3.插入和查询PARALLEL。 阅读详情

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java oracle批量insert_在Oracle中,通过一个INSERT ALL语句批量插入数据

Oracle:INSERT ALLINTO A(field_1,field_2) VALUES (value_1,value_2)INTO A(field_1,field_2) VALUES (value_3,value_4)INTO A(field_1,field_2) VALUES (value_5,value_6)SELECT 1 FROM DUAL;在Mybatis中使用useGenera...

weixin_39851048的博客 162

2.1_2 Oracle 批量插入(insert all into)

Oralce语法 - 批量插入insert all into

GroupiesM的博客 7963

oracle insert into select 大数据量_Oracle的批量插入操作

MySQL中支持一条SQL语句执行批量插入,Oracle中支持的形式有些不同,但是殊途同归,用的就是insert all into语法。创建测试表,SQL>createtablea1(idnumber,avarchar2(1),bvarchar2(1),cvarchar2(1),dvarchar2(1));Table created.可以用如下语句,执行批量...

weixin_39842955的博客 5436
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