oracle中,如何将两个字段数据合并成一个字段显示,接下来看一下在sql server和pl/sql的区别

sql server中如何合并(用Cast()函数)

--1、创建模拟的数据表---
create table GoodsCate(
Mid int not null,
Code varchar(10) not null,
Name varchar(20) not null,
)
--2、添加模拟数据--
insert into GoodsCate(Mid,Code,Name) values(1,'','电子仪器')
insert into GoodsCate(Mid,Code,Name) values(2,'','激光仪器')
insert into GoodsCate(Mid,Code,Name) values(3,'','扫描仪器')
--3、未合并的结果--
select * from GoodsCate
--4、sqlserver中的合并--
select (CAST(Code as varchar(20))+'_'+CAST(Name as varchar(20))) 合并结果集 from GoodsCate

最后结果显示

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" 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那么,在oracle中如何合并数据(用Concat()函数)

--1、创建模拟的数据表 ---
create table GoodsCate(
MID INTEGER not null,
CODE NVARCHAR2(100) not null,
NAME NVARCHAR2(100) not null
)
--2 、添加模拟数据 --
insert into GoodsCate(Mid,Code,Name) values(1,'','电子仪器')
insert into GoodsCate(Mid,Code,Name) values(2,'','激光仪器')
insert into GoodsCate(Mid,Code,Name) values(3,'','扫描仪器')
--3 、未合并的结果 --
select * from GoodsCate
--4 、oracle 中的合并--
select (Concat(Concat(CODE,'_'),NAME)) 合并结果集 from GoodsCate

结果显示

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alt="" />

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