Question

带对象的表：

create table objects(
    ID int identity primary key,
    name varchar(50) unique
)

让我们说我们在表格中记录a,b,c。插入使用字符串示例'd,e,f,c,b,d'给出的新行，使用将CSV字符串更改为表并返回它的函数。

我需要插入一些不在对象表中的字符串示例，它将是d,e,f。我该怎么做？我在考虑

insert into objects(names)
select distinct names from split('d,e,f,c,b,d')
EXCEPT
select names from objects

但我相信它有更好的溶解。

Answer 1

我使用merge objects using (select distinct name from split(@string,',')) as s on objects.name=s.name when not matched then insert(name) values (split.name);并且它有效

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SQL Server插入非重复项

1 个答案: