T-Sql（五）xml操作

create table Student
(id int primary key,content xml)

insert into dbo.Student
values(1000,'<Students>
    <Student  id="1001">
        <name>aaa</name>
        <age>20</age>
        <birthday>1991-2-20</birthday>
    </Student>
    <Student  id="1002">
        <name>bbb</name>
        <age>21</age>
        <birthday>1990-2-20</birthday>
    </Student>    
</Students>')

update dbo.Student      
set content.modify('
insert <Student  id="1003">
    <name>aaa</name>
    <age>20</age>
    <birthday>1991-2-20</birthday>
    </Student>
as last
into (/Students)[1]
')

update dbo.Student       
set content.modify('
insert attribute sex {"男"}
into (/Students/Student[@id="1003"])[1]
')

update dbo.Student      
set content.modify('
insert <add>江苏丰县</add>
as last
into (/Students/Student[@id="1003"])[1]
')

update dbo.Student       
set content.modify('
delete /Students/Student[@id="1003"]
')

update dbo.Student      
set content.modify('
replace value of (/Students/Student[@id="1003"]/add/text())[1]
with "江苏徐州"
')

update dbo.Student      
set content.modify('
replace value of (/Students/Student[@id="1003"]/@id)[1]
with 1004
')

select Student1.content.value('./@id','int') as ID,   
Student1.content.value('(/Students/Student/name)[1]','nvarchar(30)') as StuName    
from dbo.Student
CROSS APPLY content.nodes('/Students/Student') as Student1(content)

create table Table1
(
    ID int primary key,
    Name nvarchar(50) not null
)

insert into dbo.Table1 values(1,'Name1'),(2,'Name2'),(3,'Name3')
select * from Table1

create proc proc_Table1
(
    @ID xml
)
as
begin
    declare @Temp table(ID1 int)
    insert into @Temp(ID1) select ParamValues123.ID2.value('./@id','int') as asdfasdf FROM @ID.nodes('/nodes/node') as ParamValues123(ID2)
    
    begin transaction t1
        declare @j int;
        select @j=count(ID1) from @Temp;    
        declare curs_Table1 cursor for select ID1 from @Temp;
        declare @ID2 int;
        declare @i int;
        set @i=0;
        open curs_Table1;
        fetch next from curs_Table1 into @ID2;
            while @@FETCH_STATUS = 0
                begin
                    if(exists(select ID from dbo.Table1 where ID=@ID2))
                        set @i=@i+1;
                    fetch next from curs_Table1 into @ID2;
                end
        close curs_Table1;
        deallocate curs_Table1;
        
        if @i=@j
        begin
                delete from dbo.Table1 Where ID in
                (
                    SELECT ParamValues123.ID2.value('./@id','int') as ID
                    FROM @ID.nodes('/nodes/node') as ParamValues123(ID2)
                )
                commit transaction t1;
            end
        else
            rollback transaction t1;
        --drop table @Temp;
        
        --select * from Table1 Where ID in
        --(
            --SELECT ParamValues123.ID2.value('./@id','int') as asdfasdf
            --FROM @ID.nodes('/nodes/node') as ParamValues123(ID2)
        --)
end