如果您可以在 XML 的正文中使用标记,则可以使用 replace() 将标记替换为数量值。
declare @table table (bookid int,xmlCol NVARCHAR(MAX))
insert into @table
select 1,
'<book title="you are not alone" author="Esther" {quantity}>
<EDITIONS>
<edition year="2012"/>
<edition year="2013"/>
</EDITIONS>
</book>'
declare @table1 table(bookid int,quantity int)
insert into @table1
select 1,3
select
CAST(REPLACE(t.xmlCol, '{quantity}', 'quantity="' + CAST(t1.quantity AS NVARCHAR(50)) + '"') AS XML) AS xmlCol
from @table t
inner join @table1 t1
on t.bookid = t1.bookid
否则,您可以像这样使用 xml.modify 函数:
declare @table table (bookid int,xmlCol xml)
insert into @table
select 1,
'<book title="you are not alone" author="Esther">
<EDITIONS>
<edition year="2012"/>
<edition year="2013"/>
</EDITIONS>
</book>'
declare @table1 table(bookid int,quantity int)
insert into @table1
select 1,3
DECLARE
@myDoc XML
,@Qty INT
SET @myDoc = (SELECT xmlCol FROM @table WHERE bookid = 1)
SET @Qty = (SELECT quantity FROM @table1 WHERE bookid = 1)
SET @myDoc.modify('
insert attribute quantity {sql:variable("@Qty") }
into (/book) [1] ')
SELECT @myDoc
看起来您不能在 select 语句中使用 xml.modify,因此您可能需要使用循环来循环 table 和 table1 中的值并将结果写入另一个表以进行最终输出。