在SQL SERVER中合并两个XML CTE 在SQL Server中,CTE(公共表表达式)是一种临时命名结果集,可以在一个查询中多次引用。XML(可扩展标记语言)是一种用于存储和传输数据的标记语言。 要在SQL Server中合并两个XML CTE,可以使用以下步骤: 创建两个XML CTE:首先,使用WITH关键字创建两个CTE,分别表示要合并的两个XML数据...
使用CTE(Common Table Expression)合并两个查询是一种在SQL语言中进行数据操作的技术。CTE允许我们创建一个临时的命名查询结果集,然后将其作为表来使用。 CTE的合并操作可以通过以下步骤实现: 定义第一个查询的CTE:使用WITH关键字定义一个CTE,给它一个名称,并在括号内写下查询语句。例如: 代码语言:txt 复制 WITH ...
--3、将表变量a输出到一个临时结果集,并用来和原始表#t join后更改原始表 --这里用到了带有from子句的update语句和cte类型 update #t set #t.v = d.v from #t inner join ( SELECT b.id k,c.id v FROM @a a CROSS APPLY ( SELECT id = t.x.value('@k','varchar(100)') FROM a.data.n...
如果要求不同,那么您需要更改 CTE。 我不知道 dbo.GetCurrentLanguageValue 的作用,但它可能会被分解为内联表值函数,这通常更快。 DECLARE @ItemsXml XML; WITH cte AS ( SELECT ti.[Order], ti.ParentId, ti.Id as Id, ti.EmptyItemTypeId, ti.TreeItemTypeId, NULL AS ParentTreeItemTypeId, CAST(ti...
</MatchKeys> ') SELECT x.ref.value('@key1[1]', 'int') AS MatchKey_Group, x.ref.value('@key2[1]', 'int') AS MatchKey_ID, x.ref.value('@key3[1]', 'varchar(50)') AS KeyColumn FROM @xmlData.nodes('/MatchKeys/fuzzyKeys/key') AS x( ref ) ...
FROM cte; The only thing I see wrong here is that the string wasn't converted into an XML fragment. This makes me wonder what Microsoft is doing under the hood in the conversion, but not enough to actually go investigating it. 😉 I don't particularly care much for XML anyway, but ...
An earlier CTE-based version of this answer also worked in SQL Developer but SQL Fiddle got an ORA-600 error; that along with the issue you had in the question suggests maybe SQL Fiddle is on an unpatched, or at least differently patched, version of 11gR2 which has bugs in the XML han...
/*-- 注意,CTE 表达式前面必须要用分号“;”把其代码分开,建议在WITH前面加分号“;” --*/ ;WITHcteAS( SELECT ProductCategoryID FROMdbo.xxxx_xxxx parent(NOLOCK)WHEREProductCategoryID=@productCategoryId UNIONALL SELECT child.ProductCategoryID
--2、准备批量更新的XML DECLARE@aTABLE(data XML) INSERT@aSELECT' <root> </root>' --3、将表变量a输出到一个临时结果集,并用来和原始表#t join后更改原始表 --这里用到了带有from子句的update语句和cte类型 update#tset#t.v=d.v from#tinnerjoin( SELECTb.id k,...
可以用CTE ;with temp as (select 编号,姓名,row=row_number()over(partition by 编号 order by 编号) from A),temp2 as (select 编号,cast(姓名 as nvarchar(100))姓名,row from temp where row=1 union all select a.编号,cast(b.姓名+','+a.姓名 as nvarchar(100)),a.row from ...