子查询返回了 1 个以上的值。子查询时不允许这样做

Question

我正在尝试 return Windows 使用 SQL 从 SCCM 更新合规性数据，我已经从内置的 SSRS 报告中提取了查询。

我试图通过将@colname 声明为 table 并插入多个值来组合成一个查询，而不是运行每个 @colname（计算机组）的单独查询。

在 SQL 中 return 的错误是：

Msg 512, Level 16, State 1, Line 6
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.

我的代码：

DECLARE @title VARCHAR(500);
DECLARE @colname TABLE (name VARCHAR(100));

SET @title = 'ADR | Workstation Software Updates 2017-12-14 09:01:38';

INSERT INTO @colname   
VALUES ('All Alpha Workstations'), ('All Beta Workstations'), ('All Delta Workstations');

SELECT DISTINCT
    COUNT(*) [Total Clients], li.title, coll.name,
    SUM(CASE WHEN ucs.status = 3 OR ucs.status = 1 THEN 1 ELSE 0 END) AS 'Installed / Not Applicable',
    SUM(CASE WHEN ucs.status = 2 THEN 1 ELSE 0 END) AS 'Required',
    SUM(CASE WHEN ucs.status = 0 THEN 1 ELSE 0 END) as 'Unknown',
    ROUND((CAST(SUM(CASE WHEN ucs.status = 3 OR ucs.status = 1 THEN 1 ELSE 0 END) AS float) / COUNT(*)) * 100, 2) AS 'Success %',
    ROUND((CAST(COUNT(CASE WHEN ucs.status NOT IN ('3', '1') THEN '*' END) AS FLOAT) / COUNT(*)) * 100, 2) AS 'Not Success%'
FROM
    v_Update_ComplianceStatusAll UCS
INNER JOIN
    v_r_system sys ON ucs.resourceid = sys.resourceid
INNER JOIN 
    v_FullCollectionMembership fcm ON ucs.resourceid = fcm.resourceid
INNER JOIN
    v_collection coll ON coll.collectionid = fcm.collectionid
INNER JOIN
    v_AuthListInfo LI ON ucs.ci_id = li.ci_id
WHERE 
    li.title = @title 
    AND coll.name = (SELECT name FROM @colname) --and ucs.status=2
GROUP BY
    li.title, coll.name
ORDER BY
    1

感谢任何帮助。谢谢

Answer 1

子查询select name from @collnamereturns多了一个值，这就是为什么不能使用=.

使用IN谓词代替=:

where li.title=@title and coll.name in (select name from @collname)

Answer 2

为什么要为此使用 Table 变量？没有必要（Table 变量总是期望 return 1 行，除非你使用 2017，它是 100）。可以对您的查询性能产生重大影响。

就这样：

and coll.name IN ('All Alpha Workstations','All Beta Workstations','All Delta Workstations')

子查询返回了 1 个以上的值。子查询时不允许这样做

Subquery returned more than 1 value. This is not permitted when the subquery

sql-server

sccm

reporting-services