ms-access – 访问:列出查询依赖项

this answer的帮助下,我创建了一个报告,列出当前数据库中的所有查询,包括它们的输入表/查询及其输出(用于Actions查询).
我一直很满意,直到我注意到结果中缺少一些查询.
我有点卡住原因.
任何线索?

SELECT MSysObjects.Name AS queryName,Mid("SelectMakTblAppendUpdateDeleteXtab  777777PassthUnion ",([msysqueries]![Flag]-1)*6+1,6) AS queryType,src.Name1 AS [Input],MSysQueries.Name1 AS Target,MSysQueries.Attribute
FROM (MSysQueries INNER JOIN MSysObjects ON MSysQueries.ObjectId = MSysObjects.Id) 
LEFT JOIN (SELECT * FROM MSysQueries WHERE Attribute = 5)  AS src ON MSysQueries.ObjectId = src.ObjectId
WHERE (((MSysObjects.Name)>"~z") AND (MSysQueries.Attribute=1))
ORDER BY MSysObjects.Name,src.Name1

编辑:发现对所有逻辑,INNER JOIN MSysObjects ON MSysQueries.ObjectId = MSysObjects.Id有时不返回它应该的每一行.
我检查了MSysQueries和MSysObjects,并确保我在两侧都有相同的对象ID -2147483618,我确保MSysQueries有一个ObjectId的行,其中Attribute = 1,但是,当连接表时,该属性= 1的特定行没有出现.很奇怪.我尝试使用内连接,用条件替换JOIN,在过程中添加Val或CLng,没办法.我迷失在这里.

编辑2:通过使用CStr([Id])= CStr([ObjectId]),找到了一种正确“连接”两个表的方法.
但这真的不是必要的!

解决方法

对于那些感兴趣的人,我现在终于把它弄好了:

SELECT MSysObjects.Name AS QueryName,Nz([expression],[name1]) AS Source,MSysQueries.Name2 AS Alias,MSysObjects.Flags,t.Target
FROM (MSysObjects INNER JOIN MSysQueries ON MSysObjects.Id = MSysQueries.ObjectId) 
LEFT JOIN (SELECT ObjectId,Name1 as Target FROM MSysQueries 
            WHERE (Name1 Not Like "ODBC*") AND (Attribute=1))  AS t 
ON MSysObjects.Id = t.ObjectId
WHERE ((MSysQueries.Attribute=5)) OR ((MSysQueries.Name1 Like "ODBC*"));

对于passthru查询,我选择显示完整的sql语句,当然可以进行调整.我使用它作为一个漂亮的报告的来源,或者我将数据复制到Excel工作表并使用自动过滤器缩小列表范围,直到它澄清目标表的内容来自何处.

在报告中,我使用以下函数显示查询类型:

Function GetQueryType(Flags) as String
        Select Case (Flags And 247)      'Bit And 247: to clear the Hidden flag=8
            Case 0:    GetQueryType = "SELECT "
            Case 16:   GetQueryType = "XTAB "
            Case 32:   GetQueryType = "DELETE "
            Case 48:   GetQueryType = "UPDATE "
            Case 64:   GetQueryType = "APPEND "
            Case 80:   GetQueryType = "MAKE TABLE "
            Case 112:  GetQueryType = "PASS THRU"
            Case 128:  GetQueryType = "UNION"
            Case 3:    GetQueryType = "Report"
            Case Else: GetQueryType = "Other: " & (Flags And 247)
        End Select
End Function

相关文章

迭代器模式(Iterator)迭代器模式(Iterator)[Cursor]意图...
高性能IO模型浅析服务器端编程经常需要构造高性能的IO模型,...
策略模式(Strategy)策略模式(Strategy)[Policy]意图:定...
访问者模式(Visitor)访问者模式(Visitor)意图:表示一个...
命令模式(Command)命令模式(Command)[Action/Transactio...
生成器模式(Builder)生成器模式(Builder)意图:将一个对...