使用 Access 2010 中的另一个查询删除查询
Delete Query using another query in Access 2010
我在删除记录时遇到问题。我使用名为 Asset_ID 的字段链接了两个表，这是我的主键。我创建了一个查询来提取所有不匹配的记录，因此我想删除那些不匹配的记录。当我 运行 查询时它给我一个错误说 "Could not delete from specified tables"，我做了一些研究，他们建议转到我的删除查询 属性 并将选项 "Unique Records" 更改为是.没用。请帮我解决这个问题。
我正在使用 Access 2010 查询生成器来执行此操作，但这里是 Sql 代码：
DELETE DISTINCTROW [HANDHELD TABLE1 Without Matching HANDHELD TABLE].ASSET_ID
FROM [HANDHELD TABLE1 Without Matching HANDHELD TABLE]
WHERE ((([HANDHELD TABLE1 Without Matching HANDHELD TABLE].ASSET_ID) Is Not Null));
这是我的掌机 TABLE1 没有匹配的掌机 TABLE Sql.
SELECT [HANDHELD TABLE1].ASSET_ID, [HANDHELD TABLE1].INSPECTION_NUMBER, [HANDHELD TABLE1].INSPECTION_FLUSH, [HANDHELD TABLE1].LAST_PRESSURE, [HANDHELD TABLE1].LAST_INSPECT_DATE, [HANDHELD TABLE1].ADDRESS, [HANDHELD TABLE1].LOCATION_DESCRIPTION1, [HANDHELD TABLE1].COMMENTS, [HANDHELD TABLE1].MUNICIPALITY, [HANDHELD TABLE1].PRESSURE_ZONE, [HANDHELD TABLE1].FACILITY_CATEGORY, [HANDHELD TABLE1].LIFECYCLESTATUS, [HANDHELD TABLE1].MANUFACTURER, [HANDHELD TABLE1].INSP_BY, [HANDHELD TABLE1].PAINT, [HANDHELD TABLE1].[GROUND CLEARANCE], [HANDHELD TABLE1].[CURB CLEARANCE], [HANDHELD TABLE1].OBSTRUCTIONS, [HANDHELD TABLE1].[STUFFING BOX LEAK], [HANDHELD TABLE1].[CAULKING LEAK], [HANDHELD TABLE1].CAPS, [HANDHELD TABLE1].DRIP, [HANDHELD TABLE1].[DRIP COMMENTS], [HANDHELD TABLE1].FLUSHED, [HANDHELD TABLE1].[OIL STUFFING BOX], [HANDHELD TABLE1].[OIL CAPS], [HANDHELD TABLE1].DRAINAGE, [HANDHELD TABLE1].[DRAINAGE COMMENTS], [HANDHELD TABLE1].LUBRICATION, [HANDHELD TABLE1].[OPERATING NUT], [HANDHELD TABLE1].[OPERATING NUT COMMENTS], [HANDHELD TABLE1].NOZZLE, [HANDHELD TABLE1].[NOZZLE COMMENTS], [HANDHELD TABLE1].[MAIN WASHER], [HANDHELD TABLE1].[INSPECTION YEAR], [HANDHELD TABLE1].[TIME INSPECTED], [HANDHELD TABLE1].NOISE, [HANDHELD TABLE1].TIMEOPENED, [HANDHELD TABLE1].TIMECLOSED, [HANDHELD TABLE1].TIMETOCLEAR, [HANDHELD TABLE1].OPENEDCOLOR, [HANDHELD TABLE1].CLOSEDCOLOR, [HANDHELD TABLE1].FLUSHREMARKS, [HANDHELD TABLE1].DATEFLUSHED, [HANDHELD TABLE1].LASTFLUSHDATE, [HANDHELD TABLE1].FLUSHEDBY, [HANDHELD TABLE1].TIMEFLUSHED
FROM [HANDHELD TABLE1] LEFT JOIN [HANDHELD TABLE] ON [HANDHELD TABLE1].ASSET_ID = [HANDHELD TABLE].ASSET_ID
WHERE ((([HANDHELD TABLE].INSPECTION_FLUSH) Is Null) AND (([HANDHELD TABLE].ASSET_ID) Is Null));
从您提供的查询看来，您正在将 table 链接到自身以查找检查刷新为空的字段。
然后您的问题是将您的关键字段 "ASSSET_ID" 加入自身并寻找空值。这种情况永远不会发生，因为它是关键字段。
试试这样的东西：
DELETE DISTINCTROW [HANDHELD TABLE_1].INSPECTION_FLUSH, [HANDHELD TABLE].*
FROM [HANDHELD TABLE] LEFT JOIN [HANDHELD TABLE] AS [HANDHELD TABLE_1] ON [HANDHELD TABLE].INSPECTION_FLUSH = [HANDHELD TABLE_1].INSPECTION_FLUSH
WHERE ((([HANDHELD TABLE_1].INSPECTION_FLUSH) Is Null));
我在删除记录时遇到问题。我使用名为 Asset_ID 的字段链接了两个表，这是我的主键。我创建了一个查询来提取所有不匹配的记录，因此我想删除那些不匹配的记录。当我 运行 查询时它给我一个错误说 "Could not delete from specified tables"，我做了一些研究，他们建议转到我的删除查询 属性 并将选项 "Unique Records" 更改为是.没用。请帮我解决这个问题。
我正在使用 Access 2010 查询生成器来执行此操作，但这里是 Sql 代码：
DELETE DISTINCTROW [HANDHELD TABLE1 Without Matching HANDHELD TABLE].ASSET_ID
FROM [HANDHELD TABLE1 Without Matching HANDHELD TABLE]
WHERE ((([HANDHELD TABLE1 Without Matching HANDHELD TABLE].ASSET_ID) Is Not Null));
这是我的掌机 TABLE1 没有匹配的掌机 TABLE Sql.
SELECT [HANDHELD TABLE1].ASSET_ID, [HANDHELD TABLE1].INSPECTION_NUMBER, [HANDHELD TABLE1].INSPECTION_FLUSH, [HANDHELD TABLE1].LAST_PRESSURE, [HANDHELD TABLE1].LAST_INSPECT_DATE, [HANDHELD TABLE1].ADDRESS, [HANDHELD TABLE1].LOCATION_DESCRIPTION1, [HANDHELD TABLE1].COMMENTS, [HANDHELD TABLE1].MUNICIPALITY, [HANDHELD TABLE1].PRESSURE_ZONE, [HANDHELD TABLE1].FACILITY_CATEGORY, [HANDHELD TABLE1].LIFECYCLESTATUS, [HANDHELD TABLE1].MANUFACTURER, [HANDHELD TABLE1].INSP_BY, [HANDHELD TABLE1].PAINT, [HANDHELD TABLE1].[GROUND CLEARANCE], [HANDHELD TABLE1].[CURB CLEARANCE], [HANDHELD TABLE1].OBSTRUCTIONS, [HANDHELD TABLE1].[STUFFING BOX LEAK], [HANDHELD TABLE1].[CAULKING LEAK], [HANDHELD TABLE1].CAPS, [HANDHELD TABLE1].DRIP, [HANDHELD TABLE1].[DRIP COMMENTS], [HANDHELD TABLE1].FLUSHED, [HANDHELD TABLE1].[OIL STUFFING BOX], [HANDHELD TABLE1].[OIL CAPS], [HANDHELD TABLE1].DRAINAGE, [HANDHELD TABLE1].[DRAINAGE COMMENTS], [HANDHELD TABLE1].LUBRICATION, [HANDHELD TABLE1].[OPERATING NUT], [HANDHELD TABLE1].[OPERATING NUT COMMENTS], [HANDHELD TABLE1].NOZZLE, [HANDHELD TABLE1].[NOZZLE COMMENTS], [HANDHELD TABLE1].[MAIN WASHER], [HANDHELD TABLE1].[INSPECTION YEAR], [HANDHELD TABLE1].[TIME INSPECTED], [HANDHELD TABLE1].NOISE, [HANDHELD TABLE1].TIMEOPENED, [HANDHELD TABLE1].TIMECLOSED, [HANDHELD TABLE1].TIMETOCLEAR, [HANDHELD TABLE1].OPENEDCOLOR, [HANDHELD TABLE1].CLOSEDCOLOR, [HANDHELD TABLE1].FLUSHREMARKS, [HANDHELD TABLE1].DATEFLUSHED, [HANDHELD TABLE1].LASTFLUSHDATE, [HANDHELD TABLE1].FLUSHEDBY, [HANDHELD TABLE1].TIMEFLUSHED
FROM [HANDHELD TABLE1] LEFT JOIN [HANDHELD TABLE] ON [HANDHELD TABLE1].ASSET_ID = [HANDHELD TABLE].ASSET_ID
WHERE ((([HANDHELD TABLE].INSPECTION_FLUSH) Is Null) AND (([HANDHELD TABLE].ASSET_ID) Is Null));
从您提供的查询看来，您正在将 table 链接到自身以查找检查刷新为空的字段。
然后您的问题是将您的关键字段 "ASSSET_ID" 加入自身并寻找空值。这种情况永远不会发生，因为它是关键字段。
试试这样的东西：
DELETE DISTINCTROW [HANDHELD TABLE_1].INSPECTION_FLUSH, [HANDHELD TABLE].*
FROM [HANDHELD TABLE] LEFT JOIN [HANDHELD TABLE] AS [HANDHELD TABLE_1] ON [HANDHELD TABLE].INSPECTION_FLUSH = [HANDHELD TABLE_1].INSPECTION_FLUSH
WHERE ((([HANDHELD TABLE_1].INSPECTION_FLUSH) Is Null));