MS Access currentdb.excute 的结果与 Docmd.RunSQL 不同
MS Access currentdb.excute has different result than Docmd.RunSQL
我使用 VBA 到 运行 INSERT INTO ... SELECT... SQL 使用 Currentdb.Execute 命令查询。但是，我对结果有疑问。有一些行缺少数据。
使用 Docmd.RunSQL 和相同的 SQL 结果是正确的，但我不想要将数据插入 table.
的警告消息
我还尝试仅使用 SELECT... 和 Currentdb.Execute 并在调试 window 上打印结果。结果正确，没有遗漏数据。
这是我的代码：
strsql = strsql & "INSERT INTO tempLineItems (OrderNo, PositionNo, PartNo, [Description], PlannedDeliveryDate, Qty, Unit, Price, Curr, txta, LineItemText, Discount, Tax) "
strsql = strsql & "SELECT dbo_ttdsls041600.t_orno, dbo_ttdsls041600.t_pono, dbo_ttdsls041600.t_item, IIF(dbo_ttipcs021600.t_dsca is null,dbo_ttiitm001600.t_dsca,dbo_ttipcs021600.t_dsca) AS t_dsca, dbo_ttdsls041600.t_ddta, dbo_ttdsls041600.t_oqua, dbo_ttdsls041600.t_cups, dbo_ttdsls041600.t_pric, dbo_ttdsls040600.t_ccur, dbo_ttdsls041600.t_txta, Null AS LineItemText, dbo_ttdsls041600.t_disc_1, dbo_ttdsls041600.t_cvat "
strsql = strsql & "FROM dbo_ttdsls040600 INNER JOIN ((dbo_ttipcs021600 RIGHT JOIN dbo_ttdsls041600 ON (dbo_ttipcs021600.t_item = dbo_ttdsls041600.t_item) AND (dbo_ttipcs021600.t_cprj = dbo_ttdsls041600.t_cprj)) LEFT JOIN dbo_ttiitm001600 ON dbo_ttdsls041600.t_item = dbo_ttiitm001600.t_item) ON dbo_ttdsls040600.t_orno = dbo_ttdsls041600.t_orno "
strsql = strsql & "WHERE (((dbo_ttdsls041600.t_orno)=" & Me.txtSalesOrderNo.Value & ") AND ((dbo_ttdsls041600.t_pono)>0)) "
strsql = strsql & "ORDER BY dbo_ttdsls041600.t_pono;"
问题出在
IIF(dbo_ttipcs021600.t_dsca is null,dbo_ttiitm001600.t_dsca,dbo_ttipcs021600.t_dsca) AS t_dsca
我使用了 ISNULL() 函数，它与使用 Is Null 的结果相同
2017 年 3 月 28 日更新：
那些 table 是从 SQL 服务器链接的 table。我根据这些链接的子集数据创建了本地 tables，并且根本没有丢失数据。
很奇怪。但我从来没有用过太多的 SQL Server 表。要使用“运行 SQL”而不收到警告，请将其关闭再打开。
DoCmd.SetWarnings False
DoCmd.RunSQL ...
DoCmd.SetWarnings True
我只是对这个问题很好奇，所以我采用了不同的方法，使用多层查询。
strsql = strsql & "INSERT INTO tempLineItems (OrderNo, PositionNo, PartNo, Description, PlannedDeliveryDate, Qty, Unit, Price, Curr, txta, LineItemText, Discount, Tax) "
strsql = strsql & "SELECT SO1.t_orno, SO1.t_pono, SO1.t_item, nz(SO1.t_dsca, dbo_ttiitm001600.t_dsca) AS t_dsca, SO1.t_ddta, SO1.t_oqua, SO1.t_cups, SO1.t_pric, SO1.t_ccur, SO1.t_txta, Null AS LineItemText, SO1.t_disc_1, SO1.t_cvat "
strsql = strsql & "FROM (SELECT SO.t_orno, SO.t_ccur, SO.t_pono, SO.t_item, SO.t_oqua, SO.t_pric, SO.t_cups, SO.t_ddta, SO.t_txta, SO.t_disc_1, SO.t_cvat, dbo_ttipcs021600.t_dsca "
strsql = strsql & "FROM (SELECT dbo_ttdsls040600.t_orno, dbo_ttdsls040600.t_ccur, dbo_ttdsls041600.t_pono, dbo_ttdsls041600.t_item, dbo_ttdsls041600.t_pric, dbo_ttdsls041600.t_cups, dbo_ttdsls041600.t_ddta, dbo_ttdsls041600.t_cprj, dbo_ttdsls041600.t_txta, dbo_ttdsls041600.t_disc_1, dbo_ttdsls041600.t_cvat, dbo_ttdsls041600.t_oqua "
strsql = strsql & "FROM dbo_ttdsls041600 INNER JOIN dbo_ttdsls040600 ON dbo_ttdsls041600.t_orno = dbo_ttdsls040600.t_orno "
strsql = strsql & "WHERE (((dbo_ttdsls040600.t_orno)=" & Me.txtSalesOrderNo & "))) SO "
strsql = strsql & "LEFT JOIN dbo_ttipcs021600 ON dbo_ttipcs021600.t_cprj = SO.t_cprj AND dbo_ttipcs021600.t_item = SO.t_item) AS SO1 LEFT JOIN dbo_ttiitm001600 ON dbo_ttiitm001600.t_item = SO1.t_item "
strsql = strsql & "ORDER BY SO1.t_pono;"
这有效！！我想 Access 内部存在一些问题。
我使用 VBA 到 运行 INSERT INTO ... SELECT... SQL 使用 Currentdb.Execute 命令查询。但是，我对结果有疑问。有一些行缺少数据。
使用 Docmd.RunSQL 和相同的 SQL 结果是正确的，但我不想要将数据插入 table.
的警告消息我还尝试仅使用 SELECT... 和 Currentdb.Execute 并在调试 window 上打印结果。结果正确，没有遗漏数据。
这是我的代码：
strsql = strsql & "INSERT INTO tempLineItems (OrderNo, PositionNo, PartNo, [Description], PlannedDeliveryDate, Qty, Unit, Price, Curr, txta, LineItemText, Discount, Tax) "
strsql = strsql & "SELECT dbo_ttdsls041600.t_orno, dbo_ttdsls041600.t_pono, dbo_ttdsls041600.t_item, IIF(dbo_ttipcs021600.t_dsca is null,dbo_ttiitm001600.t_dsca,dbo_ttipcs021600.t_dsca) AS t_dsca, dbo_ttdsls041600.t_ddta, dbo_ttdsls041600.t_oqua, dbo_ttdsls041600.t_cups, dbo_ttdsls041600.t_pric, dbo_ttdsls040600.t_ccur, dbo_ttdsls041600.t_txta, Null AS LineItemText, dbo_ttdsls041600.t_disc_1, dbo_ttdsls041600.t_cvat "
strsql = strsql & "FROM dbo_ttdsls040600 INNER JOIN ((dbo_ttipcs021600 RIGHT JOIN dbo_ttdsls041600 ON (dbo_ttipcs021600.t_item = dbo_ttdsls041600.t_item) AND (dbo_ttipcs021600.t_cprj = dbo_ttdsls041600.t_cprj)) LEFT JOIN dbo_ttiitm001600 ON dbo_ttdsls041600.t_item = dbo_ttiitm001600.t_item) ON dbo_ttdsls040600.t_orno = dbo_ttdsls041600.t_orno "
strsql = strsql & "WHERE (((dbo_ttdsls041600.t_orno)=" & Me.txtSalesOrderNo.Value & ") AND ((dbo_ttdsls041600.t_pono)>0)) "
strsql = strsql & "ORDER BY dbo_ttdsls041600.t_pono;"
问题出在
IIF(dbo_ttipcs021600.t_dsca is null,dbo_ttiitm001600.t_dsca,dbo_ttipcs021600.t_dsca) AS t_dsca
我使用了 ISNULL() 函数，它与使用 Is Null 的结果相同
2017 年 3 月 28 日更新： 那些 table 是从 SQL 服务器链接的 table。我根据这些链接的子集数据创建了本地 tables，并且根本没有丢失数据。
很奇怪。但我从来没有用过太多的 SQL Server 表。要使用“运行 SQL”而不收到警告，请将其关闭再打开。
DoCmd.SetWarnings False
DoCmd.RunSQL ...
DoCmd.SetWarnings True
我只是对这个问题很好奇，所以我采用了不同的方法，使用多层查询。
strsql = strsql & "INSERT INTO tempLineItems (OrderNo, PositionNo, PartNo, Description, PlannedDeliveryDate, Qty, Unit, Price, Curr, txta, LineItemText, Discount, Tax) "
strsql = strsql & "SELECT SO1.t_orno, SO1.t_pono, SO1.t_item, nz(SO1.t_dsca, dbo_ttiitm001600.t_dsca) AS t_dsca, SO1.t_ddta, SO1.t_oqua, SO1.t_cups, SO1.t_pric, SO1.t_ccur, SO1.t_txta, Null AS LineItemText, SO1.t_disc_1, SO1.t_cvat "
strsql = strsql & "FROM (SELECT SO.t_orno, SO.t_ccur, SO.t_pono, SO.t_item, SO.t_oqua, SO.t_pric, SO.t_cups, SO.t_ddta, SO.t_txta, SO.t_disc_1, SO.t_cvat, dbo_ttipcs021600.t_dsca "
strsql = strsql & "FROM (SELECT dbo_ttdsls040600.t_orno, dbo_ttdsls040600.t_ccur, dbo_ttdsls041600.t_pono, dbo_ttdsls041600.t_item, dbo_ttdsls041600.t_pric, dbo_ttdsls041600.t_cups, dbo_ttdsls041600.t_ddta, dbo_ttdsls041600.t_cprj, dbo_ttdsls041600.t_txta, dbo_ttdsls041600.t_disc_1, dbo_ttdsls041600.t_cvat, dbo_ttdsls041600.t_oqua "
strsql = strsql & "FROM dbo_ttdsls041600 INNER JOIN dbo_ttdsls040600 ON dbo_ttdsls041600.t_orno = dbo_ttdsls040600.t_orno "
strsql = strsql & "WHERE (((dbo_ttdsls040600.t_orno)=" & Me.txtSalesOrderNo & "))) SO "
strsql = strsql & "LEFT JOIN dbo_ttipcs021600 ON dbo_ttipcs021600.t_cprj = SO.t_cprj AND dbo_ttipcs021600.t_item = SO.t_item) AS SO1 LEFT JOIN dbo_ttiitm001600 ON dbo_ttiitm001600.t_item = SO1.t_item "
strsql = strsql & "ORDER BY SO1.t_pono;"
这有效！！我想 Access 内部存在一些问题。