Server Error in '/' Application.
An expression of non-boolean type specified in a context where a condition is expected, near 'AdmissionID'.
Description:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details:
System.Data.SqlClient.SqlException: An expression of non-boolean type specified in a context where a condition is expected, near 'AdmissionID'.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[SqlException (0x80131904): An expression of non-boolean type specified in a context where a condition is expected, near 'AdmissionID'.]
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +1767866
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +5352418
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +244
System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) +1691
System.Data.SqlClient.SqlDataReader.TryConsumeMetaData() +61
System.Data.SqlClient.SqlDataReader.get_MetaData() +90
System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +365
System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds) +1406
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite) +177
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +53
System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +134
System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior) +41
System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) +10
System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +140
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +316
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) +86
System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +1481
System.Web.UI.WebControls.ListControl.OnDataBinding(EventArgs e) +101
System.Web.UI.WebControls.ListControl.PerformSelect() +34
System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +30
System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +105
System.Web.UI.WebControls.BaseDataBoundControl.set_RequiresDataBinding(Boolean value) +9844021
System.Web.UI.WebControls.DataBoundControl.OnDataSourceViewChanged(Object sender, EventArgs e) +15
System.Web.UI.DataSourceView.OnDataSourceViewChanged(EventArgs e) +105
System.Web.UI.WebControls.SqlDataSourceView.SelectParametersChangedEventHandler(Object o, EventArgs e) +31
System.Web.UI.WebControls.ParameterCollection.OnParametersChanged(EventArgs e) +20
System.Web.UI.WebControls.Parameter.UpdateValue(HttpContext context, Control control) +142
System.Web.UI.WebControls.ParameterCollection.UpdateValues(HttpContext context, Control control) +101
System.Web.UI.WebControls.ParameterCollection.GetValues(HttpContext context, Control control) +36
System.Web.UI.WebControls.SqlDataSourceView.InitializeParameters(DbCommand command, ParameterCollection parameters, IDictionary exclusionList) +257
System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +589
System.Web.UI.WebControls.ListControl.OnDataBinding(EventArgs e) +101
System.Web.UI.WebControls.ListControl.PerformSelect() +34
System.Web.UI.WebControls.BaseDataBoundControl.DataBind() +30
System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +105
System.Web.UI.WebControls.ListControl.OnPreRender(EventArgs e) +23
System.Web.UI.Control.PreRenderRecursiveInternal() +83
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Control.PreRenderRecursiveInternal() +155
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +974
My SQL Command is like this >> SELECT * FROM [Bed] WHERE WardID = @WardID AND BedStatus = 'Available' AND BedNo NOT IN (SELECT BedNo FROM [AdmissionDetail], [Admission] WHERE ([AdmissionDate] <= @AdmissionDate AND [DischargeDate] >= @DischargeDate AND AdmissionStatus <> 'Discharged' AND [AdmissionDetail]AdmissionID = [Admission]AdmissionID))
I'm using Visual Studio 2013 and using asp:DropDownList and asp:SqlDataSource to do this. I have 4 table which is Admission, AdmissionDetail, Ward and Bed.
You are missing dot between table alias
and column name
in where
clause
..[AdmissionDetail].AdmissionID = [Admission].AdmissionID
Also make a note of few points.
Always use proper INNER JOIN
to join two table instead of old style commma separated join and keep the filters alone in where
clause
Instead of Not In
clause Not exists
which may boost the performance and NOT IN
will fail when sub-query
returns any NULL
values
SELECT *
FROM [Bed] b
WHERE WardID = @WardID
AND BedStatus = 'Available'
AND NOT EXISTS (SELECT 1
FROM [AdmissionDetail]
INNER JOIN [Admission]
ON [AdmissionDetail].AdmissionID = [Admission].AdmissionID
WHERE b.bedno = BedNo
AND [AdmissionDate] <= @AdmissionDate
AND [DischargeDate] >= @DischargeDate
AND AdmissionStatus <> 'Discharged')
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.