ACC: Query with Time Criteria Returns No Records from Microsoft SQL Server |
The information in this article applies to:
-
Microsoft Access versions 2.0, 7.0, 97
Moderate: Requires basic macro, coding, and interoperability skills.
SYMPTOMS
When you run a query based on a linked (attached) Microsoft SQL Server
table that contains a Date/Time field, and the criteria for the Date/Time
field contains a literal time value, Microsoft Access returns an empty
result set.
CAUSE
When a linked SQL Server table contains a field with a data type of
Date/Time, and you insert a time value such as 12:35:00 P.M. into the table, the following calls are made by the SQL Server ODBC driver:
SQLPrepare :
INSERT INTO "dbo"."tblTimeTest" VALUES (?)
SQLBindParam:
12:35:00
Microsoft SQL Server then converts the value 12:35:00 to the following:
1899-12-30 12:35:00.00
When you run a query in which the Criteria row for the Time field contains a literal value such as #12:35:00 PM# against this linked table, the SQL Server ODBC driver sends the following command to the SQL Server:
SQLExecDirect:
SELECT "dbo"."tblTimeTest"."TimeTest" FROM "dbo"."tblTimeTest" WHERE _
("TimeField" = {t '12:35:00'})
RESOLUTION
Use either of the following methods to resolve this problem.
Method 1
Create a parameter query in Microsoft Access. You can use the query-by-form
technique and specify a control on a form as a parameter; you can also
define the parameter in the query itself and specify its data type as
Date/Time. For example:
Field: TimeField
Criteria: [Enter Time]
For more information about the query-by-form technique, please see the
following article in the Microsoft Knowledge Base:
Q95931 ACC: How to use the Query-by-Form (QBF) Technique
Method 2
Create the following expression in the query to extract the time portion of
the field:
Expr1: CVDate(Format([<Name of Time Field>],"hh:nn:ss AM/PM"))
NOTE: If you are using Microsoft Access version 2.0, be sure to type the alias Expr1: along with the rest of the expression to avoid receiving a
syntax error message.
You can then enter the literal time value enclosed in number signs (#) on
the Criteria row of this expression.
STATUS
Microsoft has confirmed this to be a problem in the Microsoft products listed
at the beginning of this article.
MORE INFORMATION
Steps to Reproduce Behavior
- In a Microsoft SQL Server utility (such as isql/w), run the following
commands:
create table tblTimeTest (ID int, TimeField datetime)
go
create unique index tblTimeTest_ndx on tblTimeTest (ID) - Start Microsoft Access and create a new database.
- On the File menu, point to Get External Data, and then click Link Tables. If you are using Microsoft Access version 2.0, click Attach Table on the File menu.
- In the Link dialog box, click ODBC Databases in the Files Of Type box. If you are using Microsoft Access version 2.0, click <SQL Database> in the Data Source box.
- In the Select Data Source dialog box, click the data source to connect to your SQL Server database, and then click OK. Supply any necessary log on information, and click OK.
- In the Link Tables dialog box, select the tblTimeTest table created in Step 1, and then click OK.
- View the table in Datasheet view. Add the following values to the
table:
ID TimeField
-- ----------
1 12:35:00 - Create the following new query based on the linked SQL Server table:
Query: qryTest
-------------------------
Type: Select Query
Field: ID
Table: dbo_tblTimeTest
Field: TimeField
Table: dbo_tblTimeTest
Criteria: #12:35:00# - Close and save the qryTest query that you created in Step 8.
- Run the qryTest query. Note that Microsoft Access returns an empty or null recordset.
REFERENCES
For more information about specifying the data type of query parameters,
search the Help Index for "data types, parameter queries."
Additional query words:
linking attaching
Keywords : kbinterop kbdta QrySqlvw QryParm
Version : WINDOWS:2.0,7.0,97
Platform : WINDOWS
Issue type : kbbug
