PRB: ODBC Query Fails with Non-American Date Format

• Microsoft Data Access Components versions 2.0, 2.1
• Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0, 5.0a, 6.0

SYMPTOMS

When executing an ODBC Query against Visual FoxPro tables using the Visual FoxPro ODBC Driver, no records are returned when the WHERE clause includes a date that is not in AMERICAN date format.

CAUSE

The Visual FoxPro ODBC Driver only accepts dates in a strict AMERICAN date format.

RESOLUTION

Convert any dates that are passed in WHERE clause of the SQL Select statement to an AMERICAN date format.

STATUS

This behavior is by design.

MORE INFORMATION

The default Visual FoxPro date setting is AMERICAN. Date formats, however, may be set to the following formats:

Date Setting	Date Format
AMERICAN	mm/dd/yy
ANSI	yy.mm.dd
BRITISH/FRENCH	dd/mm/yy
GERMAN	dd.mm.yy
ITALIAN	dd-mm-yy
JAPAN	yy/mm/dd
TAIWAN	yy/mm/dd
USA	mm-dd-yy
MDY	mm/dd/yy
DMY	dd/mm/yy
YMD	yy/mm/dd
SHORT	Short date format determined by the Windows Control Panel short date setting.
LONG	Long date format determined by the Windows Control Panel long date setting.

Steps to Reproduce Behavior

1. Create a program file named "Odbctest.prg," using the following code:




CLEAR
DO CASE
   CASE "6.0"$VERSION()
      lcConnStr="DRIVER={Microsoft Visual FoxPro Driver};" + ;
         "Exclusive=No;SourceType=DBF;SourceDB="+HOME(2)+"DATA"
   CASE "5.0"$VERSION()
      lcConnStr="DRIVER={Microsoft Visual FoxPro Driver};" + ;
         "Exclusive=No;SourceType=DBF;SourceDB="+HOME()+"SAMPLES\DATA"
   CASE "3.0"$VERSION()
      lcConnStr="DRIVER={Microsoft Visual FoxPro Driver};" + ;
         "Exclusive=No;SourceType=DBF;SourceDB="+HOME()+"SAMPLES\DATA"
ENDCASE
*!* Create An ADO Connection
oConnection=CREATEOBJECT("ADODB.Connection")
oConnection.ConnectionString = lcConnStr
oConnection.CursorLocation   = 3
oConnection.OPEN

*lcSQL="SELECT * FROM ORDERS WHERE ORDER_DATE < {07/22/93}"
lcSQL="SELECT * FROM ORDERS WHERE ORDER_DATE < {93/07/22}"
*!* Create An ADO recordset
rs=CREATEOBJECT("ADODB.Recordset")
rs.activeconnection         = oConnection
rs.CursorLocation           = 3
rs.cursortype               = 1
rs.LockType                 = 3
rs.OPEN(lcSQL)
IF !rs.EOF
   rs.movefirst
   DO WHILE !rs.EOF
      ? rs.FIELDS(0).VALUE
      rs.movenext
   ENDDO
ENDIF
rs.CLOSE
oConnection.CLOSE  

2. Observe that no records are returned or displayed.



3. Comment the following line of code:




lcSQL="SELECT * FROM ORDERS WHERE ORDER_DATE < {93/07/22}" 

4. Uncomment the following line of code:




lcSQL="SELECT * FROM ORDERS WHERE ORDER_DATE < {07/22/93}" 

5. Re-run the program and observe that data are returned and displayed on the screen.

Additional query words:

Keywords          : kbDatabase kbMDAC kbODBC kbVFp600 KbDBFDBC kbGrpFox kbDSupport 
Version           : WINDOWS:2.0,2.1,3.0,3.0b,5.0,5.0a,6.0
Platform          : WINDOWS 
Issue type        : kbprb 

Last Reviewed: June 30, 1999