dates in SQL-clauses

Posted on 1998-08-03
Last Modified: 2010-05-03
I have dBase IV database where is date field and date format is like this: 20.7.1998 (day.month.year).

Then I have Data component and I wanna set components RecordSource property in a runtime. I tryed this but this isn't working.
Data1.RecordSource = "SELECT * FROM " + myDB + " WHERE Date >= #24.7.1998# AND Date <= #24.7.1998#"

Why this isn't working? Could you give me an example?

How I set it if those Dates are variables?

Thanks in advance!
Question by:majala
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LVL 14

Expert Comment

ID: 1467565
Did you tried your SQL like this :

Data1.RecordSource = "SELECT * FROM " + myDB + " WHERE Date >= #24/7/1998# AND Date <= #24/7/1998#"

/ instead of . between day,month, year.

Expert Comment

ID: 1467566
Try this:

Data1.RecordSource = "SELECT * FROM  tablename  WHERE Date >= ' 24/7/1998' AND
      Date <= '24/7/1998' " 

Data1.RecordSource ="SELECT * FROM  tablename  WHERE Date >= ' " & datevar1 &" '                                   AND  Date <= ' " & datevar2 &" ' "

The datatype in the database should be date and the format being sent should match.
Also your system date format should match the database.

Expert Comment

ID: 1467567
When you set a record source property you must use valid Jet SQL syntax (similar to ANSI). For dates this means that you must use the American "mm/dd/yy" format. You must rephrase your date using something like:

dim d as date
Data1.RecordSource = ".....#" + Format("mm/dd/yy", d) +"#..."

You can avoid this by specifying the month as a string Jan/Feb/etc.

You should try to avoid periods (although you can use them with Format() if the Windows country settings are set correctly). The database engine will provide the neccessary conversion to the format of your database.
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Author Comment

ID: 1467568
Vinoopauls: Answer you gave didn't work. I guess there's nothing wrong in your answer (I didn't got any errors when I ran my program) but I think that I have to use those #-marks if play with dates?

That comment given by WATY did work. If you send your answer as a question then I will grade your answer. Would you at a same time give me an example how to do if those dates are variables?
LVL 14

Accepted Solution

waty earned 30 total points
ID: 1467569
Did you tried your SQL like this :

Data1.RecordSource = "SELECT * FROM " + myDB + " WHERE (Date >= #" & Format("DD/MM/YYYY", yourDate1)& ") AND (Date <= #" & Format("DD/MM/YYYY", yourDate2) & "#)"


Author Comment

ID: 1467570
Actually I got it work without those format-clauses:

criteria = "SELECT * FROM " + myDB + " WHERE Date >=#" + myDate1 + "# AND Date <= #" + myDate2 + "#"

LVL 14

Expert Comment

ID: 1467571
It is quite usefule to use the format when you users coming from different countries (like I have here) and having different date format
LVL 14

Expert Comment

ID: 1467572
It is quite usefule to use the format when you users coming from different countries (like I have here) and having different date format

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