If I have a Date/Time field in Access and I need to find all the entries that are in a specific year... say 2009. If my fields are set up as MM/DD/YYYY, how would I do a query to essentially do //2009
update
Thanks for the help everyone, but I guess the issue is that I'm kind of dynamically constructing my SQL statement in ASP.
"SELECT * FROM database WHERE (datecolumn LIKE " & string & ")"
where the string ends up returning a string I constructed 'DD/MM/YYYY'. If the user inputs nothing into either of the 3 fields, I'll need do a specific query where that part is a wildcard... as in if they don't put in a day, I'd essentially need a
"SELECT * FROM database WHERE (datecolumn LIKE "*/MM/YY")"
.... which doesn't work in Microsoft Access
How about
WHERE MyDate >= '1/1/2009' AND MyDate < '1/1/2010'
You should be able to use the Year() function
Some Examples:
Year (#05/05/1985#) returns 1985
Year (#17/07/2005#) returns 2005
If your field is called "myDate" for example, you can construct a query to select everything in the year 2009 like so:
SELECT * FROM myTable WHERE Year(myDate) = 2009
This function is available in both MS Access and SQL Server, too (if you're interested).
Some links for further information:
Access: Year Function
Year Function
YEAR (Transact-SQL)
WHERE Year(DateColumn) = 2009
OTTOMH
SELECT * FROM Table WHERE DatePart ("yyyy", YourDatetimeColumn) = 2009
Related
I am vb.net newbie and working on a program which will be used as a daily-worklog. As backend I use MS ACCESS. I store the "datetime.utc.now" time in a field (type:date/time) of MS Access.
This is shown in the database like: dd.mm.yyyy hh:mm:ss
I want to see all entered items of the last 12 hours. I used many different ways, but I´m not able to fix it.
My preferred / logical (for me :-)) way to do this was:
add the parameter:
mycommand.SelectCommand.Parameters.AddWithValue("date12",OleDbType.DBTimeStamp).Value = DateTime.UtcNow.AddHours(-12)
Query the database
select * from complaints where entrydate >= #date12;
But I can't figure out why it doesn't work.
Failure message = "data types in criteria expression incompatible"
I assume the problem is the different time formats, but I'm not sure and I have no clue how I could fix it.
MS Access does not use named parameters. You use a ? for all of the placeholders in the SQL statement. You still can and should give the parameter object a name, but the value is matched to the placeholder based on position in the Parameters collection and query string rather than name.
SQL:
"select * from complaints where entrydate >= ?;"
VB:
mycommand.SelectCommand.Parameters.Add("date12",OleDbType.Date).Value = DateTime.UtcNow.AddHours(-12)
Do NOT settle for hard-coding the parameter value. What you can do is use SQL expressions to determine the date value, and avoid both parameters and string concatentation:
select * from complaints where entrydate >= DATEADD('h', -12, Now())
You can change the type to OleDbType.Date or hardcode the query:
select * from complaints where entrydate >= ( Now() - 0.5 )
Trouble inserting DateTime into Access with OleDb
As a side note, most value types are generally safe to hardcode:
"select * from complaints where entrydate >= " & DateTime.UtcNow.AddHours(-12).ToOADate()
I have the following query executed on a Linked table in Access:
Select * From table WHERE DateField = #18-Dec-2016#
This date where clause is created with the following VBA code:
strWHERE = strWHERE & "DateField = #" & VBA.Format(txtDate, "dd-mmm-yyyy") & "#"
When using the full version of Access 2016 it it sent to SQL as:
Select * From table WHERE DateField = {d 18-Dec-2016}
This works! However, when using the Access 2016 runtime, it is sent to SQL as:
Select * From table WHERE DateField = {ts 18-Dec-2016}
and it fails.
I am using SQL Server Profiler to find the exact SQL being sent.
Any ideas?
EDITS:
Tried changing format to yyyy-mm-dd
Tried added "00:00:00" to the VBA code building the where clause, and this does not change what I see sent to SQL through the profiler.
SOLVED:
For some reason, the behaviour of linked table queries is different between the full version of Access and the 2016 Runtime.
In the Runtime version, the data type of the field in the linked table is used to format the query. So because the DateField was DateTime, it passed the where clause as ts. BY creating a view and formatting the date as just a date, this was solved.
how to convert text to date in sql as listed below?
Y12-W01 to 20120102
Y12-W02 to 20120109
Y12-W03 to 20120116
and so on...
i use ms-access.
thank you in advance
regards.
You don't need a separate function, try this SQL example:
SELECT FieldName, DateAdd("ww",CDbl(Mid([FieldName],6,2))-1,DateSerial(Mid([FieldName],2,2),1,1)) AS ConvDate
FROM TableName
I think the easiest method would be to make a table of dates, with one row for each week. One field would be the source format Y12-W01 and the 2nd field would be the resulting date 20120102. Join your source data to this table on the 1st field and use the 2nd field as the date in further sql or queries.
Parse your Week and Year out of your field. I'll let you figure out that one. ;o)
Once you have the Week and Year, pass them into this function:
Function GetWeekStart(weekNum As Integer, yr As Integer) As Date
GetWeekStart = DateSerial(yr, 1, 1 + (weekNum * 7) - 6 - Weekday(DateValue("1/1/" & yr)))
End Function
I am attempting to move a stored procedure from Microsoft SQL Server 2000 to Informix 11. The original SP contains a final select statement with a GROUP BY statement that includes a converted datetime:
group by convert(varchar(8), c.startDateTime, 1)
When I convert this to Informix syntax I get a syntax error at run time:
GROUP BY (c.startDateTime::DATETIME YEAR TO DAY)::VARCHAR(10)
Can anyone please point me to how, if possible, this can be done in Informix? If this is not possible, which I suspect, how would you typically handle this in the overall query?
I think you need to convert from this:
SELECT a, b, c
FROM ...
GROUP BY (c.startDateTime::DATETIME YEAR TO DAY)::VARCHAR(10) ;
to something like:
SELECT a, b, c,
(c.startDateTime::DATETIME YEAR TO DAY)::VARCHAR(10) AS d
FROM ...
GROUP BY 4 ; --- meaning: the 4th column in the SELECT clause
In Informix, it is generally not required to convert datetime fields to character strings to manipulate them. Instead, use the extend function.
Example, if c.StartDateTime is defined as a datetime year to second e.g. 2012-10-28 23:00:00 and you want just the date portion, use extend (c.StartDateTime, year to day). This will return 2012-10-28.
Are you converting to Informix syntax for dates to varchar in mm/dd/yyyy (mssql style=1) as
TO_CHAR(c.StartDateTime,"%m/%d/%iY")
???
I’m using SQL Server 2005 and I have a table contains a column of type datetime.
In this column, I have some dates with a wrong year, and I want to replace the year part only.
For example, I have this date 2009-01-07 08:47:00.000 and I want to replace the year part only to be 2010-01-07 08:47:00.000.
Notable to mention, I have so many records with wrong year, let’s say about 2000 records.
Thanks in advance and appreciating your help
You can use DATEADD function.
UPDATE mytable SET mydate = DATEADD(year, 1, mydate)