is there a way to clear an entire column in a datasheet in access? i can just right click on it and delete it but that will affect the structure, i just need to clear all the records. how do i do this?
perhaps the question i should be asking is how do i clear the entire contents of a datasheet in access?
Use an update query, e.g.
UPDATE YourTable
SET YourColumn = NULL
There doesn't seem to be a way to do this directly from the UI, which kind of makes sense.
See
Update data by using a query - Microsoft Office Online
UPDATE table_name
SET field_name = NULL;
Much simpler: right click on the column header in access, select copy. Now go to excel and paste into a excel column. Now hit the delete key, then copy that. Go back to access right click column header and paste. Done.
Note: When selecting what to copy in excel may want to exclude column header or may get extra blank record.
Use Replace All function for CURRENT FIELD, FIND WHAT = * and REPLACE WITH = blank. Took 10 seconds to blank out 22600 records. Make sure you LOOK IN = CURRENT FIELD and that field is highlighted.
right click on upper left square of the datasheet, click DELETE RECORD
Related
Maybe that stupid question, but I don't know how to describe my problem to uncle google.
I have two simple tables with 3 rows: ID, Name, SomeVal;
Now I want update them with merge, and that's simple:
MERGE Locations T
USING Locations_2 S ON T.ID=S.ID
WHEN MATCHED THEN
UPDATE
SET
T.Name=S.Name,
T.SomeVal=S.SomeVal;
Ok, that works, but I wrote every column name by hand. So, when I want to update for example table with 30 columns, writing everything by hand will be painful. So, is there any option to update every column in the table no matter how many columns it has?
I tried "*". It is UPDATE SET T.*=S.*, and that didn't work.
What I normally do when I want to be time efficient (or lazy, depending on your view) is this:
Run this command:
sp_help TableName;
Copy/paste the first column, then hold down Alt whilst dragging the mouse cursor in front of the column names. This way I can then type one comma in front of all the fields. Then I do the same after the field name except with an = sign.
That's the only shortcut I can think to help you, and has saved me hours of typing over the years.
No. Merge statements are very verbose. You can hack a shortcut by scripting your table as CREATE, copy the column names using SHIFT + ALT to select a large swath of them, then paste them into the MERGE query, hit space, add the = sign, then paste again.
The statement is one direction, (i.e., you can't update S with T; only T can be updated) so you don't strictly need to provide the source/destination alias for each column.
I am trying to stop a name from appearing in a listbox that is linked to a query. The listbox shows records and fields from a table.
I am unable to just type the following in the criteria field:
Not "Administration"
or
<> "Administration
I am not sure why but I think it might work if i add it in code instead. How do I do this.
Thanks
Probably the field contains invisible characters or leading/trailing spaces. You can check this easily if you change the criteria to = "Administration". If query returns no rows, the data is not exactly equal. You can try criteria Not Like "*Administration*", but this way may not work for all data. Correct condition is <> "Administration"
You have to edit the listbox RowSource property, as follows:
1- show the listbox properties window
2- go to RowSource property under 'Data' Tab
3- click the button next to RowSource property (which will open a Query Editor window)
4- Add the condition:
Trim([ColumnName])<>"Administration"
where you replace ColumnName with your actual column name
I hope this helps out.
(Sorry I'm still using an older MS-Access release nevertheless you should get the idea).
you most probably going to think "what an idiot" but remember i never done any type of coding before so this is all new to me,
My problem are that i'm working on a HUGE excel sheet with loads of data that is not needed. i need to sort the data into a few columns, i only need column "A,K,AN,AQ" but in column "AS" i only need certain values (yes,no,blank) i only want the yes and blank values. like i said never done any coding before but i know that you can use an macro to do it so please help, how do i go about this?
before trying to get into macros, try to use functions with if else statements. They are quite easy to handle. Like: If (yes) then put it into X. Later, you could select all needed. Also, check the, how the dollar sign is used
use this links to see, if it is something for you.
One quick and dirty way of getting this job done would be to:
Delete the columns you don't need.
Select all cells in the range you're interested in, click the Insert menu, and choose "Table". If your columns have titles, select the box for "My Table has Headers."
-This turns your data into an array so that Excel recognizes that each row is an entry (instead of thinking that the cells are unrelated).
Now you can use the filter icon in the column headers to select and display only the rows containing the values in column X that you're interested in.
Note that there are some limitations to what the table feature is good for, so, as always, whether this is a good solution for you depends on what you want to do with the data.
Is there an expression that I can use in MS Access ,to highlight Duplicate entries in Reports?
I tried something like Expression is : Count(*)>1 but it doesn't work.
Br,
I suspect that the original query will need to be bulked up with a sub-query that has an ID column and count of ID. The outermost query will then need to also return the ID count.
Within the report you'd then need add another field that would show the linked ID count if it was > 1.
Access reporting (and forms) allows conditional formatting to be used in a similar way to excel.
See Ribbon: Report Design Tools>Formt>ControlFormatting...
It will let you change the format of a control depending on the value it, or another control, contains.
It's a very nice feature and will also let you add bar charts to you list forms to graphically represent the values sorted in a control.
However, the data set will need to have a column that indicates whether the current row has duplicate records. The snippet from you current query that you provided (that I repeat below) will not do this:
...OR (((Object.Key) In (SELECT [Key] FROM [Object] As Tmp GROUP BY [Key] HAVING Count(*)>1 )));
Without seeing the whole query I can't really help much, but you will need to remove the use of IN and make the SELECT statement a subquery of the main SQL Statement. The main query resultset will need to be LEFT JOINED to the sub query using the Key field. Because of the LEFT JOIN you can use "isnull(Key)" in the SELECT clause and isnull(Key) will be true for non-duplicate rows.
You can then refer to thiscolumn in your conditional formatting
I hope this makes some sense.
You
For a quick and dirty way to highlight duplicate data:
Select the object you want to highlight if it's duplicated, and make
the background white (or whatever the colour of your background is).
Create a copy of the object that you want highlighted if it's
a duplicate.
Format the copy so it has a highlight, and/or add extra text
(eg: DUPLICATE)
Put the copy behind the original (so it can't be seen).
On the original object, select "Hide duplicates" in properties.
Ensure "Hide duplicates" is NOT selected on the copy.
So when the duplicate appears, Access will hide it, but then the object you've created that was originally hidden beneath now becomes visible - effectively highlighting the field.
(Unfortunately it will only highlight the field itself, not the entire section.)
hey guys, could someone show me the simple update query through vb? I need to add new fields to the table (just 3) and add a couple text boxes on a form so that users can add some additional data relative to the record (which is already what this form is based on).
So the first form I have is a form that populates a list, when the user double clicks on a selection from that list, it opens a new form, so that the ID of the the table that is tied to this form that I need to add the these text boxes on (all the combo boxes and text boxes relative to one record are tied to the active form at this point, however there are all unbound. On a button click there is already vb that saves the information to the table). I did not create this however, it was built by someone who is not there anymore, and apparently is better than I at this stuff. My problem is that there is soooo much vb that checks for records, and various sql statements based on case, that I cannot decipher it to its simplest form.
So I was looking for a simple example of an update sql statement in vb so I can try to break this apart.
I need it to update the record based on the ID: sql WHERE RecordID = me.RecordID
I actually thought I knew how to do this based on examples, however every time I try, then try to run on button click, I get a run-time error of SYNTAX error, and the debug just highlights the db.execute(sql) part. So I tried to get the resulting immediate window of the sql statement, and it looks fine to me:
UPDATE tblMain
SET [Name] = "John Doe",
[DATE] = #9/30/2009#,
[TYPE] = "TypeA",
WHERE RecordID = 958;
Can I update a table without accounting for every field in the table (because this one has about 15 plus the new 3, so I am ignoring about 14 fields here, but I do not want to alter those anyway???
So as always, I appreciate the help yall!! Thanks!
EDIT:
Sorry I always forget this....I was actaully trying it DAO....
Dim db as DAO.Database
Dim sql as String
set db = CurrentDb
etc
You were thaaat close! You have a simple extra comma after your last column. Get rid of it and it works fine.
UPDATE tblMain SET
[Name] = "John Doe",
[DATE] = #9/30/2009#,
[TYPE] = "TypeA"
WHERE RecordID = 958;
Yes, you can absolutely update only a few columns rather than all of them. That is a best practice, BTW.
Finally, It's considered bad practice to name your columns after reserved words like "Name" and "Date", but I know you inherited this.
You were wise to include Debug.Print sql in your code. bpayne already pointed out the extra comma in your SQL statement.
I want to point out another trouble shooting technique you may find useful to debug SQL statement problems.
Copy the statement from the Immediate Window, and paste it into the SQL View of a new query. Modify the query in the query designer until you can get it working, then revise your VBA code to generate a matching SQL statement.
In this case you might not have noticed the extra comma. However, you could create another new query and build the UPDATE statement from scratch in the query designer. After getting that one working, you could compare its SQL View to the failing query.