In an interactive grid, what is the best way to validate for duplicate values in a column. I have a requirement to check if a date column exists for more than one row. Is there an api or a declarative way to not allow more than one row with the same date.
APEX version : 20.1
Thanks,
Found this neat example at https://lschilde.blogspot.com/2020/04/interactive-grid-validation-duplicated.html very useful
I have a requirement where 300 columns had to be processed. I am trying to achieve this using IG automatic row processing (DML). When writing the code in the editor I get a error stating 'Value too long by 2015 characters'.
I suppose this is an Oracle Apex limitation. Can someone please share their views on this?
When writing the code in the editor ...
I'd say that your problem isn't related to number of columns, but a large query which can't fit into "SQL Query" item of the Page Designer.
Which Apex version do you use? I can't tell for sure (as I don't know it), but my impression is that Apex up to version 4.2 had that item limited to VARCHAR2(4000) so - if your query is larger than that, it won't fit (such as in your case - query you wrote is 2015 characters longer than the maximum size the item allows). In 5.x version, you can put a whole lot of query into the item (as if it was modified to a CLOB).
Now, as you use Interactive Grid and it appeared in 5.x version, huh ... maybe what I wrote above isn't entirely true. Unfortunately, you can't switch to a query whose source is a function that returns query (such as in Classic Reports), as you could write a (stored) function and simply call it from Apex.
As you said that you used automatic row processing, did you put too much code somewhere in there?
On the other hand, I Googled a little bit, looking for limit of column numbers in the IG - couldn't find anything official, but someone complained (here, on StackOveflow) that they tried to create an IG with over 100 columns, and it didn't work.
So, yes - maybe you hit the limit, but I can't confirm it. Hopefully, someone who knows Apex better will be able to assist. Alternatively, consider asking the same question on OTN forums, as people who designed Apex answer questions there.
I am newbie to BIRT and unfortunately my first task is over complicated.
I want to create table like this
Birt Report Snap
the columns in this picture must be dynamic. the data for the column name is in database and I have to fetch it and create columns on the go. 2nd to put values against it.
kindly tell me if this thing is doable in birt. I am new to this so please don't give negative ratings
thanks.
I believe what you are looking for is called a Cross Tab Table.
Here is a tutorial video on it: BIRT - Cross Tab Table
In addition to SBurris answer, which is the way you should try first, I can assure you from my experience that what you want is in fact doable with BIRT, and even in two different ways.
However, some of the minor aspects might be a bit quite tricky for beginners, e.g. the merged cells in the column header, the different background colours and border widths for the columns. So, these style aspects shouldn't matter at first, you can tackle them later.
The first, by far easiest and standard way to achieve this kind of report layout is a cross tab, as SBurris said.
The second option is - depending on the database backend - to use a "normal" Table report item in they layout and to "create the cross tab" with SQL.
This is more powerful IMHO as the BIRT Cross Tab report item, but also more complicated.
For examples, see here:
Pivot / Crosstab Query in Oracle 10g (Dynamic column number)
Pivoting rows into columns dynamically in Oracle
How to do Pivoting in Oracle 10g
(you get the idea)
To use this with BIRT, you'll have to select the column title values in addition to the cell values.
You have to decide how many columns do/should fit on your page (if you're using PDF output).
You can use the maximum aggregate function in the visibility expression of the columns to hide empty columns.
If the number of logical columns exceeds the number of columns for a single page, you can extend the idea further by dividing the cross tab into several, each with at most N columns.
However, note that this approach will need an experienced BIRT developer...
I'm using Toad for Oracle 12.5 and a little thing anoy me : when I look into the "Data" tab of a table, the row order is all jumbled up.
On any other DB software I used (SQL developper, phpmyadmin, etc), the default data view would retur the rows ordered by the primary key
So, I would like it to automaticly by default sort the data in the "Data" tab of each table to the first column, or even better, to the table primary key.
I've looked in the options but I can't see anything related to this.
Have some of you had the same problem ?
No oracle client that I have seen ever tacks an "order by" onto a statement on its own accord. It returns what the query returns in the order (or lack thereov) that it receives it.
Now it may LOOK ordered if the rows were inserted in order, but that is a fluke. Period.
And frankly, I'd be upset if a UI arbitrarily added expensive sorts to my queries unless I specifically told it to.
I have some BIG tables. presuming that I want the UI to take the time to scan the index and grab the lowest PK values just because I opened the DATA tab? No. Dear me - NO!
If I want it ordered, I will open the sort/filter dialog and specify so, or click on the appropriate column header to sort the results.
ADDITION:
If there ARE some tables where you want this behaviour (I can see the convenience if checking code tables for example), then use the sort/filter dialog on the data grid for that table to set an order by and TOAD will remember that setting for that table in this schema until you remove it. So you CAN set this behaviour where you want and not deal with the performance aspects where you don't.
I am trying to remove all references to a table from a Crystal XI report. Crystal is telling me that a column from that table is currently being used, because there is a little green check mark over the field in the field viewer. Also, if I try to remove the entire table, I get a warning. The warning is almost useless though because it doesn't tell me where the field is used. Now, back when programmers were real programmers, and mice were things cats chased, I could just grep a directory or file and find all references to a variable I was interested in. But how do I do this in Crystal? I have already tried exporting the report to a Report Definition, which helped find some instances of the troublesome field. Unfortunately, that format does not include all formulas, just some. Please tell me I don't have to buy a third party app (or write my own COM thingy) just to do this seemingly simple thing.
EDIT to add details about tangential point:
In case anyone is wondering, I am not crazy - I have duplicated the issue where a formula's definition does not show up in the exported Report Definition. I created a new blank report, created one formula named stealth that returns 1234. I then used that formula in the Section Expert for the details section, in the "suppress" formula, setting it to {#stealth} == 0. the use of the formula shows up, but not the definition. So when my unwanted column was used in the formula, I was not be able to find it! Here's what the rpt def looks like (after deleting some blank lines):
Crystal Report Professional v11.0 (32-bit) - Report Definition
1.0 File Information
Report File:
Version: 11.0
2.0 Record Sort Fields
3.0 Group Sort Fields
4.0 Formulas
4.1 Record Selection Formula
4.2 Group Selection Formula
4.3 Other Formulas
5.0 Sectional Information
5.1 Page Header Section
Visible, Keep Together
5.2 Page Footer Section
Visible, New Page After, Keep Together, Print At Bottom of Page
5.3 Report Header Section
Visible, New Page Before
5.4 Report Footer Section
Visible, New Page After
5.5 Details Section
Visible
Subsection.1
Visible, Keep Together
Format Formulas
Visible: {#stealth}= 0
If all else fails ...
File -> Export -> Export Report, then choose the Report Definition (TXT) option.
That will give you a plain-text representation of every element of the report. You can grep or CTRL-F or (insert search tool of your choice) through that. "Find in Formulas" usually works, but I've had to go the export route a couple of times, for no apparent reason.
Edit: Of course, if I'd bothered to completely read your post, I'd see that you've already done this.
Very curious.
If you right click on the field in Field Explorer and select Find in Formulas, it should bring up a dialog listing all of the places it is being used in formulas. On the left hand side of the dialog is a tree of all the possible places it could be, including oddball places like record selector and page formatting functions. Unfortunately, it does not seem to list running total fields.
EDIT: Oops, all the places it exists is listed at the bottom of the dialog; the tree view is the entire "DOM" of the report.
I know this is an old post, but...
Not knocking the Find in Formulas, it's been saving me today, but i was having trouble finding the last instance of the field. Even after all of the formulas and the droppings on the report were taken care of, I still had one lone use hiding somewhere.
I found it hiding as a Subreport Link. Right click on the Subreport -> "Change Subreport Links..." and there was the culprit. Dropping in this post because I figured someone else might have this problem too.
Fields can also sometimes be hiding within "Record Sort Expert"
Responding to an old post, but ran into a similar issue. I had a group based on the formula I wanted to delete that had a specified order. When I changed the grouping to a different field, the specified order remained. When I removed the specified order, my formula could be deleted.
This was tested on XIr2...
You change the tables datasource through the "set datasource location" dialog. Now, when it goes into the column mapping mode, uncheck match-type and pick a new column that would cause an error in a formula. (i.e if the column you're looking for is a string replace it with a datetime column). Go to the preview and you should get an error box like "A string is required here.", close that error and up pops the offending formula!
One more suggestion. After following a lot of the suggestions here, my report was still telling me the formula was in use. I had to close the report. When I opened it again, the check mark was gone and it let me delete it. This was on Crystal v 11.0.0.1282
In my case the Formula Field happened to be part of an old Running Total Field, which itself was not included in the report. Once I deleted this old Running Total Field I could delete the unused Formula Field.
Very late, but i use CR 2008 (12.3.0.601) and just today (6/16/2015) i am trying to document only the formulae of my report. I knew about exporting the Report Definition, and Finding a Formula in all Formulae. But there are about 50 Formulae. I discovered that the exported Report Definition didn't document all of my Formulae, but I didn't bother to uncover the logic behind that; instead, i plopped all Formulae into a section, then exported the Report Definition. Voila. Of course, i still need to cull all the unnecessary definition elements. But at least i have all Formulae.
So with all the great selections.. I still had one instance hiding from me. I found out where it was by creating a clone of the data table and renaming\deleting the field.
I then used the "Set Database Location" as suggested above to point to my new table. It did error out when it could not find that field but still didn't tell me where it really was (it just said report field).
I did NOT map it and clicked continue which deleted the field from the report. I then mapped it back to the real table and I was good.
In my case, there was a Chart, and the field was being used as one of the "on Change" fields.
Although an old post, this functional gap still exists within Crystal Reports itself. We have a fully functional 14 day trial of our third party software that uses the latest Crystal.net API to search for plain text within a library of Crystal RPT files in one fell swoop. Also searches the data saved within reports, and text within labels ... as well as datasource behind all your reports ( stored procedures, views, and table data ) with support for SQL Server, SQL Azure, MySQL, Oracle, Amazon RDS, DB2 and Access.
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