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.
Related
I have a MySQL table of records with several fields.
These records are shown and updated live in the browser. They are displayed in an order choosen by the user, with optional filters also choosen by the user.
Sometimes a change is made to one of the records, and it may affect the order for a given user.
In order to position the message correctly in the list, I need to find where its new offset falls after the change to the record. Basically, I need to get the "id" for the record that now comes before it in the MySQL results, so that I can use Javascript on the client side to reposition the record on the screen.
In raw SQL, I'd do something like this:
SET #rank=0;
SELECT rank
FROM
(SELECT #rank:=#rank+1 AS rank,
subQuery.id AS innerQuery,
FROM ...{rest of custom query here}... as subQuery)
AS outerQuery WHERE outerQuery.innerQuery={ID TO FIND};
Then I can just subtract 1 from the resulting rank, and find the ID of the question that comes before the record in question.
Is this kind of query possible with Laravel's query builder? Or is there a better strategy than what I've come up with here to accomplish the same task?
EDIT: There are a lot of records. So if possible I'd like to avoid loading all the records into memory to find the offset of the record. They are originally loaded on the screen in an "infinite scroll" type method, since it would be too much to load all of them at once.
I am currently using Oracle sql developer v4.0.3.16. When I do auto-complete of table columns, they show up in ascending order. I've got table with over 200 columns. Auto-completion window shows only 40 positions. When i choose last position '...' - window is being refreshed with all column names, but still in ascending order.
How can i change the way of presenting result in prompt, to show all column names in order as is returned by 'DESCRIBE table' command?
You can't influence the order, we do alphabetical only. Main reason is because a general user isn't going to have your data model memorized.
To get the best bang for your buck with this feature, you're going to want to type the first 1 to however many characters of your column or table or procedure name.
We don't show 200 columns by default, because that's not very helpful at all.
But give us the first letter, and now things become much more interesting.
Starting in a version very close to what you have, the automatic insight feature doesn't even make a suggestion unless you have 10 or fewer 'hits' - although this is configurable.
Say i have something like this:
somerecord SOMETABLE%ROWTYPE;
Is it possible to access the fields of somerecord with out knowing the fields names?
Something like somerecord[i] such that the order of fields would be the same as the column order in the table?
I have seen a few examples using dynamic sql but i was wondering if there is a cleaner way of doing this.
What i am trying to do is generate/get the DML (insert query) for a specific row in my table but i havent been able to find anything on this.
If there is another way of doing this i'd be happy to use but would also be very curious in knowing how to do the former part of this question - it's more versatile.
Thanks
This doesn't exactly answer the question you asked, but might get you the result you want...
You can query the USER_TAB_COLUMNS view (or the other similar *_TAB_COLUMN views) to get information like the column name (COLUMN_NAME), position (COLUMN_ID), and data type (DATA_TYPE) on the columns in a table (or a view) that you might use to generate DML.
You would still need to use dynamic SQL to execute the generated DML (or at least generate static SQL separately).
However, this approach won't work for identifying the columns in an arbitrary query (unless you create a view of it). If you need that, you might need to resort to DBMS_SQL (or other tools).
Hope this helps.
As far as I know there is no clean way of referencing record fields by their index.
However, if you have a lot of different kinds of updates of the same table each with its own column set to update, you might want to avoid dynamic sql and look in the direction of statically populating your record with values, and then issuing update someTable set row = someTableRecord where someTable.id = someTableRecord.id;.
This approach has it's own drawbacks, like, issuing an update to every, even unchanged column, and thus creating additional redo log data, but I believe it should be considered.
I'm working on a VB6 program that connects to a SQL Server 2008 R2 database. In the past I have always used the MSFlexGrid control and populated it manually. Now, however, the guy who is paying me for this wants me to use data-bound grids instead, which forces me to use the MSHFlexGrid control because I'm using ADO and not DAO. So, I have two questions...
First, how would I move a column in a MSHFlexGrid? For example, if I wanted the third column to appear as the sixth column in the grid, is there a simple single line of code that would do that?
Second, believe it or not, I've never had to do anything in a grid other than display the data, as is, from a recordset. Now, however, I have a recordset with some fields that contain just ID numbers that refer to records in other files - for example, a field containing an ID number referring to a record in the Customers table, instead of the field containing the customer's name. What is the easiest way to, instead of having a column showing customer ID numbers from the recordset, having that column show customer names? I thought I read somewhere that there's a way to embed a sql command in a MSHFlexGrid column, but if there is I wouldn't know how to do it. Is this possible, or is there a simpler way to do it?
TIA,
Kevin
The column order would typically be handled by your SELECT statement.
Say you have a Pies table that has a FruitID foreign key related to the FruitID in a Fruits table:
SELECT PieID AS ID, Pie, Fruit FROM Pies LEFT OUTER JOIN Fruits
ON Pies.FruitID = Fruits.FruitID
This returns 3 items: ID, Pie, and Fruit in that order.
Moving columns after the query/display operation is rarely used, but yes ColPosition can be used for that.
Wow! VB6.... Back to the future! :-)
You can move Columns using the ColPosition Property.
This article shows how you could setup the grid to display hierarchical data.
If you just want to display the customer name on the same line as the main data then that is doable as well by just creating the proper SQL for your data source. For that matter you can control the column order the same way as well.
Now, how about considering upgrading to .Net? Just kidding..... No, I'm not. OK. I am, maybe. :-)
Anyone ever see how fogbugz sorts their tables? When you click to sort the column, they actually break the table up into many small tables that have each category of info.
Wondering if anyone knows how they do this?
Looking to implement this feature.
If you take a look through the cases page, and sort you can see what I mean.
Any help would be AWESOME!
Still Haven't figured this one out.
EDIT: #Peter, I don't want to postback and recreate a table every time the header title is clicked for a sort. I also want to know if their is a generic solution for this. If I click on the header to sort, by the way of javascript, it seperates the "one" table into many and I want to know if their is any generic solution for this because its just a MUCH better way of viewing a sorted Table.
EDIT: I do need a javascript sorter, but if you look right down at the implementation of fogbugz, it produces a different result...
Yup, Rich got it (I coded this feature into FogBugz a long while back).
If you have to do this on the client you have no choice but to sort the data, iterate through it generating table row after table row, and every time you hit a new sort value you create a new thead w/ the appropriate information.
To be honest it would be a pretty cool modification to this jQuery plugin: http://tablesorter.com/docs/ and you'd be able to leverage a lot of their work. If you're going to put in the time and create a general solution, might as well make it accessible to the community.
Without knowing specifically how Fog Creek accomplishes this, the way that I would do it is to output a table header, then iterate through the list, outputting a footer and a new header each time the group value changed.
Not sure what answer do you expect. SQL query for this would simply use ordering on selected column, and UI would start new table each time this value changes.
Here is screenshot of FogBugz with this sorting, after clicking on Priority column.
http://img297.imageshack.us/img297/6974/76755363ee3.png
Of course, starting new table doesn't make sense for every column (title, case #).
Edit: If I understand correctly, you're looking for a way how to do this in a browser without loading new page. If this is the case, I would suggest at least some server-side support, which would return your data in correct order, and properly structured for subtables (in xml/json/whatever you use). Your javascript will use this data to recreate tables. I am sure others with more web-ui experience will provide you with better answers.
I've used the Sortable Tables script from Kryogenix with some good results.
I don't know if it is relevant, but we store the results of a query in a temporary table in SQL, and then reference current-row-less-one to see if a Category has changed, and indicate this in the resulset.
In some instances we "indicate" this with a column containing
<tr><td colspan=999>Category Heading</td></tr>
so that the web page can just "inject" that into the table it is building.
SELECT Col1, Col2, ...,
[CATEGORY] = CASE WHEN T1.CategoryCol <> COALESCE(T2.CategoryCol, '')
THEN '<tr><td colspan=999>' + T1.CategoryCol + '</td></tr>'
ELSE ''
END
FROM #MyTempTable AS T1
LEFT OUTER JOIN #MyTempTable AS T2
ON T2.ID = T1.ID - 1