Different column height for each column
I have problem with jTable.
I have 4 columns in my jtable. height of two columns is same and
height of two is doble the height of first two columns.
I know that height can be set to entire row by setRowHeight()
Could any one suggest solution for this.
Thanks
Thanks for your reply.
But I don't want resize all the columns.
For example two columns height 16 pixels, then rest of should be 32 pixels
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Matrix with different dimensions for each column
Hi,
I would like to have a matrix with different dimensions (rows) for each
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With a simple array it is not possible, and then I make an array (for
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Thanks,
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Get frequent data for each column of a table
What is the best way to get the most frequent data in each column of a table.
we have around 25 tables and each table has around 20 columns , so rather than writing group by for each column of table , is there any easy way to find this?
example we have table
Column A Column B Column C
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Apple 3 Monday 2 Red 3
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Group by kind of query will give this result, but with 20 tables each having 20 - 30 columns if we need similar kind of result .. is there any way to get this data.Hi,
GROUP BY (using aggregate functions) is the best way to do what you described.
PIVOT and UNPIVOT are probably what you'd want in this case. The phrase "GROUP BY" may not actually appear in your code, but you'll essentially be doing a GROUP BY.
Analytic functions (rather than aggregate functions) can do the job, too, but they'll be less efficient. Analytic functions get you results about the groups, without losing each row's identify, but in this case, losing each row's identity is eactly what you want to do. You only want 'Apple' to appear 1 time, not 3 times.
The fact that you need to do the same query on 20 different tables suggests that there's something wrong with your table design. Wouldn't it be better to have 1 big table, with a new column that has 20 unique values instead?
I hope this answers your question.
If not, please post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) from all tables involved, so that the people who want to help you can re-create the problem and test their ideas.
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Simplify the problem as much as possible. For example, instead of posting a problem with 20 tables, each having 25 columns, post a similar problem involving, say, 2 tables, each with 3 columns.
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See the forum FAQ: https://forums.oracle.com/message/9362002 -
Multi-column Index vs One index for each column
Hello everyone,
i have one table about 20 000 000 rows, some developers have to generate reports on it and i want to create indexes on this table.
The table has 34 columns, no primary key, no unique keys.
The "where..." clause of the reports usually use 8 columns but some reports uses 8 + some other columns.
can any one help me on what kind of indexes do i have to create?
1. one index for each column used in "where clause"
2. one index for 8 columns and some other indexes for other used columns
3. one index for all columns
or something else etc...
br flagi have one table about 20 000 000 rows, some developers have to generate reports on it and i want to create indexes on this table.
The table has 34 columns, no primary key, no unique keys.
The "where..." clause of the reports usually use 8 columns but some reports uses 8 + some other columns.
can any one help me on what kind of indexes do i have to create?
1. one index for each column used in "where clause"
2. one index for 8 columns and some other indexes for other used columns
3. one index for all columns
or something else etc...What's the version of your data base? what kind of database you have, DWH or OTLP? The answer might depend on the type of database as far as bitmap indexes might suit or might not depending if you are runing DWH or OLTP kind of database
Let me suppose that you are runing OLTP database and you have a where clause with 8 columns.
1) are all those where clause equalities (where col1 = and col2 =) or there are inequalities?
2) could you evaluate the most repetitive columns?
3) could you know the column that could have the best clustering factor (the column which most follow a certain order in the table)
Based on that I would suggest to create one b-tree index having 8 columns (even though that it seems for me to high) this index should follow the following points:
1) put the most repetitive column at the leading edge (and compress the index if necessary)
2) put the columns that are used in equalitity predicate first
3) put the column having the best clustering factor first
The most precise index you have the best access you could gain.
Of course that you have to know that an index access is not always good and a FULL table scan is not always bad.
Best regards
Mohamed Houri
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How to display more than one column with for each
Hi guys,
how to display more than one column with for each like below?
for each
Item1
Item2
Item3
Item4
Item5
Item6
Item7
Item8
Item9
Item10
End for each
for each
Item1 Item2 Item3
Item4 Item5 Item6
Item7 Item8 Item9
Item10
End for eachTake a look at this to see if the solution provided would work for you: https://blogs.oracle.com/xmlpublisher/entry/multi_column_row_woes
Won't you have more than 10 records in your data file ? If you are going to have only 10 items then you may be able to use position() function to limit it to 3 each..
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Header for each column of data
I am struggling to get header for each column in attached code. I would like to see this data in excel with header at the top. Also I wonder how to know which column belongs to which plot and which axis.
Solved!
Go to Solution.
Attachments:
saving for excel.vi 130 KBI would keep this in the original thread.
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Duplicate column headers for each of the rows
Header 1
Header 2
Header 3
row1 data1
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row1 data3
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row2 data2
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Header 1
Header 2
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row3 data3
Hi folks,
I want to know how to implement the table/grid format likes above described formation.
Actually I want to generate each column header for each row data in one table/grid.
Thanks for your help.I meant to delete this thread, but I do not know how to. Sorry.
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Want some discription for each column
Hi expert, I have one req.
I created my rpd with around 100 tables and 800 column. Now my user having discription of each column in on excel sheet. Now we want to show discription of each column (once we put our mouse on it in answer). So how can we do it. We dont want to write discription of each column manually. So is there any way to impliment this.
ThanksHi Gys,
Thanks for replying.
Kishore thanjks for suggestion .
User need to go our indivisual column in some place , Search that column out of 800 column and then see the discription.
So we are thinking for that type of implimentation.
Kart Thanks for link. But again we have to do it for each column manually i.e for 800 columns. But we dont want that.
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