I'm using JPA and also I have a table like below structure:
|--------------|--------------------------------|
| ID | Title | OrderNumber |
|--------------|--------------|-----------------|
| 1 | Test | 0 |
|--------------|--------------|-----------------|
| 2 | Test2 | 1 |
|--------------|--------------|-----------------|
So, It's easy to order the list by the 'OrderNumber' in queries, but I've not found an appropriate way to update/set its value in reordering operation yet (Because I have an option in user-side to change the order of the list by drag and drop).
What is a suitable way to solve this problem without any store procedure in the database?
Related
There is a database that contains several views and tables.
I need create a report (documentation of database) with a list of all the fields in these tables indicating the type and, if possible, an indication of the minimum/maximum values and values from first row. For example:
.------------.--------.--------.--------------.--------------.--------------.
| Table name | Column | Type | MinValue | MaxValue | FirstRow |
:------------+--------+--------+--------------+--------------+--------------:
| Table1 | day | date | ‘2010-09-17’ | ‘2016-12-10’ | ‘2016-12-10’ |
:------------+--------+--------+--------------+--------------+--------------:
| Table1 | price | double | 1030.8 | 29485.7 | 6023.8 |
:------------+--------+--------+--------------+--------------+--------------:
| … | | | | | |
:------------+--------+--------+--------------+--------------+--------------:
| TableN | day | date | ‘2014-06-20’ | ‘2016-11-28’ | ‘2016-11-16’ |
:------------+--------+--------+--------------+--------------+--------------:
| TableN | owner | string | NULL | NULL | ‘Joe’ |
'------------'--------'--------'--------------'--------------'--------------'
I think the execution of many queries
SELECT MAX(column_name) as max_value, MIN(column_name) as min_value
FROM table_name
Will be ineffective on the huge tables that are stored in Hadoop.
After reading documentation found an article about "Statistics in Hive"
It seems I must use request like this:
ANALYZE TABLE tablename COMPUTE STATISTICS FOR COLUMNS;
But this command ended with error:
Error while processing statement: FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.ColumnStatsTask
Do I understand correctly that this request add information to the description of the table and not display the result? Will this request work with view?
Please suggest how to effectively and automatically create documentation for the database in HIVE?
I have a cucumber feature that checks a website has processed payment files correctly (BACS,SEPA, FPS etc). The first stage of the process is to create the payment files which in-turn create expected result data in a database. This data is then used to validate against the payment processing website.
If I process one file, my feature works perfectly validating the expected results. Where I'm stuck is how I get the feature to run (n) number of times depending on the number of records/files that were originally processed.
I've tried an 'Around' hook using a record count iteration with no joy, can't see how I can fit it into an outline scenario and now think that perhaps a rake task to call the feature might work.
Any ideas would be greatly appreciated.
Here's a sample of the feature:
Feature: Processing SEPA Credit Transfer Files. Same Day Value Payments.
Background:
Given we want to test the "SEPA_Regression" scenario suite
And that we have processed a "SEPA" file from the "LDN" branch
And we plan to use the "ITA1" environment
Then we log in to "OPF" as a "SEPA Department" user
#feature #find_and_check_sepa_interchange #all_rows
Scenario: Receive SEPA Credit Transfer Files for branch
Given that we are on the "Payment Management > Interchanges" page
When I search for our Interchange with the following search parameters:
| Field Name |
| Transport Date From |
| Bank |
| Interchange Reference |
Then I can check the following fields for the given file in the "Interchanges" table:
| Field Name|
| Interchange Reference |
| Transport Date |
| File Name |
| File Format |
| Clearing Participant |
| Status |
| Direction |
| Bank |
When I select the associated "Interchange Id" link
Then the "Interchange Details" page is displayed
Update I've implemented nested steps for the feature so that I can call the database records first and feed each set of records (or at least the row id) into the main feature like so:
Feature
#trial_feature
Scenario: Validate multiple Files
Given we have one or more records in the database to process for the "SEPA_Regression" scenario
Then we can validate each file against the system
Feature steps:
Then(/^we can validate each file against the system$/) do
x = 0
while x <= $interchangeHash.count - 1
$db_row = x
# Get the other sets of data using the file name in the query
id = $interchangeHash[x]['id']
file_name = $interchangeHash[x]['CMS_Unique_Reference_Id']
Background.get_data_for_scenario(scenario, file_name)
steps %{
Given that we are on the "Payment Management > Interchanges" page
When I search for our Interchange with the following search parameters:
| Field Name |
| Transport Date From |
| Bank |
| Interchange Reference |
Then I can check the following fields for the given file in the "Interchanges" table:
| Field Name|
| Interchange Reference |
| Transport Date |
| File Name |
| File Format |
| Clearing Participant |
| Status |
| Direction |
| Bank |
When I select the associated "Interchange Id" link
Then the "Interchange Details" page is displayed
Seems a bit of a 'hack' but it works.
If you have batch processing software, then you should have several Given (setup) steps, 1 When (trigger) step, several Then (criteria) steps.
Given I have these SEPA bills
| sepa bill 1 |
| sepa bill 2 |
And I have these BAC bills
| bac bill 1 |
| bac bill 2 |
When the payments are processed
Then these sepa bills are completed
| sepa bill 1 |
| sepa bill 2 |
And I these bac bills are completed
| bac bill 1 |
| bac bill 2 |
It's simpler, easier to read what is supposed to be done, and can be expanded to more. The works should be done in the step definitions of setting up and verifying.
Using Derby, is it possible to offset by a value from the query rather than an integer literal?
When I run this query, it complains about the value I've given to the offset clause.
select
PRIZE."NAME" as "Prize Name",
PRIZE."POSITION" as "Position",
(select
PARTICIPANT."NAME"
from PARTICIPANT
order by POINTS desc
offset PRIZE."POSITION" rows fetch next 1 row only <-- notice I'm trying to pass in a value to offset by
) as "Participant"
from PRIZE
With the expectation that the results would look like this:
| Prize Name | Position | Participant |
|--------------|----------|---------------|
| Gold medal | 1 | Mari Loudi |
| Silver medal | 2 | Keesha Vacc |
| Bronze medal | 3 | Melba Hammit |
| Hundredth | 100 | James Thornby |
The documentation suggests that it's possible to pass in a value from java code, but I'm trying to use a value from the query itself.
By the way, this is just an example schema to illustrate the point.
I know there are other ways to achieve the ranking, but I'm specifically interested if there's a way to pass values to the offset clause.
I have an Oracle Forms 6i form with a data block that consists of several columns.
------------------------------------------------------------------------------
| FIRST_NAME | LAST_NAME | DEPARTMENT | BIRTH_DATE | JOIN_DATE | RETIRE_DATE |
------------------------------------------------------------------------------
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
------------------------------------------------------------------------------
The user can press F7 (to Enter in Query Mode, for example, he/she types JOH% in the first_name and H% in the DEPARTMENT field) , then F8 to execute the query and see the results. In this example, a list of all employees with their last name starting with JOH and working in any department starting with H will be listed. Here is a sample output of that query
------------------------------------------------------------------------------
| FIRST_NAME | LAST_NAME | DEPARTMENT | BIRTH_DATE | JOIN_DATE | RETIRE_DATE |
------------------------------------------------------------------------------
| MIKE | JOHN | HUMAN RES. | 05-MAY-82 | 02-FEB-95 | |
| BEN | JOHNATHAN | HOUSING | 23-APR-76 | 16-AUG-98 | |
| SMITH | JOHN | HOUSING | 11-DEC-78 | 30-JUL-91 | |
| | | | | | |
------------------------------------------------------------------------------
I then added a small button on top of each column to allow the user to sort the data by the desired column, by executing WHEN-BUTTON-PRESSED trigger:
set_block_property('dept', order_by, 'first_name desc');
The good news is that the ORDER_BY does change. The bad news is that the user never notice the change because he/she will need to do another query and execute to see the output ordered by the column they selected. In other words, user will only notice the change in the next query he/she will execute.
I tried to automatically execute the query upon changing the ORDER_BY clause like this:
set_block_property('dept', order_by, 'first_name desc');
go_block('EMPLOYEE');
do_key('EXECUTE_QUERY');
/* EXECUTE_QUERY -- same thing */
but what happens is that all data from the table is selected, ignoring the criteria that the user has initially set during the query mode entry.
I also searched for a solution to this problem and most of them deal with SYSTEM.LAST_QUERY and default_where. The problem is, last_query can refer to a different block from a different form, that is not valid on the currently displayed data bloc.
How can do the following in just one button press:
1- Change the ORDER_BY clause of the currently active datablock
and: 2- Execute the last query that the user has executed, using the same criteria that was set?
Any help will be highly appreciated.
You can get the last query of the block with get_block_property built-in function:
GET_BLOCK_PROPERTY('EMPLOYEE', LAST_QUERY);
Another option is to provide separate search field(s) on the form, instead of using the QBE functionality.
I am starting to try some experiments using Google SpreadSheets as a DB and for that I am collecting data from different sources and inserting them via spreadsheets API into a sheet.
Each row has a value (Column B) and a timestamp (Column A).
+---------------------+------+
| ColA | ColB |
+---------------------+------+
| 13/10/2012 00:19:01 | 42 |
| 19/10/2012 00:29:01 | 100 |
| 21/10/2012 00:39:01 | 23 |
| 22/10/2012 00:29:01 | 1 |
| 23/10/2012 00:19:01 | 24 |
| 24/10/2012 00:19:01 | 4 |
| 31/10/2012 00:19:01 | 2 |
+---------------------+------+
What I am trying to do is to programmatically add the sum of all rows in Column B where Column A is equal to the current month into a different cell.
Is there any function that I can use for that? Or anyone can point me to the right direction on how can I create a custom function which might do something like this? I know how to do this using MySQL but I couldn't find anything for Google SpreadSheets
Thanks in advance for any tip in the right direction.
Would native spreadsheet functions do?
=ArrayFormula(SUMIF(TEXT(A:A;"MM/yyyy");TEXT(GoogleClock();"MM/yyyy");B:B))