[jira] Updated: (DERBY-4883) Create a table function which turns an html table into a dbms table

["Rick Hillegas (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DERBY-4883?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rick Hillegas updated DERBY-4883:
---------------------------------

    Attachment: z.sql
                FirstVersion.java
                HtmlTableVTI.java

Attaching a couple files:

1) HtmlTableVTI.java - This is a table function which reads an html file and makes a ResultSet out of the last html table which it finds in the file.

2) FirstVersion.java - This is a function which takes a string of Derby version ids and extracts the earliest version id. Technically, this has nothing to do with this JIRA, but it's part of the test case which I put together to debug this.

3) regressionReport.html - Again, not technically part of this JIRA. This is an html report produced from the "Derby regressions" filter by selecting the "Excel(current field)" view. I had to scrub the report a bit to get it to pass the xml parser used by HtmlTableVTI.

4) z.sql - This is a script which declares the above  functions and runs them against the regression report to produce a list of previous releases and the number of regressions they caused.

Here is the output from running the final query in the script:

ij> select a, count( a ) b
from ( select firstVersion( col11 ) a from regressions where firstVersion( col11 ) is not null ) t
group by a
order by b;
A                   |B          
--------------------------------
10.7.1.0            |1          
10.5.3.1            |1          
10.5.2.0            |1          
10.3.3.1            |1          
10.1.3.3            |1          
10.1.1.0            |1          
10.0.2.0            |1          
10.4.2.1            |2          
10.1.3.2            |2          
10.1.2.1            |2          
10.2.2.1            |3          
10.6.1.0            |4          
10.5.3.0            |6          
10.4.2.0            |8          
10.3.3.0            |8          
10.3.2.1            |8          
10.2.2.0            |8          
10.1.3.1            |9          
10.5.1.1            |12         
10.4.1.3            |13         
10.2.1.6            |33         
10.3.1.4            |53         

22 rows selected


> Create a table function which turns an html table into a dbms table
> -------------------------------------------------------------------
>
>                 Key: DERBY-4883
>                 URL: https://issues.apache.org/jira/browse/DERBY-4883
>             Project: Derby
>          Issue Type: Improvement
>          Components: Demos/Scripts
>            Reporter: Rick Hillegas
>         Attachments: FirstVersion.java, HtmlTableVTI.java, regressionReport.html, z.sql
>
>
> This could be a generally useful tool to have in one's kit.

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