[Kmymoney-devel] Review Request 122138: [GCI2014] Find the maximum in a set of numeric strings.

[Christian David]

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kmymoney/mymoney/storage/mymoneystoragesql.cpp
<https://git.reviewboard.kde.org/r/122138/#comment51570>

    Sqlite interprets ```SUBSTR(...)``` as string. So max does not work as expected. I think ```cast(substr(...) as integer)``` should fix that.
    
    Also it seems like it is not possible to use a bound value in ```FROM``` so tableName must me appended to the string directly :(.


Well done, this task was difficult! Your code — C++ and SQL — looks very fine.

For all developers: Currently I am writing a test. Then we can replace nearly all ```getRecCount()``` calls with this function and many issues are gone :)

- Christian David


On Jan. 19, 2015, 6:02 vorm., Daniel Ring wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/122138/
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> (Updated Jan. 19, 2015, 6:02 vorm.)
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> 
> Review request for KMymoney and Christian David.
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> Bugs: 339103
>     http://bugs.kde.org/show_bug.cgi?id=339103
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> Repository: kmymoney
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> Description
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> This adds a function to retrieve the highest ID number from the database. The IDs are prefixed by a short identifier string, and are stored in the database as strings.
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> This review request was created as a part of Google Code-In 2014. The specific task it refers to can be found here: https://www.google-melange.com/gci/task/view/google/gci2014/5774859095244800
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> 
> Diffs
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>   kmymoney/mymoney/storage/mymoneystoragesql.h 469c0f47d61df783f48787660f526fccdf5264a4 
>   kmymoney/mymoney/storage/mymoneystoragesql.cpp fa9fbdf7d77eaa4922302d1f583317212af45ddf 
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> Diff: https://git.reviewboard.kde.org/r/122138/diff/
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> Testing
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> I created a small sample database with SQLite and verified that the SQL statment worked properly. I was able to successfully build and run KMyMoney with this function included in Debian Stable (using cmake 2.8.11.1 from backports). However, I was unsure how best to test the function itself, so please let me know if any issues arise.
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> Thanks,
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> Daniel Ring
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>

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