Review Request 118519: Fix crash when accessing a query with duplicated table names

[Jarosław Staniek]

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https://git.reviewboard.kde.org/r/118519/
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Review request for Calligra, Andrius da Costa Ribas, Oleg Kukharchuk, Adam Pigg, Dimitrios Tanis, Tomasz Olszak, Radosław Wicik, and Wojciech Kosowicz.


Bugs: 315852
    http://bugs.kde.org/show_bug.cgi?id=315852


Repository: calligra


Description
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Fix crash when accessing a query with duplicated table names

Example query that crashed: SELECT t.foo FROM t, t.
Now error message is displayed so user can fix the statement.

FIXED-IN:2.8.4


Diffs
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  libs/db/expression.cpp c59855e1e9e4b972352b58b2037c9187a251ed8f 

Diff: https://git.reviewboard.kde.org/r/118519/diff/


Testing
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No longer crashes for tested queries, we're no longer using dangerous function at() in this context


Thanks,

Jarosław Staniek

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