D12873: Fix handling ORDER BY part of queries

[Jarosław Staniek]

staniek created this revision.
staniek added a reviewer: piggz.
Restricted Application added a project: KDb.
staniek requested review of this revision.

REVISION SUMMARY
  - maintain relations between connections, queries and column infos
  - fix cloning queries with ORDER BY
  - update and add autotests
  
  FIXED-IN:3.2
  BUG:392753
  CCBUG:393705

TEST PLAN
  Test 1: Open report and query from https://bugs.kde.org/show_bug.cgi?id=392753#c0 in design and data views.
  Expected: works, no crashes
  
  Test 2: Try these on a standard Persons and Cars test:
  select id from cars order by owner;
  select id from cars order by owner, model, id;
  select id, model from cars order by 2, 1;
  
  Expected: works, no crash

REPOSITORY
  R15 KDb

BRANCH
  392753

REVISION DETAIL
  https://phabricator.kde.org/D12873

AFFECTED FILES
  autotests/CMakeLists.txt
  autotests/OrderByColumnTest.cpp
  autotests/OrderByColumnTest.h
  src/KDbNativeStatementBuilder.cpp
  src/KDbOrderByColumn.cpp
  src/KDbOrderByColumn.h
  src/KDbQueryColumnInfo.cpp
  src/KDbQueryColumnInfo.h
  src/KDbQuerySchema.cpp
  src/KDbQuerySchema_p.h

To: staniek, piggz
Cc: Kexi-Devel-list, barman, wicik, staniek
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