Merge 'trunk' into 'mssql_top_fixes'

Merge 'trunk' into 'mssql_top_fixes'

r6875@Thesaurus (orig r6874):  ribasushi | 2009-06-30 12:39:06 +0200
Allow broken resultsource-class-derived objects to still work
r6876@Thesaurus (orig r6875):  ribasushi | 2009-06-30 12:40:46 +0200
clarify
r6878@Thesaurus (orig r6877):  ash | 2009-06-30 13:48:13 +0200
Update POD on Dynamic sub-classing

r6883@Thesaurus (orig r6882):  ribasushi | 2009-06-30 17:36:38 +0200
 r6815@Thesaurus (orig r6814):  ribasushi | 2009-06-28 10:32:42 +0200
 Branch to explore double joins on search_related
 r6816@Thesaurus (orig r6815):  ribasushi | 2009-06-28 10:34:16 +0200
 Thetest case that started it all
 r6817@Thesaurus (orig r6816):  ribasushi | 2009-06-28 10:35:11 +0200
 The proposed fix (do not add an extra join if it is already present in the topmost join)
 r6818@Thesaurus (orig r6817):  ribasushi | 2009-06-28 11:04:26 +0200
 Minor omission
 r6819@Thesaurus (orig r6818):  ribasushi | 2009-06-28 11:07:33 +0200
 Adjust a couple of tests for new behavior (thus all of this might be backwards incompatible to the point of being useless):
 The counts in t/90join_torture.t are now 5*3, not 5*3*3, as a second join is not induced by search_related
 The raw sql scan in t/prefetch/standard.t is just silly, won't even try to understand it
 Just to maintain the TreeLike folding, I add a 3rd children join which was inserted by search_related before the code changes

r6889@Thesaurus (orig r6888):  ribasushi | 2009-06-30 19:36:11 +0200
Todoify test for now
r6890@Thesaurus (orig r6889):  ribasushi | 2009-06-30 19:37:05 +0200
Todoify test for now (2)
r6892@Thesaurus (orig r6891):  ribasushi | 2009-06-30 19:52:31 +0200
Todoify test for now (3)
r6903@Thesaurus (orig r6902):  ribasushi | 2009-07-01 08:46:12 +0200
Fixed deadlock test
r6904@Thesaurus (orig r6903):  ribasushi | 2009-07-01 12:22:00 +0200
Clarify exception text
r6907@Thesaurus (orig r6906):  ribasushi | 2009-07-01 13:23:46 +0200
 r6821@Thesaurus (orig r6820):  ribasushi | 2009-06-28 13:09:11 +0200
 Branch for prefetch+group play
 r6823@Thesaurus (orig r6822):  ribasushi | 2009-06-28 14:38:36 +0200
 Normalize group_by
 r6824@Thesaurus (orig r6823):  ribasushi | 2009-06-28 14:39:54 +0200
 Proper prefetch+group test
 r6826@Thesaurus (orig r6825):  ribasushi | 2009-06-28 14:42:48 +0200
 Whoops
 r6828@Thesaurus (orig r6827):  ribasushi | 2009-06-28 15:06:57 +0200
 Lose the literal sql bits - castaway is right it's silly to support those
 r6833@Thesaurus (orig r6832):  ribasushi | 2009-06-28 22:38:43 +0200
 Rogue comments
 r6837@Thesaurus (orig r6836):  ribasushi | 2009-06-29 09:44:25 +0200
 A couple of test fixes
 r6838@Thesaurus (orig r6837):  ribasushi | 2009-06-29 09:46:13 +0200
 Support for -select/-as in SQLAHacks field selection
 r6839@Thesaurus (orig r6838):  ribasushi | 2009-06-29 09:49:53 +0200
 This is tested elsewhere
 r6840@Thesaurus (orig r6839):  ribasushi | 2009-06-29 09:50:43 +0200
 This is tested elsewhere (2)
 r6841@Thesaurus (orig r6840):  ribasushi | 2009-06-29 10:07:09 +0200
 Test cleanups
 r6842@Thesaurus (orig r6841):  ribasushi | 2009-06-29 10:11:13 +0200
 Most of the grouped prefetch solution
 r6843@Thesaurus (orig r6842):  ribasushi | 2009-06-29 10:14:45 +0200
 clearer
 r6845@Thesaurus (orig r6844):  ribasushi | 2009-06-29 12:05:37 +0200
 And score! (all works)
 r6882@Thesaurus (orig r6881):  ribasushi | 2009-06-30 16:23:06 +0200
 rs->get_column now properly recognizes prefetch and collapses if at all possible
 r6886@Thesaurus (orig r6885):  ribasushi | 2009-06-30 17:39:58 +0200
 Whoops

r6910@Thesaurus (orig r6909):  ribasushi | 2009-07-01 13:27:15 +0200
Optimize set_column on uninserted objects
r6921@Thesaurus (orig r6920):  caelum | 2009-07-01 17:40:32 +0200
 r5859@hlagh (orig r6912):  caelum | 2009-07-01 06:21:30 -0700
 new connected() for dbd::sybase users
 r5860@hlagh (orig r6913):  caelum | 2009-07-01 06:25:46 -0700
 add a couple of dbd::sybase reconnection tests
 r5861@hlagh (orig r6914):  caelum | 2009-07-01 06:35:07 -0700
 better connection test
 r5862@hlagh (orig r6915):  caelum | 2009-07-01 06:45:05 -0700
 use dbh->do for connected instead of prepare_cached
 r5863@hlagh (orig r6916):  ribasushi | 2009-07-01 06:55:21 -0700
 Segfault
 r5864@hlagh (orig r6917):  caelum | 2009-07-01 07:03:22 -0700
 use ->do instead of ->prepare_cached in oracle's connected() too
 r5865@hlagh (orig r6918):  caelum | 2009-07-01 08:20:52 -0700
 fix segfault with old DBD::Sybase
 r5866@hlagh (orig r6919):  caelum | 2009-07-01 08:39:18 -0700
 move connection tests into _ping()

r6924@Thesaurus (orig r6923):  ijw | 2009-07-01 19:34:32 +0200
Added a test for a resultset to related-resultset join for 0 related records
r6928@Thesaurus (orig r6927):  ijw | 2009-07-01 20:04:16 +0200
Additional tests on prefetch - illustrates the bug with left-join has_many (NULL row returned) and the one that results from the trivial fix (prefetch gives no artist)