Improved optimizations of views as the right operand of a LEFT JOIN.

FossilOrigin-Name: 41c27bc0ff1d3135cdb6273ede4595f5bb0c0e1e1d470ea1633cb525674cf431

diff --cc manifest
index a1cf5d40b58ccb406a06aa2780cd2a8664b01a94,155f797a319f4d45c1dc2311b789d74fb4b24e95..89c0690ce5245fd9b5949a42c6214237f28edc3e
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Refactor\sthe\sfts3ColumnMethod()\sfunction\sso\sthat\sall\sbranches\scan\sbe\scovered.
- D 2017-04-18T05:49:23.863
 -C Add\sthe\sTK_IF_NULL_ROW\sopcode\sto\sdeal\swith\snon-NULL\sresult\scolumns\sin\sthe\nresult\sset\sof\sa\sview\sor\ssubquery\son\sthe\sRHS\sof\sa\sLEFT\sJOIN\sthat\sgets\sflattened.
 -D 2017-04-14T19:03:10.224
++C Improved\soptimizations\sof\sviews\sas\sthe\sright\soperand\sof\sa\sLEFT\sJOIN.
++D 2017-04-18T11:20:19.836
  F Makefile.in 1cc758ce3374a32425e4d130c2fe7b026b20de5b8843243de75f087c0a2661fb
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
  F Makefile.msc 6a8c838220f7c00820e1fc0ac1bccaaa8e5676067e1dbfa1bafa7a4ffecf8ae6
@@@ -402,8 -401,8 +402,8 @@@ F src/printf.c 8757834f1b54dae512fb25eb
  F src/random.c 80f5d666f23feb3e6665a6ce04c7197212a88384
  F src/resolve.c 3e518b962d932a997fae373366880fc028c75706
  F src/rowset.c 7b7e7e479212e65b723bf40128c7b36dc5afdfac
- F src/select.c 4588dcfb0fa430012247a209ba08e17904dd32ec7690e9cb6c85e0ef012b0518
+ F src/select.c bf8ab605e49717c222136380453cfb7eda564f8e500d5ff6a01341ea59fefe80
 -F src/shell.c 70f4957b988572315e97c56941fdc81fd35907fee36b7b2e7be5ec4c7e9d065d
 +F src/shell.c 21b79c0e1b93f8e35fd7b4087d6ba438326c3d7e285d0dd51dfd741475f858a1
  F src/sqlite.h.in 40233103e3e4e10f8a63523498d0259d232e42aba478e2d3fb914799185aced6
  F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
  F src/sqlite3ext.h 58fd0676d3111d02e62e5a35992a7d3da5d3f88753acc174f2d37b774fbbdd28
@@@ -469,7 -468,7 +469,7 @@@ F src/update.c c443935c652af9365e033f75
  F src/utf.c 699001c79f28e48e9bcdf8a463da029ea660540c
  F src/util.c ca8440ede81e155d15cff7c101654f60b55a9ae6
  F src/vacuum.c 1fe4555cd8c9b263afb85b5b4ee3a4a4181ad569
- F src/vdbe.c 11604e6c5d350a2c3b820130246c894de5a97d675a16f9825e88839fb9282eb3
 -F src/vdbe.c ef0fd44a2b4f70e006d050a98c6f563e19293d683975a95287668340764f99f1
++F src/vdbe.c 1eba07ffa0e4ff5e14ceca17e366c26f58c11d12cc56e55a9a13157a93533b7e
  F src/vdbe.h f7d1456e28875c2dcb964056589b5b7149ab7edf39edeca801596a39bb3d3848
  F src/vdbeInt.h c070bc5c8b913bda0ceaa995cd4d939ded5e4fc96cf7c3c1c602d41b871f8ade
  F src/vdbeapi.c 5b08d82592bcff4470601fe78aaabebd50837860
@@@ -483,8 -482,8 +483,8 @@@ F src/vxworks.h d2988f4e5a61a4dfe82c652
  F src/wal.c 40c543f0a2195d1b0dc88ef12142bea690009344
  F src/wal.h 06b2a0b599cc0f53ea97f497cf8c6b758c999f71
  F src/walker.c b71a992b413b3a022572eccf29ef4b4890223791
- F src/where.c 10ae856aa4bcf7c6be39b6b53422fc94e713ab8a19383b4cf525bc05ae70d872
 -F src/where.c e02cbd8a830d36e48b1640d0c7b49526322e35fa800c729c17c5d63712a01275
 -F src/whereInt.h 7a21ef633e26acbf46df04add2eba6e0a2100c78dc5879049e93f981fc3344df
++F src/where.c c6352f15be5031907c68bcbde96cad1a6da20e9f4051d10168a59235de9a8566
 +F src/whereInt.h 2a4b634d63ce488b46d4b0da8f2eaa8f9aeab202bc25ef76f007de5e3fba1f20
  F src/wherecode.c 943e32e9dccd0af802e0683ae11071c8bd808364e5908a5fb66758bd404c8681
  F src/whereexpr.c e913aaa7b73ffcce66abcea5f197e2c538d48b5df78d0b7bba8ff4d73cc2e745
  F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
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+ U drh
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diff --cc manifest.uuid
index f16a0ec83353eff485d430eacf30a8ec4d9f08db,bf413e2eb0b68d82e5a1ba2675d626b302628846..560bf633fe472ca8eb9211b239a6e6083a6318d3
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- e47fdb493bd76d85f6f05771ee7a0b3ee31b1eb05839a60d2bdb47149ac692d8
 -3a5860d86fadcf924316707918bf283d26c53b1473e5e67f5cff59d18c2a7742
++41c27bc0ff1d3135cdb6273ede4595f5bb0c0e1e1d470ea1633cb525674cf431

diff --cc src/vdbe.c
Simple merge

diff --cc src/where.c
Simple merge