For DELETE operations, make sure that seeks on the main table are not

deferred, since if they are and none of the indexes reference columns of
the table, the seek might never occur until the OP_Delete opcode, which is
too late.  Fix for ticket [16c9801ceba49].

FossilOrigin-Name: 93a2bace5704f7ecad56541a6b3e06a88f7f393f

diff --cc manifest
index 0525e61f73f864ba0b6bfb6ec893347ae91cca2b,459b5d372731e3af83ff6efeed5be4e3a2e989bc..6fd1d2d4023eedfea5bea28edf7dc53bedd81801
--- 1/manifest
--- 2/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Fix\san\serror\sin\smain.mk\scausing\stestfixture\sto\suse\sindividual\sfts5\ssource\scode\sfiles\sinstead\sof\sfts5.c.
- D 2016-05-06T16:30:34.529
 -C In\sthe\sWHERE\sgenerator,\swhen\sbuilding\scode\sfor\sa\sDELETE\soperation,\smake\ssure\nthat\sseeks\sto\sthe\smain\stable\sare\snot\sdeferred.\nThis\sis\sa\sbetter\sfix\sfor\sthe\s[16c9801ceba49]\sbug\sthan\sthe\sprevious.
 -D 2016-05-06T16:06:59.602
++C For\sDELETE\soperations,\smake\ssure\sthat\sseeks\son\sthe\smain\stable\sare\snot\ndeferred,\ssince\sif\sthey\sare\sand\snone\sof\sthe\sindexes\sreference\scolumns\sof\nthe\stable,\sthe\sseek\smight\snever\soccur\suntil\sthe\sOP_Delete\sopcode,\swhich\sis\ntoo\slate.\s\sFix\sfor\sticket\s[16c9801ceba49].
++D 2016-05-06T16:49:54.299
  F Makefile.in 9eda6e1c90d05c199c3ec8a7069b0682ad307657
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
  F Makefile.msc db82b35aef27f412fef14d8534afc022138bcdfd
@@@ -382,7 -382,7 +382,7 @@@ F src/shell.c 14ff7f660530a52b117d110ba
  F src/sqlite.h.in 9984129d86243424b765fcb3f147c697bd20bb54
  F src/sqlite3.rc 5121c9e10c3964d5755191c80dd1180c122fc3a8
  F src/sqlite3ext.h 98f72cbfe00169c39089115427d06ea05fe4b4a2
- F src/sqliteInt.h c8483dd77894a72d38a76b6251a4ac949a37d6e8
 -F src/sqliteInt.h 4ab5884aa7dd1cfbb1a34f60d8a919f6584c4aa1
++F src/sqliteInt.h 8ec741711b8f42aae2c7a22e3d04f15270e0b6be
  F src/sqliteLimit.h c0373387c287c8d0932510b5547ecde31b5da247
  F src/status.c 70912d7be68e9e2dbc4010c93d344af61d4c59ba
  F src/table.c 5226df15ab9179b9ed558d89575ea0ce37b03fc9
@@@ -1487,7 -1487,7 +1487,8 @@@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a9
  F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
  F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
  F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
- P dc37750d4e87d0c529785adceeebd838b8f8591d
- R c15766ea1c9925837a701d30f137e7d3
- U dan
- Z ee202f54aac91dd67f57f6a979bc066b
 -P 50312273ffaf1bd4bfdc73865fa0b19166968429
 -R 0aaabe1d44ff452855f4b1d0d09524f8
++P 933a1c818c1d1ccec8680e1ba87f2cbe37cc9f7d 150dd09ebd7b17234a79e1811a0fae8b0a7a40d5
++R 999c47253628cf8504ca9429ccbba492
++T +closed 150dd09ebd7b17234a79e1811a0fae8b0a7a40d5
+ U drh
 -Z 9200ae75c074ea360e36df5da26c6a08
++Z 0a4c84a453e835d42d347d7d3d2d52db

diff --cc manifest.uuid
index e0a918072d9f51b6b193dfb6bcf5ea1138b59102,709cd8f436511702caea211933abd2d03066bb80..f2214b4f51450a46309f1281a0fc7e627cf247ba
--- 1/manifest.uuid
--- 2/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 933a1c818c1d1ccec8680e1ba87f2cbe37cc9f7d
 -150dd09ebd7b17234a79e1811a0fae8b0a7a40d5
++93a2bace5704f7ecad56541a6b3e06a88f7f393f

diff --cc src/sqliteInt.h
index 783f0f56c3edd0000ce6e39136ff1b47fb7d1eb9,de06f6d7d8921fd85ac7c8ea1148e746405fac4e..f9635a4eb0a52a4751fb49670f45b1713a4598ec
--- 1/src/sqliteInt.h
--- 2/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@@ -2543,6 -2543,7 +2543,7 @@@ struct SrcList 
  #define WHERE_REOPEN_IDX       0x1000 /* Try to use OP_ReopenIdx */
  #define WHERE_ONEPASS_MULTIROW 0x2000 /* ONEPASS is ok with multiple rows */
  #define WHERE_USE_LIMIT        0x4000 /* There is a constant LIMIT clause */
 -#define WHERE_SEEK_TABLE       0x8000 /* Always seek the main table */
++#define WHERE_SEEK_TABLE       0x8000 /* Do not defer seeks on main table */
  
  /* Allowed return values from sqlite3WhereIsDistinct()
  */