This is the first step toward adding an optimization that will omit tables
from a join that do not contribute to the result.
FossilOrigin-Name: 2c2577e69ccb47f1af674a755e71221e2ca0b322
sqliteInt.h and into where.c. This will facilitate future refactoring
of the internal query planner data structures.
FossilOrigin-Name: 1574653b9b4522b489d4c62d9cf70166bb3bddfd
This check-in compiles but does not work. The test suite gets incorrect
answers and crashes.
FossilOrigin-Name: 001539df4b74dc1cbceb010a91407003ab4d8735
on the compiler command-line, except keep SQLITE_THREADSAFE around so that
there is always at least one compilation option.
FossilOrigin-Name: 109d6767d2626741db1d15ed55e699ac3184a536
instead of "mmap_limit". Also change SQLITE_CONFIG_MMAP_LIMIT and
SQLITE_FCNTL_MMAP_LIMIT to SQLITE_CONFIG_MMAP_SIZE and
SQLITE_FCNTL_MMAP_SIZE, respecctively.
The default mmap_size is now always 0, meaning that
memory mapped I/O is off by default. There is a new compile-time option
SQLITE_MAX_MMAP_SIZE that determines a hard upper bound on the mmap_size.
Setting SQLITE_MAX_MMAP_SIZE to zero disables the memory-mapped I/O logic
and causes it to be omitted from the build. An extra argument is added
to SQLITE_CONFIG_MMAP_SIZE that can optionally lower the SQLITE_MAX_MMAP_SIZE
at start-time. The SQLITE_MAX_MMAP_SIZE is zero for platforms where we
know that it does not work, meaning that it cannot be turned on by mistake
on those platforms.
FossilOrigin-Name: ea1404a10abd7f68e1f8e0708c8a3199d1f79665
identifiers in the WHERE clause if there are no other matches. In the
ORDER BY clause, AS names take priority over any column names.
Candidate fix for ticket [2500cdb9be].
FossilOrigin-Name: ad53924dcadffb95c6497c46c228c67e8f5370e4
defined. Automatically define this macro for OpenBSD and QNX. Other
systems are likely to be added to the disabled list over time.
FossilOrigin-Name: 8a4314a398c6c6efb25e6993c826b7e60d9bb1f9
SQLITE_DEFAULT_MMAP_LIMIT compile-time setting. Enhance "PRAGMA mmap_limit"
so that without a specific database name, it sets the limit on all database
files and changes the default for any future databases that might be added
using ATTACH.
FossilOrigin-Name: 78141d0a16dd1d56b575fccd149de7fa789cb06c
used to issue a hint to the VFS to limit mmap space to N bytes. The VFS
is free to ignore that hint if desired. However, if "PRAGMA mmap_limit(0)"
is used, xFetch is never called.
FossilOrigin-Name: 1b37c4effdd03aa2ea938a71b4f22ed27391689b
vdbe_listing, and vdbe_trace pragmas. PRAGMA vdbe_debug enables tracing of
sqlite3VdbeAddOp() calls. None of this is active unless compiled with
SQLITE_DEBUG.
FossilOrigin-Name: ae565ff3e0836b0cb45cc0ba7f27fa8cb2d21d77
itself inside parentheses. Generate code as if the parentheses did not
exist, rather than the old behavior of manifesting the parenthesized table
into a transient table. Also, tag every FROM-clause SELECT subquery that is
generated by a parenthesized FROM-clause expression using the SF_NestedFrom
flag. The new SF_NestedFrom flag is not yet used for anything.
FossilOrigin-Name: 7fecced466d86a66b0b751c5b5608141e134fe2d
