function if compiled with -DSQLITE_ENABLE_OFFSET_SQL_FUNC. The makefiles add
that definition to shell builds.
FossilOrigin-Name: 7a7f826e324b1a2c332e2f1d0740fd0babffcaca6275a798572f02ad367b99ab
location of the payload within the database for the record that contains
column X. location(X) returns NULL if X is not an ordinary table column or
if SQLite cannot figure out the location because it is using a covering index.
FossilOrigin-Name: 51be9558164301c5dd4df23ab8b3e67de0b522f8d36f79f3d84d45d3dc2a83a4
SQLITE_DONE if they have already reached the end (or beginning) of the table.
This gives a performance increase and size reduction.
FossilOrigin-Name: e972a3860892022d57b26ec44ce0fbadc61c1ff54b7a10b7e82390db88d323a7
into sqlite3BtreePayload() and sqlite3BtreePayloadChecked(), respectively.
This is a continuation of the optimization started by check-in
[2d831074cf]. The result is a slightly smaller and faster binary.
FossilOrigin-Name: 49ebc219faea30eaa61def4a3fba2817b9c58a86
make it only work for table btrees. Change sqlite3BtreeDataSize() into
sqlite3BtreePayloadSize() and make it work for all btrees. Combine
sqlite3BtreeDataFetch() and sqlite3BtreeKeyFetch() into a single
sqlite3BtreePayloadFetch() routine. These changes seem to make the
b-tree interface more rational and they reduce both binary size and
CPU usage.
FossilOrigin-Name: bef35e18dd19732f7859287b097feeb593e5900f
describing the content to be inserted into the new BtreePayload structure, and
thus reducing the number of parameters from eight to four.
FossilOrigin-Name: 55f348cdd24c7812ea4b63345514764b69f64dc8
BTREE_IDXDELETE bit indicates that the call is to delete an index entry
corresponding to a table row that has already been deleted.
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byte requests in calls to sqlite3BtreeSetPageSize()) and then change the
reserve byte count to the optimal when doing a VACUUM or when using the
backup API.
FossilOrigin-Name: 28c2b726285ea88b334acfd6390a057d2d244838
into two with the second routine named sqlite3BtreeCursorRestore(). The first
now only reports whether or not the cursor has moved and the second tries to
restore the cursor. This allows the sqlite3VdbeCursorMoveto() routine to be
refactored to avoid stack pointer movements, for a noticable performance gain.
FossilOrigin-Name: ce123b5c592556a8cd38b01fcc91ba76231d3098
table and thereby speed up OP_NewRowid. That cache was ineffective.
Removing it results in a performance increase of 0.4%, less memory usage,
and a slightly smaller library size.
FossilOrigin-Name: 56bc5ce8958c8e6250531b4052b905d7ac993db3
sqlite3BtreeCursorHint() interface to provide hints to the storage engine
about rows that need not be returned. Hints can be disabled using
SQLITE_TESTCTRL_OPTIMIZATIONS with SQLITE_CursorHints (0x2000). Cursor
hints are not used by the built-in storage engine of SQLite but might
be useful to applications that provide their own storage engine. The
current code is work-in-progrss and contains bugs.
FossilOrigin-Name: 3a9bec524ef2de44028b4058e67dc962082888d3
the "PRAGMA application_id" command to set and query this identifier.
Add the "magic.txt" file to show how the posix file command might use
this application id.
FossilOrigin-Name: 28c9e7fdee2471a3026ee05ff591194d5f398131
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
