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12 check-ins using file src/btree.c version 086fdb4505

2009-02-23
17:33
Scan an index instead of a table for "SELECT count(*) FROM <tbl>" queries. Because an index is usually smaller than a table on disk, this saves some IO. (CVS 6315) (check-in: 294ba6f743 user: danielk1977 tags: trunk)
16:52
Add the reverse_unordered_selects pragma. (CVS 6314) (check-in: bc078e0007 user: drh tags: trunk)
14:42
Ensure the return value of sqlite3_errmsg16() is aligned on a 2-byte boundary. Ticket #3665. (CVS 6313) (check-in: 9b8acf8319 user: danielk1977 tags: trunk)
2009-02-21
22:38
The sqlite3.def file is automatically generated and is not suppose to be part of the source code repository. So it is hereby removed. Ticket #3671. (CVS 6312) (check-in: 5dcda15409 user: drh tags: trunk)
2009-02-20
22:27
unbreak Autoconf-based build procedure by added missing backup.lo to the list of library objects (CVS 6311) (check-in: 9494580197 user: rse tags: trunk)
10:58
Instead of using SetNumColumns, specify the number of columns in a table or index using the P4 argument. (CVS 6310) (check-in: e43ed64963 user: danielk1977 tags: trunk)
03:55
Add a count parameter to the OP_Variable opcode and use it to simplify prepared statements that copy consecutive unnamed parameters into consecutive registers (a common case). (CVS 6309) (check-in: 48b77b0493 user: drh tags: trunk)
03:02
Add the OP_HaltIfNull opcode and use it to simplify prepared statements for INSERTs and UPDATEs of tables with NOT NULL columns. (CVS 6308) (check-in: feccad8d0d user: drh tags: trunk)
01:28
Reuse space left-over opcode space at the end of the VDBE opcode array to store memory cells, VDBE cursors, and other content needed by the VDBE. This reduces the memory required by a prepared statement. (CVS 6307) (check-in: 58a1809257 user: drh tags: trunk)
2009-02-19
20:50
Remove code in malloc.c that was already commented out using #if 0. (CVS 6306) (check-in: e1ad757ec0 user: drh tags: trunk)
14:39
Changes to reduce the heap space consumed by triggers, views and tables in the in-memory representation of the schema. Also to reduce the space used by prepared statements slightly. (CVS 6305) (check-in: d9f6ffbc5e user: danielk1977 tags: trunk)
2009-02-18
20:31
Make sure the auto_vacuum=INCREMENTAL setting is preserved across a VACUUM. Ticket #3663. (CVS 6304) (check-in: ded04f12f4 user: drh tags: trunk)