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serializable-snapshot
Commit Graph

11785 Commits

Author SHA1 Message Date
drh
4b4ffadb43 Merge bug fixes and enhancements from trunk. 
FossilOrigin-Name: e2c4bdf54fc1b9605226c7d6c79ef4f8302d6213
 2016-11-22 22:23:56 +00:00
drh
bc88711d08 Enclose the sqlite3WalSnapshotRecover() routine within 
FossilOrigin-Name: e7be3183eb25e0f9f04b9e251ff37fa5e50cc1a7
 2016-11-22 21:11:59 +00:00
drh
65f38d960d Remove unnecessary OP_Close opcodes for a size reduction and performance 
increase.

FossilOrigin-Name: 32be7aae92ee48bf2cd260ea41e79c2bc62738f9
 2016-11-22 01:26:42 +00:00
drh
60ffc80756 Remove unnecessary OP_Close opcodes at the end of INSERT operations, resulting 
in smaller and faster code.

FossilOrigin-Name: abeddb6d5a4040e1d0a87a4f32ad79794ba0842b
 2016-11-21 21:33:46 +00:00
drh
c10b9dac84 Fix harmless compiler warnings. 
FossilOrigin-Name: b3b7b42d9a4a0e7e2be8b2933328a7bec2f49a81
 2016-11-20 17:59:59 +00:00
drh
0f85b2ff09 Prevent a possible use-after-free bug in the query optimizer. 
FossilOrigin-Name: 0a98c8d76ac86412d5eb68de994658c250989349
 2016-11-20 12:00:27 +00:00
dan
93f5113290 Remove the requirement to open the wal file before sqlite3_snapshot_recover() 
is called. Also add some comments to new functions.

FossilOrigin-Name: 28393c413cc4505b94411730e728583c5d4baaae
 2016-11-19 18:31:37 +00:00
dan
6a9e7f16eb Fix a problem causing sqlite3_snapshot_recover() to return 
SQLITE_IOERR_SHORT_READ.

FossilOrigin-Name: 525f75fa9fd4a95acc3fb3b0a01dabe2be39b383
 2016-11-19 16:35:53 +00:00
dan
5b4009f637 Fix a bug in sqlite3_snapshot_recover() that could cause subsequent read 
transactions to use out-of-data cache entries.

FossilOrigin-Name: 9abeb7980a34cec11a3420e14ad98a4ec0d9c599
 2016-11-19 14:53:22 +00:00
dan
1158498dce Add experimental sqlite3_snapshot_recover() API. 
FossilOrigin-Name: 174a6076a8d7bebe5efebf55f3fdc5d87c589cc7
 2016-11-18 20:49:43 +00:00
dan
edace5d4f1 Require that the database handle be in autocommit mode for 
sqlite3_snapshot_get() to succeed. This is because it may open a read
transaction on the database file.

FossilOrigin-Name: 83b658dad091211ade3594d1e8d00ce525882506
 2016-11-18 18:43:39 +00:00
dan
25accbca72 Enhance existing snapshot tests to serialize/deserialize snapshots. No new 
tests.

FossilOrigin-Name: 16b9bf92741e4c62874cffd7c6a61763c5054c7a
 2016-11-18 14:38:41 +00:00
drh
54cda4edbe Disable the query flattener optimization for SELECT statements that are on 
the RHS of vector IN operators.  This is a hack that fixes the bug
described in ticket [da7841375186386c]. A better solution that does not
disable the query flattener is needed, but this will server for the time
being.

FossilOrigin-Name: 005d5b870625d175fdf3c0e87d974006c569d9e1
 2016-11-17 13:13:25 +00:00
drh
ba6eb8769f Experimental changes toward making snapshots serializable. 
FossilOrigin-Name: b6a81fa1fc1fb78a65894129851a4ec3986640de
 2016-11-15 17:37:56 +00:00
drh
d6ef5afe3f Change the OP_Last opcode so that it is a no-op if the cursor is already 
pointing at the end of the b-tree.

FossilOrigin-Name: 663473850c4274270445b3771911fa773a8c405f
 2016-11-15 04:00:24 +00:00
drh
c9b9deaee2 Make the VACUUM command about 9% faster by avoiding unnecessary calls 
to sqlite3BtreeMovetoUnpacked() while copying rowid tables.

FossilOrigin-Name: 5ed0bd387699a0f3b477d4f3cfcb460a6a44cb84
 2016-11-15 02:46:39 +00:00
drh
588429a87d Fix a potential use-after-free error during parsing of malformed 
CREATE TABLE statement.

FossilOrigin-Name: c5dbc599b910c02a961675b12b273b8df6d29450
 2016-11-14 20:08:00 +00:00
drh
2adb878b1f Avoid unnecessary calls to sqlite3ExprCacheAffinityChange() when generating 
OP_MakeRecord opcodes that do not change any register affinities.

FossilOrigin-Name: e211c579b2f092e3283edd5fb9add7c5183bac35
 2016-11-14 15:28:56 +00:00
drh
48c286fc61 Fix harmless compiler warnings in test code for MSVC. 
FossilOrigin-Name: 7b76be4117f4e57091b03fafcf42d17bce81160d
 2016-11-11 20:37:27 +00:00
drh
66adb0a848 Avoid storing redundant fields in sorter records when the sort-key 
and data have fields in common.

FossilOrigin-Name: b835cf3e507b910b6a3e0f802ce2c40a72d0c227
 2016-11-11 19:08:00 +00:00
dan
04cd7aa373 Merge trunk with this branch. 
FossilOrigin-Name: dd62d2de6eb12dc1902d6df050c395b1dcac01b4
 2016-11-11 18:45:55 +00:00
drh
d95ef5cb5a Remove obselete and unused logic in the update code generator. 
Fix the sqlite3BtreeMovetoUnpacked() routine so that it remembers the
rowid of the row that it landed on.

FossilOrigin-Name: 1a587d72f981cb7064cfd8916a52a83ad9ba6074
 2016-11-11 18:19:05 +00:00
dan
9af90b7231 Reenable the SQLITE_EXPR_REF optimization for "SELECT DISTINCT ... ORDER BY" 
queries.

FossilOrigin-Name: 6e2e9d383f5fc4a0cbf05fe83ec7425812c0f556
 2016-11-11 18:08:59 +00:00
drh
79297d1d59 Merge enhancements and bug-fixes from trunk. 
FossilOrigin-Name: 5515b827dc1805a3010018cd6abf222b03525d24
 2016-11-11 17:52:57 +00:00
dan
4a5bad572a Fix a problem with switching from wal to rollback mode when 
SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE is configured.

FossilOrigin-Name: 46e0016207b8e7df2ae6c7491fd0f3c2926eed21
 2016-11-11 17:08:51 +00:00
dan
3bafdede8a Handle some obscure "row value misused" cases that could cause segfaults or 
assertion failures.

FossilOrigin-Name: fba5fddb1c40af75634b01c1f06d2610df697e01
 2016-11-11 15:49:01 +00:00
drh
4e8142c726 Back out the "--raw" option on ".read" in the command-line shell. Instead, 
fix the command-line shell so that if EOF is reached without seeing a
final semicolon, it goes ahead and passes the accumulated SQL text to
SQLite.

FossilOrigin-Name: f98c8ac8c485098f163400d3a92d6afb4008adbe
 2016-11-11 14:54:22 +00:00
mistachkin
2f9a613ced In the command line shell, avoid using utf8_printf() in a couple places where it is superfluous. 
FossilOrigin-Name: 6311a8bdb1f2e1813516a32d171aae030bd73fd3
 2016-11-11 05:19:45 +00:00
drh
c5b86be7db Add the --raw option to the ".read" dot-command of the command-line shell, 
to cause the named file to be read and sent directly into sqlite3_exec()
without any interpretation.

FossilOrigin-Name: 09233770b24d69a305556241a6beeb5e4d77c0d7
 2016-11-11 04:37:00 +00:00
drh
4360fcea6d Take care not to try to generate code for the ATTACH and DETACH commands 
if there were syntax errors during parsing.
Fix for ticket [2f1b168ab4d4844]

FossilOrigin-Name: b0ff183b8ffdbebece06cfea1c6781fc0e8e8547
 2016-11-11 03:37:24 +00:00
drh
7a1c28defe Avoid a few unnecessary calls to sqlite3BtreeMovetoUnpacked(). 
FossilOrigin-Name: eac0e827a61cfec4dd9b6d407ff398e9fda3510b
 2016-11-10 20:42:08 +00:00
dan
257c13fa00 Avoid storing redundant fields in sorter records when the sort-key and data have 
fields in common (as in "SELECT a FROM t1 ORDER BY 1").

FossilOrigin-Name: 0af62fdbd8e2aab14718ff8bcb5934f05463c176
 2016-11-10 20:14:06 +00:00
drh
c6c9e158c5 When doing a REPLACE on a WITHOUT ROWID table with no secondary indexes, 
bypass the OP_NoConflict/OP_Delete sequence and directly overwrite any
preexisting row, for a performance increase.

FossilOrigin-Name: f7041cbb63b912f9ecad538804b6f2383efbec4e
 2016-11-10 17:01:36 +00:00
drh
bf2f5739c9 Remove C++ style comments. No code changes. 
FossilOrigin-Name: 42f8aa6231bf4ed74bebdc85aa79d23dc20b3c14
 2016-11-10 16:07:43 +00:00
drh
2c4dfc3095 Add the unpacked key fields to OP_IdxInsert for INSERT and UPDATE statements. 
FossilOrigin-Name: 67602e40f122cbb6354048a64c5d3a72b2855ec7
 2016-11-10 14:24:04 +00:00
drh
eaf6ae2992 Comment changes that attempt to better explain the behavior of the "seekResult" 
field on VdbeCursor objects and the seekResult parameter to
sqlite3BtreeInsert() and the OPFLAG_USESEEKRESULT flag on insert opcodes.
No changes to code.

FossilOrigin-Name: 345b46be75bdf6f9fb7367a6164d89bae11995a6
 2016-11-09 20:14:34 +00:00
drh
7405fa745e Fix a simple comment typo. No changes to code. 
FossilOrigin-Name: 51d0aed8d63d0710e4aa8925ff18cf3c45dc9e42
 2016-11-09 16:03:36 +00:00
drh
4a8b013ef6 Make use of the unpacked key on the OP_IdxInsert on sorters with a LIMIT. 
FossilOrigin-Name: 42db7cd2c0b367f7dfe733bdaf006538937b812a
 2016-11-09 01:38:56 +00:00
drh
fb8c56f21b Fix a typo on the OP_IdxInsert documentation. No code changes. 
FossilOrigin-Name: e4acd98207bf12b28f6c0f77896ba8f0b0a155d5
 2016-11-09 01:19:25 +00:00
drh
7723371eb7 Remove the "experimental" marking from the sqlite3_preupdate interfaces. 
But be sure all the interface definitions are within 
documentation.

FossilOrigin-Name: d6dd2ad35ed17e980ed564688499c802e5850386
 2016-11-09 00:57:27 +00:00
drh
9b4eaebc68 Enhance the OP_IdxInsert opcode to optionally accept unpacked key material. 
FossilOrigin-Name: 89d958abbac45f2ca5954080cd9e74ec9a07ebb2
 2016-11-09 00:10:33 +00:00
dan
3b908d41a0 Avoid superfluous cursor seeks in "INSERT OR REPLACE" statements. 
FossilOrigin-Name: bec5b6d4d083556d111a89186b4f7b35b5e7cebf
 2016-11-08 19:22:32 +00:00
drh
9d06ff2cb7 Avoid generating OP_TableLock unnecessary instructions on btrees that 
are not sharable.

FossilOrigin-Name: 8cb8516d2009d52d35a22263e4c892f162b34b81
 2016-11-08 17:19:22 +00:00
dan
a2bfa046ea Avoid a crash that can occur after an obscure OOM in the built-in INSTR() 
function.

FossilOrigin-Name: b86b79c442a58d10aa005ba4f34095375a88d242
 2016-11-04 12:05:29 +00:00
drh
54fc5cc2ae Add an assert() to silence a coverity false-positive. 
FossilOrigin-Name: 97354093bceff28714a605068851cfa026c8272a
 2016-11-04 11:23:30 +00:00
drh
59ce2c434c In the command-line shell, fix the .imposter command so that it works 
with indexes on expressions.  Fix the ".mode quote" mode so that it works
with ".headers ON".

FossilOrigin-Name: ba9873da94d21873ff76f16a5332fc0092d83f70
 2016-11-03 13:12:28 +00:00
drh
16eb59484f Add the ".imposter" command to the command-line shell. 
FossilOrigin-Name: be3ec8fdcf1541017ca9375df07645db2a9a3f5a
 2016-11-03 13:01:38 +00:00
drh
6027561178 Fix an possible NULL pointer deference in the command-line shell that can 
occur when using imposter mode.

FossilOrigin-Name: ad08753a8bbf073ec4af9c3a5783ed664244d954
 2016-11-03 02:25:30 +00:00
dan
75ba676790 Fix an issue that was causing the new database image to be assembled entirely 
in heap memory when VACUUMing a database, even if it should use a temp file.
This could cause SQLITE_NOMEM errors when vacuuming very large databases on
32-bit systems.

FossilOrigin-Name: 3028845329c9b7acdec2ec8b01d00d782347454c
 2016-11-02 14:50:19 +00:00
drh
e77caa191b Fix a requirement mark. No changes to code. 
FossilOrigin-Name: d18f61b78c8fafef742efbc890382537e8584180
 2016-11-02 13:18:46 +00:00