2c2f392dca
Add interfaces sqlite3_prepare_v3() and sqlite3_prepare16_v3() with the
...
extra prepFlags argument. Add the SQLITE_PREPARE_PERSISTENT option as one
bit in that argument.
FossilOrigin-Name: 4a25c5883380fe5990d8180adb58c3bdc7a3d081bc4c69cd4de3cd57074fb251
2017-06-01 00:54:35 +00:00
b8a1290a28
Very small performance increase in sqlite3VdbeSetNumCols().
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FossilOrigin-Name: 8885b4461044ae8ecdfe1b9aa47f4aad65efabc98e3fcd9e307a06504fab34c6
2017-05-31 11:24:13 +00:00
e70d01f143
More efficient error handling and reset in the binding mechanism.
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FossilOrigin-Name: 9a3e3b34ba6eafce2f560c13225a3673e18d696b29295b59d958e938fa593baf
2017-05-29 22:44:18 +00:00
21766c0c16
Fix a case where NULL was being passed to memcmp() following an OOM. This is
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probably not a real problem, as the number-of-bytes parameter was passed 0 in
this case, but it was causing a santizer complaint.
FossilOrigin-Name: 3ea2bad27e516d5dbfa4a9cb0c767d6a8387280a7e4bbf2ae80cd318da670d66
2017-05-22 08:04:09 +00:00
f7fa4e71f4
Negative N values in sqlite3_get_auxdata() and sqlite3_set_auxdata() can be
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used to access an auxiliary data cache over all functions in a single prepared
statement.
FossilOrigin-Name: ff5306752e83e760255a10f20168c0f090929a4fee2a5f720dfab36f0ee72fae
2017-05-11 15:20:18 +00:00
e694139788
Rename fields of the internal AuxData object to make them unique and easier
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to search for.
FossilOrigin-Name: 2be9850cef6492e168243807c34af72119ffbe414027a12c4eda6c421b5b950d
2017-05-10 19:42:52 +00:00
33543c237b
Minor bug fixes and performance enhancement.
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FossilOrigin-Name: b2aae559581d05e4e8caaddfbd137cb275d582e82d58872c6f42e462dc859b1c
2017-05-01 16:37:20 +00:00
e08e8d6b61
Initial implementation of an optimization that attempts to reuse the same
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materialization of a view on a self-join of the view.
FossilOrigin-Name: 478c34b9a8b5127d13024e10307aa832f160b89720c46424dd17555bd36f590d
2017-05-01 15:15:41 +00:00
0415d826c0
Smaller and faster vdbeFreeOpArray()
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FossilOrigin-Name: e052436d9f54b785facd661adc648512356b831c0547aa8f347ebf4bd8ef1254
2017-04-10 20:51:21 +00:00
dbd6a7dc06
Split off sqlite3DbFreeNN() from sqlite3DbFree() and use it in cases where
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we know that the argument to be freed is never NULL.
FossilOrigin-Name: ad90e8bb5e47945607c8fb47b6ade8cfc52a9b684805cc40132629be0ecc14cc
2017-04-05 12:39:49 +00:00
96a7e28df6
Remove an unnecessary clearing of the Vdbe.iCurrentTime value.
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FossilOrigin-Name: fcd2acdd6075aa9a7a66ce254eba77485f7b2804127e109c0309173488cd4b87
2017-04-01 19:45:20 +00:00
1cb0266dcb
Begin enforcing the SQLITE_LIMIT_VDBE_OP. The documentation warned that this
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day might come.
FossilOrigin-Name: ef5914617088cbf89bfae88f63ea959a07f02dff387ddc2b43948ad99c6a97b8
2017-03-17 22:50:16 +00:00
2996796dcf
If a reprepare is needed after binding to a variable with a number larger
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than 32, set only the high-order bit of the Vdbe.expmask rather than setting
all bits. This could potentially result in fewer false-positive reprepares.
FossilOrigin-Name: 45797feefe90cb7da53256b0c42fdaa1221d0a27
2017-03-03 21:51:40 +00:00
76adb23980
Make sure the Vdbe.expmask value is set correctly in sqlite3VdbeSwap().
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This fixes a problem introduced by [a8fd7052].
FossilOrigin-Name: 29f54b899e5cf22ece98ab41c39c41d75a4b228d
2017-03-02 13:13:30 +00:00
bda4cb876c
Save a few bytes and a few cycles by setting Vdbe.expmask to zero for
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statements prepared using legacy interface sqlite3_prepare().
FossilOrigin-Name: a8fd705258643863493476f8b42ee981608a339f
2017-02-23 16:30:16 +00:00
1325adf5e9
In sqlite3VdbeHalt(), return as soon as possible if
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Vdbe.magic!=VDBE_MAGIC_RUN. This makes sqlite3_reset() slightly faster in some
cases.
FossilOrigin-Name: 80adc0cb4ed7bacc54b15ac8b5b205403939c8c4
2017-02-21 21:24:05 +00:00
d879e3eb8d
Change all legacy instances of "#if SQLITE_DEBUG" to "#ifdef SQLITE_DEBUG" for
...
consistency.
FossilOrigin-Name: 670f10b24230863688270d12ac519609ade2302b
2017-02-13 13:35:55 +00:00
cb9a364390
Experimental change to invoke the preupdate hook when WITHOUT ROWID tables are
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written.
FossilOrigin-Name: 856f8604c59c8fdd9bfb7d86fc0e212f091ab49a
2017-01-30 19:44:53 +00:00
d08406477a
Performance optimization in sqlite3VdbeCloseStatement().
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FossilOrigin-Name: 1e96e5ec1ee617cb5b5cbdc5a2ee79c8cc35821d
2017-01-26 17:11:18 +00:00
2a86c1962c
Fix a problem with the pre-update hook on this branch.
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FossilOrigin-Name: 6fc4fbfa29cfa795edf32e4a1f2d0eceb3007f68
2017-01-25 17:44:13 +00:00
585ce1923c
Experimental enhancement to automatically trim NULL values from the end of
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records, for a reduced disk footprint. This change also involves increasing
the P5 operand from 8 to 16 bits.
FossilOrigin-Name: 118ded403b95050b74ae2b03919c43d614094a32
2017-01-25 14:58:27 +00:00
9e1ab1a8a4
Ensure that sqlite3_column_count() returns 0 for the "set" mode of "get/set"
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PRAGMA statements that do not return a value in that case (e.g. page_size,
cache_size, auto_vacuum).
FossilOrigin-Name: 5c05d8ec5e895661dae2de30c73dfdeaff93511e
2017-01-05 19:32:48 +00:00
f326d66d61
Fix the VList object so that it actually works.
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FossilOrigin-Name: 9dcd85698af46fd5ba34004ca690d368c4ae3078
2016-12-23 13:30:53 +00:00
9bf755cc44
Use the VList object to replace Parse.azVar for tracking the mapping between
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SQL parameter names and parameter numbers. There is a performance
improvement, though there are still a few hiccups in the current code.
FossilOrigin-Name: 68ecafa1425a41358c88f41efea3262f1b4490f2
2016-12-23 03:59:31 +00:00
a582b01698
Simplifications to the way UnpackedRecord objects are allocated. Smaller
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and faster code that also fixes a subtle (currently unreachable) bug.
FossilOrigin-Name: f7ab01f254cd9d7006b8dec29adb234a671b8e6f
2016-12-21 19:45:54 +00:00
fbd8cbdcf5
Reorder the fields in the VdbeCursor object so that those that need to be
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bulk zeroed on allocation are grouped at the beginning, and the memset()
only runs over those fields that really need it.
FossilOrigin-Name: 8165f88bb1d40693d67005a8d5dc499085f64b91
2016-12-10 12:58:15 +00:00
f14b7fb73b
Add the sqlite3VdbeAppendP4() method for adding P4 content to the most recently
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coded instruction.
FossilOrigin-Name: 28883e8f3e92a8015fb5f6c8ae8580833931543d
2016-12-07 21:35:55 +00:00
861b1307cb
The use P4_DYNAMIC in place of the P4_MPRINTF operand type.
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FossilOrigin-Name: 3954f83798ed78527280c9db6360c62a5134b9ec
2016-12-07 20:22:31 +00:00
bdaa1ee2ee
Performance optimization for sqlite3VdbeAddOp4().
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FossilOrigin-Name: 04716c907bf9fc9b827e18fdc7b4e1069e201536
2016-12-07 20:09:51 +00:00
cb3cabd01b
Refactor the sqlite3BtreeKey() and sqlite3BtreeData() internal interfaces
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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
2016-11-25 19:18:28 +00:00
30642cf4d2
Correctly display the names of SQL functions in the VDBE_PROFILE output.
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FossilOrigin-Name: 161192f17273f32f1b3b82d41135aaca047e9a83
2016-11-23 14:19:11 +00:00
e43635aaa7
In the sessions module, avoid recording a change if an UPDATE statement
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overwrites a column with REAL affinity containing an integer value with the same value.
FossilOrigin-Name: b861328ab9ceec6926d97658c3606e6ae9ad39bf
2016-10-21 21:21:45 +00:00
230368c30d
Remove an unnecessary memset() call.
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FossilOrigin-Name: a76bff74ce47c9c98106566bde5d781992657e22
2016-10-01 19:32:54 +00:00
d8e4b13256
Use sqlite3DbMallocRawNN() where appropriate, instead of
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sqlite3DbMallocRaw().
FossilOrigin-Name: 54a449a41d8d32da2f8b73689227ced866974a18
2016-10-01 19:21:56 +00:00
8dfef1175e
Make sure deleting an unused prepared statement does not reference
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uninitialized fields in the structure.
FossilOrigin-Name: 7983eef0422439bfc85950554b000d46a9767ee3
2016-10-01 16:53:45 +00:00
ab3182f7c4
Avoid unnecessary zeroing of fields in the Vdbe object when it is allocated.
...
FossilOrigin-Name: 1e21bbe836539e64d24857f4faa3d12cd607dc7e
2016-10-01 00:37:50 +00:00
9b40d13f43
Fix the Parse.aColCache column cache so that all of the valid entries are
...
in the first Parse.nColCache slots.
FossilOrigin-Name: 6028502059ccbd3699637b7a70a6d8ce1b7c3dad
2016-09-30 20:22:27 +00:00
2a1df937ab
Avoid unnecessary Mem initializations when generating a new sqlite3_stmt
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object.
FossilOrigin-Name: 47ae1cda8dc255d100aeb8cb90ea4c9e449509be
2016-09-30 17:46:44 +00:00
dd3bfe8648
Small size and performance optimization to sqlite3VdbeChangeP5().
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FossilOrigin-Name: 3c93c8f5bbf54ed2a331079b28fdd94eb0e59e69
2016-09-29 20:28:34 +00:00
2831c4d123
Remove the peep-hole optimization of removing OP_Close opcodes that come
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before OP_Halt, as the extra work of removing those opcodes uses more cycles
than just running them.
FossilOrigin-Name: 984a96d79656c1b095aba1f88aca4bb787ba0bd8
2016-09-29 19:50:02 +00:00
8aaf7bcc8d
Avoid unnecessary calls to ExpandBlob() for smaller and faster code.
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FossilOrigin-Name: 5e196fd18169e84806cd45dd1a8190339323e772
2016-09-20 01:19:18 +00:00
9e5eb9c8cc
Revise the implementation of OP_Once so that it is smaller, faster, and uses
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less memory. This also fixes an obscure bug introduced 3 days ago by check-in
[5990a1bdb4a073].
FossilOrigin-Name: 6bf5ba10d28f1b0a32aa9a560ae3143a1235eadb
2016-09-18 16:08:10 +00:00
72ceae01e5
Slight size reduction and performance increase in sqlite3VdbeHalt().
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FossilOrigin-Name: 5990a1bdb4a0734ff23015ada71cf02d0cb1381f
2016-09-15 00:32:42 +00:00
5f6eb1a0dc
Optimization to vdbeRecordCompareInt() makes it slightly smaller and faster.
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FossilOrigin-Name: 5a2a7712cb8e0b686942dfab4e9e67b5ea7b2be3
2016-09-15 00:04:46 +00:00
64caee4086
Performance improvements to the comparison operators in the bytecode engine.
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FossilOrigin-Name: 37803b19d219f4107f29b240d5d314600e4bd236
2016-09-09 19:33:00 +00:00
1ad78c5791
Fix the extra comments (added with -DSQLITE_ENABLE_EXPLAIN_COMMENTS) so that
...
the sense of <, <=, >, and >= tests is correct and so that the
SQLITE_STOREP2 version is shown correctly. These changes are already in the
rowvalue branch but are added here since they are technically unrelated to
rowvalue.
FossilOrigin-Name: 4d43c4698eef4e3db7556813f0274b4018c7c2b9
2016-08-27 14:05:12 +00:00
557341e8fa
Add requirements marks to the sqlite3_trace_v2() interface documentation.
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FossilOrigin-Name: ebd388e94da4a2b29c2a546f832d359619803ec5
2016-07-23 02:07:26 +00:00
cf1e395acb
Fix sqlite3VdbeExpandSql() so that it handles OOMs by always returning NULL.
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FossilOrigin-Name: 5a027fe4127d498e0dc0d9439131c6a29085cf0a
2016-07-23 00:43:14 +00:00
9a8b9ec51c
Be sure to hold the database connection mutex while calling sqlite3VdbeExpand()
...
from within sqlite3_expanded_sql().
FossilOrigin-Name: 527b5ba68c0b0185958b945b197f9022951d9379
2016-07-22 20:45:03 +00:00
8d85364261
The sqlite3_expanded_sql() function compiles, but always returns NULL, when
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the SQLITE_OMIT_TRACE compile-time option is used.
FossilOrigin-Name: 53c25ebe34e6776a12260078852973b1d581d20f
2016-07-15 10:01:06 +00:00
drh