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ae651d614e6ebc7e738ea44e885a122b03943bfb
Commit Graph

1129 Commits

Author SHA1 Message Date
drh
ae651d614e Add comments to the WHERE_DISTINCT_* macros. No changes to code. 
FossilOrigin-Name: 82320501904f65030622a67836ba30f412169056
 2012-09-19 17:31:15 +00:00
drh
de9a7b8a94 Add the ability to disable the covering-index-scan optimization at compile-time, 
start-time, or at run-time.  Add test cases to check this configurability.

FossilOrigin-Name: ccb8ecc30c8e6c7760131250297c2e452bbac43b
 2012-09-17 20:44:46 +00:00
drh
f4af1089ab Remove obsolete bits from the bitvector that defines disabled optimizations 
in the SQLITE_TESTCTRL_OPTIMIZATIONS verb of sqlite3_test_control().

FossilOrigin-Name: 4c21ee2d26466f83dec525153e2b1506bd956701
 2012-09-17 19:12:39 +00:00
drh
4261096124 Remove an unnecessary parameter from sqlite3Utf8Read() resulting in a slight 
performance increase.

FossilOrigin-Name: 8b962c94a2f829f71efdd0ca770469b02feea3e1
 2012-09-17 18:56:32 +00:00
drh
5f08526937 Factor out the code that generates a co-routine for evaluating the SELECT 
on the RHS of an INSERT statement so that the same code can potentially
be reused in other places.

FossilOrigin-Name: a93ee09cdc15987848bf9023e69892ce9a5f989e
 2012-09-15 13:29:23 +00:00
drh
6ec6549158 Improved alignment of fields in the Expr object gives an 8-byte size 
reduction on 64-bit machines.

FossilOrigin-Name: 6b252a0d1a78db7bf2d650bafc214ea4064eef9e
 2012-09-13 19:59:09 +00:00
drh
d815f17dab Reduce the size of the Table object by 16 bytes on 64-bit machines, mostly 
by avoiding intermixing pointer fields with integer fields.

FossilOrigin-Name: 1cb9aedfcf81f0086fa741cb29a062ee87724a5e
 2012-09-13 14:42:43 +00:00
drh
a371ace426 Change boolean fields in the Column object from unsigned characters into 
bits in a single bit mask variable.

FossilOrigin-Name: 4163f5f194741bc2bdf141973912661c6aac70f1
 2012-09-13 14:22:47 +00:00
mistachkin
d5578433ff Fix all known instances of 'repeated the' style typos in comments. No changes to code. 
FossilOrigin-Name: 9b19b847533f944f289d93dcdba29c0d67bf251c
 2012-08-25 10:01:29 +00:00
drh
d40e208726 Move field WhereLevel.pCovidx inside the union to WhereLevel.u.pCovidx. 
FossilOrigin-Name: b722143d075979ba3d92b7b29e576ce2307187d1
 2012-08-24 23:24:15 +00:00
dan
0efb72c969 Fix a problem to do with multi-or queries and automatic indexes. 
FossilOrigin-Name: a3e26038a1d9f3331239f777c67d1920d904aab0
 2012-08-24 18:44:56 +00:00
dan
bfca6a4066 Experimental change to support the covering index optimization for queries with OR terms in the WHERE clause that search a single index more than once. 
FossilOrigin-Name: 1dc8c7c741a82bb98a07f3fdb8142d8bc8d8a98b
 2012-08-24 10:52:35 +00:00
drh
030796df8d Further improvements to the processing of nested aggregate queries. 
FossilOrigin-Name: 3c3ffa901f5ce8a523028ff15563ce3e0f55a641
 2012-08-23 16:18:10 +00:00
dan
428c218c90 When reusing pages as part of creating a new index, allocate the leaves from each free-list trunk page in ascending order, instead of trying to maximize localization for each individual allocation. This increases the chance that pages will be written to disk in ascending order by a large CREATE INDEX statement, improving overall performance. 
FossilOrigin-Name: d045f8b2d44e388d8c4549ff02d4ca7eff4e2038
 2012-08-06 18:50:11 +00:00
drh
2b596da8b7 Refactor field names in the SelectDest object to make them distinct and easier 
to grep for.

FossilOrigin-Name: b589f1efb3907a68058bf2ee981dca126d083e83
 2012-07-23 21:43:19 +00:00
drh
ed68801b20 Add the sqlite3_close_v2() interface (from the deferred-close branch) that 
allows close operations to happen out-of-order in bindings to
garbage-collected langauges.

FossilOrigin-Name: fb8893abeefabe9de44e34dcf4327764481189f5
 2012-06-21 15:51:42 +00:00
mistachkin
20b1ff0760 Fix spelling typo. 
FossilOrigin-Name: 6131a0002fea5d6f3b416a63a466bf2b69d1e12d
 2012-06-21 15:12:30 +00:00
drh
d1b0afc30c Fix the SQLITE_ZERO_MALLOC compile-time option so that it works on windows. 
FossilOrigin-Name: b80bc52f8964569f948c5671e9d58e4d199a08dc
 2012-06-21 14:25:17 +00:00
drh
bae591a960 Merge the latest trunk changes into shared-schema branch. Also fix a C99-ism 
in that branch.

FossilOrigin-Name: 42338e9e6979bb497823527f8f39e96f63623c59
 2012-06-05 19:20:03 +00:00
drh
4245c405ea The sqlite3_close() interface returns SQLITE_OK even if there are outstanding 
sqlite3_stmt and sqlite3_backup objects.  The connection becomes a zombie.
Resource deallocation is deferred until the last sqlite3_stmt or 
sqlite3_backup object closes.  This is intended to help SQLite play nicer
with garbage collectors.

FossilOrigin-Name: e276a02b7f54e804caa553dca99023416a415e1c
 2012-06-02 14:32:21 +00:00
drh
1b28b89319 Link the NDEBUG macro to SQLITE_DEBUG so that when SQLITE_DEBUG is defined, 
NDEBUG is automatically undefined an dwhen SQLITE_DEBUG is undefined
NDEBUG is automatically defined.

FossilOrigin-Name: 07935d10d341fe6265cfd3b09e2c4ef4005c4826
 2012-05-29 19:25:20 +00:00
drh
3a8c4be7d4 Candidate fix for the nested aggregate query problem of ticket 
[c2ad16f997ee9c8e].

FossilOrigin-Name: f3dd1fafd4718558de1f06139419a8c560d727f5
 2012-05-21 20:13:39 +00:00
drh
a51009b251 Convert the NameContext object from using u8 booleans to using individual 
bits in a single u8 as its booleans.  This change might become a basis for
a fix for [c2ad16f997ee9c].

FossilOrigin-Name: 722260969306778029b738402f22e3c154dd77a1
 2012-05-21 19:11:25 +00:00
drh
81028a455d The former sqlite3ResetInternalSchema() routine was really two different 
routines, selected by parameter, each with a confused mission.  So split
this routine up into three separate smaller routines, calling each
separately as needed.  Hopefully this will make further refactoring and
schema reset collateral damage containment easier.

FossilOrigin-Name: aa0c3493d3647d7efe527067e9fcccefda8e3008
 2012-05-15 18:28:27 +00:00
dan
bba02a95d9 When a connection disconnects from a shared-cache database, only delete the in-memory schema if there are no other connections. 
FossilOrigin-Name: 46f4eb5430d7bc9a339cdf7124ff4bd518eaa39b
 2012-05-15 17:15:34 +00:00
drh
374fdce485 Improved handling of aggregate subqueries within an aggregate query. 
FossilOrigin-Name: 430bb59d798286a86c351de92c429345f016b3f0
 2012-04-17 16:38:53 +00:00
drh
89d5d6a2a7 Fix the application-defined function logic so that functions with a variable 
number of parameters can be replaced or deleted correctly.  Also refactor
some of the function-finder code for clarity of presentation.

FossilOrigin-Name: 09d5581c81fb6a9bf6a369d0abf5ef6b54637576
 2012-04-07 00:09:21 +00:00
drh
f68686ae52 When a named CHECK constraint fails, include the name of the constraint 
in the error message.

FossilOrigin-Name: 1b75f301affac654bee24fa247046ea0782d3c4d
 2012-03-30 15:48:48 +00:00
drh
a748fdcc43 Evaluate typeof(X) and length(Y) where X is any column and Y is a blob column 
without actually loading X and Y from disk.

FossilOrigin-Name: b899dbeb60752843287e2c6ad3577e1d00f0d587
 2012-03-28 01:34:47 +00:00
drh
421377e67a Add the sqlite3_db_readonly() interface. This is still tentative, pending 
a closer look at other ideas to accomplish the same thing.

FossilOrigin-Name: 254f99ea9ff1534948bdb179e69ab0c940c87ec1
 2012-03-15 21:28:54 +00:00
drh
2938f924cc If a CHECK constraint is named, report that name on the error message when 
the constraint fails.

FossilOrigin-Name: 9a0f90d9deb335ac71044b8afa81538d85cc7ccf
 2012-03-07 19:13:29 +00:00
drh
3fa9730273 Change the SQLITE_FCNTL_PRAGMA file-control so that it can return a string 
value.

FossilOrigin-Name: fd8d7440277b17f57a6dc0a210f42adf1fa2dcd2
 2012-02-22 16:58:36 +00:00
drh
0f198a7409 Change the ROLLBACK command so that pending statements to not block it. The 
pending statements instead return SQLITE_ABORT upon next access.  Note: This
causes separate shared-cache connections in read_uncommitted mode to abort as
well.

FossilOrigin-Name: 9b66c79e054c8a109d1ee8d35fed1c42814c330d
 2012-02-13 16:43:16 +00:00
drh
a451017d62 Data structure cleanup. Remove unused fields. Rearrange other files for 
tighter packing and reduced memory usage.

FossilOrigin-Name: 0bc594e861ae1142e8c6c83f39b095e1432856bf
 2012-02-02 15:50:17 +00:00
drh
6c5351589c Simplified array allocation in the IdList and AggInfo objects. 
FossilOrigin-Name: 25df2a7458d025bc00380b4a0893637639f9f0d4
 2012-02-02 03:38:30 +00:00
drh
d872bb180c Remove the nAlloc field from the ExprList object. 
FossilOrigin-Name: 5963de303a9106b446a9423aa838bfdf6bc1e7f3
 2012-02-02 01:58:08 +00:00
drh
38d9c612ed Futher pedantic fixes to the sqlite3_uri_boolean() interface. 
FossilOrigin-Name: 77b3430de69e23ba3feda3d618fe4880dd465023
 2012-01-31 14:24:47 +00:00
drh
b421b894e0 Add support for IF NOT EXISTS on CREATE VIRTUAL TABLE. 
FossilOrigin-Name: 230983e86a897caa91a487ef2d4c1c7fb7c79f10
 2012-01-28 19:41:53 +00:00
drh
7b113bab79 Add support for multiple rows of VALUES in an INSERT statement. 
FossilOrigin-Name: eb3b6a0ceb8bfb9fd59ff5fec420f863a9b5c4e4
 2012-01-28 15:22:22 +00:00
drh
aa538a581a Make the use and function of SQLITE_DYNAMIC clearer. Add assert() statement 
to help ensure that SQLITE_DYNAMIC is not misused.

FossilOrigin-Name: ab80f2c3b2f1eea6e35989d3e9b6137b51091754
 2012-01-19 16:57:16 +00:00
drh
33f111dc72 Remove the undocumented PRAGMA omit_readlock hack. 
FossilOrigin-Name: 96900c47e4fc6ed55cefc10d55d3d8d16bcb1d31
 2012-01-17 15:29:14 +00:00
drh
cb15f35f3b Change the name ZERO_DAMAGE to the more descriptive POWERSAFE_OVERWRITE. 
The query parameter used to control this device characteristic is now "psow".

FossilOrigin-Name: 6191c5e45175f5c6040e891843b0725a929d6dd7
 2011-12-23 01:04:17 +00:00
drh
4b3ac73c2f Minor cleanups of the compound-subquery flattening logic. New test cases 
added for joins the compound subquery.

FossilOrigin-Name: 5061d85ff934db3c217c97acbbbed3286d9e02aa
 2011-12-10 23:18:32 +00:00
drh
678a9aa7bd Import the experimental parse-tree explainer, with fixes, from the 
tree-explain branch.

FossilOrigin-Name: bcbc7152d49107afa926c8950360c61a6cf3d244
 2011-12-10 15:55:01 +00:00
drh
a5eec8c8c3 Merge the latest trunk changes into tree-explain branch. 
FossilOrigin-Name: 1a360da0f8314f232c224c71829646bc7558892b
 2011-12-10 14:44:31 +00:00
dan
1d8cb21fdb Modify the OP_Once opcode so that it works correctly in trigger sub-programs. This is a candidate fix for [7bbfb7d442]. 
FossilOrigin-Name: 557c69055a300b4082830b5f4803091dca1c3140
 2011-12-09 13:24:16 +00:00
drh
7e02e5e6b5 Begin adding the data-structure explaining subsystem. All is contained within 
FossilOrigin-Name: 79ae51c5b1b20ed0a425a87e65a32a096a80b7e1
 2011-12-06 19:44:51 +00:00
drh
cdc6955716 Do not reuse temp registers originally allocated to a subroutine within 
the main body of the program logic, since if the subroutine is called
while the reused temp registers are in use, their values will get clobbered.
Candidate fix for ticket [3a77c9714e63330]

FossilOrigin-Name: 092d53315e50be42b51ef7b3069c82c32a129b6a
 2011-12-06 13:24:59 +00:00
drh
d4e244ad56 Remove unused fields from the Parse object. Documentation and formatting 
improvements on data structure definitions.

FossilOrigin-Name: 431556cac0b2c86d7f6a60412ff1023feeaafedf
 2011-11-29 15:40:32 +00:00
drh
76a3acacea Remove unused boolean fields from the UnpackedRecord object. 
FossilOrigin-Name: b10d091ec02e94643e865743129e2a21147b3136
 2011-11-29 15:04:12 +00:00