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Code Activity
19,138 Commits 1,610 Branches 185 Tags
98b677f2cb15b1dff79920237b9961d7b5c05a5a
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13138 Commits

Author SHA1 Message Date
drh
14e067455e Performance improvement in sqlite3VdbeMemShallowCopy() for the common 
case where the receiver does not require prior resource deallocation.

FossilOrigin-Name: d718ea36dce8cf1684c8bcda457fee87f8f8c4e2
 2015-06-17 23:28:03 +00:00
mistachkin
073664de88 Improve spacing and comment style for the shell. No changes to code. 
FossilOrigin-Name: 5b547da00d131a494a6b348339af3d91dfa6e3b6
 2015-06-17 18:57:37 +00:00
drh
5600329bc0 Merge all recent enhancements and fixes from trunk. 
FossilOrigin-Name: 199bfb67fdf642cca6cd5d460fa4dc602b94837a
 2015-06-17 18:18:51 +00:00
drh
bbe031f9f1 Fix a uninitialized variable use in the command-line shell when the 
".open" command is invoked without any arguments.

FossilOrigin-Name: fc4f4d1eccec2e09b5d2e6c4da082204f4d5a016
 2015-06-17 17:08:22 +00:00
drh
b0870486aa Performance optimization and comment fixes for the LIKE and GLOB operators. 
FossilOrigin-Name: c89d772628564a808173f6f73bc1798ec714276b
 2015-06-17 13:20:54 +00:00
drh
c5b41ac8ee Make getCellInfo() a real function instead of a macro, for a size reduction 
and a 0.2% performance gain.

FossilOrigin-Name: 55c393ea14197ae5fa56ebca7a47e7d980511fa7
 2015-06-17 02:11:46 +00:00
drh
f1aabd6b78 Optimizations to two VDBE accessory routines for a 0.2% performance increase. 
FossilOrigin-Name: 66d033b9c9a8c16b9a342be0b325bd85b8487c03
 2015-06-17 01:31:28 +00:00
drh
0dd5cdaea5 Ensure that the CREATE TABLE AS statement correctly undoes partial changes 
to the sqlite_master table if the SELECT on the right-hand side aborts with
an error.  Fix for ticket [873cae2b6e25b]

FossilOrigin-Name: 400e025e7c61efab71b891743c07a0862e5bb934
 2015-06-16 16:39:01 +00:00
drh
3e24a34324 Fix a harmless comment typo. No code changes. 
FossilOrigin-Name: ae6876521819e7a8ce473c8f96617cba35e2156d
 2015-06-15 16:09:35 +00:00
drh
f5ed7ad63e Fix harmless compiler warnings. 
FossilOrigin-Name: b0badb99023e23bef0e2064cec58f2b279af0c0b
 2015-06-15 14:43:25 +00:00
drh
e4d38707ea Improved detection of database corruption in freeSpace(). 
FossilOrigin-Name: 29bcb56887f862a1f06677a7b4bfae6475d29732
 2015-06-15 12:58:15 +00:00
drh
c056e4b257 Comment typo fix. No code changes. 
FossilOrigin-Name: 17f185adb960b1fa4faa13cdf685b92a20a52072
 2015-06-15 10:49:01 +00:00
drh
982215a2c5 Avoid unnecessary mutex usage in pcache1, for a significant speedup. 
FossilOrigin-Name: dcf4fb8d764611de60afea27cda0a8548ba7ca82
 2015-06-13 11:10:55 +00:00
drh
55a46c9b0e Add a fast-path implementation of pcache1Fetch() for the common case of 
separate caches that do not use a mutex.

FossilOrigin-Name: 760700edb3ff1f5d6bf3058f874cc8e2808905c7
 2015-06-12 13:49:26 +00:00
drh
b230a52892 Minor performance optimization in pcache1.c. 
FossilOrigin-Name: 2e8ad2ead9d146e312c693d9b967bbd5b92429d9
 2015-06-12 13:04:51 +00:00
drh
36b80349b7 Add the OP_ColumnsUsed opcode (when compiled with 
SQLITE_ENABLE_COLUMN_USED_MASK) as a hint to the b-tree layer as to which
columns of a btree cursor will be used.

FossilOrigin-Name: 711a176cbfad5dde6defa9648fba6d0d663af134
 2015-06-12 12:54:15 +00:00
drh
60c97e6aa8 Merge recent trunk enhancements and fixes. 
FossilOrigin-Name: c39cb0e2571f58c87053de009e2c135d71b2c3af
 2015-06-11 18:01:29 +00:00
drh
72bc8208f0 When generating code for partial indexes, be sure not to modify the 
index condition expression in the schema.

FossilOrigin-Name: e63d01c69c3e50f49ee3022a519c4f3e91f00520
 2015-06-11 13:58:35 +00:00
dan
4430b40934 Remove some repeated lines of source code. Probably introduced by careless cut'n'pasting. 
FossilOrigin-Name: a34cd71c8aafaece04a2332a127e9b8e99c1403c
 2015-06-09 10:58:51 +00:00
dan
35175bf7ab If a query contains "FROM t1 LEFT JOIN t2, t3, t4", ensure that tables t3 and t4 are not scanned before t2. The trunk already does this. 
FossilOrigin-Name: 0d9edfab9fb61322620f188b48ae2a1798a07581
 2015-06-08 18:48:29 +00:00
dan
4f20cd402b Avoid passing constraints that are unusable due to LEFT or CROSS joins to virtual table xBestIndex() methods. 
FossilOrigin-Name: 80ee56dda7db3860f8be5f6968c8745138f8453f
 2015-06-08 18:05:54 +00:00
mistachkin
f5b5f9b972 Fix typo in comment. No changes to code. 
FossilOrigin-Name: e49c291735e613e384f6da044ef865dd274cabc8
 2015-06-08 17:42:57 +00:00
drh
38b4149ca1 Factor out the TreeView parse tree printing module into a separate file. 
FossilOrigin-Name: c32ce54ca46a4be4373983be6fd44b1f3a0250d1
 2015-06-08 15:08:15 +00:00
drh
6c1f4ef217 Split more subfunctions of where.c out into a new whereexpr.c source file, 
for improved maintainability.

FossilOrigin-Name: 46ef95c108ad8961f2bf3d2dc839d4fb1fddd770
 2015-06-08 14:23:15 +00:00
drh
6f82e85a80 Split out the bulk of the actual VDBE code generation logic from where.c 
into a new file, leaving behind the analysis logic.  This makes the original
where.c smaller and hopefully easier to edit.

FossilOrigin-Name: faa0e420e93a2bc1c84df9eb9fef4748d29ce339
 2015-06-06 20:12:09 +00:00
drh
b121dd14ac Code simplifications in select.c and where.c. 
FossilOrigin-Name: 4f20ac90bce8bd7ba43ef59af5cc4ef7aa282fe8
 2015-06-06 18:30:17 +00:00
drh
adc57f6834 Minor cleanup of the sqlite3Select() procedure. 
FossilOrigin-Name: f4c90d06bb941453d8110680c7b279e471e8f034
 2015-06-06 00:18:01 +00:00
drh
4490c40b90 Split FROM-clause subquery flattening and code generation into separate loops. 
FossilOrigin-Name: be8e3fc70e4c13b28b07985df3457960f58ffddd
 2015-06-05 22:33:39 +00:00
drh
bc8edba10a Provide one final Select tree dump prior to WHERE clause analysis 
when ".selecttrace 0x400" tracing bit is set with SELECTTRACE_ENABLED.
Analysis and debug changes only - normal builds are unaffected.

FossilOrigin-Name: 283bf0b64da7acc5aa5812fc659954965002d409
 2015-06-05 20:27:26 +00:00
drh
97bae794c2 Add a new opcode to the VDBE that gives the b-tree a hint about the set 
of columns in a table or index that are actually used by the query.

FossilOrigin-Name: f167bba446b78dd7538d0b2bae3e6678f3b1ba28
 2015-06-05 15:59:57 +00:00
drh
d62fbb50e6 Change the name of SrcList.a[].zIndex to the more descriptive 
SrcList.a[0].zIndexedBy.

FossilOrigin-Name: 6a9cf063379118dbb95c6cdc6d60af50e9867177
 2015-06-04 12:08:53 +00:00
drh
24dee9d214 Always check for cell overflow before returning a slot from the 
pageFindSlot routine in btree.c.

FossilOrigin-Name: 9f035c45a4b84203e67b6e1b23cf11691dc43f1e
 2015-06-02 19:36:29 +00:00
drh
4c393a82df For FROM-clause subqueries that cannot be flattened, try to push relevant 
WHERE clause terms of the outer query down into the subquery in order to help
the subquery run faster and/or use less memory.

FossilOrigin-Name: 6df18e949d3676290785143993513ea1b917d729
 2015-06-02 18:09:18 +00:00
dan
167fd757f0 Merge latest trunk changes with this branch. 
FossilOrigin-Name: c9ffda4abb4390bbc5719e269196e2807b254f97
 2015-06-02 18:07:58 +00:00
drh
05883a3409 Rename SQLITE_AFF_NONE to SQLITE_AFF_BLOB. 
FossilOrigin-Name: bce3f04186cd2d69414a5a98b5b77dc8f060554a
 2015-06-02 15:32:08 +00:00
drh
cd8fb7cfd5 Fix a faulty assert() in btree.c. Update the database fuzz test file with 
new test cases.

FossilOrigin-Name: 4e621af1345a001360938de76e3b0a14deb5e991
 2015-06-02 14:02:18 +00:00
drh
69b72d5a29 For FROM-clause subqueries that cannot be flattened, try to push WHERE clause 
terms of the outer query down into the subquery in order to help the subquery
run faster and/or use less memory.

FossilOrigin-Name: 297fae7551a2af9e600d833801ff79fca0602ad5
 2015-06-01 20:28:03 +00:00
drh
fcb9f4f3ca Corrections to comments in expr.c. No code changes. 
FossilOrigin-Name: f925389eaf5bf8962a28fcaa652b75caa606efba
 2015-06-01 18:13:16 +00:00
mistachkin
2efcf2aac2 Fix minor typo in comment. No changes to code. 
FossilOrigin-Name: 73fc058b3a74c1b018cff990de793f19a602c12f
 2015-05-30 22:05:17 +00:00
drh
ad2c1dd782 Import recent enhancements from trunk. 
FossilOrigin-Name: 54bec164ebeaf62d783352b3c4d0de8845394091
 2015-05-29 19:04:58 +00:00
drh
1c8badeb26 Ensure that allocateBtreePage() always clears the MemPage pointer when 
it fails due to an I/O or memory allocation error.

FossilOrigin-Name: 09a38bf665902834936d39341627ded88142e6ae
 2015-05-29 18:42:11 +00:00
drh
e726622579 Move two unreachable conditionals inside of NEVER() or assert(). 
FossilOrigin-Name: db4e9728fae5f7b0fad6aa0a5be317a7c9e7c417
 2015-05-29 17:51:16 +00:00
drh
1f2d968622 Remove a corruption test in balance_nonroot that is superceded by a prior 
better check.

FossilOrigin-Name: 00693682d8664fa608ba43684f6376a9bd5b84eb
 2015-05-29 17:13:14 +00:00
drh
d092ed4355 Add some extra source-code comments and a test case. 
FossilOrigin-Name: 6d410442fb532e2cf0ad1859bc9e843651f8ff4d
 2015-05-29 14:36:30 +00:00
drh
7b3aa08e22 An attempt to allow automatic index creation on subqueries accessed via 
co-routine.

FossilOrigin-Name: 521345add67e9dfd7df1446eb942aa0d84b9e6eb
 2015-05-29 13:55:33 +00:00
drh
7cea7f95c7 Using "SELECT ALL" instead of just "SELECT" on a query that uses a single 
unflattenable subquery or view in its FROM clause will force the subquery to
be manifested into a temporary table rather than run incrementally using a
co-routine.  This is a stop-gap means of controlling the decision to manifest
while we try to work out a better to make that decision automatically.

FossilOrigin-Name: a29e117d7ecec05da949348689dbfb0d3acb1280
 2015-05-29 01:35:19 +00:00
drh
c68275032e Added comments and testcase() macros to error cases in the btree search. 
FossilOrigin-Name: 7da7dc714bf1fe34b38fc33a923490dfd3e4f070
 2015-05-28 15:14:32 +00:00
drh
73d340adff Earlier detection of incompatible sibling pages in balance_nonroot. 
FossilOrigin-Name: 60a09f17d8b70dbc4b020586a1b81bce76882729
 2015-05-28 11:23:11 +00:00
drh
7e8c6f1c2e Add the btreeGetUnusedPage() routine to btree.c, and use it to detect content 
pages on the freelist and to cause that condition to trigger an SQLITE_CORRUPT.

FossilOrigin-Name: fe15d1f70360d6fef8ef1a111dd43e060d059623
 2015-05-28 03:28:27 +00:00
drh
275fe3adf1 Do not attempt to take any write lock on a read-only database on Windows. 
FossilOrigin-Name: a47ff0cdab0f82398c68ea770053f193f4812a51
 2015-05-28 00:54:35 +00:00