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22,526 Commits 1,607 Branches 185 Tags
8ddf686267c58ee0e519cfd9024f177e606be0ab
Commit Graph

1264 Commits

Author SHA1 Message Date
drh
521d7bd214 Remove an incorrect and pointless assert(). 
FossilOrigin-Name: 8c3929bd42ff9c041df341aced5b7dbc0f563506
 2015-05-25 09:33:48 +00:00
drh
e2248cfd2d The SRT_Table type for the SelectDest object is now just an SRT_EphemTab for 
which the ephemeral table has already been allocated.

FossilOrigin-Name: b9727e6bbfc3c62c601227e86e62f2f39792fd1d
 2015-05-22 17:29:27 +00:00
drh
7f0cd09cdd Enhance the selecttrace display by showing Select.selFlags. 
FossilOrigin-Name: 45d3893c6142ee1dfed48e26a13cf547da12468a
 2015-05-19 23:56:07 +00:00
drh
df553659ad Make a hard copy of the results of a subquery lest the result of the 
subquery be referenced after a change to the table that generated the subquery
result.

FossilOrigin-Name: 9c0d80907b4dee8ee8f205c2ebdb759f5ba1d771
 2015-05-18 04:24:27 +00:00
drh
9af8646dce Fix a faulty assert() in the SELECT code generator and add a test case 
to prevent regression.

FossilOrigin-Name: 1421c8ffba179d6aafa2643012f80a2738779117
 2015-05-04 16:09:34 +00:00
drh
c049057242 Cleanup of the sqlite3StrAccumInit() function. No functionality changes. 
FossilOrigin-Name: 7952c32268aa650d9ee946d5bfe190f712e3bbe6
 2015-05-02 11:45:53 +00:00
drh
1cb50c880e Alternative fix for the double-initialization of type and collating sequence 
problem that leaves the estimated table size intact.

FossilOrigin-Name: 623ddbdbf48d26dac58c593bcb9e7b184334ddfc
 2015-04-21 17:17:47 +00:00
drh
dfb5e1cbc6 Make sure the datatype and collating sequence of transients tables are 
not initialized more than once.  Otherwise a memory leak results.

FossilOrigin-Name: 9e6beda2c8d879e438ee933e658f860d6eb42a20
 2015-04-21 17:07:01 +00:00
drh
be360e1ed1 Fix a memory leak in the SELECT code generator tracing logic (code that is 
omitted in non-debugging builds).

FossilOrigin-Name: b623ebd859dcb1d99398aa9953f6b113bad26304
 2015-04-21 16:09:07 +00:00
dan
4b79bde7a2 Fix an obscure problem with "INSERT INTO tbl(cols) SELECT" statements where the SELECT is a compound with an ORDER BY and "cols" is a strict subset of tbl's columns. 
FossilOrigin-Name: 718d5d0eab045a874107e078a857226a80ab912d
 2015-04-21 15:49:04 +00:00
drh
7c052da54d Change an assert() in the aggregate query code generator into a testcase(). 
FossilOrigin-Name: d1e6bc918b0c8e0701f5e15afb91b84a9004231b
 2015-04-21 15:16:48 +00:00
drh
c50c8f4043 Remove an ALWAYS() that turns out to be false when there is a semantic 
error on a compound SELECT.

FossilOrigin-Name: ad67a67c03078a2bc65d28f2b880b29bf02067c1
 2015-04-17 16:12:03 +00:00
drh
b8289a8b00 Fix a faulty assert() in sqlite3SelectNew(). 
FossilOrigin-Name: 620d19c3b462f5c4763ebd26513321431f21dd72
 2015-04-17 15:16:58 +00:00
drh
a276e3fd4d Fix a faulty assert() in the compound-SELECT code generator. 
FossilOrigin-Name: 10715b05f2201a63dca317f99ce39d3ce182e182
 2015-04-16 16:22:27 +00:00
drh
6736618a8f Fix a faulty assert() in the compound select code generator. 
FossilOrigin-Name: 9d336be1b16aa9bd5c9e4132bb645874993c7d96
 2015-04-16 14:33:35 +00:00
drh
772460fd4c Improvements to the way VALUES clauses are parsed. 
FossilOrigin-Name: ec5a493ad27593ca78899b3001630c1898b940ff
 2015-04-16 14:13:12 +00:00
dan
5b1c07e7fb Ensure the sqlite3Select() routine always returns non-zero if an error has occurred. 
FossilOrigin-Name: b51028ed2f57f4245a7ebd9bdb99d1bcfaf1a01b
 2015-04-16 07:19:23 +00:00
drh
3dc4cc66b3 Change the multiSelectOrderBy() routine to return non-zero if there has 
been any prior error.

FossilOrigin-Name: 14784c317bff05dd0a74e2596432dfd12c139391
 2015-04-15 07:10:25 +00:00
drh
f932f7145e Fix a problem with a stale Select.pWith pointer when a CTE is used together 
with a compound query and an ORDER BY clause.

FossilOrigin-Name: 9a453f52a2b30595891604ede7d4acf61c2736a1
 2015-04-12 17:35:27 +00:00
dan
b33c50f215 Fix a problem with resolving ORDER BY clauses that feature COLLATE clauses attached to compound SELECT statements. 
FossilOrigin-Name: 427b50fba7362e5b447e79d39050f25ed2ef10af
 2015-04-04 16:43:16 +00:00
drh
8f9d0b2b25 Correctly detect the error of having a "*" wildcard on a SELECT without 
a FROM clause on the left-hand side of a recursive CTE.

FossilOrigin-Name: b11d1793a06a44931edcbf12a615b49794d53a62
 2015-03-21 03:18:22 +00:00
drh
16897072b5 Refactor some jump opcodes in the VDBE. Add JumpZeroIncr and DecrJumpZero. 
Fix the LIKE optimization to work with DESC sort order.

FossilOrigin-Name: 26cb5145bf52f8c3fffa8c69b6c24aee4d974883
 2015-03-07 00:57:37 +00:00
drh
2308ed3854 Propagate the COLLATE operator upward through function calls. 
Initial fix for ticket [ca0d20b6cdddec5e8].

FossilOrigin-Name: c053448a55f9d030e8ffe88cf4fc14ada7f6ec19
 2015-02-09 16:09:34 +00:00
drh
885a5b030e Disable the query flattener for aggregate subqueries if the parent query 
uses other subqueries in its result set or WHERE clause or ORDER BY clause.
Preliminary fix for ticket [2f7170d73bf9abf8].  However it still contains
a defect similar to the COLLATE problem of [ca0d20b6cddd].

FossilOrigin-Name: 0b7d65e3fda676d193347cb782854c28a48252af
 2015-02-09 15:21:36 +00:00
drh
17645f5eec In selecttrace 0x100 mode, show the parse tree after name resolution instead 
of before flattening, so that it is always seen even if flattening does not
occur.  Also: add the hex pointer value to the top of each SELECT tree.

FossilOrigin-Name: aa093fef2d2a7e26d987b46654963e4d7e66d444
 2015-02-09 13:42:59 +00:00
drh
0e86a1ac08 In selecttrace mode 0x100, show a complete parse-tree both before and after 
query flattening.  This is a change to debugging code only.

FossilOrigin-Name: b3c6b8a3c1075d2a87cef68f061d6a0098e6d8d0
 2015-02-09 11:54:41 +00:00
drh
2b8c5a0039 Make sure errors in the FROM clause of a SELECT cause analysis to abort 
and unwind the stack before those errors have a chance to mischief
in the "*" column-name wildcard expander. Fix for ticket [32b63d542433ca67].

FossilOrigin-Name: 9e6eae660a02303fd140dac5fbff82364f4120cd
 2015-01-22 12:00:17 +00:00
drh
fe201effbe Fix another instance of an incorrect value for KeyInfo.nXField on a 
sorting index.  Ticket [f97c4637102a3ae72b79].

FossilOrigin-Name: 0077f64510f9b9ce90032df2696cb242d097ab84
 2015-01-20 03:04:29 +00:00
drh
3f39bcf5bc Make sure that the KeyInfo.nXField value of ephermeral tables used for 
ORDER BY and GROUP BY is set correctly, so that the correct comparison
function can be choosen by sqlite3VdbeFindCompare().

FossilOrigin-Name: c16bae5e699b851f4ca8414c5dfa5370b18f69f0
 2015-01-19 20:59:34 +00:00
drh
3afd2b4d6d Avoid O(N*N) behavior with very long lists of VALUES. 
FossilOrigin-Name: ee30fb35217f3429ee89aaad7c19f29710420e4c
 2015-01-05 20:04:51 +00:00
drh
45f54a5778 Handle compound-select statements originating from VALUES clauses as a 
special case that does not use recursion.

FossilOrigin-Name: 9ce9e43af38e6bc362734463d4bfc40ff0c98f8f
 2015-01-05 19:16:42 +00:00
drh
b87fbed5a3 Remove some needless recursion from compound SELECT processing. 
FossilOrigin-Name: fe677d13f03e24fa667efc0c2e7f5bbb99521791
 2015-01-05 15:48:45 +00:00
drh
dea7d70d1b Make sure that a DISTINCT query with an ORDER BY works correctly even if 
it uses a descending index.  Fix for ticket [c5ea805691bfc4204b1cb9e].

FossilOrigin-Name: 0d3aef97ebddf422b8bdcbc5878970c6129e3f54
 2014-12-04 21:54:58 +00:00
drh
6cf4a7dfa6 Remove the OPFLAG_CLEARCACHE flag from OP_Column. In its place, change the 
P3 parameter of OP_SorterData to be the index of the pseudo-table cursor whose
record header cache is to be cleared.  This gives a small size reduction
and performance increase.

FossilOrigin-Name: 20062f49428a2349a2dd705af570c60b499a3eef
 2014-10-13 13:00:58 +00:00
drh
b08cd3f345 Improvements to the new syntax-tree output routines: Omit the "END SELECT" 
mark and instead terminate the graph at the last item.  Increase the maximum
tree depth to 100.

FossilOrigin-Name: 5ce05757aac80b99c3b2141cd301809f8e28e661
 2014-09-30 19:04:41 +00:00
drh
c90713d3d2 Show tree diagrams of data structures in the debugging output when the 0x100 
bit is set on sqlite3WhereTrace or sqlite3SelectTrace.

FossilOrigin-Name: 92e0b4bd4d75e8b000586e51a07b3e181d9af20b
 2014-09-30 13:46:49 +00:00
drh
4fa4a54f7e Remove the SQLITE_ENABLE_TREE_EXPLAIN compile-time option. Add alternative 
debugging display routines: sqlite3TreeViewExpr(), sqlite3TreeViewExprList(),
and sqlite3TreeViewSelect().

FossilOrigin-Name: 4ff51325d6b41d0c59e303b573700ec80c51d216
 2014-09-30 12:33:33 +00:00
drh
eb9b884c2d Improved ".selecttrace" output. 
FossilOrigin-Name: c0b61f7092a7fd2c5f51db26ce7a7a5c75c227fe
 2014-09-21 00:27:26 +00:00
dan
7c0a4720ca Candidate fix for [d11a6e908f]. 
FossilOrigin-Name: 89398880bcfff96e91d2a9c45774f5fb3209ffc1
 2014-09-20 20:38:48 +00:00
drh
9300adbc79 Fix the SELECTTRACE_ENABLE macro so that it doesn't cause problems for 
testfixture.  Add new SELECTTRACE() calls.

FossilOrigin-Name: f1ba68f131d2f03e4a7bc50cde23a7609d384279
 2014-09-20 20:24:49 +00:00
drh
abd4c72357 Enable SELECT query planning tracing when compiled with 
SQLITE_ENABLE_SELECTTRACE and either SQLITE_DEBUG or SQLITE_TEST.

FossilOrigin-Name: cbe0cf9ddf46f0a678c85d49bfa74e3b7712e1a1
 2014-09-20 18:18:33 +00:00
drh
9588ad95c1 Do not flatten aggregate subqueries that contain min() or max() functions 
so that if the min()/max() are discarded by the outer query, they still
function and cause non-aggregate expression to be evaluated on the minimal
or maximal row.

FossilOrigin-Name: 0bdf1a086b3946722f4d4b328e25917f61c14713
 2014-09-15 14:46:02 +00:00
drh
6092d2bcfe Adjust comments to show that subquery flattening restriction (10) was 
removed from the code back in 2005.  This is a comment change only.

FossilOrigin-Name: 4ff0eb96bc364baed2d8005c69291ca9240b99dd
 2014-09-15 11:14:50 +00:00
drh
236241aeb0 Simplify the way the column cache is managed around OP_Move instructions. 
FossilOrigin-Name: 320556233e19cdd9d590a09655c3465754700d39
 2014-09-12 17:41:30 +00:00
peter.d.reid
60ec914c74 Fix typos in comments. No code changes. 
FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
 2014-09-06 16:39:46 +00:00
drh
503ae86508 Merge recent performance enhancements from trunk onto the threads branch. 
FossilOrigin-Name: 35c44a3c73e2e8b14ff194c41986f4bdb9dfe737
 2014-08-29 14:40:07 +00:00
drh
53932ce8fa Avoid an unnecessary OP_Move operation for expression subqueries. 
FossilOrigin-Name: 462f42af52f146fd328ddcbbe78c8444ef7bd2c3
 2014-08-29 12:29:39 +00:00
drh
83b25d32d7 Merge the pre-3.8.6 changes into the threads branch. 
FossilOrigin-Name: a608fd1d52606a009c3acc7f1d184b86a7df3c82
 2014-08-14 14:02:48 +00:00
drh
fcf2a7757e Fix an assert() statement in the SELECT code generator that was 
incorrect following an OOM error.

FossilOrigin-Name: a179e41e40dba4c19a488985f77777acd27b689d
 2014-08-12 01:23:07 +00:00
drh
da2e5862d1 Merge all recent changes from trunk. 
FossilOrigin-Name: a353a8515fb2eff86042d0c33e39772f4d04e0b3
 2014-08-06 02:03:35 +00:00