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051170c4531e70f3d2ec7141970140eb9060b3a3
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308 Commits

Author SHA1 Message Date
drh
31e7147dfa Fix over-length source code lines in resolver.c. No logic changes. 
FossilOrigin-Name: c12edb85076d0832e3a0abbbba4d07f3cb5d7f0e
 2015-02-09 10:20:19 +00:00
drh
72673a24e2 If a table is the right operand of a LEFT JOIN, then any column of that 
table can be NULL even if that column as a NOT NULL constraint.
Fix for ticket [6f2222d550f5b0ee7ed].

FossilOrigin-Name: 6f6fcbe4736b9468a495c684d5eebc8bfe5c566a
 2014-12-04 16:27:17 +00:00
drh
d05ab6aacf Increase the resolution of the second parameter to the likelihood() SQL 
function (the probability value) so that it can handle probabilities
as small as 0.00000001.  Formerly, it ran out of precision at 0.001.

FossilOrigin-Name: 0f08924fe0c52a85a103f67bee9809e0f8f884b0
 2014-10-25 13:42:16 +00:00
drh
059b2d50e1 Enhance the automatic index logic so that it creates a partial index when 
doing so gives the same answer for less work.

FossilOrigin-Name: d95d0313c447f5baeabdb17284d8606331ab7d49
 2014-10-24 19:28:09 +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
peter.d.reid
60ec914c74 Fix typos in comments. No code changes. 
FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
 2014-09-06 16:39:46 +00:00
drh
ddb17cae38 Updates to evidence marks and requirements. No changes to code. 
FossilOrigin-Name: 62d38308b519a5362f559b296a0cf1acccf8f673
 2014-08-11 15:54:11 +00:00
drh
e8a537eea7 Update requirements marks. No changes to code. 
FossilOrigin-Name: 7556bd9aa5db1b9cd92d0e48effcda9fe96f3128
 2014-08-08 18:26:20 +00:00
drh
03202a97f8 Add the likely() function for symmetry with unlikely(). The likely(X) 
function means the same thing as likelihood(X,0.9375).

FossilOrigin-Name: 38965484199153e3e5b999f5196c1d66e5296f60
 2014-06-17 16:11:28 +00:00
mistachkin
9d42cc994c Fix name resolution problem in sub-selects within triggers, ticket [4ef7e3cfca]. 
FossilOrigin-Name: 5bcd0b1ca5d73ffbe7978ee9d73fe5e769e3d3a2
 2014-03-04 11:29:42 +00:00
drh
784156f84c Make sure "rowid" columns are correctly resolved in joins between normal 
tables and WITHOUT ROWID tables.  Fix for ticket [c34d0557f740c45070].

FossilOrigin-Name: 5d01426ddfb2d47c57f93f71378594e637424be0
 2014-02-12 14:43:52 +00:00
drh
bbbb0e8053 Make sure the update hook is not invoked for WITHOUT ROWID tables, as 
the documentation specifies.  This bug was found while adding requirements
marks, so a few extraneous requirements marks are included in this
check-in.

FossilOrigin-Name: 0978bac6b8aee229d7a0d148546f50d380d06a06
 2013-11-26 23:27:07 +00:00
drh
10f468f37a Remove the obsolete TK_CONST_FUNC token type. 
FossilOrigin-Name: 9b4217f055e9bced186b4c56a5753bd6da7115b5
 2013-11-21 14:44:38 +00:00
drh
b1fba2868b Add the ability to factor constant functions out of inner loops. But do 
not factor out non-constant functions, like random().

FossilOrigin-Name: 1b0f779e19a5c0d51eddd2d88db50034d77d132c
 2013-11-21 14:33:48 +00:00
drh
c2acc4e466 Changes to make the new constant expression factoring logic more general 
and more testable.

FossilOrigin-Name: d10fb49a92f5f6e93093ae83544e5aec7984361a
 2013-11-15 18:15:19 +00:00
drh
511717c645 Fix harmless compiler warnings. 
FossilOrigin-Name: 0077c0772a884b54d81fa3733aac6f0c364ef1a8
 2013-11-08 17:13:23 +00:00
drh
11f9b033cc Report an error when trying to resolve column name "rowid" in a 
WITHOUT ROWID table.

FossilOrigin-Name: 36bcc9cb885523fba2f3b0d152de9e08073668c1
 2013-10-23 17:39:41 +00:00
drh
b32652601c Fix a typo in a requirements mark comment. No changes to code. 
FossilOrigin-Name: e5a439cfa5c921187e4aa7050832ec2660fba13d
 2013-10-16 23:58:21 +00:00
drh
3432daa8b2 Additional test cases and requirements marks for the unlikely(), 
likelihood() and instr() functions.

FossilOrigin-Name: 5f01cd36ee8678a07b79f9e01855daffb6bb8c43
 2013-10-11 16:35:49 +00:00
drh
ebb6a65d16 Refactor the ExprSetIrreducible() macro into ExprSetVVAProperty(*,EP_NoReduce). 
This is a naming change only.  The logic is the same.

FossilOrigin-Name: 695aee46e9bdf15159ab52db7f522b30c91aed0f
 2013-09-12 23:42:22 +00:00
drh
a4c3c87e3d Merge in the Expr.flags expansion to 32-bits. Use an extra bit to help 
optimize the sqlite3ExprSkipCollate() routine.

FossilOrigin-Name: 4c84d1b4c20f18921dd705bf67e8225975b83e86
 2013-09-12 17:29:25 +00:00
drh
c5cd124900 Increase the number of bits available in Expr.flags. Other tweaks aimed at 
making expression processing more robust.

FossilOrigin-Name: 579a512538528cf4bb4381ba393c5d9e7310086b
 2013-09-12 16:50:49 +00:00
drh
09328c00d6 Additional unlikely() test cases. Logic tweaks to support test coverage. 
FossilOrigin-Name: 5d00cce74a7aefaf30022ae971ab1e0451e0ad6e
 2013-09-11 14:34:58 +00:00
drh
aae0f9e462 Change the name of the two-argument unlikely() function to likelihood(). 
Add test cases.

FossilOrigin-Name: 29a359b8d7f90e6fa2b28ce2a112284fd3870494
 2013-09-11 11:38:58 +00:00
drh
abfa6d52ed Tweaks to the index selection logic. 
FossilOrigin-Name: 52d52688644f635a50a60ff17b160f3affa8fa6c
 2013-09-11 03:53:22 +00:00
drh
add5ce303f Continuing refinements of the logic to take WHERE clause terms not used for 
indexing into account when computing the number of output rows from each
table.

FossilOrigin-Name: b65dc53415f42d8402d0ec7f4bedf59d7b39b486
 2013-09-07 00:29:06 +00:00
drh
fde1e6bc37 Enhance the plan solver to take into account the number of output rows when 
computing the set of paths to retain for the next cycle.

FossilOrigin-Name: 1a46a7242313da96420985fa52e1de3f84533e5b
 2013-09-06 17:45:42 +00:00
drh
cca9f3d291 Initial implementation of the unlikely() SQL function used as a hint to 
the query planner.

FossilOrigin-Name: 036fc37a034093a4c6fc190633bd41c2b7230d77
 2013-09-06 15:23:29 +00:00
drh
0af16ab2c2 Make sure that GROUP BY terms select input column names in preference to 
output column names, in compliance with the SQL standard.
Ticket [1c69be2dafc28].

FossilOrigin-Name: f2d175f975cd0be63425424ec322a98fb650019e
 2013-08-15 22:40:21 +00:00
drh
e35463b312 Bare identifiers in ORDER BY clauses bind more tightly to output column name, 
but identifiers in expressions bind more tightly to input column names.
This is a compromise between SQL92 and SQL99 behavior and is what
PostgreSQL and MS-SQL do.  Ticket [f617ea3125e9c].

FossilOrigin-Name: c78b357c00a35ed48ce2ffbc041de8d22570d1e2
 2013-08-15 20:24:27 +00:00
drh
26080d9241 Clarification and typo fixes in comments related to name resolution. 
No changes to code.

FossilOrigin-Name: f30abdf9d814d6c75bf1c803054737c737ad636f
 2013-08-15 14:27:42 +00:00
drh
1e7d43c977 Silently ignore database name qualifiers in CHECK constraints and in 
partial index WHERE clauses.

FossilOrigin-Name: 2e8c845eb5011a2743dace333aa38383588f2080
 2013-08-02 14:18:18 +00:00
drh
619a1305e7 Fill out an initial implementation of the sqlite3ExprImpliesExpr() function. 
FossilOrigin-Name: 8e07aa2ad5579aeb82174ce5bd432ddb9c058bc1
 2013-08-01 13:04:46 +00:00
drh
3780be115a Resolve names in CREATE INDEX WHERE clauses and detect errors. Disallow 
expressions that contain variables, subqueries, or functions.
The expression is still not used for anything, however.
still unused.

FossilOrigin-Name: f2aa7842c8b9df24294f09e2bde27b3f08c455c7
 2013-07-31 19:05:22 +00:00
drh
58a450c041 Treat identifiers in the HAVING clause the same as in the WHERE clause. 
Only consider AS names from the result set to match if there are no other
matches.  Continuation of the fix for [2500cdb9be05].  This check-in
fixes a bug found by [http://www.sqlite.org/sqllogictest/ | SqlLogicTest]
during release testing for version 3.7.17.

FossilOrigin-Name: 9ffff3d05226bbd01a0745dd0a511776358253c0
 2013-05-16 01:02:45 +00:00
drh
aa87f9a68b Make sure the affinity and datatype of sub-subqueries are initialized 
prior to subqueries as the latter relies on the former.

FossilOrigin-Name: 39b4e6ff9316cc78ea88349091e195b8104d1e9e
 2013-04-25 00:57:10 +00:00
drh
a3a5bd9b62 Only consider AS names from the result set as candidates for resolving 
identifiers in the WHERE clause if there are no other matches.  In the
ORDER BY clause, AS names take priority over any column names.
Candidate fix for ticket [2500cdb9be].

FossilOrigin-Name: ad53924dcadffb95c6497c46c228c67e8f5370e4
 2013-04-13 19:59:58 +00:00
drh
dd1dd489d9 When comparing names during name resolution, make sure the names match 
exactly and that one name isn't merely a prefix of the other.
Fix for ticket [7a31705a7e6c95d51].

FossilOrigin-Name: c2d5a23b1ab39918e97c596cf75c42f86a5fe2b7
 2013-02-26 12:57:42 +00:00
drh
928d9c6209 Fix harmless compiler warnings. 
FossilOrigin-Name: 4a7b4ee011fea911b981206c242e3d5553303b52
 2013-02-07 09:33:56 +00:00
drh
ddd1fc7283 Do not raise an error if an unknown SQL function is found in a CHECK 
constraint while parsing the schema of an existing database.

FossilOrigin-Name: cda790280a52d65f98a45bacb9123367b159ac7c
 2013-01-08 12:48:10 +00:00
drh
38b384a032 Further corner-case fixes to the name resolution logic. 
FossilOrigin-Name: 20730bad7082b559a65e8cfedb31b6afca50df58
 2013-01-03 17:34:28 +00:00
drh
c75e09c761 Remove an incorrect assert() statement (ticket [beba9cae6345a]). Fix other 
minor problems in the name resolution logic.

FossilOrigin-Name: afe96a118c8a9627819ba5960aa83a607e734087
 2013-01-03 16:54:20 +00:00
drh
3e3f1a5b49 Now supports result sets of the form "TABLE.*" with nested FROM clauses. 
FossilOrigin-Name: 4cf5ed7ea198abc32f8118e79490e77f847f08c1
 2013-01-03 00:45:56 +00:00
drh
8f25d18b21 Better resolution of table and column names in joins where some of the 
terms of the FROM clause are parenthesized.

FossilOrigin-Name: 7344e791b9456286ecdca6d45f2f5260fb3f10e2
 2012-12-19 02:36:45 +00:00
drh
92689d2869 Resolve names in FROM-clause subqueries prior to resolving names in the 
result set expressions of a SELECT statement.

FossilOrigin-Name: 9b67c633d932f3e566f521ee6a9cf3be193436fa
 2012-12-18 16:07:08 +00:00
drh
85d641f948 Improved error messages when column integers in an ORDER BY clause are 
out of range.

FossilOrigin-Name: bd960d937f8d6521c8ec4b7bd8a77a498dd432d4
 2012-12-07 23:23:53 +00:00
drh
953f7611da Fix a long-standing issue with the distinct-as-aggregate optimization that 
only expressed when the new collating-sequence logic is turned on.

FossilOrigin-Name: 0aaf52a339808386984c30cca0c0c35ac2e70e7e
 2012-12-07 22:18:54 +00:00
drh
bd13d34b08 Fix the processing of ORDER BY clauses with COLLATE terms on compound 
queries.  52 veryquick test failures remain.

FossilOrigin-Name: 49654453ad157693414c1f86fa3afa0918acffd4
 2012-12-07 21:02:47 +00:00
drh
0a8a406e9b Some errors in veryquick resolved. Many more to go. 
FossilOrigin-Name: 972443b4eb282d45507da06c75e2cd46dd72326b
 2012-12-07 18:38:16 +00:00
drh
4b17cf5855 Veryquick now row to completion without segfaulting or asserting. But there 
are still lots of errors.

FossilOrigin-Name: 7fafab12e4c0c832c421975f8329c3214403d281
 2012-12-07 14:02:14 +00:00