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239 Commits

Author SHA1 Message Date
drh
80738d9c3e Improvements to the application-defined function mechanism so that it is 
more compact and runs faster, especially when the application defines
thousands of new SQL functions.

FossilOrigin-Name: 3201fbcc5105d23132e6b8b7ac825e66af4f8a39
 2016-02-15 00:34:16 +00:00
drh
9bfb024de0 Remove an unnecessary memset() from the symbol name resolver. 
FossilOrigin-Name: da527ddae06460ab4b706cdb871de2188ebaf5ac
 2016-01-20 02:21:50 +00:00
drh
2d80151f32 Combine the xFunc and xStep pointers of the FuncDef object into a single 
pointer xSFunc.

FossilOrigin-Name: 0d1b3d7d3ca66cb0b97493f1aeade1703af3c9f4
 2016-01-14 22:19:58 +00:00
drh
15427279c8 Fix typos in requirements text and update requirements marks. No changes 
to code.

FossilOrigin-Name: 8534a46c06601ad35b97caee442371f24c718d0f
 2015-12-03 22:33:55 +00:00
drh
202923107d Do not allow table-valued function syntax on ordinary tables and views as those 
objects are not table-valued functions.
Fix for ticket [73eba7ba5c7c0fc].

FossilOrigin-Name: ff5716b89f99d9c4568a39f1f52524528a631623
 2015-11-21 13:24:46 +00:00
drh
4cbc54b042 Do not allow rowid in a UNIQUE or PRIMARY KEY constraint. (This restores the 
same behavior exhibited by all prior releases.)

FossilOrigin-Name: b1278301e37220a075c1bae88c0fcca2ef7a7d5c
 2015-09-19 03:07:30 +00:00
drh
0b8d255c37 Omit all use of Expr nodes for TK_AS, as those nodes no longer served a useful 
purpose and in fact interferred with the query planner.

FossilOrigin-Name: 7ab0b258eabfcfb7f1b0bd1b12e166d2f267823d
 2015-09-05 22:36:07 +00:00
drh
a7f910b549 Rename SQLITE_FUNC_VARYING to SQLITE_FUNC_SLOCHNG - a more descriptive name 
for what that bit means.

FossilOrigin-Name: ff5137a6dd8cb2a9b629b3a244f52665e9c9ebce
 2015-09-01 13:17:17 +00:00
drh
03bf26d90d Not only date/time functions, but also functions like sqlite_version() and 
changes() need to be prohibited from use inside of indexes.

FossilOrigin-Name: 487131303980f15dd5e1b6695b4f29efda229eb8
 2015-08-31 21:16:36 +00:00
drh
1d85e405e6 Make the distinction between truly deterministic functions and date/time 
functions which only return the same answer for a single query.  Only truly
deterministic functions are allowed in indexes.  Add new expression index
test cases.

FossilOrigin-Name: c77554b5c42327106a7b90334e9cc3c07b007c76
 2015-08-31 17:34:41 +00:00
drh
e14796085a Merge enhancements from trunk. 
FossilOrigin-Name: ec6ddb3d481d005c304a26c948c9c808586750e9
 2015-08-26 18:04:23 +00:00
drh
5579d59fb3 Evaluate expressions only once when the same expression is used in both the 
result set and in the ORDER BY clause.

FossilOrigin-Name: c2f3bbad778504681b39ab9399a1eb3c1a35ab3f
 2015-08-26 14:01:41 +00:00
drh
1f9ca2c84c Add code to maintain indexes with expression arguments across DELETE, INSERT, 
and UPDATE statements.  Legacy tests pass, but the new code paths are still
largely untested.  The query planner currently makes no effort to use
expression indexes.

FossilOrigin-Name: efaabdb71626bdc03768e87e186c72f6f3da75b2
 2015-08-25 16:57:52 +00:00
drh
a514b8eb0c Changes toward being abld to process indexes on expressions. Not there yet - 
this check-in is just movement in that direction.  Some tests are failing.

FossilOrigin-Name: 0ad0f8d77d8f95ca2ffb7745d18219f5e87dc89c
 2015-08-25 00:27:06 +00:00
drh
fea870be38 Remove some redundant code: Call sqlite3ResolveExprListNames() rather than 
calling sqlite3ResolveExprNames() in a loop - in two places.

FossilOrigin-Name: bdaf66465b6b1bdad10c08d9527b98e7000a41e4
 2015-08-24 20:54:06 +00:00
drh
c743579e59 Fix a couple C99-isms that cause compile errors on MSVC. 
FossilOrigin-Name: bc577fe6cbbe5385d81d6fa0f3c34bb1c833f0d6
 2015-08-20 23:28:18 +00:00
drh
d8b1bfc6bf Fix corner-case memory management issues in table-valued functions. Change 
virtual table handling so that if xDestroy is missing the table is
eponymous only even if xCreate is present.

FossilOrigin-Name: 774e6a14b124bbae4da0e188b62aee9ffb8c3745
 2015-08-20 23:21:34 +00:00
drh
d10dbad5e1 Correctly handle empty function argument lists on table-valued functions. 
FossilOrigin-Name: a7acc7878b8bb8e27a0da67b2dbb7bd51df4859b
 2015-08-20 20:13:37 +00:00
drh
01d230ce05 A list of arguments following a table name translates into equality 
constraints against hidden columns in that table.

FossilOrigin-Name: 40e12cfe4c29475417ba89fb637b4c763cf74016
 2015-08-19 17:11:37 +00:00
drh
8a48b9c0b1 Minor refactor of the SrcList object so that it is able to hold the argument 
list to a table-valued-function in the FROM clause.

FossilOrigin-Name: b919376147597c4b73421abe5788f893baf1560b
 2015-08-19 15:20:00 +00:00
dan
923cadb1ae Test that the left and right sides of a compound SELECT operator have the same number of expressions in the expanded expression list before beginning to generate code. 
FossilOrigin-Name: 4df852ce26c95d5d23c83dbe9c59d2c3435acddf
 2015-06-23 12:19:55 +00:00
drh
fccda8a162 CTEs have never add working rowids. So disallow the use of the "rowid" column 
within CTEs.

FossilOrigin-Name: 0055df0445932a43e42b318ef88672dcbe312c3a
 2015-05-27 13:06:55 +00:00
drh
9b40e474ef Remove a faulty assert() statement. 
FossilOrigin-Name: 5f2539da8cb9df99029ab4ab7023804722697673
 2015-05-07 00:09:29 +00:00
drh
41148f83c4 Fix a faulty assert() in the "AS" alias resolution logic of the parser. 
FossilOrigin-Name: b5e43602833249aa4b73337bf85b7f308450dab6
 2015-04-23 13:37:05 +00:00
drh
7693c42f1a In the expression-tree comparison routine, do not compiler Expr.iColumn 
and Expr.iTable for TK_STRING expressions.

FossilOrigin-Name: b67bb16c72c3e015ea82665ada9b5d3289ef6fb2
 2015-04-17 19:41:37 +00:00
drh
7b4da150da Always resolve symbols in all ORDER BY clauses of a compound-SELECT, even 
illegal ORDER BY clauses.

FossilOrigin-Name: 6c39ef73d5899eabdb46db50c2b00c2d8381a41a
 2015-04-17 18:52:37 +00:00
drh
a43f02efc6 Fix a faulty assert() statement in the name resolver associated with the 
optimization that converts compound selects with ORDER BY COLLATE into
subqueries.

FossilOrigin-Name: c72324ef9243946550ae3d974826502b1cc5eb10
 2015-04-15 06:45:13 +00:00
drh
6456b7710c Correctly handle COLLATE operators applied to COLLATE operators in an 
ORDER BY clause.

FossilOrigin-Name: 9e1f837b08facbc7a2b6196770599a58233e725c
 2015-04-15 05:57:50 +00:00
drh
0ec68f845c When doing the (dubious) conversion of double-quoted identifier into string 
literal for MySQL compatibility, be sure to also clear the iTable value from
the Expr entry to avoid an assert.

FossilOrigin-Name: d7211b68107ea669de39e0aa81a1be40901e1487
 2015-04-15 04:51:28 +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
63f845734e Rename the internal "EP_Constant" bitmask to a less misleading "EP_ConstFunc". 
FossilOrigin-Name: 4ef7ceced2b0000d21f7f8014384c04a0e4661d3
 2015-02-09 14:07:07 +00:00
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