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Code Activity
22,813 Commits 1,607 Branches 185 Tags
3d8c92d041b380f66dc753ee38aaeb3b87d559cb
Commit Graph

2319 Commits

Author SHA1 Message Date
dan
07e9523364 Rename internal function sqlite3RenameToken() to sqlite3RenameTokenMap() and 
sqlite3MoveRenameToken() to sqlite3RenameTokenRemap().

FossilOrigin-Name: b9ae9a0a188b82d7066f6ef7d21592889df0a61559e9a0e01819e9d5a92c3f36
 2018-08-21 16:32:53 +00:00
dan
d145e5f46f Minor changes to function tokenExpr() in order to claw back cycles lost to the 
rename-column change.

FossilOrigin-Name: 479976955ecb27c3e77a280187eaf23722178549e072b34f3183354a27a4e5c3
 2018-08-21 08:29:48 +00:00
drh
38d9964a73 Additional fixes for harmless compiler warnings that are specific to this 
branch.

FossilOrigin-Name: 9d8e73bf71e996b810959ffc0e60de69b5e8ca3301df52f9c35d5e9075921798
 2018-08-18 18:27:18 +00:00
dan
5be60c55e8 (no comment) 
FossilOrigin-Name: e272dc2b1c0edab59a40f32c77c81a3e636937280524161eff5669cb0046ad84
 2018-08-15 20:28:39 +00:00
dan
987db767d2 Have ALTER TABLE RENAME edit column references in CREATE VIEW statements. 
FossilOrigin-Name: db829dc1a2d7afa49798a2fd32d1f070185b23e513416e65d8144fda24f23b50
 2018-08-14 20:18:50 +00:00
dan
5496d6a25a Edit the WHEN and UPDATE OF clauses of trigger programs as part of ALTER TABLE 
RENAME COLUMN.

FossilOrigin-Name: 5fdb6b0aafba727139e1937ef5950e4434a77f95a10fc46f8010ca2de3922326
 2018-08-13 17:14:26 +00:00
drh
4a2c747c4c Fix legacy comments on Token. Begin commenting the new ALTER TABLE RENAME 
COLUMN code.  Fix a memory leak in the sqlite_rename_column() SQL function.

FossilOrigin-Name: 32edc8920376aabb84ebe1900eaa9512d23f1b44d6459e4916dc6b07db66e27c
 2018-08-13 15:09:48 +00:00
dan
e325ffed04 Reload the entire schema after renaming a column in order to ensure that the 
schema for any tables for which parent key definitions were changed are
reloaded.

FossilOrigin-Name: f4497b0136e9fcb1121a834c86f84eeaf8f1e7d3157d409484e086bcef3487f1
 2018-08-11 13:40:20 +00:00
dan
cf8f289542 Experimental implementation of ALTER TABLE ... RENAME COLUMN. Still buggy. 
FossilOrigin-Name: fa0fc01eb48a864f0a3d43f9b805d5ed2e530846ee0c34fcbc2eabd9e5696277
 2018-08-09 20:47:01 +00:00
drh
36a5d88dde Fix comments that were made obsolete by the removal of the column cache. 
FossilOrigin-Name: 2041231d56c7b02b785015ef4d1af260d61326eab1b2a304c17faa3e33f76441
 2018-08-04 17:15:56 +00:00
drh
c6ed275fcb Remove more column-cache residue: The OP_SetColTab and OP_VerifyColTab 
opcodes and the associated SQLITE_DEBUG_COLUMNCACHE logic.

FossilOrigin-Name: 80236e81cefdf3d3cda3dbdb6de1575c38e4e248cc4b72ca9ee96d3aa0464bfd
 2018-08-04 16:54:53 +00:00
drh
8c60719132 Further logic simplifications that flow out of the omission of the column cache. 
FossilOrigin-Name: 7d9072b027cc28dd8ecf5e2686d821017997445c15124eebe2839984622af4db
 2018-08-04 15:53:55 +00:00
drh
38ee2d9197 Remove additional traces of the column cache. 
FossilOrigin-Name: db6052e9725368736abd19f14f97376582d35d07f543046d39991d767ed29851
 2018-08-04 14:30:21 +00:00
drh
02ceed058a Completely remove the column cache logic, which has been a persistent source 
of bugs for many years.  We recent enhancements to the performance of the
OP_Column opcode, the removing the column cache actually makes speed-check.sh
run faster.  It also saves about 1,800 bytes of code space.

FossilOrigin-Name: 3f5f60cd7529330209027fdae8129cca420cec1050eae50a7750d0b715b56972
 2018-08-03 23:04:16 +00:00
drh
954733b386 Improvements to the parser to increase coverage. Fix the parser so that 
at least one expresssion is required after PARTITION BY and within the
list of expressions on VALUES().

FossilOrigin-Name: 02204f8b246c868846f39bd44f2e3bc0fab0275aa09ef3a0e5a8e3d58f484ca8
 2018-07-27 23:33:16 +00:00
drh
efad2e2366 Constant propagation is now restricted to just the WHERE clause. The 
mechanism is changed to take affinity and collation into account.  This
seems to give correct answers.  But the search for constant propagation
costs 4 million cycles in the speed test.

FossilOrigin-Name: 82c67efb723dba387964f690cd459b420e59e3367d9589016597a76531596391
 2018-07-27 16:57:11 +00:00
drh
660ee55663 Initial implementation of the WHERE-clause constant propagation optimization. 
FossilOrigin-Name: 2fb82ad8ebb6434438c0d235b1239444fb08c8711cea2c5a9ed955fedd0acdec
 2018-07-26 21:16:53 +00:00
drh
ba968dbfe7 Do not abort running queries due to a CREATE INDEX statement. Allow them 
to run to completion before being reprepared.  Fix for ticket
[c694113e50321afdf9].

FossilOrigin-Name: 2bd593332da0aade467e7a4ee89e966aa6302f37540a2c5e23671f98a6cb599c
 2018-07-24 22:02:12 +00:00
dan
e882551935 Add a test-control to disable the skip-scan optimization. 
FossilOrigin-Name: 650a3fe03d61068e06f3097878a777ca8ed713a769444cdb3f8be7d1e19a0b83
 2018-07-12 19:14:39 +00:00
drh
b0225bc52d Minor comment changes. Add ALWAYS() macros on some unreachable branches 
in the xStep() methods of built-in window functions.

FossilOrigin-Name: f2057542cf6860badb4ae6b1a0df94a78d5b2661dabf16f5705b3f8236521bea
 2018-07-10 20:50:27 +00:00
drh
fef37760da Identify Select objects within a single statement using small sequential 
integers rather than "0x%p".  This is more readable and yields the same result
on successive runs.

FossilOrigin-Name: a7cdc5bc85e0edfcc38f920c2ce91599bcbfdb49522d88b08c64596546d13881
 2018-07-10 19:48:35 +00:00
drh
7083a487ad Enhancements and improved documentation to the byte-code branch coverage 
testing logic.  Provide new macros that allow the code to specify that
some branch instructions can never take the NULL path and that the OP_Jump
opcode is only interested in equal/not-equal.  The
SQLITE_TESTCTRL_VDBE_COVERAGE file control callback now works slightly
differently (it provides the callback with a bitmask of the branch action,
rather than an integer).

FossilOrigin-Name: cd2da7e1ba4e78e68ccf65d4969df963c1e3085930e74419450bda2799381e05
 2018-07-10 16:04:04 +00:00
drh
a1fd4b520b Enhance the TreeView mechanism so that it shows the window function 
data structures as part of the abstract syntax tree.

FossilOrigin-Name: a2c0e1bec0d8a6f982572c4c5a8166319b8db0fe586057f7900f0ab72af6554e
 2018-07-10 06:32:53 +00:00
dan
59ff42516c Instead of using a lemon %fallback directive, have the tokenizer try to figure 
out whether an instance of "WINDOW" should be TK_WINDOW or TK_ID.

FossilOrigin-Name: 022079cb0d67be5ac0a50dd9a4d41ee55ce8df681ecd0a544170d75fc8649978
 2018-06-29 17:44:52 +00:00
dan
67a9b8eded Omit all window-function related code when building with SQLITE_OMIT_WINDOWFUNC. 
FossilOrigin-Name: 5f04b016467342b5a796bf702ed25b621eb86f2961c1e703d276c93f2cb6aa89
 2018-06-22 20:51:35 +00:00
dan
6fb2b54ceb Fix a problem with using min() or max() as a window function. 
FossilOrigin-Name: 801074ce63d3f4825cc9fa508c42629a9f74e7f9e35c5f238343bb1cff4fbae1
 2018-06-19 17:13:11 +00:00
dan
c95f38d456 Fix problems with using window functions in CREATE VIEW statements. 
FossilOrigin-Name: 943bccd2a6bd4cf3e0534c1fa46885bfa2ba7b780ddcdff9f1ea4cbb3f04e786
 2018-06-18 20:34:43 +00:00
dan
660af939b0 Add new API function sqlite3_create_window_function(), for creating new 
aggregate window functions.

FossilOrigin-Name: da03fb4318fd2613ec5c5b109a3974ac1120c19ed16bed4ca85bbdc4b35c998c
 2018-06-18 16:55:22 +00:00
dan
9a94722d48 Fix problem with window functions min() and max() when used with a PARTITION 
clause and a frame starting point other than "UNBOUNDED PRECEDING".

FossilOrigin-Name: 43eb1e75a4d7ac0973ed8589bbaf379c24cdc8eacc4e613610d2d4c24d385dc1
 2018-06-14 19:06:36 +00:00
dan
09882a75c4 Merge latest trunk changes into this branch. 
FossilOrigin-Name: 5cf5f1808a51f9c2cfc98dd49b4f1ce860b53e935287f89868ce2fdbace8eb06
 2018-06-14 14:30:51 +00:00
dan
2a11bb23eb Clarify the relationship between a Window object and its associated Expr. 
FossilOrigin-Name: 0cd55e98a478740032f5569ddc00fa5b0e063e90db6e00ac7598c9b7c2fffeee
 2018-06-11 20:50:25 +00:00
drh
299bf7c2f0 Add the OP_SetTabCol and OP_VerifyTabCol opcodes, only when compiling with 
SQLITE_DEBUG, to do run-time verification of the column cache.

FossilOrigin-Name: b37614a3670770919a7c7f8157c5fd6578d736447998640b52e5cef8174cadc2
 2018-06-11 17:35:02 +00:00
dan
96f55d0fa5 Merge recent trunk changes with this branch. 
FossilOrigin-Name: c71f23590c25b4cecd27722e6c0fc8e3bf320d399c7d9398b7016dd5cf5b05eb
 2018-06-09 18:09:44 +00:00
drh
1fe3ac7347 Compute the bitmask of indexed columns for each index once when the Index 
objecct is constructed, instead of recomputing it every time it is needed.

FossilOrigin-Name: d735872ec383bbd220b08c61d25db9ff3675d2542b9e7867e7d6323a12e0cc23
 2018-06-09 01:12:08 +00:00
dan
e3bf632cc2 Add support for the WINDOW clause. 
FossilOrigin-Name: 19c983b511f1c823fdfb051713681b4c779f02fa83b41189afca0a9b8b72048d
 2018-06-08 20:58:27 +00:00
dan
dacf1de95c Do not flatten sub-queries that contain window functions. 
FossilOrigin-Name: 236cb75bd1f0d5eb86aa5f52d8d548e7263c34633833dcea9dfc934f142113b8
 2018-06-08 16:11:55 +00:00
dan
03854d2ecc Fixes to allow group_concat() to be used as a window function. 
FossilOrigin-Name: 89bbc9ba8f66853a7530453f146c9df1baacd8558468016cefa7602911f7578a
 2018-06-08 11:45:28 +00:00
dan
2b1287cf44 Merge latest trunk changes into this branch. 
FossilOrigin-Name: 83d6416a868fac81a78c9507185a48d00920e4322276245e285946f760915f4a
 2018-06-04 08:28:18 +00:00
dan
dfa552f45b Add support for window functions row_number(), rank(), dense_rank() and 
percent_rank().

FossilOrigin-Name: 91c1cb7a217d0991a08256269f6c55ef185c25362d57b36bfbd2d85dab38e58f
 2018-06-02 21:04:28 +00:00
dan
c9a8668ac7 Allow min() and max() to be used as window functions. 
FossilOrigin-Name: c16125a884a9131b707ac20033968c4c3177ea79625a15efb64d754568c6c7a0
 2018-05-30 20:44:58 +00:00
drh
9201184711 Store application-defined function names as lower-case to avoid the need 
for case conversions before calling xFindFunction on virtual tables.
Avoid using lookaside to store the destructors for application defined
functions, as lookaside should be reserved for transient allocations.

FossilOrigin-Name: 777189ce88799f93f393fd14fd716111c85bcdcb23690fd561f78ea2bd2ce5da
 2018-05-26 16:00:26 +00:00
dan
c3a20c19a8 Add support for "ROWS BETWEEN <expr> PRECEDING AND <expr> FOLLOWING" window 
frames.

FossilOrigin-Name: 3a203660f1e4da3b8d2d605c494f4843f6e00752f28042b49e11d7d6550dd406
 2018-05-23 20:55:37 +00:00
dan
f9eae18b56 Begin adding support for more esoteric window frames. 
FossilOrigin-Name: bc4b81d60d40583de0f929730159011c1a7696802532ebd02220de3ace94a60d
 2018-05-21 19:45:11 +00:00
dan
e2f781b9d1 Evaluate multiple window functions in a single pass if they use the same 
window definition. Add xValue callbacks for other built-in aggregate
functions.

FossilOrigin-Name: c9f0f140941660ff368e5bb5752d54feb1964b7a9eac986d4bfb8f24a1c20d86
 2018-05-17 19:24:08 +00:00
dan
86fb6e1738 Start of experimental implementation of SQL window functions. Does not yet 
work.

FossilOrigin-Name: 3781e520854808fe02ad3fe77dd11fc917448c58ff1fd79123289dd91937decd
 2018-05-16 20:58:07 +00:00
drh
0cdbe1aee0 Make the internal dynamic string interface available to extensions using 
the new sqlite3_str object and its associated methods.  This is mostly just
a renaming of internal objects and methods to use external names, through
there are a few small wrapper functions.

FossilOrigin-Name: 87f261f0cb800b06ad786f6df16f2c4dddd0d93dfdcc77b4a4eaa22920b56bf1
 2018-05-09 13:46:26 +00:00
drh
4388522561 In ORDER BY LIMIT queries, try to evaluate the ORDER BY terms first, and it 
it becomes clear that the row will not come in under the LIMIT, then skip
evaluation of the other columns.

FossilOrigin-Name: c381f0ea57002a264fd958b28e4921cb9c9e73a10fb592f6bb64e6bc9bd16d39
 2018-05-03 23:20:06 +00:00
drh
4d79983ca5 Optimizations to the new EQP framework. 
FossilOrigin-Name: 956fef361a795bd081d8e23ce4075dc8aafcee63ab7275d13b657b529d185b30
 2018-05-03 19:47:14 +00:00
drh
03c3905f94 Fix a dangling-else problem that was causing recursive CTEs to malfunction. 
Begin fixing test cases to work with the new EQP output.

FossilOrigin-Name: 82ca44b82fed6814c84440ba8bfaa019488ab956e84ac165180e2fcece6facb2
 2018-05-02 14:24:34 +00:00
drh
e2ca99c907 Begin reengineering the EXPLAIN QUERY PLAN function to provide more 
intuitive output.

FossilOrigin-Name: 70b48a7972dfbb44af3ccd8ccd830e984bec88d80a78b3566a5de86a16e7fc14
 2018-05-02 00:33:43 +00:00