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25,093 Commits 1,607 Branches 185 Tags
cbef156d936d57bf9a5dd60e02156fcdf0996987
Commit Graph

199 Commits

Author SHA1 Message Date
dan
e5166e070a Revert the OP_MustBeInt opcode implementation on this branch so that it again matches trunk. The extra functionality is no longer required. 
FossilOrigin-Name: c02f77b1b4d025d4243f883d6f3a2b3abcaf4944e0209f641b62c576415343dc
 2019-03-19 11:56:39 +00:00
dan
0525b6f47f Add further tests for new window function functionality. 
FossilOrigin-Name: 1fbddf01b1c3fff95b05e2f2f709754e2b514296060b4846518791e7161d9ddb
 2019-03-18 21:19:40 +00:00
dan
108e6b2c87 Always evaluate window functions using the alternative path usually only used by EXCLUDE frames if the SQLITE_QueryFlattener test flag is set. 
FossilOrigin-Name: 2879a691aca9304aea5acb46bab8e82bb2e08eb54201f3679d60bfc0e8383845
 2019-03-18 18:55:35 +00:00
dan
bdabe742da Fixes for RANGE windows and NULL values. 
FossilOrigin-Name: 723c84be3ec5ae941b7abd2442cdb76ca3bd76a5ce2d830b0e648c6e1424885a
 2019-03-18 16:51:24 +00:00
dan
1e7cb19be3 Fix problems with RANGE windows and string, blob and NULL values. 
FossilOrigin-Name: cebe09e11cc91d9776f259dd9b87e9c760a460f53ba6fa36481dfe58f77ad417
 2019-03-16 20:29:54 +00:00
dan
bf84515a2b In order to identify the first row of each partition, check if the rowid in the ephemeral table is 1 instead of using a dedicated flag register. 
FossilOrigin-Name: f2d5f7a24c7aa483c579706c5bd7268a74da6d53025d78fa8642908c2aed1707
 2019-03-16 10:15:24 +00:00
dan
c782a81aa5 Implement the EXCLUDE clause for window frames. 
FossilOrigin-Name: 9b43c3ee2e054b05715573f4f3893b84aabc5100832333c9a0f2a1628552a978
 2019-03-15 20:46:19 +00:00
dan
d35300f9b6 Parse EXCLUDE clauses in window frames. They do not yet work. 
FossilOrigin-Name: d03c7533a1e993f1b12392a5193b2127484307b27072236a1255e7a30849a381
 2019-03-14 20:53:21 +00:00
dan
a0f6b83300 Add things to this branch that will be required to support the EXCLUDE clause. 
FossilOrigin-Name: 7d66cd2013206ebad50c7cdb7dab9211fa8b47f5cb7067dcb314b3e0180875f8
 2019-03-14 16:36:20 +00:00
dan
b6f2deac3c Avoid allocating excessive registers for the PARTITION BY expressions when processing window functions. 
FossilOrigin-Name: 180be266238e18c01f8bd52c75dd9aa3e26e553620258141cd95189a0ae59ddb
 2019-03-13 17:20:27 +00:00
dan
b560a7194d Remove rows from the ephemeral table used by window functions once they are no longer required. 
FossilOrigin-Name: 6ad553192051eaa0c6d929baacde2de07b93c6d09de861028bbce55a2c9bfdd3
 2019-03-13 15:29:14 +00:00
dan
d446165f7d Minor optimization in sqlite3WindowCodeStep(). 
FossilOrigin-Name: b1322ffb6e63a110998068bf4f0a903028bd4fc0464ae1e517d745fb46423f39
 2019-03-13 08:28:51 +00:00
dan
bb40727857 Allow real values to be used in PRECEDING and FOLLOWING expressions for RANGE window frames. 
FossilOrigin-Name: 25ff7091cb12c63b1864ce68a9151f8432af5804b5ae905a2175761ab4b9fdd8
 2019-03-12 18:28:51 +00:00
dan
935d9d8260 Expand on header comment for sqlite3WindowCodeStep(). Further simplify the implementation of the same. 
FossilOrigin-Name: 5129bcc996b3c9f78ab6b674a4364787e7b353b90f15f027cad4431012022c30
 2019-03-12 15:21:51 +00:00
dan
cc7a850f2e Remove "cache mode" from the window frame code generator. Handle the same cases by editing the window frame specification itself. 
FossilOrigin-Name: 081263538332bb9c07e62630629007ccbba31bef5dc890f60b4ba58a355f70ac
 2019-03-11 19:50:54 +00:00
dan
a786e453a4 Simplify the windows frame code some. Add a comment explaining some of the VM code generated by sqlite3WindowCodeStep(). 
FossilOrigin-Name: 6bd1a07949ff3d394056bfcc813444401ef00806e3f0e0423ff6962541e84bdb
 2019-03-11 18:17:04 +00:00
dan
71fddaf195 Fix problems with "RANGE ... ORDER BY <expr> DESC" window frames. 
FossilOrigin-Name: e7bced731aa071c95bc398cdecd53c939841bf0c52fbcd06e47ba68f8c5cc35a
 2019-03-11 11:12:34 +00:00
dan
72b9fdcf20 Add support for RANGE window frames. Some cases still do not work. 
FossilOrigin-Name: ffc32b246d92d53c66094afe11950b53ffab6a1c230c602eebbfedafb2eb57f4
 2019-03-09 20:49:17 +00:00
dan
6c75b39614 Finish consolidation of window frame code. Add untested support for GROUPS frames. 
FossilOrigin-Name: 954bf369935083c188c3b14e77ed89fc5ec4323cc5b0c67e4a2e48fcc278df45
 2019-03-08 20:02:52 +00:00
dan
54975cdff9 Fix other "ROWS BETWEEN" cases on this branch. 
FossilOrigin-Name: a5f68f66472610b5beb4fe28669fbbfe83a32742be73cecad9b2ae28f8a17b30
 2019-03-07 20:47:46 +00:00
dan
c813750b7b Modify new window functions function so that cursors are stepped immediately after each operation, instead of immediately before. 
FossilOrigin-Name: 093d2b25f1b656bba57d665aac68109436861b157a5769432b612176dae3f6eb
 2019-03-07 19:26:17 +00:00
dan
00267b8a7b Simplify the window function code generator some more. 
FossilOrigin-Name: 45cbd3b4498cea8856f189e9d0a192556d4f15212055b8328a1beca6083fc47a
 2019-03-06 21:04:11 +00:00
dan
b33487b0b6 Improvements to the way built-in window functions are handled. 
FossilOrigin-Name: e8eee566dfca6f4c8af074731dfe91f7fbcd9ca72f0303235b52e4e2e80d5b71
 2019-03-06 17:12:32 +00:00
dan
b25a214dec Extend windowCodeStep() to handle any ROWS PRECEDING/FOLLOWING frame specification. 
FossilOrigin-Name: af0ea1363548461b2aad8fd54ee3f2f616111dcae2d6480f5294da44c87a0a5d
 2019-03-05 19:29:36 +00:00
dan
680f6e8e2e Support some "ROWS BETWEEN N PRECEDING AND M FOLLOWING" window functions without caching entire partitions. 
FossilOrigin-Name: e7a91f12282afb5d5d7d78397a11d18e0268ee0c931d85e21fce00d13929494e
 2019-03-04 21:07:11 +00:00
dan
e7c9ca41b2 Add support for chaining of WINDOW definitions. 
FossilOrigin-Name: c155125fd5dddb438c09d40f5137c47d88defb7a6ede4261f09d7bdaad250d37
 2019-02-16 17:27:51 +00:00
drh
211a0857b9 Window functions that can abort should indicate this, so that if they are 
used in DML statement, a statement journal will be used.

FossilOrigin-Name: 0ea05a0eb96acb860d8af2e788e29a5ae3b161e7892ab62f1ff2f3e722c0dcb6
 2019-01-27 02:41:34 +00:00
drh
29c992cb04 Revamp the SrcList allocator routines to be methods of Parse instead of 
being methods of the "sqlite3" object, so that they can leave better error
messages when the SrcList object grows too large.

FossilOrigin-Name: df08d472b090b212fb77ce2aae0e1ffe79ae5db4b1accf55e6fdb18e8b0a7098
 2019-01-17 15:40:41 +00:00
dan
fb8ac325d7 Avoid a dangling pointer comparison when renaming a table that has a trigger 
that itself contains a window function with an (illegal) column reference in a
FOLLOWING expression.

FossilOrigin-Name: d45bee36f2c1091a2d32c16ca8921bf4e7c9e40c46d0a36fbcb179ecfafcfbf0
 2019-01-16 12:05:22 +00:00
drh
ec4ccdbcb1 A new implementation of sqlite3VdbeMakeLabel() is faster and makes fewer 
memory allocations by deferring memory allocation until 
sqlite3VdbeResolveLabel() is called, at which point the code generator has
a better idea of how big the relocation table needs to be.
The sqlite3VdbeMakeLabel() routine now takes a Parse* parameter instead of
Vdbe*.

FossilOrigin-Name: 4a0929ac76d8aa5dd65eac3b83d6bbf41e505e01d175ca0fb2b19ba02d439415
 2018-12-29 02:26:59 +00:00
drh
a838997544 Fix the sqlite3ExprDup() routine so that it makes complete duplications of 
subqueries containing window functions.

FossilOrigin-Name: 940174543e87184a0278fcd02e8a096a11510174d9c1d65d21878819790ddaff
 2018-12-06 22:04:19 +00:00
dan
0f5f54062c Fix a problem with using window functions in compound (UNION, INTERSECT etc.) 
queries.

FossilOrigin-Name: 059ff53a46c7f1e4bf3e7dc558312beef67826c2753e2ab7e4e7df498b37b617
 2018-10-23 13:48:19 +00:00
drh
eda079cd2c Combine the Expr.pTab and Expr.pWin fields into a union named "y". Add a new 
EP_WinFunc property that is only true if Expr.y.pWin is a valid pointer.
This reduces the size of the Expr object by 8 bytes, reduces the overall
amount of code, and shaves over 1 million cycles off of the speed test.

FossilOrigin-Name: ad130bb86e74e6ce165fdbdce3a19699510f0e62071c1c7923b5a4538d888c7c
 2018-09-20 19:02:15 +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
9341916ed5 Adjustments to VdbeCoverage macros to deal with byte-code branches that 
can never be taken in some directions.

FossilOrigin-Name: b170c0092b1d0c47dd700843f0c870e51181939607a897fbcae55a58042160f9
 2018-07-11 03:27:52 +00:00
drh
5d6374fa39 Remove incorrect ALWAYS() macros from the window function logic. 
FossilOrigin-Name: 94ac51cc4e7fdf484214e1936fc96104b96134632a8eb99558b3af743ac8bb8b
 2018-07-10 23:31:17 +00:00
drh
c3649417fe Add VdbeModuleComment()s on the three main code generators for window 
functions.

FossilOrigin-Name: f7c239e959004cb90dc8537ab2e1fca5f26ef21f4f6f3dfd743a05a55e705090
 2018-07-10 22:24:14 +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
dan
b556f26145 Fix a problem with using scalar sub-selects in window function queries. 
FossilOrigin-Name: 687fe532c274265ca77451f97829743fcb8a714d0f6b1ceb9a147ab9babdc5b5
 2018-07-10 17:26:12 +00:00
drh
6ccbd2787b Further improvements to bytecode branch testing. Fix cases where the 
macros said a branch could not be taken when in fact it could be.  Alter
some window function branch coverage macros to indicate that comparison
operands cannot be NULL.

FossilOrigin-Name: 76e42b7071a71137c0da4f10db4e653ae94a89b56e95cd3f036bff08c9500d08
 2018-07-10 17:10:44 +00:00
drh
0b3b0dd1b1 New VDBE comments and coverage macros. 
FossilOrigin-Name: a9a307265b0626b3e9df69534c8eacf18413ea31784c9d931eadcff515d3dd84
 2018-07-10 05:11:03 +00:00
drh
c7bf57168a Fixes for various harmless compiler warnings. 
FossilOrigin-Name: 5023b1b85b883a716a5da673740b6effe214ee0490f4ca45f161bb8b04784366
 2018-07-09 22:49:01 +00:00
drh
7999cc434e Remove redundant branches in window function processing. 
FossilOrigin-Name: 8fdaf3f37e5ddac9b7337a50f32f5d2bcdd64780797f08cfd3fccfa95819edfe
 2018-07-09 17:33:24 +00:00
dan
a1a7e112fe Throw an error if the second argument passed to nth_value() is not a positive 
integer.

FossilOrigin-Name: 1a06e57a0b4279fa580c7ff4f152645f005794aaf86eeabf694637b7da11f763
 2018-07-09 13:31:18 +00:00
dan
f5e8e31399 Fix a bad assert() in window.c. 
FossilOrigin-Name: fe8aaf0c806413965f50a03e34b5fdfaaa8b09dc0af73f41e830f7b664bd1ced
 2018-07-09 06:51:36 +00:00
drh
19dc4d40e7 Identify specific FuncDef objects for window functions using the pointer to 
the function name (FuncDef.zName) rather than the pointer to the xStep method.
This allows xStep method pointer to be replaced with a single noopStepFunc()
procedure, and thus save having lots of different no-op step functions.

FossilOrigin-Name: 410e13b0e0fb6e040808f076014d55ecf2b541c5439b4fd53c5bdcb8d800098e
 2018-07-08 01:02:26 +00:00
dan
a5ef149c4e Add missing VdbeCoverage() macro to window.c. 
FossilOrigin-Name: 63f4d306ba19f6ba900a7d7480ccaa3d1e4a204e7c82bf5eb2e4bd849ef3a22f
 2018-07-07 17:38:49 +00:00
dan
d4fc49f735 Fix a problem with the handling of NULL values in the min() window function. 
FossilOrigin-Name: b76f35b09235d44dc3d176377bbb9c18b7cdc9392800103ff53c54730a427a5c
 2018-07-07 17:30:44 +00:00
drh
e4984a2bf4 Try to improve the error messages for misformed frame specifications in 
window definitions.

FossilOrigin-Name: 927b95a0812787bcb3c28d1a0ea94717dc2cc60f6d480623f0c7cbce0c546fc9
 2018-07-06 17:19:20 +00:00
dan
bfead59b3b Also disallow non-constant expressions in "<expr> PRECEDING" or "<expr> 
FOLLOWING" clauses.

FossilOrigin-Name: a6dffecc6b35c618cc5e5a06892765bdbec587dcd0ae8686c231a21516e38eab
 2018-07-06 14:31:26 +00:00