0a1082aec2
Another fix in the IN-operator algorithm description.
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FossilOrigin-Name: f474aeac4fa62d87e73189868d7c7a295ffb7265
2016-08-25 17:47:36 +00:00
1373c3a8c5
Further refinement of the in-operator.md documentation.
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FossilOrigin-Name: df0648373a50006ca18d692e12552d1d53d549e3
2016-08-25 17:40:32 +00:00
ecb87ac88d
Improvements to IN operator code generator comments. Avoid unnecessary
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Copy operations on the LHS of the IN operator.
FossilOrigin-Name: b6344298783a1207cba3f635939ddc9ba922ab67
2016-08-25 15:46:25 +00:00
ee0f22fd3b
Corrections to the IN-operator notes.
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FossilOrigin-Name: 25033ee94538289ba7e0147da30a18300047123f
2016-08-25 14:23:59 +00:00
539f2fef03
Add notes on the implementation of the IN operator.
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FossilOrigin-Name: d256b2caeb9e3eb5dd88bb569ec71f91e9991c81
2016-08-25 14:00:15 +00:00
18016ad2bb
Simplified VDBE code for the vector NOT IN null-scanning loop.
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FossilOrigin-Name: 7ae504e62e9bbbbd85a676f3c3922b7fd0cc73d2
2016-08-24 21:54:47 +00:00
72e26dec86
Improved extended comments of comparison operators when the SQLITE_STOREP2
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flags is set on P5. No changes to non-debug code.
FossilOrigin-Name: bbc1b016164ed0793e07302614384d52119463e0
2016-08-24 21:24:04 +00:00
62659b2a80
In sqlite3FindInIndex(), improve internal comments and avoid an
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unreachable branch.
FossilOrigin-Name: 55945fc12f8157e32e6850e41575c0c6422d29e7
2016-08-24 18:51:23 +00:00
321e828d03
Fix more unreachable branches.
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FossilOrigin-Name: 6099c180db55396d6307538a5428ae5ef1b82d10
2016-08-24 17:49:07 +00:00
d0b67a8654
Add a NEVER() on an unreachable branch in comparisonAffinity().
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FossilOrigin-Name: 505a2f20eac62d4e170f003255c8984e4f3b0918
2016-08-24 15:37:31 +00:00
7887d7f24d
Fix a buffer overrun in the code for handling IN(...) operators when the LHS of the operator contains indexed columns or expressions.
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FossilOrigin-Name: f41a0391b732a8c4ad188163f34a0f4a22237bb5
2016-08-24 12:22:17 +00:00
ac6b47d164
The previous OOM fix was bad. Back it out and replace it with a better one.
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FossilOrigin-Name: 1e3bc3698a4b779e6af8e3c727929c4dbddf3edb
2016-08-24 00:51:48 +00:00
894241c847
Avoid a potential null-pointer dereference following an OOM.
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FossilOrigin-Name: 25f6ed8de4df9c9890d4a352a6d11084433e82ea
2016-08-24 00:25:27 +00:00
e835bc1285
Simplify the row value misuse error message.
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FossilOrigin-Name: 838c50a5bf46fd0340839d577fa28ba02b4f2034
2016-08-23 19:02:55 +00:00
66860af3dd
Fix a problem with rowvalue UPDATE when the rowvalue is not the left-most and
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the RHS is a multi-column subquery.
FossilOrigin-Name: e149e6b93a9afb3d574309c0db60e221e24078f7
2016-08-23 18:30:10 +00:00
abb9d5f189
Fix an uninitialized variable in CASE expression code generation.
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FossilOrigin-Name: c8ffae05e13033ec7425bf0f002df31f550bb7f1
2016-08-23 17:30:55 +00:00
12abf408ff
Fix the vector BETWEEN operator so that it only evaluates the left-most
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vector expression once. Add support for vector comparisons in the CASE
operator.
FossilOrigin-Name: 07e69f43a294d35b5145a2b0242ee42d50adab14
2016-08-22 14:30:05 +00:00
db45bd5e82
Reinstate the mechanism in BETWEEN that avoids evaluating the first expression
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more than once, but fix the affinity extractor so that it works with this
mechanism. The de-duplication of the first expression still does not work
for vector expressions, though.
FossilOrigin-Name: 2f39987f21bd6dae8d2be610a1fd5f06f8878e9e
2016-08-22 00:48:58 +00:00
84b19a3da1
The docs promise the in "x BETWEEN y AND z" the x expression is only evaluated
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once. That is no longer true, and so some tests are failing. This needs to
be fixed before merging to trunk.
FossilOrigin-Name: e50d264fdc2f08d19202c68f73f18df301cb233d
2016-08-20 22:49:28 +00:00
d832da7f40
Further comment enhancements. No changes to code.
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FossilOrigin-Name: d4562a9e7b1eaff41466210e3a0caaf374ec5a92
2016-08-20 21:11:25 +00:00
76dbe7a8d0
Clarification of code comments in expr.c. Clean up the implementations
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of sqlite3ExprIsVector() and sqlite3ExprVectorSize() slightly.
FossilOrigin-Name: 4fb66d6592b141a4a71359250dbd1ac454569cb9
2016-08-20 21:02:38 +00:00
8bd0d58e1c
Fixes for problems following OOM errors.
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FossilOrigin-Name: 9041ee4a6f0e8389297f887f1431ab5cfe783390
2016-08-20 18:06:14 +00:00
9854260bca
Do not duplicate the Expr.pLeft subtree of a TK_SELECT_COLUMN node.
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FossilOrigin-Name: 8384c77ebb3f65fbc54c199885926f2066f0b140
2016-08-20 17:00:16 +00:00
f358009a93
Fix a segfault that could occur if a query that used a vector comparison contained certain types of syntax errors.
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FossilOrigin-Name: 203f07c5e140e74cf91d0c1e20135c21236f0fc1
2016-08-20 15:01:24 +00:00
9e730f0bb8
Improvements to the vector comparison splitter in exprAnalyze().
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FossilOrigin-Name: a3ffd283bc931b04170ef737e56bced33d27f06d
2016-08-20 12:00:05 +00:00
8762ec1935
Improvements to comments. No code changes.
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FossilOrigin-Name: 4165d20f64d778a4e48f511a37cfced8579d4dbe
2016-08-20 01:06:22 +00:00
a1251bc40d
Add support for vector assignments in the SET clause of an UPDATE statement.
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FossilOrigin-Name: f320d47d6b7b08d9552c8444004bc256348bda90
2016-08-20 00:51:37 +00:00
fc7f27b9d2
Change the way TK_SELECT_COLUMN is handled so that the subquery is only
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generated once even if part of the vector comparison is used for indexing
and the other part is now. This change also is a pathway to vector assignment
in UPDATE statements.
FossilOrigin-Name: d8feea7dcde83179bff303072426561cfe825e58
2016-08-20 00:07:01 +00:00
8d25cb90cd
Replace the magic number (-2) with its symbol XN_EXPR in the
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exprMightBeIndexed() routine. No logic changes.
FossilOrigin-Name: d4a5af69cc3bde6f8c02075c07b4d47a0252392d
2016-08-19 19:58:06 +00:00
39a11819f3
Improved comments on sqlite3CodeSubquery(). No changes to code.
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FossilOrigin-Name: acea4ee136def4815d22eec240c5903a72bde9bd
2016-08-19 19:12:58 +00:00
a15a8bc822
Show the WhereTerm.iField value on debugging output, when it is non-zero.
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FossilOrigin-Name: 931c95358d8bc02f3e3d8ee4e545a07b2d2c97e8
2016-08-19 18:40:17 +00:00
4602b8e89d
Fix an obsolete comment on codeEqualityTerm(). No changes to code.
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FossilOrigin-Name: d07be5afb0a915769382dfd815403f8832cb3eec
2016-08-19 18:28:00 +00:00
b684fd5c4a
Merge recent enhancements from trunk.
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FossilOrigin-Name: b17872363b60edab05a5d382a44038aad91e4d9f
2016-08-19 15:41:24 +00:00
6a754dc767
Disable row counting on queries run while doing a VACUUM.
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FossilOrigin-Name: ad35ef116296e5d6aaeb9ef260bf35bee3bd6d20
2016-08-19 15:12:38 +00:00
9ef5e7708a
Add the capability to VACUUM an attached database by specifying the schema
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name as an argument to the VACUUM command. Since version 2.0, VACUUM has
accepted an argument which was silently ignored. Now it has meaning.
FossilOrigin-Name: 29d63059b4d2bb612523ac55ebfef040d054a64f
2016-08-19 14:20:56 +00:00
e59be01072
Fix a zName to zDbSName conversion missed in the previous check-in.
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FossilOrigin-Name: d7cf423cdccada2b0a4b7cc79ccf5f35d6f43212
2016-08-18 20:56:39 +00:00
03181c8c27
Fix a SQL NULL handling bug in the vector IN operator code generation.
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FossilOrigin-Name: 936146b12e27784f15a68fe65732c6d92c3a12f3
2016-08-18 19:04:57 +00:00
48cb3a7600
Display SELECT_COLUMN expressions in the .wheretrace debugging output.
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FossilOrigin-Name: 3b27a5da100037f75a4efc15e0354a6aa94194f8
2016-08-18 18:09:10 +00:00
db97e56217
Display VECTOR expressions in .wheretrace and .selecttrace debugging output.
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FossilOrigin-Name: 157347e2580e5078c4081d602e9d1a82d194e719
2016-08-18 17:55:57 +00:00
c8d0b0b9d4
Since the TK_VECTOR token is not actually used by the parser, make it an
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extra token code added by the tool/addopcodes.tcl script during parser build.
FossilOrigin-Name: b40b202c1f82808d2240e87b22f1e78b2208cb26
2016-08-18 15:36:03 +00:00
5ea494425f
Merge recent enhancements from trunk.
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FossilOrigin-Name: 4768a1066cb9c7627064d7efec44188d6755cb03
2016-08-18 15:21:16 +00:00
69c338263a
Rename the Db.zName field to Db.zDbSName to make it more descriptive and to
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distinguish it from all of the other "zName" variables scattered throughout
the code.
FossilOrigin-Name: 92a22f01343a898455fd61c3b8e7d7c954f5b569
2016-08-18 14:33:11 +00:00
0f825a7e26
Remove an unnecessary stack variable from sqlite3VdbeExec().
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FossilOrigin-Name: c54bd9c82dd34951dc87848c0b19fcccaef928db
2016-08-13 14:17:02 +00:00
af69eda63e
Improvements to commits. No code changes.
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FossilOrigin-Name: 18f5a3bee4f870be4644a6042a20081c46edb7d0
2016-08-13 13:03:46 +00:00
a2f629251f
Fix to the vector less-than operator. All legacy tests passing now.
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FossilOrigin-Name: ec70a67ebc997f457be4d52d8affc37e142dc3ff
2016-08-13 12:37:47 +00:00
79752b6e63
Attempt to simplify the logic and generated code for vector comparisons.
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Basic comparison operators are working, but there are many indexing test
failures still to be worked through.
FossilOrigin-Name: dfc028cfbe7657d20727a2670ecadb1575eb8cbb
2016-08-13 10:02:17 +00:00
471b4b92bd
Add VdbeCoverage() macros on newly added VDBE branch operations.
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FossilOrigin-Name: 381aa73141db8ec59adbcb09e71af660ee4ae5ce
2016-08-12 11:25:49 +00:00
a48d7e7749
Fix a post-OOM memory leak.
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FossilOrigin-Name: 14009b32b955b42cfd5f0c2ce7d4b3ce19ce201e
2016-08-12 11:01:20 +00:00
1bf4ca7c42
Add the "modeof=<filename>" URI parameter to os_unix.c - used to specify a file to copy permissions from when a new database is created. Also allow passing NULL as the second parameter to sqlite3rbu_vacuum().
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FossilOrigin-Name: ed406d31ff54ee3de8db91690a966e5c561f8f94
2016-08-11 18:05:47 +00:00
088645b090
Merge recent changes from trunk.
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FossilOrigin-Name: 959677b97ba15f786936c762e2e68df1151d7ed0
2016-08-11 12:31:21 +00:00
drh