1a17b44231
When doing a DISTINCT query using an index, try to use the index to skip ahead
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to the next distinct element, rather than doing a full scan of the index.
(This is the "skip-ahead-distinct" optimization.)
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2017-04-14 17:30:43 +00:00
399c7e21e4
An initial attempt to optimize VIEWs that occur as the right operand of a
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LEFT JOIN. This particular check-in does not work correctly because it does
not deal with the case of columns in the VIEW that return non-NULL even when
all columns in the table of the VIEW are NULL because of the LEFT JOIN.
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2017-04-14 17:18:45 +00:00
b1ed717f18
Make USE_FULLWARN=1 the default for MSVC and fix harmless compiler warnings.
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FossilOrigin-Name: 6bf673767b8e5cedef1acff795cbe524fab8db2525c06424db4e038934a33936
2017-04-14 14:50:34 +00:00
d97cda43ab
Enhance the sqlite3TreeView() display for Expr objects so that it shows
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the iRightJoinTable value for Expr nodes that have the EP_FromJoin property.
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2017-04-14 14:02:14 +00:00
46967de2ec
Simplify the interface to the subst() routines that are part of the
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query flattener by collecting common parameters into the SubstContext object
and passing around a pointer to that object.
FossilOrigin-Name: e651074be28b2077b8a298f513e2e699ceca99164ace9869ea50873c0637fd2e
2017-04-14 12:39:37 +00:00
7c88bcd473
Remove an incorrect ALWAYS().
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FossilOrigin-Name: f956f6ae6b0863c70c4a2b227338d5c332e87f2ec6f3fcdf2233c14c5b78ca2b
2017-04-14 12:27:45 +00:00
571311502d
Fix a couple of unreachable branches.
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FossilOrigin-Name: 1aa0ea8db7580aff8bed2f78117ed50019e5545cef48cab782f512a2599fd0c5
2017-04-14 00:45:51 +00:00
172806e489
Fix the skip-ahead-distinct optimization so that it works with indexes that
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have repeated columns with different collating sequences.
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2017-04-13 21:29:02 +00:00
c04ea80f64
Simplification of the skip-ahead-distinct logic. There is still an issue
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with handling COLLATE.
FossilOrigin-Name: 57c5173b6376a76013b0611ce9770100bd8c04e80402e35d821d8614709f4795
2017-04-13 19:48:29 +00:00
a74f5c2923
New test cases and minor fixes for the optimization on this branch.
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2017-04-13 18:33:33 +00:00
d0a537100c
Reinstate the SQLITE_API qualifier on the sqlite3_delete_database() method in
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test_delete.c. Accidentally removed by the previous commit.
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2017-04-13 15:51:27 +00:00
44ae27ac32
Update the code in test_delete.c to use the "win32" VFS if SQLITE_OS_WIN is
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defined.
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2017-04-13 15:36:47 +00:00
839fa6d814
Only use the skip-ahead-distinct optimization if the index has been analyzed
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and we know that a skip-head is likely to skip over at least 11 rows. The
magic number 11 was determined by experimentation.
FossilOrigin-Name: 0cf16decd534bf2d66620c293f8c8987f356305f2d97f8fd12d260bda1571385
2017-04-13 13:01:59 +00:00
929b695111
Allow a user column name to be used on the LHS of a MATCH operator in FTS5.
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FossilOrigin-Name: 6f54ffd151b0eca6f9ef57ac54802584a839cfc7373f10c100fc18c855edcc0a
2017-04-13 09:45:21 +00:00
8489bf5aff
Forward port the skip-ahead-distinct branch which was abandoned for some reason
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that I do not recall. This port should have been achived by a merge of trunk
into the previous head of skip-ahead-distinct, but that did not work. So I had
to manually "rebase" the changes.
FossilOrigin-Name: 132339a1fb0b9664df4d3eefbed6e77ef100ba95a91dcc622da7bd3fcdfcd6af
2017-04-13 01:19:30 +00:00
8671538cad
Fix a regression caused by the fix for ticket [6c9b5514077fed34551f98e64c09a1] -
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control characters allowed in JSON.
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2017-04-13 00:12:32 +00:00
03155f659f
Update fts5 to support "<colset> : ( <expr> )" for column filtering, as well
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as "<colset> : NEAR(...)" and "<colset> : <phrase>".
FossilOrigin-Name: c847543f8bb1376fef52bca72b4191162a32eb7e6c5f0cd1aa0ab116b3183396
2017-04-12 17:50:12 +00:00
26849e14c2
Improved \n and \r escapes in the ext/misc/dbdump.c utility function. The
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implementation of dbdump.c now matches the implementation in the CLI.
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2017-04-12 17:38:24 +00:00
15e0f3d901
Avoid updating unaffected indexes on a table as part of an UPDATE that
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requires foreign key processing in some cases.
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2017-04-11 20:48:30 +00:00
940b5eaa5e
Avoid updating unaffected indexes on a table as part of an UPDATE that requires
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foreign key processing in some cases.
FossilOrigin-Name: 477bea9ed0dd0fa69896bfd16d9b1d22170cbab784e3279ce65c29c47e032f34
2017-04-11 19:58:55 +00:00
ff6d50e973
Limit the depth of recursion for valid JSON in the JSON1 extension in order
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to avoid using excess stack space in the recursive descent parser.
Fix for ticket [981329adeef51011052667a9].
FossilOrigin-Name: 1f68c184596912d742b50b1ca38252a9e783aacf121619a27b17a7ae9f6df041
2017-04-11 18:55:05 +00:00
e97c9ff49a
Smaller and faster implementation of exprMightBeIndexed().
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FossilOrigin-Name: 76cd611d41465fcec61c21520d55172cb236530f38386b7d4a5544ba87de2353
2017-04-11 18:06:48 +00:00
ef90a6b8dd
Very slight smaller and faster sqlite3SelectNew()
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FossilOrigin-Name: 4143650c4ce32289d2301cdfc69bb10877246420f656bed122886f6803fc956a
2017-04-11 16:44:39 +00:00
cbae543a5c
Add an ALWAYS() around an unreachable condition in sqlite3VdbeMemGrow().
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FossilOrigin-Name: 0f3eb61f44c94234ffc14c3a493a27ec62c0d1e2bb62798f36eafa98ddcdc58e
2017-04-11 12:20:54 +00:00
b8d29c2f75
Fix a segfault that could occur if an indexed expression was used in a
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comparison operation within the result-set of a SELECT statement.
FossilOrigin-Name: d6bb7c42ff6309ce168ccdcf03b4cdabfccfc9e2a911d254ac7dc4fea4aa2bc1
2017-04-11 11:52:25 +00:00
d6e992cb1e
When using an index on an expression, try to use the columns of the index
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rather than pulling columns from the table and reevaluating the expression.
FossilOrigin-Name: a47efb7c8520a01110ce3b3531ebe1bab6720780d67fba001992c44c5807d332
2017-04-11 01:30:42 +00:00
eac5fc0476
Improved comments. Fix a problem when an indexed expression is used in an
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ORDER BY clause.
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2017-04-11 01:01:27 +00:00
2f8b37850c
Merge changes from trunk.
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FossilOrigin-Name: 8978465f335925378d3aa99df6190ce6a1ee6b130205ccc493f2399803844760
2017-04-10 23:42:04 +00:00
0415d826c0
Smaller and faster vdbeFreeOpArray()
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FossilOrigin-Name: e052436d9f54b785facd661adc648512356b831c0547aa8f347ebf4bd8ef1254
2017-04-10 20:51:21 +00:00
4c6463cc29
Slightly smaller and faster sqlite3VdbeMemGrow().
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FossilOrigin-Name: efd1702ae8da8e0dd3d2ee7bd5a1bd8aeff2b370498e404041fcb406fdaf72e4
2017-04-10 20:27:54 +00:00
2ac702d8c0
Add a new JSON test case to verify that all control characters are escaped
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in the json_quote() function.
FossilOrigin-Name: 6ee12221fa252784c897a24ae8cff64dfe6149cbc9020abe14539df33202d892
2017-04-10 12:31:15 +00:00
e12e24ded8
Change the JSON extension so that it disallows control characters inside of
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strings. Fix for ticket [6c9b5514077fed34551f98e64c09a10dc2fc8e16].
FossilOrigin-Name: 475d8f82ec61a4ff3e6a7650731230ccecb6cc580d1397d189d0ba479d9bad4d
2017-04-10 12:25:05 +00:00
7a6ea93fd8
Do not expose the name of the internal Mem object in the public interface
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defined by sqlite3.h.
FossilOrigin-Name: 19dd753f9e50fee247b1ab141669817c7e88bc3f6d6065dba6c731db9f7a2409
2017-04-09 19:23:55 +00:00
9fa866a8d9
Disallow leading zeros on numeric constants in JSON.
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Fix for ticket [b93be8729a895a528e2]
FossilOrigin-Name: 204e72f0080e8f08f99978870bd3cb9d59b068ecffee82192d707c650548b43b
2017-04-08 18:18:22 +00:00
a34adaf667
Expand on the comment above OP_Destroy to explain why it throws an error if
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there are any active reader VMs.
FossilOrigin-Name: b9a8c2b9bec9f537b2d5aff6659a5748b1f70b53519a1f9dfceb5209154eca8e
2017-04-08 14:11:47 +00:00
5b09d13a58
Have the rtree module close any open blob-handle within the xSavepoint method.
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This prevents such an open blob handle from interfering with DROP TABLE
operations.
FossilOrigin-Name: fa4416adc2a9a3a80db1d5befc0b95c3d0fc41affe38f7f2f45cdfae3f1b49eb
2017-04-08 13:52:41 +00:00
13fe138b0a
Fix the quoting mechanism for ".dump" so that it is not applied for the
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".mode quote" output.
FossilOrigin-Name: 78c1e90305d48917d9423d8e50a7dfd15ec27aa93cb421610062229c7ede13a6
2017-04-08 13:42:55 +00:00
be0bc8bb4d
Have fts5 close any open blob-handle when a new savepoint is opened. This
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ensures that fts5 does not prevent DROP TABLE statements (which always open a
savepoint) from succeeding.
FossilOrigin-Name: a921ada89050ce1d162fd1b0056939573635e2cec7ac0c2a99ae924b3ae593f7
2017-04-08 09:12:20 +00:00
297e2bdb8e
Make sure the RTree sqlite3_blob handle is reset prior to renaming the table.
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FossilOrigin-Name: 1cdae2db3c54970a1811e597065724578408c84d49d75b8fe25d56281ddc2e94
2017-04-08 01:09:14 +00:00
72507d431b
Fix the ".dump" command so that it works with ".headers on". Also fix the
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display of ".mode insert" with ".headers on".
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2017-04-08 00:55:13 +00:00
98368eeb2c
Use replace() instead of char() to quote newline and return characters in
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strings in the output of .dump, to avoid excess expression complexity.
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2017-04-07 20:20:08 +00:00
f1824a77b0
Remove an unused token type.
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FossilOrigin-Name: 13a422230dcf4a8a80434af97434d57e456dcaa6bf0c41e6859f37ded6fa96ca
2017-04-07 19:52:13 +00:00
aca19e19a8
Proof of concept for the ability to use the expression columns in an index
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on expressions in place of equivalent expressions in the result set or in
the WHERE clause. This check-in compiles but is mostly untested.
FossilOrigin-Name: a52ef2ad7c0e14b78b801f16a1f6ea8d8fa9ae5d7d810e18dd24c600b662a312
2017-04-07 19:41:31 +00:00
6193d49cdf
Use replace() instead of char() to quote newline and return characters in
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strings in the output of .dump, to avoid excess expression complexity.
FossilOrigin-Name: 4c2b572969ea2ed2a925444ecfa356aa877018cbb9c4f57d081ab4b535cd1dd0
2017-04-07 11:45:58 +00:00
54e2efcd2f
Fix the ".lint fkey" shell command for cases where the child key is also an
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INTEGER PRIMARY KEY.
FossilOrigin-Name: 48826b222c110a90996a84605318ea6b1e502b8c5129f4d561f8350dbdbcd264
2017-04-06 14:56:26 +00:00
50da9382f9
Fix the ".lint fkey" shell tool command so that it works for foreign keys that
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refer implicitly to primary key columns with non-BINARY default collation
sequences.
FossilOrigin-Name: 327eff25ba2420267cc8dc49dd3c3aab45f4bf9e060d1ad480e25d016d21f3ba
2017-04-06 12:06:56 +00:00
6948ed5977
Remove a confusing and pointless sentence from the documentation for the
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sqlite3_interrupt() interface.
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2017-04-05 13:44:40 +00:00
dbd6a7dc06
Split off sqlite3DbFreeNN() from sqlite3DbFree() and use it in cases where
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we know that the argument to be freed is never NULL.
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2017-04-05 12:39:49 +00:00
ac48b751e2
Save a few bytes and a few CPU cycles in sqlite3ExprListDelete() routine.
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FossilOrigin-Name: 9e6c939144a129b36bb119120442a4a021e00187783da211315d4bb13acd7c3a
2017-04-05 11:57:56 +00:00
f4dd26c5a0
Remove a conditional made unreachable by the previous ExprList enhancement.
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FossilOrigin-Name: a1cf44763277b6c745b5b5509ca9129b6c3231608b4d1c8aec2815b64b5a2a07
2017-04-05 11:49:06 +00:00
drh