database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2026-10-26 21:59:27 +03:00
Code Activity
17,644 Commits 1,786 Branches 392 Tags
or-optimization
Commit Graph

12287 Commits

Author SHA1 Message Date
dan
c456a76fb3 When generating individual loops for each ORed term of an OR scan, move any 
constant WHERE expressions outside of the loop, as is done for top-level
loops.

FossilOrigin-Name: e4a022be4b069b08cfdfda5295461676b99d28e17bbbedfbcb362dec69de59bd
 2017-06-22 16:51:16 +00:00
drh
c45fdb2a7f Enable pragma virtual tables for the integrity_check, quick_check, and 
foreign_key_check pragmas.

FossilOrigin-Name: 118f7bb33a6f78951bbffa957f48015d1bce5aaf9246a99262a90bc8ad52e5a3
 2017-06-21 01:36:30 +00:00
drh
f383f35e6c Rename the azCompileOpt global constant to avoid a harmless compiler warning 
about a name conflict with a local variable.

FossilOrigin-Name: 94e420ecfb4ec047eb7d1d3125ca8487c90d466760b7f7183759ff922bd868d1
 2017-06-20 18:19:16 +00:00
dan
bd11a2acbb Ensure that the query planner knows that any column of a flattened LEFT JOIN 
can be NULL even if that column is labeled with "NOT NULL".
Fix for ticket [892fc34f173e99d8].

FossilOrigin-Name: 483462682d3a57fb9dd85b4772596e9738f1694a454b8ebbc480b9452733e88d
 2017-06-20 17:43:26 +00:00
drh
40db2fd7a3 Fix a missing comma in the previous check-in. 
FossilOrigin-Name: f3db02f49073c3f08c3fd7816d85e5472d5e22df20d862fe4886eb2a97efb15f
 2017-06-17 18:49:50 +00:00
dan
814aad618c Ensure that the value of the THREADSAFE symbol is always included when 
reporting compile time options, even if it was not explicitly configured.

FossilOrigin-Name: 95141c642697dc037e57f9e4992ff3460155995d3caef6259235601ee722cb93
 2017-06-17 17:29:24 +00:00
dan
da1f49b83f Rework the code in ctime.c a bit to report on more compile time options. And 
to only output configuration options passed in to SQLite, not the default
values of #define symbols set automatically. Also generate the large array in
ctime.c using new script tool/mkctime.tcl, instead of entering it manually.

FossilOrigin-Name: bc1951d699e6eeacbe15776a37cd0f5cf3f09eb85d3ae01cff43293cb286fcd7
 2017-06-16 19:51:47 +00:00
drh
ba87c6c2cd Minor refactoring change to clarify how ATTACH works. No functional changes. 
FossilOrigin-Name: 3944a32e1dd90ff903bcbaaa7cb497cebcfcb2ba2a326726ec2268505e524ae3
 2017-06-16 18:31:30 +00:00
drh
76cf858d3d Prevent pagesize changes on VACUUM in encrypted databases even when running 
the VACUUM on an attached database.

FossilOrigin-Name: 11693849342a308ad929e2d9ead67faabacb523af76128c6973ed6cc8b62c11e
 2017-06-16 13:43:37 +00:00
drh
0942559a14 Move the "shell_add_schema()" SQL function used by the ".schema" command 
of the command-line shell to a different spot in the shell.c source file
so that it is not in the middle of an unrelated module.

FossilOrigin-Name: 254617a1ccfa1736d4e53d670d80319c79c4d93ebf1de69d89ebdba3949bc270
 2017-06-15 16:56:05 +00:00
drh
90cdec0672 Fix harmless compiler warnings in the shell.c file 
FossilOrigin-Name: 9afd7a2ffd3a39456190ad05e85ff6485298aae262d9e0698a58c1d73507a36f
 2017-06-15 13:07:56 +00:00
drh
594ccd09b1 Improvements to the ".tables" command in the command-line shell so that 
it shows the name of all schemas if the name is anything other than "main".

FossilOrigin-Name: c7f778b7cee16a1dcebccd256408ee1d08ef2b62e388a9ebba5738a0a89bf3a0
 2017-06-15 12:50:47 +00:00
drh
20c9c3f4eb In the command-line shell, enhance the ".schema" command show that it 
shows the schema for ATTACH-ed databases in addition to "main".

FossilOrigin-Name: 48e086284a76da10a85315bc992e2294bd4711e35ec5a5abaa16e39a6a69d206
 2017-06-15 12:21:09 +00:00
drh
6e3bccd5c9 Fix the processing of double-negatives in WHERE clause constraints with 
STAT4.  Ticket [cfa2c908f2182]

FossilOrigin-Name: 35b34bdf0843b49be39e13ed212e918c2d45afdb8374b5cd02ba6d2d5b16b3b9
 2017-06-13 04:31:54 +00:00
drh
56790ea567 Fix an off-by-one error that messes up the display of loop codes in the 
".wheretrace" debugging output for queries with more than 62 candidate
loops when SQLITE_ENABLE_WHERETRACE is on.

FossilOrigin-Name: 0bbdaf2801e4102d952db65e53962e534b67b8b72e76fadb4ce404a6249129d9
 2017-06-11 20:17:02 +00:00
drh
eafc6dfe2b When reusing a materialized view, make sure the estimated number of 
output rows is correctly initialized to avoid confusing the query planner.

FossilOrigin-Name: 87aceb417a813a2925b636cffa660fe25f3b7e3b3c84bb2108951bf0af644376
 2017-06-11 19:51:36 +00:00
drh
c62aab5ba8 Fix a potential null-pointer deference following OOM introduced by 
check-in [e39795d7] (unreleased).

FossilOrigin-Name: a2f77285fa44df86863eed576271f1030ec60f15480daf175908c5082c27774b
 2017-06-11 18:26:15 +00:00
drh
c097b309aa Update the documentation to make it clear that the table name parameter 
to sqlite3_table_column_metadata() may not be NULL.

FossilOrigin-Name: 2881ab1ed24ed72760086785bdf224c4e687cf39a02fd349ae13c6e1235e24da
 2017-06-09 11:43:53 +00:00
drh
c5d353fb33 Adjust the implementation of the ".selftest" feature of the shell to avoid 
using the deprecated sqlite3_get_table() interface.

FossilOrigin-Name: 3168e2c92ad0a0dafc78a27ee1d87ac89f426585f506f418a0182141335dc68b
 2017-06-09 02:27:49 +00:00
drh
d96cc6fbcb Add a testcase() to confirm that an OOM on sqlite3DbStrNDup() is handled 
correctly in trigger.c.

FossilOrigin-Name: 343e55992f503efa662e49bb0f3c0d798defd0a11f2ee1c36968902fa7e06823
 2017-06-08 14:35:21 +00:00
dan
ca66f6c6f4 Ensure pointer map entries are always added when a row that does use overflow 
pages replaces one that does not in an auto-vacuum database. Fix for
[fda22108].

FossilOrigin-Name: b30dfba811cb531b09ff2e71a1a18ed53c816cb39155dd52ca3e2701425fe17b
 2017-06-08 11:14:08 +00:00
drh
cc97ca4c08 In SQLITE_DEBUG mode, attempt to log the page number of the database that 
contained the problem when SQLITE_CORRUPT errors are seen.

FossilOrigin-Name: e39795d7d798d5249c7bd2a0f6ff891b455f4300a3d638c39a4668323b367666
 2017-06-07 22:32:59 +00:00
drh
d1417ee1cb Add the SQLITE_DEFAULT_ROWEST compile-time option for changing the estimated 
number of rows in tables that lack sqlite_stat1 entries.

FossilOrigin-Name: 234ede26e30f20e6c33002739ed8be35dbfb5c77700bd857ff31072b9b7df347
 2017-06-06 18:20:43 +00:00
dan
b1d66c5986 Fix a bug in test_fs.c that occurs when the first component of a path contains 
a GLOB or LIKE escape character.

FossilOrigin-Name: 73c70590d7689806901378cd2a7e167ec4339f886031369266e07868acd23b93
 2017-06-05 16:33:53 +00:00
drh
64bf76d2b2 Fix the column width deduction logic in the command-line shell to account 
for multi-byte utf8 characters.

FossilOrigin-Name: ed0842c156ab1a78d5d00d3a55dab5e3f08cd349328d606724688f1528df3f6b
 2017-06-05 12:29:26 +00:00
drh
4c88348729 Initialize a variable to zero to prevent an (incorrect) compiler warning of 
it potentially being uninitialized.

FossilOrigin-Name: 65182ce041b30cd0193b958eca975b720fe5200a868baba1e633e49433d86813
 2017-06-03 20:09:37 +00:00
drh
170ad68a40 Change the name of the OP_Seek opcode into OP_DeferredSeek for better 
clarity of function.  No functional code changes.

FossilOrigin-Name: ab33d299c7dab52703d06f3441c8a98c6c809b2612ec65d71aab2919bd2b1540
 2017-06-02 15:44:22 +00:00
drh
cdbb126be7 Add the SQLITE_STMTSTATUS_MEMUSED opcode to sqlite3_stmt_status() 
for finding the heap memory usage by a single prepared statement.

FossilOrigin-Name: c26cf978eead1c9d265eddabaa421e7735b472fcf2792cd2bdeb0901bcf3fb44
 2017-05-31 17:30:08 +00:00
drh
3528f6b62b Add the SQLITE_STMTSTATUS_MEMUSED option for sqlite3_stmt_status() that reports 
the amount of heap memory used for a single prepared statement.

FossilOrigin-Name: b57d510465458dec5b5fc778fd6e8833392964201f9febebf526e60a543da0c2
 2017-05-31 16:21:54 +00:00
drh
d4ab003d4e Avoid allocating excess memory to the KeyInfo objects. 
FossilOrigin-Name: df7859435161f3ecf36635ce574bf73573516a1f2c6e75be320619364e7067d1
 2017-05-31 13:45:59 +00:00
drh
d5bdd5effb Remove a completely unnecessary memset() from the INSERT code generator. 
FossilOrigin-Name: 7d58836b9db1293a3a6581af4358b7c91a588efd5c9b2df384803f3855ff87a8
 2017-05-31 13:27:15 +00:00
drh
b8a1290a28 Very small performance increase in sqlite3VdbeSetNumCols(). 
FossilOrigin-Name: 8885b4461044ae8ecdfe1b9aa47f4aad65efabc98e3fcd9e307a06504fab34c6
 2017-05-31 11:24:13 +00:00
drh
02f18cc5ac Reorder fields in the PgHdr object for a performance increase. 
FossilOrigin-Name: 326e63d71e0e164c5bcd1f74772cb4071b82daf6f04a5d440b985bace5a4c941
 2017-05-31 03:20:39 +00:00
drh
a8b9793c86 Avoid unnecessary memory zeroing during expression list allocation. 
FossilOrigin-Name: de28e6514a42438411e2c9d833ba660108128ca86d0b90f32925fb73195f4862
 2017-05-31 02:58:30 +00:00
drh
d03257c141 Size and performance optimizations to sqlite3ResolveExprNames(). 
FossilOrigin-Name: af8c0fed93c830c50641d95691bb507c31947a15529aba2a88bfaa66b3a3287a
 2017-05-31 00:49:40 +00:00
drh
2ab792e4c0 Change sqlite3BtreeNext() and sqlite3BtreePrevious() so that they return 
SQLITE_DONE if they have already reached the end (or beginning) of the table.
This gives a performance increase and size reduction.

FossilOrigin-Name: e972a3860892022d57b26ec44ce0fbadc61c1ff54b7a10b7e82390db88d323a7
 2017-05-30 18:34:07 +00:00
drh
e70d01f143 More efficient error handling and reset in the binding mechanism. 
FossilOrigin-Name: 9a3e3b34ba6eafce2f560c13225a3673e18d696b29295b59d958e938fa593baf
 2017-05-29 22:44:18 +00:00
drh
77f6af2b96 Avoid unnecessary fstat() calls to determine the database size when 
transitioning into a read transaction on a rollback-mode database.

FossilOrigin-Name: 6c3476b513965df22d648f9a1b99733af753b44d51163cc7d42a69bf562300e1
 2017-05-29 16:45:45 +00:00
drh
5f5a2d1c3c Avoid unnecessary calls to fstat() to determine the database file size. 
FossilOrigin-Name: c733a1dea37e4678e7bd0d3d0ca9b8eae1fbdc28615f75d8f1e5141aa53567d9
 2017-05-29 14:57:23 +00:00
drh
8abc54e2e8 Fix a typo in a comment. No code changes. 
FossilOrigin-Name: cb29b838886769afe866b1172e3d5d7e36387149b79c51f91cf59da3f4a5f25b
 2017-05-29 14:30:46 +00:00
drh
979dd1be57 Optimizations to the Walker object and its methods to make the code a little 
smaller and to help it run a little faster.

FossilOrigin-Name: 6854a34ed708259f2280f7ee56cec09f7fc99810dc739dc2814ddeae286aa2c4
 2017-05-29 14:26:07 +00:00
drh
d8a295669c Correctly initialize the iSelectId of FROM clause terms that are a self 
join of a reused materialized subquery.  Without this, the EXPLAIN QUERY PLAN
output for the query will identify the subquery using the uninitialized
(and arbitrary) iSelectId.

FossilOrigin-Name: 43c9ae371f6250fee98a7c4011726eff8ad37f5a97add4f490ac3a2dd501a0d2
 2017-05-29 13:09:24 +00:00
mistachkin
e16a350f17 Improve shell help text for the '.open' command. 
FossilOrigin-Name: 7cc940a97efc096ff3725710f526c06f52453bd923fb9e825ce6990275df747a
 2017-05-29 03:48:13 +00:00
drh
ae2ac854b3 Smaller and faster vdbeSorterCompareText(). 
FossilOrigin-Name: 542dc4c5eb87017fe03b6c181e779993aa84564785e1177ccf937d52f985593b
 2017-05-27 22:42:36 +00:00
drh
14e845a9d4 Small performance increase and size decrease in the btreeInitPage() routine. 
FossilOrigin-Name: 6f415833e0554706dcf04f68ecba4ca2e54c08f3bbf6a1dba182bb132c912a2e
 2017-05-25 21:35:56 +00:00
drh
137c46f8b6 Merge the LEFT JOIN query flattener fixes from 3.19.2. 
FossilOrigin-Name: 6513e4a121e32df7e5cd95f47cdf8049b85bdbcb378cf23db29838fb1143d3ce
 2017-05-25 17:27:52 +00:00
drh
dc6de47925 The SQLITE_EXTRA_IFNULLROW compile-time option causes OP_IfNullRow opcodes 
to be issued for references to the right-hand side table of *any* flattened
join, not just LEFT JOINs.  This puts extra stress on the OP_IfNUllRow opcodes
for testing purposes.

FossilOrigin-Name: 1a074c8a2bc0b28918ef905339d11a21d30101b4ea8c06c8b3faca7d17237538
 2017-05-25 11:39:50 +00:00
drh
074ce1e7fd The TK_IF_NULL_ROW expression node must be treated as a variable that 
references the table Expr.iTable.
Proposed fix for ticket [7fde638e94287d2c].

FossilOrigin-Name: b30a364a12d9865242b1444984cd25ee126dc69108d5c6a2d4b35df184437fe9
 2017-05-25 00:28:36 +00:00
drh
f43ce0b445 The TK_IF_NULL_ROW expression node must be treated as a variable that 
references the table Expr.iTable.
Proposed fix for ticket [7fde638e94287d2c].

FossilOrigin-Name: 77fc23013cebc7797985864b91d78db5d0e2469511732044ebfaf02b891c979a
 2017-05-25 00:08:48 +00:00
drh
63ad86e70e Fix a problem in STAT4 equality estimation for multi-column indexes 
introduced by check-in [3e0590dee0e68cc1599].

FossilOrigin-Name: cfb0d9e0207128b1c2b48689288a849b19dbc00a22cfaca26eec4bfc773629f8
 2017-05-24 04:18:00 +00:00