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100 check-ins occurring around 1f8f4fdf3ff2b8de.
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2013-10-08
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| 20:42 | Rollback some of the previous changes in the branch such that the estimated row sizes are now only used as a tie-breaker for index scans. check-in: 65553ff3 user: drh tags: row-size-est | |
| 20:01 | Use #ifdefs to omit unused code in the columnType() routine depending on compile-time options. check-in: 3fd5e332 user: drh tags: row-size-est | |
| 18:40 | Further refinement of the idea of multiplying run-time cost estimates by the estimated row size. check-in: 18bd6ba9 user: drh tags: row-size-est | |
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2013-10-07
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| 21:49 | Fix compilation issue with MSVC. check-in: 36d64dc3 user: mistachkin tags: trunk | |
| 17:32 | Multiply all cursor step cost estimates by the estimated size of the row in bytes, in order to get the query planner ot make use of estimated row sizes. This check-in uses magic numbers in a few places (for example, estimates of the size of output rows) and needs lots of refinement. Consider this a proof-of-concept only. check-in: cb34cfe5 user: drh tags: row-size-est | |
| 16:53 | Try to remember statistics from ANALYZE using LogEst instead of u64. Leaf check-in: 8e78557a user: drh tags: log-stats | |
| 10:48 | Merge bug fixes from trunk. check-in: 1d7b2dc0 user: drh tags: row-size-est | |
| 00:36 | Restore the hexrekey pragma which was accidently deleted during the pragma refactoring. Make sure the hexkey and hexrekey pragmas do not overflow buffers with a over-length key. check-in: 0aca31e1 user: drh tags: trunk | |
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2013-10-06
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| 22:52 | Remove an incorrect debugging assert() that was accidently added during the STAT4 enhancement. check-in: 2bb7f74b user: drh tags: trunk | |
| 22:12 | Accept the sz=N parameter on table-only lines of sqlite_stat1. check-in: e9e932aa user: drh tags: row-size-est | |
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2013-10-05
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| 20:18 | Fix an issue in the test8.c test module that arises because of the change to PRAGMA index_list(). Remove an unused local variable. check-in: 029430c5 user: drh tags: row-size-est | |
| 19:18 | Completely remove the iScanRatio field. The PRAGMA index_list(TABLE) command shows the estimated row size in the forth column. It also generates a row for the table with an index name of NULL. The query planner still does not take row size estimates into account - that is the next step. check-in: 8b4aa0c7 user: drh tags: row-size-est | |
| 18:32 | Improvements to the LogEst command-line tool used to convert between ordinary numbers and the LogEst representation. check-in: 5252aeb6 user: drh tags: row-size-est | |
| 18:16 | Begin an experimental refactoring to estimate the average number of bytes in table and index rows and to use that information in query planner. Begin by renaming WhereCost to LogEst and making that type and its conversion routines available outside of where.c. check-in: 66c4a251 user: drh tags: row-size-est | |
| 02:56 | In the index_list pragma, make sure the "r" column is the same on output as it was on input in the sqlite_stat1 table. Closed-Leaf check-in: de78250a user: drh tags: index-scan-rate | |
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2013-10-04
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| 20:39 | Merge trunk changes. check-in: c6ac80ed user: drh tags: index-scan-rate | |
| 18:29 | Further refinements of the index scanning speed logic. check-in: e5d9371d user: drh tags: index-scan-rate | |
| 18:17 | If an "INSERT INTO ... SELECT" can use the xfer optimization, pass the OPFLAG_BULKCSR hint to btree cursors used to update indices. This results in a tighter key packing. check-in: 087af29e user: dan tags: trunk | |
| 15:58 | Fix test cases so that they work when the query planner uses index size estimates to determine whether or not to try an covering index scan. check-in: 2f394de8 user: drh tags: index-scan-rate | |
| 15:30 | Improved estimates of the relative speed of index scans based on declared datatypes of columns in the table. Add "r" column to PRAGMA index_info, showing the estimated relative scan rate. check-in: 07462bb6 user: drh tags: index-scan-rate | |
| 02:36 | Progress toward using the iScanRatio information on indices. Many tests are still failing. check-in: 6c352edb user: drh tags: index-scan-rate | |
| 00:00 | Make sure the count(*) optimization works correctly even when partial indices are present. Ticket [a5c8ed66cae]. check-in: 9f2f4c0a user: drh tags: trunk | |
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2013-10-03
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| 20:41 | Have FTS take advantage of "docid<?" constraints when they are present. Extend the FTS "incremental doclist" optimization so that it is used for tokens within multi-token phrases. check-in: baf8ce59 user: dan tags: trunk | |
| 20:28 | Merge latest trunk changes. Closed-Leaf check-in: 24aa20da user: dan tags: fts4-docid-range-constraints | |
| 19:27 | Allow FTS4 multi-token phrases to use a combination of in-memory and incrementally loaded doclists. This allows phrases to (partially) benefit from incremental doclists without disabling the deferred token optimization. check-in: f6819c5f user: dan tags: fts4-docid-range-constraints | |
| 19:21 | Experimental branch allowing different postulated scan rates for each index. check-in: d59d97b0 user: drh tags: index-scan-rate | |
| 15:39 | The sqlite3FixInit() routine cannot fail. So change the return type from "int" to "void". check-in: 500c5932 user: drh tags: trunk | |
| 14:08 | Rework the PRAGMA implementation to only call sqlite3ReadSchema() from a single place, based on a flag in the pragma table, rather than separately from each case which needs the schema. check-in: 8338232a user: drh tags: trunk | |
| 12:29 | Return an error if an attempt is made to create a trigger with an SQL variable embedded within it. If such a variable reference is found within a trigger definition loaded from the sqlite_master table, silently replace it with a NULL. check-in: f35f6ae3 user: dan tags: trunk | |
| 11:27 | Remove unnecessary memset() calls from test code. check-in: eec3187b user: drh tags: trunk | |
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2013-10-02
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| 20:46 | In the lemon parser generator, change all hashes to unsigned to avoid potential problems with signed integer overflow. check-in: 8d399a03 user: drh tags: trunk | |
| 08:04 | Add a test to check that the new multi-token phrase optimization is actually helping. check-in: bc3a2ed5 user: dan tags: fts4-docid-range-constraints | |
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2013-10-01
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| 20:29 | Bring some file format comments in btreeInt.h up to date. check-in: 012d54d0 user: drh tags: trunk | |
| 20:10 | Merge trunk changes with this branch. check-in: 65d9c6fa user: dan tags: fts4-docid-range-constraints | |
| 20:02 | Allow multi-token phrases to load doclists from the database incrementally. This allows queries that feature such phrases to benefit from the "docid<?" optimization. check-in: ea543f08 user: dan tags: fts4-docid-range-constraints | |
| 19:36 | Fix comments in the fast_vacuum.c demonstration program. check-in: e0db7b38 user: drh tags: trunk | |
| 19:02 | Add the "fast_vacuum.c" demonstration program to the tool/ subdirectgory. check-in: 2b60320d user: drh tags: trunk | |
| 15:30 | Change the ".dump" command in the command-line shell so that it COMMITs if there are database corruption errors but invokes ROLLBACK on any other kind of error. check-in: 47323463 user: drh tags: trunk | |
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2013-09-30
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| 19:33 | Fix a minor typo in a comment in where.c. check-in: 9c9fa151 user: drh tags: trunk | |
| 19:05 | Add some timing tests to the amatch test script. check-in: ad71c72b user: drh tags: trunk | |
| 18:16 | Merge trunk changes with this branch. check-in: e294a9c7 user: dan tags: fts4-docid-range-constraints | |
| 18:14 | Fix a performance problem in the FTS4 auxiliary functions triggered by an OR clause in the full-text query. check-in: fa0f2f0e user: dan tags: trunk | |
| 17:37 | Fix memory leaks in the amatch extension. Add a few simple test cases. check-in: 60413473 user: drh tags: trunk | |
| 11:42 | Have fts4 full-text queries consider "docid<?" and similar constraints. check-in: 6622424a user: dan tags: fts4-docid-range-constraints | |
| 11:01 | Update and modernize an obsolete comment associated with VACUUM. No changes to code. check-in: 94c914e3 user: drh tags: trunk | |
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2013-09-29
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| 04:56 | Fix typo in comment. No changes to code. check-in: 0b7bd468 user: mistachkin tags: trunk | |
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2013-09-28
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| 16:43 | Add new test file fts3defer3.test. check-in: a6cd14ef user: dan tags: trunk | |
| 13:28 | In the nextchar.c extension, allow the second argument to the next_char() function to be a subquery. check-in: 59b9fa22 user: drh tags: trunk | |
| 12:40 | Updates to the sqlite3_analyzer utility: Change the names of some labels, especially change "Fragmentation" to "Non-sequential pages". Revise the computation of non-sequential pages so that it ignores itercalated non-leaf pages (overflow and index pages). check-in: 3e5c7771 user: drh tags: trunk | |
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2013-09-26
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| 15:21 | Obtain the required shared-cache write-lock when executing "DELETE FROM tbl" statements. Fix for [1e1321ee98]. check-in: 1f8f4fdf user: dan tags: trunk | |
| 11:04 | Fix a faulty assert() in sqlite3BtreeBeginTrans() that may fail in shared-cache mode. check-in: 1e1321ee user: dan tags: trunk | |
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2013-09-24
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| 19:07 | Merge updates from trunk. check-in: 435ce3b3 user: mistachkin tags: toTypeFuncs | |
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2013-09-18
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| 11:16 | Test that the unicode61 tokenchars= and separators= options work with the fts3tokenize virtual table. check-in: ed240514 user: dan tags: trunk | |
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2013-09-17
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| 23:36 | Clear the current time value on prepared statements when the prepared statement is reset. check-in: cebd6fc5 user: drh tags: trunk | |
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2013-09-16
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| 20:46 | Readability improvements to the Win32 RC file. check-in: e6459062 user: mistachkin tags: trunk | |
| 19:27 | Minor consistency fixes to the Win32 RC file. check-in: 619c5211 user: mistachkin tags: trunk | |
| 12:57 | The date and time functions use the exact same notion of "now" for every invocation within the same call to sqlite3_step(). check-in: daf6ba41 user: drh tags: trunk | |
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2013-09-13
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| 23:27 | Fix Windows SDK compiler warning. check-in: d5fc3f1d user: mistachkin tags: trunk | |
| 23:26 | Fix test issues for Windows portability. check-in: 650b3282 user: mistachkin tags: trunk | |
| 22:38 | VSIX tooling changes to support Visual Studio 2013. check-in: d56fac40 user: mistachkin tags: trunk | |
| 21:03 | Fix the "const" qualifiers on the pragma name table. check-in: b74e6be8 user: drh tags: trunk | |
| 21:01 | Add the soft_heap_limit pragma. check-in: c326356f user: drh tags: trunk | |
| 19:08 | VSIX tooling changes to support Visual Studio 2013. Leaf check-in: e8ac4a12 user: mistachkin tags: branch-3.8.0 | |
| 19:00 | Tweak the new PRAGMA name parser to achieve full branch test coverage. check-in: c82e05c4 user: drh tags: trunk | |
| 18:15 | Remove one unreachable branch and add asserts() to dupedExprStructSize(). New asserts verify that removed branch is unused and that constants that are ORed together in the output do not overlap. check-in: 86ad358b user: drh tags: trunk | |
| 17:47 | Adjust the query planner to take into account WHERE clause terms that do not drive indices. Add the unlikely() and likelihood() functions used to give hints to the query planner about the selectivity of WHERE clause terms. check-in: bc446449 user: drh tags: trunk | |
| 16:56 | Enhance the pragma lookup table generator script to output a comment that gives the number of pragmas. check-in: ca052050 user: drh tags: trunk | |
| 16:36 | Change the PRAGMA parser to use a binary search for the pragma name. Also: Minor performance enhancement to sqlite3DbFree() and to the token dequoter. check-in: 870c030b user: drh tags: trunk | |
| 12:10 | Add tests for the fts4 unicode61 tokenchars and separators options. check-in: 9ce6f40d user: dan tags: trunk | |
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2013-09-12
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| 23:42 | Refactor the ExprSetIrreducible() macro into ExprSetVVAProperty(*,EP_NoReduce). This is a naming change only. The logic is the same. Closed-Leaf check-in: 695aee46 user: drh tags: unlikely-func | |
| 23:12 | Fix typo in a macro name: "GlogUpperToLower" should be "GlobUpperToLower" check-in: 73634ca4 user: drh tags: trunk | |
| 17:29 | Merge in the Expr.flags expansion to 32-bits. Use an extra bit to help optimize the sqlite3ExprSkipCollate() routine. check-in: 4c84d1b4 user: drh tags: unlikely-func | |
| 16:50 | Increase the number of bits available in Expr.flags. Other tweaks aimed at making expression processing more robust. Closed-Leaf check-in: 579a5125 user: drh tags: expr-tuning | |
| 02:09 | For error log messages generated by the Win32 native allocator, make sure the correct format specifier is used for the value returned by GetLastError(). check-in: 75a8a8c1 user: mistachkin tags: trunk | |
| 01:47 | Fix a couple more harmless compiler warnings. check-in: 59708674 user: mistachkin tags: trunk | |
| 01:33 | Remove two obsolete fields from the sqlite3 object. check-in: 117fa5fb user: drh tags: trunk | |
| 00:54 | Fix harmless compiler warning. check-in: 2b510614 user: mistachkin tags: trunk | |
| 00:40 | Merge updates from trunk. Closed-Leaf check-in: fca799f0 user: mistachkin tags: vsix2013 | |
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2013-09-11
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| 17:39 | Improvements to likelihood processing so that commuting an unindexed term in the WHERE clause does not change the query plan. check-in: 6e6bded0 user: drh tags: unlikely-func | |
| 14:57 | Add test cases to cover TPC-H Q8. check-in: eb5cef83 user: drh tags: trunk | |
| 14:34 | Additional unlikely() test cases. Logic tweaks to support test coverage. check-in: 5d00cce7 user: drh tags: unlikely-func | |
| 11:38 | Change the name of the two-argument unlikely() function to likelihood(). Add test cases. check-in: 29a359b8 user: drh tags: unlikely-func | |
| 03:53 | Tweaks to the index selection logic. check-in: 52d52688 user: drh tags: unlikely-func | |
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2013-09-10
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| 01:53 | Merge trunk fixes into the unlikely-func branch. check-in: a51d7515 user: drh tags: unlikely-func | |
| 01:41 | Deterministically initialize the PRNG used as a tie-breaker in the ANALYZE command, so that the analysis is always the same given the same database. This simplifies testing. check-in: 48ed8b56 user: drh tags: trunk | |
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2013-09-09
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| 19:37 | Make sure that the transitive constraint optimization does not cause WHERE clause terms to be disabled prematurely. We are unable to find a test case that fails because of this, but it seems prudent to make this preventative change nevertheless. check-in: d6e361d7 user: drh tags: trunk | |
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2013-09-07
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| 00:29 | Continuing refinements of the logic to take WHERE clause terms not used for indexing into account when computing the number of output rows from each table. check-in: b65dc534 user: drh tags: unlikely-func | |
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2013-09-06
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| 22:27 | Merge updates from trunk. check-in: 8922be1a user: mistachkin tags: toTypeFuncs | |
| 21:41 | Add the ability to generate assembly listing files using the MSVC makefile. check-in: 6caa2cd1 user: mistachkin tags: toTypeFuncs | |
| 20:30 | When converting from a BLOB value in the tointeger() and toreal() SQL functions, make sure that endianness of the machine does not matter. check-in: 94c4cdc5 user: mistachkin tags: toTypeFuncs | |
| 17:45 | Enhance the plan solver to take into account the number of output rows when computing the set of paths to retain for the next cycle. check-in: 1a46a724 user: drh tags: unlikely-func | |
| 15:23 | Initial implementation of the unlikely() SQL function used as a hint to the query planner. check-in: 036fc37a user: drh tags: unlikely-func | |
| 13:10 | Combine the FuncDef.iPrefEnc and FuncDef.flags fields into a single new FuncDef.funcFlags field. check-in: 97b10e66 user: drh tags: trunk | |
| 00:40 | Make sure the destination WhereLoop is left in a sane state when an OOM fault occurs inside of whereLoopXfer(). check-in: a99a53b8 user: drh tags: trunk | |
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2013-09-05
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| 18:40 | When preparing an UPDATE statement, avoid generating VDBE code for those foreign key related actions and constraint checks that may be seen to be unnecessary by considering the subset of table columns potentially modified by the UPDATE. check-in: e940b5de user: dan tags: trunk | |
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2013-09-04
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| 18:14 | Rearrange the order of conditions in an "if" statement to facilitate testing. check-in: 8462fb43 user: drh tags: trunk | |
| 16:38 | Add tests to improve coverage when SQLITE_ENABLE_STAT3 is defined. check-in: f929e9b4 user: dan tags: trunk | |
| 16:08 | Fix a bug in the command-line shell for ".mode insert" on UTF16 databases with BLOB values. check-in: d8fdc782 user: drh tags: trunk | |
| 15:15 | The sqlite3Stat4ProbeSetValue() routine should always return results using the database encoding. check-in: eb216632 user: drh tags: trunk | |
| 04:04 | Fix out-of-order variable declaration. Fix harmless compiler warning. check-in: 8df95bb0 user: mistachkin tags: trunk | |