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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

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100 check-ins occurring around e49279e65169a939.

2017-08-18
18:55
Add tests to this branch. check-in: abb6e076 user: dan tags: server-process-edition
16:09
For the unix VFS, avoid an unnecessary stat() system call prior to opening any file in the common case where there are no unused file descriptors. check-in: 3075cfa0 user: drh tags: trunk
16:04
Do not search for locks to clear when connecting to a db in multi-process mode unless it looks like the previous user of the client-id crashed. check-in: 66fb9e1c user: dan tags: server-process-edition
14:34
Combine the OP_CreateTable and OP_CreateIndex opcodes of the bytecode engine into a single OP_CreateBtree opcode. This simplifies the implementation and makes the bytecode programs clearer. check-in: eb1202b5 user: drh tags: trunk
08:29
Only use indexes on expressions to optimize ORDER BY and GROUP BY if the collation sequence matches. Possible fix for [e20dd54a]. check-in: 37e19008 user: dan tags: trunk
2017-08-17
20:53
Use the __builtin_clzll() function of gcc to improve the performance and reduce the size of the sqlite3LogEst() routine. check-in: a42a438c user: drh tags: trunk
19:32
Add support for crash recovery in multi-process mode. And add test cases for the same. check-in: a8115f95 user: dan tags: server-process-edition
19:23
Small optimization in the Expr tree walker. check-in: 264a5e1b user: drh tags: trunk
18:54
Size optimization in the authorizer error message generation logic. check-in: 0367a4d5 user: drh tags: trunk
18:23
In sqlite3ViewGetColumnNames(), return the number of errors, not an error code. check-in: f13682ea user: drh tags: trunk
18:17
The RTREE extension should return SQLITE_CORRUPT_VTAB, not just SQLITE_CORRUPT when it encounters incorrectly formatted shadow tables. check-in: 0712f057 user: drh tags: trunk
14:47
Remove an unnecessary branch from the [be436a7f4587ce517ddc] fix. check-in: fb6ca99b user: drh tags: trunk
14:12
Add test cases for ticket [be436a7f4587ce517] using virtual table modules fts5 and rtree. check-in: 2101b420 user: dan tags: trunk
02:26
Defer schema resets when the query planner is running. Proposed fix for ticket [be436a7f4587ce517]. check-in: a7bc7752 user: drh tags: trunk
2017-08-16
19:20
Avoid a test for CURTYPE_BTREE in sqlite3VdbeCursorMoveto() in order to reduce the size and improve the performance of OP_Column. check-in: f078deb2 user: drh tags: trunk
17:06
Update this branch with the latest changes from trunk. check-in: 380a7b7a user: dan tags: server-process-edition
16:52
Enhance this branch to support page-level-locking (without MVCC) for multi-process deployments. check-in: 04e0cb57 user: dan tags: server-process-edition
14:16
Remove an unnecessary local variable from OP_Column, for a small size reduction and performance increase. check-in: 39543903 user: drh tags: trunk
11:04
Performance improvement in the OP_Column opcode. check-in: dc98a92f user: drh tags: trunk
2017-08-15
14:14
Small size and performance improvement in the OP_Column opcode. check-in: 2cf3f3de user: drh tags: trunk
03:46
Btree optimization: New field BtCursor.pPage that points to the current page, saving a single pointer dereference on each access. check-in: 373b71d1 user: drh tags: trunk
01:07
Fix a problem allowing a conflicting transaction to be committed in the case where more than one 32KB shared-memory page has been written to since the transaction was started. check-in: 346a710d user: drh tags: begin-concurrent-branch-3.19
2017-08-14
23:53
Minor size and performance optimization to sqlite3BtreeCloseCursor(). check-in: 16969338 user: drh tags: trunk
18:13
Change the internal btree routine moveToRoot() to return SQLITE_EMPTY if the table is empty or if it has pgnoRoot==0. This simplifies the callers, making them smaller and faster. The SQLITE_EMPTY result code is intercepted and changed into SQLITE_OK before surfacing in an API. check-in: 240d5714 user: drh tags: trunk
17:03
Fix harmless indentation error. check-in: 25e92baa user: drh tags: trunk
14:53
Sometimes a TK_COLUMN Expr node can have Expr.pTab==0 if it is a reference to an expression column in an index on an expression. Fix for ticket [aa98619ad08ddcab]. check-in: d0da791b user: drh tags: trunk
07:16
Remove code for PLL support in wal mode from this branch. check-in: 8e1b28ed user: dan tags: server-process-edition
06:55
Update this branch with latest trunk changes. check-in: bc2498d6 user: dan tags: server-process-edition
01:33
Properly dequote column names in tables constructed by an aggregate SELECT. check-in: 7e0d3e9c user: drh tags: trunk
2017-08-12
18:31
Add new test file fts5vocab2.test. check-in: 02174842 user: dan tags: trunk
14:06
Add a more rigorous test case for the bug fixed by the previous commit on this branch. check-in: 42560723 user: dan tags: begin-concurrent
02:16
Update the speed-check.sh test script to append log output to the end of the cout-NAME.txt file. check-in: 14d262d6 user: drh tags: trunk
02:01
Remove the zBase field from the StrAccum object. Resulting code is slightly smaller and faster. check-in: 6e52fa5f user: drh tags: trunk
01:09
Size and performance micro-optimization on sqlite3SrcListIndexedBy(). check-in: 28a5aec1 user: drh tags: trunk
2017-08-11
21:16
Fix a problem allowing a conflicting transaction to be committed in the case where more than one 32KB shared-memory page has been written to since the transaction was started. check-in: 38dd9b50 user: dan tags: begin-concurrent
20:22
Add another PAGERTRACE() macro to show when pages are added to Pager.pAllRead. No impact on production builds. check-in: 11054cf5 user: drh tags: begin-concurrent
19:31
Add a PAGERTRACE() macro to log when frames are written into the WAL file. This is for analysis only and is a no-op for production builds. check-in: 39f39e3d user: drh tags: begin-concurrent
19:16
Merge the latest enhancements from trunk. check-in: 47e71695 user: drh tags: begin-concurrent
18:59
Fix compiler warnings that arise if the PAGERTRACE macro is turned on. This changes does not affect production builds. check-in: 831156a4 user: drh tags: trunk
18:55
Improved comments in the header of the LSM1 vtab module. No code changes. check-in: aa49926d user: drh tags: trunk
13:51
New test cases for LSM1. check-in: cb0c49cb user: drh tags: trunk
12:49
Convert the LSM1 virtual table to be WITHOUT ROWID and get UPDATE and DELETE operations working on it. check-in: 2164031b user: drh tags: trunk
03:47
Simplification to the like optimization logic. Remove unnecessary branches. check-in: 9466d952 user: drh tags: trunk
2017-08-10
20:43
Allow WITHOUT ROWID virtual tables to be writable as long as they have exactly one column as their PRIMARY KEY. check-in: c601d128 user: drh tags: trunk
20:36
Add the "instance" type to the fts5vocab virtual table module. For direct access to the contents of the fts5 term index. check-in: 34a7bd71 user: dan tags: trunk
19:12
Fix a typo in csv01.test introduced by the previous commit. Closed-Leaf check-in: f38ff718 user: dan tags: writable-vtab-without-rowid
19:10
Add extra tests to this branch. check-in: b0e3b88a user: dan tags: writable-vtab-without-rowid
17:53
Test case for writing to a WITHOUT ROWID virtual table. The TCLVAR virtual table is modified to add a "fullname" column which is the primary key, and to accept update operations against the primary key. check-in: 6997e00c user: drh tags: writable-vtab-without-rowid
15:19
Experimental changes that allow a WITHOUT ROWID virtual table to be writable as long as it has only a single-column PRIMARY KEY. check-in: ab9ee4c1 user: drh tags: writable-vtab-without-rowid
03:27
Add a first draft of the "vtablog" extensions that implements a generic virtual table useful for experimentation using the command-line shell. check-in: e49279e6 user: drh tags: trunk
2017-08-09
22:55
Preserve the error code from xConnect or xCreate methods in virtual table implementations when they are encountered during parsing. check-in: dcdf0913 user: drh tags: trunk
20:35
Add experimental sqlite3_open_v2() flag SQLITE_OPEN_REUSE_SCHEMA. For sharing identical in-memory schema objects between connections. check-in: a6256980 user: dan tags: reuse-schema
19:27
Various bug fixes for the new LSM1 virtual table design. check-in: 94434a25 user: drh tags: trunk
18:40
Work toward redesigning the interface to the LSM1 virtual table. check-in: 313df946 user: drh tags: trunk
2017-08-08
21:40
The identifier "vsnprintf" appears to be a reserved word in recent versions of XCode, so avoid using it as a structure field. check-in: 795eede3 user: drh tags: trunk
21:30
Fix a faulty signed/unsigned character comparison in the LIKE optimization logic. check-in: f4a4b149 user: drh tags: trunk
20:03
Enhance the CSV virtual table extension so that it accepts the last row of the CSV file even if the last row omits the closing \n, as long as the last row has a full set of columns. check-in: 537e3be2 user: drh tags: trunk
2017-08-07
19:12
Avoid casting a value larger than 2^31 to a (size_t) or (SIZE_T) on systems where it is a 32-bit type. check-in: b26d7a1c user: dan tags: trunk
19:06
On Windows, avoid casting a value larger than 2^31 to a (SIZE_T) on systems where it is a 32-bit type. Leaf check-in: f08d63b4 user: mistachkin tags: mmap-size-limit
18:54
Fix a problem with handling SQLITE_FCNTL_MMAP_SIZE requests with a negative parameter in os_unix.c. check-in: 4249fcf7 user: dan tags: mmap-size-limit
18:27
Update bigmmap.test to account for builds that use "-DSQLITE_MAX_MMAP_SIZE=<integer-constant>LL". check-in: 7c8b6f1c user: dan tags: mmap-size-limit
18:13
Avoid casting a value larger than 2^31 to a (size_t) on systems where it is a 32-bit type. check-in: 46c3085d user: dan tags: mmap-size-limit
17:28
Fix an out-of-order test number. check-in: 38f30091 user: mistachkin tags: trunk
17:14
Add new test file "bigmmap.test". For testing builds with -DSQLITE_MAX_MMAP_SIZE > 2GB. check-in: 17447062 user: dan tags: trunk
14:15
Update this branch with latest trunk changes. check-in: 17bc7ded user: dan tags: server-process-edition
14:06
Fix a bug on this branch involving mmap mode and readonly transactions. check-in: 355c594e user: dan tags: server-process-edition
2017-08-05
16:15
Fix a segfault in swarmvtab that could occur if there was an error in the SQL statement passed to the constructor. Add other test cases. check-in: 6ce8b7ca user: dan tags: trunk
15:49
Microoptimization in pcache1.c makes the code slightly smaller and faster. check-in: 422cd9f3 user: drh tags: trunk
15:30
Fix memory leak in swarmvtab. check-in: 002a9c7b user: dan tags: trunk
2017-08-04
20:27
Add the swarm virtual table to the existing union virtual table module. check-in: 0f6f6f03 user: drh tags: trunk
20:15
Add the optional non-found-callback to the swarm-vtab. Closed-Leaf check-in: a94e2f60 user: drh tags: union-vtab
17:39
Add further test cases for swarmvtab. And minor code changes. check-in: 0f82d3b9 user: dan tags: union-vtab
16:16
Add test cases and associated fixes for swarmvtab. check-in: 7ae20eac user: dan tags: union-vtab
08:24
Add SQLITE_API qualifiers to public API functions in header file sqlite3rbu.h. check-in: e11e6eb1 user: dan tags: trunk
08:23
Update script tool/mksqlite3c.tcl to avoid duplicating the SQLITE_API qualifier when copying sqlite3rbu.h into the amalgamation. Closed-Leaf check-in: 61ab112f user: dan tags: sqlite3rbu.h-fix
2017-08-03
20:13
Modify swarmvtab to use a separate database connection for each database file. check-in: 1f05ad29 user: dan tags: union-vtab
15:50
Add SQLITE_API qualifiers to public API functions in header file sqlite3rbu.h. check-in: d8637bad user: dan tags: sqlite3rbu.h-fix
15:43
Fix some problems in RBU test cases. Also update RBU source code to better handle the trivial case where an RBU update is applied to a database zero pages in size. check-in: 7676b39b user: dan tags: trunk
00:29
Optimization to the comparison opcodes in the byte-code engine. check-in: 654935c7 user: drh tags: trunk
2017-08-02
22:43
In the KeyInfo object, refactor the nField and nXField elements into nKeyField and nAllField, which are more useful and run a little faster. check-in: aea5990e user: drh tags: trunk
19:59
Enhance the code in unionvtab.c to also provide the "swarmvtab" virtual table module. There are still several problems on this branch. check-in: 03d94388 user: dan tags: union-vtab
19:04
Avoid redundant calls to sqlite3ApiExit() in sqlite3_step(). check-in: 527974d4 user: drh tags: trunk
18:28
Only attempt to invoke WAL callbacks when a transaction has committed. check-in: bcc6dacb user: drh tags: trunk
18:27
Minor optimization on clearCell() check-in: f3c39c29 user: drh tags: trunk
15:50
Optimizations associated with error handling in btree cursors. check-in: 49ba54e2 user: drh tags: trunk
12:38
Remove unused token codes. check-in: c45078c0 user: drh tags: trunk
11:36
Rearrange some of the added token codes for a very slight size decrease and performance increase. check-in: cb3742f5 user: drh tags: trunk
11:04
Rearrange integer token values in the parser and logic in the resolveP2Values() routine for a small size reduction and performance increase. check-in: 1cad2926 user: drh tags: trunk
03:21
Show which opcodes are jumps in the comments when generating the opcodes.h header file. check-in: eef643a3 user: drh tags: trunk
03:21
Add the "%token" control to the lemon parser. Not currently used by SQLite. check-in: a6e4c5ae user: drh tags: trunk
02:46
Faster implementation of resolveP2Values(). check-in: 82e46fe0 user: drh tags: trunk
2017-08-01
20:59
Slightly smaller and faster by allocating Parser objects on the stack. check-in: 436a89b9 user: drh tags: trunk
19:53
Split the OP_Last opcode into OP_Last and OP_SeekEnd. Use OP_SeekEnd to position a cursor prior to appending. Ticket [cb91bf4290c211d]. check-in: 3e02474c user: drh tags: trunk
14:16
Take advantage of atomic-write capabilities in the F2FS filesystem when the database is stored on such a filesystem. This is a compile-time option activated using SQLITE_ENABLE_BATCH_ATOMIC_WRITE. check-in: 24190b22 user: drh tags: trunk
13:54
Merge recent enhancements from trunk. check-in: aafe1fec user: drh tags: begin-concurrent
13:24
Version 3.20.0 check-in: 9501e22d user: drh tags: release, branch-3.20, version-3.20.0
00:20
Allow ATTACH and DETACH inside of a transaction. check-in: 95e8f316 user: drh tags: trunk
2017-07-31
20:06
TclKit batch tool updates for MSVC. Cherrypick of [bcec155e0d6c6b17] and [0c77935cf9949099]. check-in: 96ff1675 user: mistachkin tags: branch-3.20
19:55
Add documentation file ./README-server-edition.html. check-in: fbc4f4ad user: dan tags: server-process-edition
19:39
Recognize 'AMD64' as 'x64' in the TclKit batch tool for MSVC. check-in: 0c77935c user: mistachkin tags: trunk