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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 ancestors of [280fd3a4]

2015-09-09
17:23
Fix harmless compiler warning. check-in: 280fd3a4 user: mistachkin tags: trunk
17:17
Fix harmless compiler warnings in FTS5. check-in: 2cdb1877 user: mistachkin tags: trunk
13:28
When running a CREATE TABLE AS, make the initial temporary sqlite_master entry for the new table a real record rather than a NULL, in case the query after the AS actually tries to read the sqlite_master table. Fix for ticket [acd12990885d9276]. check-in: 4a18d8bd user: drh tags: trunk
2015-09-08
21:16
Remove an unused local variable from Lemon. check-in: fe9ffe5e user: drh tags: trunk
21:12
Enhance the DBSTAT virtual table with a new hidden table "schema" that if set will cause the table to report on the specified schema rather than on "main". Also: Fix a faulty assert in sqlite3_context_db_handle(). check-in: 6beb512c user: drh tags: trunk
20:26
Eponymous virtual tables exist in the "main" schema only. Enforce this rule. check-in: 06f90bb2 user: drh tags: trunk
17:31
Fix the help message that sqlite3_analyzer.exe generates for invalid arguments. check-in: 33a14e7b user: drh tags: trunk
2015-09-07
23:40
Minor tweaks to Lemon. check-in: 98667722 user: drh tags: trunk
20:11
Enhance the Lemon parser generator to add SHIFTREDUCE states that reduce the sizes of some of the parser tables. check-in: 99b992fa user: drh tags: trunk
20:02
Fix an unreachable branch in the new parse automaton. Closed-Leaf check-in: e9d604b4 user: drh tags: lemon-update
19:52
Change the parser engine so that it (once again) waits for a lookahead token before reducing, even in a SHIFTREDUCE action. check-in: 2c17a135 user: drh tags: lemon-update
18:23
For the Lemon-generated parser, add a new action type SHIFTREDUCE and use it to further compress the parser tables and improve parser performance. check-in: 531c3974 user: drh tags: lemon-update
14:22
In the "parse.out" output file from Lemon, show addition the complete text of rules on reduce actions. check-in: b6ffb7e4 user: drh tags: trunk
02:23
Improved "Parser Statistics" output (the -s option) for the Lemon parser generator. check-in: 809503e4 user: drh tags: trunk
2015-09-06
10:31
Improved memory barrier that should work with MinGW on older versions of Windows. check-in: 47dc24bd user: drh tags: trunk
02:51
Add a memory barrier to the mutex initialization logic, try to work around an issue reported by WebKit. check-in: 11a9a786 user: drh tags: trunk
2015-09-05
22:36
Omit all use of Expr nodes for TK_AS, as those nodes no longer served a useful purpose and in fact interferred with the query planner. check-in: 7ab0b258 user: drh tags: trunk
19:21
Fix an unreachable conditional in the WHERE clause analysis logic. check-in: 24924a58 user: drh tags: trunk
19:07
Get STAT4 range scan estimates work again when the bounds are determined by date/time functions. check-in: d2761357 user: drh tags: trunk
2015-09-04
18:03
Fix over-length source code lines in Lemon. check-in: 1efece95 user: drh tags: trunk
17:32
Add support for CREATE INDEX statements that use deterministic expressions rather than only column names. check-in: 2131a5ca user: drh tags: trunk
13:02
Merge trunk enhancements, and espeically the fix for allowing strings as column identifers in CREATE INDEX statements. Closed-Leaf check-in: 5ff85529 user: drh tags: index-expr
12:54
Continue to support the (broken) legacy syntax of allowing strings for column names in CREATE INDEX statements and in UNIQUE and PRIMARY KEY constraints. check-in: 3d3df79b user: drh tags: trunk
11:13
Enhance showfts5.tcl so that it can optionally display the number of terms in each segment. check-in: d648ddd9 user: dan tags: trunk
10:31
Modify the fts5 custom tokenizer interface to permit synonym support. The fts5_api.iVersion value is now set to 2. Existing fts5 custom tokenizers (if there are such things) will need to be updated to use the new api version. check-in: 0b7e4ab8 user: dan tags: trunk
10:24
Merge latest trunk changes. Closed-Leaf check-in: 443a5eb8 user: dan tags: fts5-incompatible
04:31
Simplification of the LRU list handling in pcache1. check-in: 05a3a2cd user: drh tags: trunk
2015-09-03
20:43
Change the pcache module to keep track of the total number of references to all pages rather than the number of pages references, for a performance improvement and size reduction. check-in: f00a9e1e user: drh tags: trunk
19:48
Rearrange code in fts5_expr.c so that synonym support does not slow down the common case. check-in: 80188281 user: dan tags: fts5-incompatible
18:57
Merge enhancements from trunk. check-in: 4b49fe99 user: dan tags: fts5-incompatible
18:20
A simple optimization and size reduction in sqlite3PagerAcquire(). check-in: 618d8dd4 user: drh tags: trunk
18:05
Add documentation for fts5 synonym support. check-in: 58aa1f43 user: dan tags: fts5-incompatible
17:54
Change the Pager.hasBeenUsed flag into Pager.hasHeldSharedLock in order to take it off the critical path in sqlite3PagerAcquire(). check-in: b79096be user: drh tags: trunk
15:37
Add tests to improve coverage of fts5_varint.c. check-in: 89f24f31 user: dan tags: fts5-incompatible
14:22
Remove some more code from fts5_index.c by consolidating similar functions. check-in: 59ae30b9 user: dan tags: fts5-incompatible
14:18
Merge enhancements from trunk. check-in: 1ab10cbf user: drh tags: index-expr
13:46
Add the sqlite3VdbeLoadString() and sqlite3VdbeMultiLoad() routines to help with code generation, especially on PRAGMAs. Rename sqlite3VdbeAddGoto() to just sqlite3VdbeGoto(). check-in: 847387ec user: drh tags: trunk
11:17
Remove dead code from fts5_index.c. check-in: 8a0a9b01 user: dan tags: fts5-incompatible
11:00
Fix the fts5 integrity-check so that it works with columnsize=0 tables. check-in: 11b887b1 user: dan tags: fts5-incompatible
10:27
Fix a memory leak in fts5_expr.c. check-in: 399932a1 user: dan tags: fts5-incompatible
04:28
Factor out and simplify code in pragma.c for pragmas that return a single row with a single column that is an integer or text value. check-in: d7f4bdf5 user: drh tags: trunk
03:29
For PRAGMAs, factor out the code that sets the result set column names into a subroutine. check-in: 0ea6e5c9 user: drh tags: trunk
2015-09-02
21:00
Optimizations to the printf formatter. check-in: a3b35dde user: drh tags: trunk
19:48
Further tests to raise coverage of fts5 synonym code to 100%. Fix a dropped error code in the same. check-in: bdedd838 user: dan tags: fts5-incompatible
18:56
Fix an issue with fts5 synonyms and NEAR(...) queries. check-in: f2e59070 user: dan tags: fts5-incompatible
18:40
Add and use the sqlite3VdbeChangeOpcode() routine. Simplify the implementation of the other sqlite3VdbeChange*() routines. check-in: 0a5b00e4 user: drh tags: trunk
18:19
Add the sqlite3VdbeAddGoto(v,i) routine as a shorthand for sqlite3VdbeAddOp2(v,OP_Goto,0,i). check-in: be78f413 user: drh tags: trunk
17:55
Change sqlite3_sql() so that it always returns the SQL text of the prepared statement, if the text is available, even if the the prepared statement was generated using sqlite3_prepare() instead of sqlite3_prepare_v2(). Also include some minor comment fixes and code simplifications. check-in: 2f5472cf user: drh tags: trunk
17:34
Fix a problem with fts5 synonyms and phrase queries. Also fix an OOM handling bug in fts5. check-in: a4c35fa2 user: dan tags: fts5-incompatible
16:51
Small simplification to the EXPLAIN QUERY PLAN logic. check-in: d1592d20 user: drh tags: trunk
15:37
Use sqlite3XPrintf() instead of sqlite3StrAccumAppend() in a few places for better performance and a smaller footprint. check-in: 82355e41 user: drh tags: trunk
14:56
The sqlite3_memory_alarm() interface has been deprecated and undocumented for almost 8 years (since version 3.5.3). Change it into a no-op. check-in: 5d3f5df4 user: drh tags: trunk
14:17
Fix a problem handling OOM conditions within fts5 queries that feature synonyms. check-in: 11fa9808 user: dan tags: fts5-incompatible
08:22
Fix a problem with fts5 synonyms and the xQueryPhrase() auxiliary function API. check-in: cf3e45e7 user: dan tags: fts5-incompatible
2015-09-01
23:51
Very minor optimizations in the unix VFS. check-in: 6db3ff45 user: drh tags: trunk
22:29
Performance improvement in sqlite3VarintLen(). check-in: adf9fefb user: drh tags: trunk
20:09
Small size reduction and performance increase in sqlite3DbMallocSize(). check-in: 8a80967f user: drh tags: trunk
19:51
Reduce the number of calls to sqlite3BeginBenignMalloc(). check-in: 0bee6583 user: drh tags: trunk
18:44
Fix a problem that occurs when more than 4 synonyms for a term appear within a single row. check-in: cd359550 user: dan tags: fts5-incompatible
18:08
Add tests for fts5 synonyms implemented by adding extra terms to queries. And fixes for the same. check-in: dbcb7380 user: dan tags: fts5-incompatible
13:17
Rename SQLITE_FUNC_VARYING to SQLITE_FUNC_SLOCHNG - a more descriptive name for what that bit means. check-in: ff5137a6 user: drh tags: index-expr
00:42
Remove unreachable branches. check-in: fd4da231 user: drh tags: index-expr
2015-08-31
23:09
Fix a bug in error reporting when a UNIQUE index on expressions fails its uniqueness test. check-in: 5a2c0e90 user: drh tags: index-expr
21:16
Not only date/time functions, but also functions like sqlite_version() and changes() need to be prohibited from use inside of indexes. check-in: 48713130 user: drh tags: index-expr
20:06
Begin changes to allow synonym support by adding multiple terms to a query (an alternative to adding multiple terms to the FTS index). check-in: ad7feaed user: dan tags: fts5-incompatible
19:38
Always assume that indexed expressions can generate a NULL. Get indexed expressions working for the case of two or more expressions in the same index. check-in: cc60321a user: drh tags: index-expr
18:13
Case should not be significant when comparing function names. check-in: e2f1caf1 user: drh tags: index-expr
17:34
Make the distinction between truly deterministic functions and date/time functions which only return the same answer for a single query. Only truly deterministic functions are allowed in indexes. Add new expression index test cases. check-in: c77554b5 user: drh tags: index-expr
15:58
Improved analysis and usage of indexed expressions in the query planner. check-in: f8893696 user: drh tags: index-expr
14:27
Merge the latest enhancements from trunk. check-in: 7bde6d4d user: drh tags: index-expr
2015-08-29
19:41
Enhance the json_extract() function so that if given multiple PATH arguments it will return a JSON array with all of the answers. Also update comments within the json1 extension to reflect stricter interpretation of JSON and PATH arguments. check-in: 1da60c3d user: drh tags: trunk
19:03
Link the json1 extension into the command-line shell by default. check-in: 2e8e239c user: drh tags: trunk
18:46
Add a test for an fts5 tokenizer that supports synonyms by adding multiple entries to the fts index. check-in: 98d07d16 user: dan tags: fts5-incompatible
18:30
New test cases for the json1 extension. check-in: daff4832 user: drh tags: trunk
17:22
Fix the build with -DSQLITE_OMIT_VIRTUALTABLE. check-in: 752918de user: drh tags: trunk
16:02
Do not consider an empty string to be valid JSON. Add some additional JSON test cases. check-in: fd19ff02 user: drh tags: trunk
15:44
Another change to the fts5 tokenizer API. check-in: fc718684 user: dan tags: fts5-incompatible
00:54
Change the json1.c module so that it throws an error if any of the JSON selector paths are malformed. check-in: 3aa0855f user: drh tags: trunk
2015-08-28
20:07
Back out the json_check() routine. Instead, throw an error if the input to a json function (other than json_valid()) is not valid JSON. check-in: dc9ce7b1 user: drh tags: trunk
19:56
Change the fts5 tokenizer API to allow more than one token to occupy a single position within a document. check-in: 90b85b42 user: dan tags: fts5-incompatible
16:41
Fix compiler warnings in rbu code. check-in: 0fdc36fe user: dan tags: trunk
16:18
When searching the wal file for a frame, do not search that part that was already checkpointed when the transaction was opened. check-in: a84cf4f5 user: dan tags: trunk
15:50
Merge latest trunk into this branch. Closed-Leaf check-in: ab93024d user: dan tags: wal-read-change
03:48
Add the json_check() function, which returns its argument if the argument is well-formed JSON or which throws an error otherwise. check-in: 64abb65d user: drh tags: trunk
03:33
Enhance the json_insert(), json_replace(), and json_set() functions with the ability to add JSON instead of text if the argument is text and if the PATH begins with '$$' instead of just '$'. check-in: 44f103d8 user: drh tags: trunk
2015-08-27
23:42
Fix the OR-optimization so that it always ignores subplans that do not use an index. check-in: cf452028 user: drh tags: index-expr
23:18
Fix the OR-optimization so that it always ignores subplans that do not use an index. check-in: 66f92a16 user: drh tags: trunk
20:33
Fix EXPLAIN QUERY PLAN output for indexed-expressions. Fix another obscure fault in the WHERE term scanner. check-in: 73d361ce user: drh tags: index-expr
19:56
Fix problems in the indexed-expression handling in the optimizer. check-in: 03375017 user: drh tags: index-expr
18:24
Activate the ability to use expressions in indexes in a query. There are some test failures, but mostly this seems to work. check-in: 42f93f58 user: drh tags: index-expr
16:07
Merge changes from trunk. check-in: c80e9e8e user: drh tags: index-expr
15:58
Adjustments to the WHERE term scanning, to better handle scanning terms of an index. check-in: 5611130a user: drh tags: index-expr
2015-08-26
21:08
Reduce the size of the WhereScan object by 24 bytes while also clarifying its operation. check-in: cbc3c9a8 user: drh tags: trunk
18:04
Merge enhancements from trunk. check-in: ec6ddb3d user: drh tags: index-expr
14:01
Evaluate expressions only once when the same expression is used in both the result set and in the ORDER BY clause. check-in: c2f3bbad user: drh tags: trunk
11:40
Refactor With.a.zErr into With.a.zCteErr. No logic changes. check-in: 58ba7363 user: drh tags: trunk
11:34
Update the TreeView output for compound SELECT statements so that all entries are shown vertically aligned rather than each successive entry being indented. check-in: 65a89187 user: drh tags: trunk
2015-08-25
19:42
Move sqlite3IndexColumnAffinity() inside of SQLITE_ENABLE_STAT3_OR_STAT4. check-in: b3732a4e user: drh tags: trunk
19:24
Merge trunk enhancements. check-in: e8b02902 user: drh tags: index-expr
19:20
Use the sqlite3IndexColumnAffinity() routine to quickly and correctly find the affinity of an index column. check-in: 1ee089a7 user: drh tags: trunk
16:57
Add code to maintain indexes with expression arguments across DELETE, INSERT, and UPDATE statements. Legacy tests pass, but the new code paths are still largely untested. The query planner currently makes no effort to use expression indexes. check-in: efaabdb7 user: drh tags: index-expr