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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 900464567b2a5ce0.

2019-09-16
12:08
Merge recent trunk enhancements into the begin-concurrent branch. check-in: 93b9ef3f user: drh tags: begin-concurrent
12:02
Merge the latest changes from trunk into the apple-osx branch. check-in: a95191de user: drh tags: apple-osx
05:34
Fix a problem with processing CTEs that use a WINDOW clause. check-in: ca564d4b user: dan tags: trunk
2019-09-14
16:44
Add the --no-rowids option to the ".recover" command. check-in: 01d71b94 user: dan tags: trunk
16:21
Extra comments on fields of the Window object. check-in: 3dbed162 user: drh tags: trunk
00:21
Fix the windows inverse function on the JSON aggregates. check-in: f464d847 user: drh tags: trunk
2019-09-13
20:42
Fix a problem with using json1 window functions with an EXCLUDE clause. check-in: 4a197881 user: dan tags: trunk
18:59
Fix the windowB test module so that it works even if SQLite is built without JSON support. check-in: 807975c7 user: drh tags: trunk
18:27
Add the SQLITE_SUBTYPE flag, which may be passed to sqlite3_create_window_function() to indicate that the window function uses sqlite3_value_subtype() to check the sub-type of its arguments. check-in: ba2ebc3a user: dan tags: trunk
17:36
Change the meaning of the SQLITE_SUBTYPE flag so that it indicates that the function may use sqlite3_value_subtype() on its arguments. Closed-Leaf check-in: 7f424ec9 user: dan tags: window-functions-subtype-fix
17:30
Fix a typo in the carray extension header comment - the comment that serves as the documentation to this extension. check-in: 658a42d3 user: drh tags: trunk
17:05
Change the meaning of the SQLITE_SUBTYPE flag so that it indicates that the user-defined function cares about the subtypes of its arguments. Closed-Leaf check-in: af1bc20f user: dan tags: window-functions-subtype-fix2
16:19
Merge latest trunk changes with this branch. check-in: 14ef7543 user: dan tags: window-functions-subtype-fix
13:23
Ensure that the idxStr for FTS5 is always zero-terminated. Fix for check-in [9d418a7a491761ee] check-in: 090cd07d user: drh tags: trunk
12:24
Fix harmless compiler warnings. check-in: a8927d14 user: drh tags: trunk
2019-09-12
19:38
Allow fts5 to filter on multiple MATCH clauses in a single scan. check-in: 9d418a7a user: dan tags: trunk
2019-09-11
15:25
Fix typo for one instance of line number handling in the Lemon tool. check-in: 980be173 user: mistachkin tags: trunk
2019-09-10
17:51
Enhance treeview to show SOFT-COLLATE for TK_COLLATE operators that omit the EP_Collate flag. check-in: a9780462 user: drh tags: trunk
15:33
Ensure the columns of views and sub-queries maintain their implicit collation sequences when the "push-down" optimization is applied. Fix for [18458b1a]. check-in: 36997c4a user: dan tags: trunk
2019-09-09
20:17
Ensure the columns of views and sub-selects in the FROM clause of a select are always assigned implicit collation sequences, just as table columns are. Fix for [a7debbe0]. check-in: b9ec7220 user: dan tags: trunk
19:49
Ensure the columns of views and sub-selects in the FROM clause of a select are always assigned implicit collation sequences, just as table columns are. Possible fix for [a7debbe0]. Closed-Leaf check-in: 1863b7bf user: dan tags: tkt-a7debbe0.
2019-09-07
18:20
Add the SQLITE_SUBTYPE flag, which can be passed to sqlite3_create_function() and similar to indicate to the core that a user function is likely to use sqlite3_result_subtype(). check-in: 6aa438ce user: dan tags: window-functions-subtype-fix
2019-09-04
06:56
Fix handling of NULL, text and blob values in window queries that use "RANGE BETWEEN A FOLLOWING AND B FOLLOWING", or "B PRECEDING AND A PRECEDING", where A>B. check-in: cb3e2be6 user: dan tags: trunk
2019-09-03
19:40
Fix a buffer overread that could occur when running fts5 prefix queries inside a transaction. Leaf check-in: b54aa18b user: dan tags: branch-3.18
19:29
Fix a buffer overread that could occur when running fts5 prefix queries inside a transaction. Leaf check-in: b584fd36 user: dan tags: branch-3.9
18:43
Fix a buffer overread that could occur when running fts5 prefix queries inside a transaction. Leaf check-in: 0770363b user: drh tags: branch-3.19
18:36
Fix a buffer overread that could occur when running fts5 prefix queries inside a transaction. Leaf check-in: 68b89838 user: drh tags: branch-3.22
18:04
Disable the undocumented rtreenode() SQL function that is only used for testing, except when doing a build that is specifically intended for testing. check-in: 8452fd54 user: drh tags: branch-3.22
17:55
Disable the undocumented rtreenode() SQL function that is only used for testing, except when doing a build that is specifically intended for testing. check-in: 34cd2d92 user: drh tags: branch-3.19
17:46
Disable the undocumented rtreenode() SQL function that is only used for testing, except when doing a build that is specifically intended for testing. check-in: 0a1cce49 user: drh tags: branch-3.18
17:39
Disable the undocumented rtreenode() SQL function that is only used for testing, except when doing a build that is specifically intended for testing. check-in: 7b4583f9 user: drh tags: branch-3.9
16:23
Updates to the default settings in Makefile.linux-gcc. check-in: 3044cf69 user: drh tags: trunk
14:27
When we play games with COLLATE in order to commute an operator in the WHERE clause processing, be sure not to use the commuted operator to qualify a partial index, as insufficient COLLATE information is preserved to verify that the expression will correctly qualify the index. Ticket [767a8cbc6d20bd68] check-in: 5351e920 user: drh tags: trunk
2019-09-02
22:13
Fix a bug introduced earlier today by check-in [88833a9c2849c959]. Ticket [29f635e0af71234b] check-in: 6e7b4527 user: drh tags: trunk
14:46
Fix a potential crash in fts5 caused by using an auxiliary function on a "special" query like '*id' or '*reads'. check-in: 9490683a user: dan tags: trunk
02:21
When applying the IN_INDEX_NOOP optimization and the LHS has REAL affinity, also apply REAL affinity to each element of the RHS. Ticket [2841e99d104c6436]. check-in: 88833a9c user: drh tags: trunk
01:25
Fix an obsolete comment that defines the meaning of one of the parameters to the sqlite3FindInIndex() subroutine. No changes to code. check-in: 0c946f08 user: drh tags: trunk
00:58
When computing an expression value for an index-on-expression or a CHECK constraint and the expressions uses a REAL table column, but the value of that column is an integer (in other words, when it is using the store-real-as-integer optimization) be sure to promote the value to real before evaluating the expression. Ticket [57af00b6642ecd68]. check-in: 0658c16e user: drh tags: trunk
2019-09-01
23:36
Remove an obsolete paragraph from the OP_Column documentation. No code changes. check-in: f6d8956c user: drh tags: trunk
2019-08-31
20:29
Fix a harmless compiler warning. check-in: 63c67a54 user: drh tags: trunk
20:26
Mark new VDBE branches never taken. check-in: 83c2adff user: drh tags: trunk
20:13
Improvements to the algorithm that determines which SELECT in a sequence of nested SELECT statements that an aggregate function belongs to. This resolves an issue identified by dbsqlfuzz. check-in: d7680074 user: drh tags: trunk
17:14
If a DELETE trigger fired by an UPDATE OR REPLACE statement deletes the row being updated, do not attempt to proceed with the original UPDATE operation. Fix for [d6a0fbc1]. check-in: 4145b3e0 user: dan tags: trunk
01:33
Remove some affinity tests that became unreachable due to the prior change. check-in: e2db1123 user: drh tags: trunk
2019-08-30
23:56
When the affinity of a table column is INT or REAL, make the affinity of corresponding index columns NUMERIC. This increases the precision of index lookups for large numbers so that it matches the precision of ordinary comparison operators. Ticket [40812aea1fde9594] check-in: e0d909c7 user: drh tags: trunk
23:15
Make sure OP_RealAffinity has been applied to all columns of type REAL in the excluded.* pseudo-table of an UPSERT. Ticket [5a3dba8104421320] check-in: 67381dad user: drh tags: trunk
21:52
Improvements to VDBE tracing. No changes to code in normal deliverables. check-in: 54553bf1 user: drh tags: trunk
19:45
Add test case to window8.test. Also fix an error in a comment in window.c. check-in: 2925bfa5 user: dan tags: trunk
18:02
Back out the change at [47cd634c98b502d4] which was incorrect. Add a test case so that we don't accidently back out that change again. check-in: 596ac2a4 user: drh tags: trunk
17:28
Add further comments to window.c. check-in: 90046456 user: dan tags: trunk
16:46
New test cases for window functions with RANGE BETWEEN and DESC NULLS FIRST. check-in: f7002f86 user: drh tags: trunk
16:14
Fix a bug in RANGE window functions that use "ORDER BY <expr> DESC NULLS FIRST" as the window-frame ORDER BY clause. check-in: 39b4cad4 user: dan tags: trunk
16:00
The expression "(X IS FALSE) IN (FALSE)" does not imply that X is NOT NULL. Ticket [f8f472cbc77ba9c9] check-in: dd661348 user: drh tags: trunk
15:11
The expression "(X IS FALSE) BETWEEN FALSE AND TRUE" does not implie that X is not NULL. Ticket [fba33c8b1df6a915] check-in: 057fb8b1 user: drh tags: trunk
13:07
The expression "(x IS FALSE) IS FALSE" does not imply that X is not NULL. Ticket [a6408d42b9f44462] check-in: 45ff2b1f user: drh tags: trunk
2019-08-29
23:24
Remove a faulty testcase() macro. check-in: 80124ae5 user: drh tags: trunk
21:16
Improve vdbe branch coverage of NULLS LAST code. check-in: e8e9f77d user: dan tags: trunk
19:34
Fix other problems similar to ticket [c0390363]. check-in: 96ff2ba9 user: dan tags: trunk
16:48
Add a missing VdbeCoverage() macro. check-in: 33da6092 user: drh tags: trunk
16:17
Remove an unreachable branch in the NULLS LAST logic of RANGE window functions. check-in: 47cd634c user: drh tags: trunk
15:50
Fix another case where SQLite assumes that if "~(? AND FALSE)" is true, "?" must be non-null. check-in: 616f5663 user: dan tags: trunk
15:06
Avoid assuming that for "~ (? AND FALSE)" to be true, "?" must not be NULL, just as we do for "NOT (? AND FALSE)". Fix for ticket [c0390363]. check-in: 84ae41fd user: dan tags: trunk
14:25
Fix a potential buffer overrun in fts5 caused by corrupted database records. check-in: c465d0eb user: dan tags: trunk
00:27
Improve Lemon so that it enlarges some of its tables slightly in order to avoid having to index range checks on table lookups for a performance increase. check-in: 4be6a23a user: drh tags: trunk
2019-08-28
11:49
Fix an unreachable branch in sqlite3ParserFallback() Closed-Leaf check-in: e059178b user: drh tags: lemon-optimization
11:31
Further improvements to parser speed by enlarging lookup tables to eliminate the need to do range checking on the index prior to lookup. check-in: 47d3e091 user: drh tags: lemon-optimization
02:09
Increase the size of the yy_lookahead table so that it is never necessary to down bounds checking on the index. check-in: bafd8723 user: drh tags: lemon-optimization
2019-08-27
19:59
Add support for "ORDER BY ... NULLS FIRST" and "ORDER BY ... NULLS LAST". Use this to fix ticket [f8a7060e]. check-in: 94085fb3 user: dan tags: trunk
17:59
The ALWAYS() added by the previous check-in was incorrect. Take it back out. check-in: 336235db user: drh tags: trunk
17:28
Add ALWAYS() to an always true conditional that results from the previous check-in. Add a test case for ticket [dbaf8a6820be1ece] to supplement those already checked into TH3. check-in: aff20980 user: drh tags: trunk
17:01
Omit the "x IN (y)" to "x==y" optimization of check-in [e68b427afbc82e20] (and ticket [e39d032577df6942]) as it causes difficult affinity problems as demonstrated by ticket [dbaf8a6820be1ece] and the original assertion fault is no longer a factor due to countless other changes of the previous 5 years. check-in: 7f5168a7 user: drh tags: trunk
10:05
If a TEMP TRIGGER references an auxiliary schema, and that auxiliary schema is detached, move the trigger to reference the TEMP schema before completing the detach, so that the trigger does not hold a dangling schema pointer. Ticket [ac8dd4a32ba4322f] check-in: 069c2f4c user: drh tags: trunk
2019-08-26
20:41
Merge in recent fixes from trunk. Closed-Leaf check-in: ad816d01 user: drh tags: nulls-last
14:57
Tweak the shell tool ".recover" command so that it can recover rows that consist of a rowid and no fields. check-in: 279ac7fd user: dan tags: trunk
14:18
Improved detection of number of column mismatch for vector assignment in UPDATE statements. Ticket [78acc9d40f0786e8] check-in: bd4bda73 user: drh tags: trunk
13:45
Fix typo in a comment. No code changes. check-in: d0cc06d8 user: drh tags: trunk
12:50
Enforce 80-character line discipline in the CLI. Minor improvements to the CLI built-in help. check-in: 9690013a user: drh tags: trunk
2019-08-24
21:02
Minor performance improvement for balance_nonroot(). check-in: d7434cae user: dan tags: trunk
17:11
Fix a potential buffer overrun in fts5 caused by corrupt database records. check-in: 156d6128 user: dan tags: trunk
2019-08-23
23:05
Fix the built-in edit() SQL function in the CLI so that it works with zero-length blobs. check-in: e3249012 user: drh tags: trunk
21:11
Attempt to parse the NULLS LAST clause more efficiently. A few cycles were saved, but at the expense of more code. And there is a bug was introduced somewhere. Not worth continuing down this line. Closed-Leaf check-in: 12d2cf88 user: drh tags: dead-end
20:33
Move some things in parse.y so that TK_COLUMN and TK_AGG_COLUMN are assigned the same values as they are on trunk for a very small speedup. check-in: d26fdfa3 user: dan tags: nulls-last
17:09
Revise the VDBE comments for NULL-scan so that they also work make sense when reading a NULLS FIRST plan. check-in: bfe79378 user: drh tags: nulls-last
17:00
Additional simplifications of the WHERE loop code generator logic for NULLS LAST. check-in: 1383680d user: drh tags: nulls-last
16:12
Simplification of the WHERE loop code generator for NULLS LAST saves a few CPU cycles and about a hundred bytes of code space. check-in: e3ed2f49 user: drh tags: nulls-last
13:32
Invert the meaning of the regBignull flag so that it is 1 when doing the normal scan and 1 when scanning nulls. This enables the re-do jump at the bottom of the loop to be coded with a single OP_IfNotZero opcode, rather than a sequence of OP_If, OP_Integer, OP_Goto. check-in: bf875e1a user: drh tags: nulls-last
13:08
Extra VDBE comments in the NULLS LAST logic provide landmarks to help understand the EXPLAIN output. check-in: 649b08ea user: drh tags: nulls-last
2019-08-22
21:13
Add additional VDBE coverage macros. check-in: d3531f5b user: drh tags: nulls-last
19:35
Merge fixes from trunk. Also fix a reference to the KeyInfo.aSortOrder field, which should now be KeyInfo.aSortFlags check-in: 63e625c8 user: drh tags: nulls-last
16:38
Fix the likely(), unlikely(), and likelihood() functions so that they have no affinity, just like any other function. Ticket [7e07a3dbf5a8cd26] check-in: 44578865 user: drh tags: trunk
11:11
Fix a false-positive in sqlite3ExprNeedsNoAffinityChange(). Ticket [ac184eb571d5e6e0] check-in: e62eddbb user: drh tags: trunk
00:53
Fix the OP_SeekGE, OP_SeekGT, OP_SeekLE, and OP_SeekLT opcodes so that they preserve the datatype of the value in the register used as the key. Ticket [d9f584e936c7a8d0] check-in: 81b9f0f5 user: drh tags: trunk
2019-08-21
19:58
Add missing VdbeCoverage() macros to new code. check-in: b1cbcdc6 user: dan tags: nulls-last
17:46
Disable broken test case in expert1.test. check-in: 73e30c2e user: dan tags: nulls-last
15:41
Update this branch with latest trunk changes. check-in: 6153bcf4 user: dan tags: nulls-last
14:54
Avoid assuming that "column IS ?", where column is declared UNIQUE, matches only a single row (as "?" might be NULL). Fix for [b8689402]. check-in: d02490a2 user: dan tags: trunk
11:31
Fix a broken assert() in the fts3 snippet code that was failing for queries containging more than 64 phrases. check-in: 4c01e017 user: dan tags: trunk
2019-08-20
20:09
Further tests for the special null-handling on this branch. check-in: 0dbbb51f user: dan tags: nulls-last
19:11
Fix a problem with fts5 "ORDER BY rank" queries when the fts5 table name requires quoting. check-in: 00e9a8f2 user: dan tags: trunk
17:51
Add tests for sort-by-index cases that use IN() and non-default NULL handling. check-in: 09d660ec user: dan tags: nulls-last