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35 check-ins using file src/backup.c version 8c39a1eb

2011-02-19
14:19
Changes which attempt to address an obscure SQLITE_PROTOCOL error. Leaf check-in: 1725aa75 user: drh tags: wal-trace-375
2011-01-28
03:13
Reactivate the analyze5.test script. Closed-Leaf check-in: a2a9f640 user: drh tags: stat2-enhancement
01:57
Change the weighting of binary searches on tables to 1/10th the cost of a search on an index. Change the assumed reduction in search space from a indexed range constraint from 1/3rd to 1/4th. Do not let the estimated number of rows drop below 1. check-in: 4847c6cb user: drh tags: stat2-enhancement
2011-01-25
16:48
Make sure the return code from doing an xSync is correctly initialized so that a valid return code is produced regardless of the path taken through the logic. check-in: f12b5d76 user: drh tags: trunk
16:20
Change the name of SQLITE_FCNTL_SYNC to SQLITE_FCNTL_SYNC_OMITTED and only send it when PRAGMA synchronous=OFF. Add better documentation to explain what that file-control opcode is used for. check-in: 64914980 user: drh tags: trunk
13:43
Fix a couple of typos in comments. No changes to actual code. check-in: 9167fdb3 user: dan tags: trunk
11:33
Fix a broken assert() in pager.c. check-in: 13108ce1 user: dan tags: trunk
09:54
Fix a problem in memsubsys1.test. Modifications to test code only. check-in: 7ef3f7cb user: dan tags: trunk
04:34
Shave a few cycles so that performance is better than 3.7.4 in speed tests. check-in: e1464930 user: drh tags: trunk
2011-01-24
20:18
Modify the test_quote.c demonstration shim so that it works when SQLITE_THREADSAFE=0 is defined. check-in: b70bccca user: drh tags: trunk
19:45
Fix a typo in the documentation for sqlite3_snprintf(). No changes to code. check-in: 8d106541 user: drh tags: trunk
19:14
Fix a harmless compiler warning (a shadowed local variable) in analyze.c. check-in: a1ad7fb3 user: drh tags: trunk
17:46
Restructuring and generalizing analyze5.test. The whole script is currently disabled and will need to be reenabled prior to merging with trunk. check-in: 31fcc706 user: drh tags: stat2-enhancement
16:00
Ensure that if a deferred FK constraint is violated by a statement that creates its own implicit transaction, the statement is not an "active-write" after sqlite3_step() returns. Closed-Leaf check-in: 8063197e user: dan tags: deferred-fk-quirk
15:11
Change the cost estimator in the query planner to take into account the logN rowid lookup cost when going from an index to a table. check-in: b442525b user: drh tags: stat2-enhancement
2011-01-22
13:32
Modify the trace callback mechanism so that SQL commands executed from within virtual table or user function callbacks are passed to the trace callback without parameter expansion and enclosed in SQL comments. check-in: a764915b user: dan tags: trunk
00:10
Add the ability to use indices for constraints of the form "x IS NOT NULL" when sqlite_stat2 is available and most entries for column x are NULL. check-in: 5d5bddd2 user: drh tags: stat2-enhancement
2011-01-21
18:25
Change sqlite3StrAccumAppend() to use realloc instead of malloc. check-in: 380f61df user: dan tags: trunk
18:18
Adjustments to the result row estimator for the IN operator so that it gives the same estimates as the equivalent OR operator. Test cases for the same. check-in: c82cb9c0 user: drh tags: stat2-enhancement
16:27
Make use of histogram data to make better estimates for the number of rows that will be returned from "x IN (v1,v2,v3,...)" constraints. check-in: fd3977a2 user: drh tags: stat2-enhancement
15:52
Add options to test command [do_faultsim_test] to support testing VFS implementations. check-in: 503ad889 user: dan tags: trunk
14:37
Add the ability to use indices when a range contraint is bounded on the lower end by NULL. check-in: f73a167b user: drh tags: stat2-enhancement
2011-01-20
20:36
Update ANALYZE test cases to check out the use of histograms for equality constraints. check-in: c7b59afa user: drh tags: stat2-enhancement
16:52
Use histogram data to improve the row-count estimates on equality constraints. check-in: 6bfc5c69 user: drh tags: stat2-enhancement
02:56
The first of a planned series of enhancements to the query planner that enable it to make better use of sqlite_stat2 histograms when the table has many repeated values. check-in: 2cd374cd user: drh tags: stat2-enhancement
2011-01-19
21:58
Comment improvements in pcache1.c. No changes to code. check-in: 9660a0a2 user: drh tags: trunk
2011-01-18
17:34
Pull over all the latest trunk changes. check-in: ca86d04b user: drh tags: wal-trace-375
17:03
Do not use mutexes in the pcache implementation unless SQLITE_ENABLE_MEMORY_MANAGMENT is defined. This is a performance enhancement. A side effect is that pcaches will not steal pages from one another unless ENABLE_MEMORY_MANAGEMENT is set, or unless SQLITE_THREADSAFE=0. check-in: e5ca59e6 user: drh tags: trunk
16:13
Get all test cases working with the mutex-free-pcache implementation. Closed-Leaf check-in: 2dc98d29 user: drh tags: mutex-free-pcache
15:17
Do not use SQLITE_MUTEX_STATIC_MEM2 since it has been reused as STATIC_OPEN. Instead, create a new static mutex STATIC_PMEM which is an alias for the unused STATIC_LRU2. check-in: f1cf02ef user: drh tags: mutex-free-pcache
2011-01-17
21:32
Here is a completely new implementation of the mutex-free-pcache. This one uses a common code base and automatically selects whether or not to use mutexes depending on compile-time and start-time options. check-in: d094a1bf user: drh tags: mutex-free-pcache
18:30
Fix a typo in the documentation for sqlite3_stmt_readonly(). check-in: 56417a33 user: drh tags: trunk
17:42
Add the SQLITE_OMIT_AUTORESET compile-time option which if enabled causes the sqlite3_step() routine to return SQLITE_MISUSE if it is called after it has previously returned anything other than SQLITE_ROW, SQLITE_BUSY, or SQLITE_LOCKED. check-in: 053ce76d user: drh tags: trunk
02:24
Add back an ALWAYS() to regain full test coverage. check-in: b93f6f3e user: drh tags: trunk
2011-01-16
22:37
On a backup from a smaller to a larger page size, do not begin committing the transaction until the source pages after the pending byte have been copied. check-in: 612e2599 user: drh tags: trunk