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2018-05-07
11:48
On an UPDATE, try to overwrite an existing btree cell with the modified content, if the old and new cell are the same size. Use memcmp() first to avoid dirtying pages that are unchanged. check-in: 5887d8beb5 user: drh tags: trunk
11:29
Fix harmless compiler warnings in the cell-overwrite logic. Closed-Leaf check-in: 3e11dc3183 user: drh tags: cell-overwrite-prototype
2018-05-04
19:18
Merge enhancements from trunk. check-in: 9650f71b82 user: drh tags: cell-overwrite-prototype
18:32
Fix requirements marks. No code changes. check-in: 7fdad122a2 user: drh tags: trunk
2018-05-03
16:56
Fix various error handling conditions on the cell overwrite optimization. Fix a test case so that it works with the new optimization. check-in: f89b54f414 user: drh tags: cell-overwrite-prototype
14:07
The BtCursor.info fields are only valid if info.nSize!=0. check-in: 54c537eead user: drh tags: cell-overwrite-prototype
13:56
Add more corruption checking to the cell overwrite logic. check-in: 58d14afe1e user: drh tags: cell-overwrite-prototype
12:57
Bug fixes in the overwrite optimization. check-in: 0cb6cd2a6a user: drh tags: cell-overwrite-prototype
03:59
The sqlite3BtreeInsert() routine tries to overwrite an existing cell with modified content if the new content is the same size. Pages are only dirtied if they change. This prototype works some, but still has issues. check-in: 489451b378 user: drh tags: cell-overwrite-prototype
2018-05-02
15:00
Prevent VACUUM from running any commands in sqlite_master.sql other than CREATE statements. That is all that should be there anyhow. This fixes a problem discovered by OSSFuzz. Test cases in TH3. check-in: ab0d99d0b5 user: drh tags: trunk