SQLite 3.25.0 (64-bit) 軟體 Download 下載

• 1

  版本確認

• 2

  檔案準備中

• 3

  檔案下載

What's new in this version:

- Add support for window functions
- Use a separate mutex on every inode in the unix VFS, rather than a single mutex shared among them all, for slightly better concurrency in multi-threaded environments
- Enhance the PRAGMA integrity_check command for improved detection of problems on the page freelist
- Output infinity as 1e999 in the ".dump" command of the command-line shell
- Added the SQLITE_FCNTL_DATA_VERSION file-control
- Added the Geopoly module

Enhancements the ALTER TABLE command:
- Add support for renaming columns within a table using ALTER TABLE table RENAME COLUMN oldname TO newname
- Fix table rename feature so that it also updates references to the renamed table in triggers and views

Query optimizer improvements:
- Avoid unnecessary loads of columns in an aggregate query that are not within an aggregate function and that are not part of the GROUP BY clause
- The IN-early-out optimization: When doing a look-up on a multi-column index and an IN operator is used on a column other than the left-most column, then if no rows match against the first IN value, check to make sure there exist rows that match the columns to the right before continuing with the next IN value
- Use the transitive property to try to propagate constant values within the WHERE clause. For example, convert "a=99 AND b=a" into "a=99 AND b=99"

Bug fixes:
- The ORDER BY LIMIT optimization might have caused an infinite loop in the byte code of the prepared statement under very obscure circumstances, due to a confluence of minor defects in the query optimizer
- On an UPSERT when the order of constraint checks is rearranged, ensure that the affinity transformations on the inserted content occur before any of the constraint checks
- Avoid using a prepared statement for ".stats on" command of the CLI after it has been closed by the ".eqp full" logicc
- The LIKE optimization was generating incorrect byte-code and hence getting the wrong answer if the left-hand operand has numeric affinity and the right-hand-side pattern is '/%' or if the pattern begins with the ESCAPE character