|Reported by:||Fernando de Oliveira||Owned by:||Fernando de Oliveira|
2014-08-15 - Release 3.8.6 SQLite version 3.8.6 is a regularly scheduled maintenance release. Upgrading from all previous versions is recommended. This release contains the usual assortment of obscure bug fixes. One bug, however, deserves special attention. A problem appeared in the CREATE INDEX command beginning with version 3.8.2 (2013-12-06) that allowed, under some circumstances, a UNIQUE index to be created on a column that was not unique. Once the index was created, no new non-unique entries could be inserted, but preexisting non-unique entries would remain. See ticket 9a6daf340df99ba93c for further information. In addition to fixing this bug, the PRAGMA integrity_check command has been enhanced to detect non-uniqueness in UNIQUE indices, so that if this bug did introduce any problems in databases, those problems can be easily detected. Other noteworthy changes include the addition of support for hexadecimal integers (ex: 0x1234), and performance enhancements to the IN operator which, according to mailing list reports, help some queries run up to five times faster. Version 3.8.6 uses 25% fewer CPU cycles than version 3.8.0 from approximately one year ago, according to valgrind and the test/speedtest1.c test program. On the other hand, the compiled binary for version 3.8.6 is about 5% larger than 3.8.0. The size increase is due in part to the addition of new features such as WITHOUT ROWID tables and common table expressions.
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