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* Fix a bug causing PRAGMA case_sensitive_like statements compiled using
sqlite3_prepare() to fail with an SQLITE_SCHEMA error.
Changes 3.7.7:
* Add support for URI filenames
* Add the sqlite3_vtab_config() interface in support of ON CONFLICT clauses
with virtual tables.
* Add the xSavepoint, xRelease and xRollbackTo methods in virtual tables in
support of SAVEPOINT for virtual tables.
* Update the built-in FTS3/FTS4 and RTREE virtual tables to support ON CONFLICT
clauses and REPLACE.
* Avoid unnecessary reparsing of the database schema.
* Added support for the FTS4 prefix option and the FTS4 order option.
* Allow WAL-mode databases to be opened read-only as long as there is an
existing read/write connection.
* Added support for short filenames.
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* Added the sqlite3_vsnprintf() interface.
* Added the SQLITE_DBSTATUS_LOOKASIDE_HIT, SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE,
and SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL options for the sqlite3_db_status()
interface.
* Added the SQLITE_OMIT_AUTORESET compile-time option.
* Added the SQLITE_DEFAULT_FOREIGN_KEYS compile-time option.
* Updates to sqlite3_stmt_readonly() so that its result is well-defined for all
prepared statements and so that it works with VACUUM.
* Added the "-heap" option to the command-line shell
* Fix a bug involving frequent changes in and out of WAL mode and VACUUM that
could (in theory) cause database corruption.
* Enhance the sqlite3_trace() mechanism so that nested SQL statements such as
might be generated by virtual tables are shown but are shown in comments and
without parameter expansion. This greatly improves tracing output when using
the FTS3/4 and/or RTREE virtual tables.
* Change the xFileControl() methods on all built-in VFSes to return
SQLITE_NOTFOUND instead of SQLITE_ERROR for an unrecognized operation code.
* The SQLite core invokes the SQLITE_FCNTL_SYNC_OMITTED file control to the VFS
in place of a call to xSync if the database has PRAGMA synchronous set to OFF.
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separately from the main library.
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