SQLite (64-bit)

What's new in this version:

- Add support for compiling SQLite to WASM and running it in web browsers. NB: The WASM build and its interfaces are considered "beta" and are subject to minor changes if the need arises. We anticipate finalizing the interface for the next release.
- Add the recovery extension that might be able to recover some content from a corrupt database file
- Query planner enhancement
- Recognize covering indexes on tables with more than 63 columns where columns beyond the 63rd column are used in the query and/or are referenced by the index
- Extract the values of expressions contained within expression indexes where practical, rather than recomputing the expression
- The NOT NULL and IS NULL operators (and their equivalents) avoid loading the content of large strings and BLOB values from disk
- Avoid materializing a view on which a full scan is performed exactly once. Use and discard the rows of the view as they are computed
- Allow flattening of a subquery that is the right-hand operand of a LEFT JOIN in an aggregate query
- A new typedef named sqlite3_filename is added and used to represent the name of a database file. Various interfaces are modified to use the new typedef instead of "char*". This interface change should be fully backwards compatible, though it might cause (harmless) compiler warnings when rebuilding some legacy applications
- Add the sqlite3_value_encoding() interface
- Security enhancement: SQLITE_DBCONFIG_DEFENSIVE is augmented to prohibit changing the schema_version. The schema_version becomes read-only in defensive mode
- Enhancements to the PRAGMA integrity_check statemen
- Columns in non-STRICT tables with TEXT affinity should not contain numeric values
- Columns in non-STRICT tables with NUMERIC affinity should not contain TEXT values that could be converted into numbers
- Verify that the rows of a WITHOUT ROWID table are in the correct order
- Enhance the VACUUM INTO statement so that it honors they PRAGMA synchronous setting
- Enhance the sqlite3_strglob() and sqlite3_strlike() APIs so that they are able to accept NULL pointers for their string parameters and still generate a sensible result
- Provide the new SQLITE_MAX_ALLOCATION_SIZE compile-time option for limiting the size of memory allocations
- Change the algorithm used by SQLite's built-in pseudo-random number generator (PRNG) from RC4 to Chacha20
- Allow two or more indexes to have the same name as long as they are all in separate schemas
- Miscellaneous performance optimizations result in about 1% fewer CPU cycles used on typical workloads