SQLite Release 3.39.3 On 2022-09-05

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Prior changes from version 3.39.0 (2022-06-25):

Add (long overdue) support for RIGHT and FULL OUTER JOIN. +

Add new binary comparison operators IS NOT DISTINCT FROM and IS DISTINCT FROM + that are equivalent to IS and IS NOT, respective, for compatibility with + PostgreSQL and SQL standards. +

Add a new return code (value "3") from the sqlite3_vtab_distinct() + interface that indicates a query that has both DISTINCT and ORDER BY + clauses. +

Added the sqlite3_db_name() interface. +

The unix os interface resolves all symbolic links in database + filenames to create a canonical name for the database before the + file is opened. + If the SQLITE_OPEN_NOFOLLOW flag is used with sqlite3_open_v2() + or similar, the open will fail if any element of the path is a + symbolic link. +

Defer materializing views until the materialization + is actually needed, thus avoiding unnecessary work if the materialization turns + out to never be used. +

The HAVING clause of a SELECT statement is now allowed on any aggregate query, + even queries that do not have a GROUP BY clause. +

Many microoptimizations collectively reduce CPU cycles by about 2.3%. +

Prior changes from version 3.39.1 (2022-07-13):

Fix an incorrect result from a query that uses a view that contains a compound + SELECT in which only one arm contains a RIGHT JOIN and where the view is not + the first FROM clause term of the query that contains the view. + forum post 174afeae5734d42d. +

Fix some harmless compiler warnings. +

Fix a long-standing problem with ALTER TABLE RENAME that can only arise + if the sqlite3_limit(SQLITE_LIMIT_SQL_LENGTH) is set to a very small value. +

Fix a long-standing problem in FTS3 that can only arise when compiled with + the SQLITE_ENABLE_FTS3_PARENTHESIS compile-time option. +

Fix the build so that is works when the SQLITE_DEBUG and + SQLITE_OMIT_WINDOWFUNC compile-time options are both provided at the + same time. +

Fix the initial-prefix optimization for the REGEXP extension so that it works + correctly even if the prefix contains characters that require a 3-byte UTF8 + encoding. +

Enhance the sqlite_stmt virtual table so that it buffers all of its output. +

Prior changes from version 3.39.2 (2022-07-21):

Fix a performance regression in the query planner associated with rearranging + the order of FROM clause terms in the presences of a LEFT JOIN. +

Apply fixes for CVE-2022-35737, Chromium bugs 1343348 and 1345947, + forum post 3607259d3c, and + other minor problems discovered by internal testing. +

Changes in this specific patch release, version 3.39.3 (2022-09-05):

Use a statement journal on DML statement affecting two or more database + rows if the statement makes use of a SQL functions that might abort. See + forum thread 9b9e4716c0d7bbd1. +

Use a mutex to protect the PRAGMA temp_store_directory and + PRAGMA data_store_directory statements, even though they are deprecated and + documented as not being threadsafe. See + forum post 719a11e1314d1c70. +

Other bug and warning fixes. See the + timeline + for details. +

Hashes: +

SQLITE_SOURCE_ID: 2022-09-05 11:02:23 4635f4a69c8c2a8df242b384a992aea71224e39a2ccab42d8c0b0602f1e826e8 +

SHA3-256 for sqlite3.c: 2fc273cf8032b601c9e06207efa0ae80eb73d5a1d283eb91096c815fa9640257 + +

A complete list of SQLite releases + in a single page and a chronology are both also available. + A detailed history of every + check-in is available at + + SQLite version control site.