compress.c—application-defined SQL functionscompress() 和 uncompress() 的实现,对文本或 blob 内容进行 zLib 压缩。 json1.c—JSON SQL functions和table-valued functions的实现。这是一个更大、更复杂的扩展。 memvfs.c— 实施新的VFS,将所有内容存储在内存中。 rot13.c—rot13()SQL 函数的实现。这是一...
Built-in functions may be overloaded by new application-defined functions. An application-defined function is permitted to call other SQLite interfaces. However, such calls must not close the database connection nor finalize or reset the prepared statement in which the function is running....
When SQLite tries to access a file that is locked by another process, the default behavior is to return SQLITE_BUSY. You can adjust this behavior from C code using the sqlite_busy_handler() or sqlite_busy_timeout() API functions. See the API documentation for details. If two or more pr...
Multi-threading support is low-priority and untested. If your application-defined functions and virtual tables don't reference data outside of the database they are attached to, this will not cause issues because SQLite always does database operations in a single thread. However, the API needs...
hash_functions (bool)– Make hashing functions available (md5, sha1, etc). regexp_function (bool)– Make the REGEXP function available. bloomfilter (bool)– Make the bloom filter available. Extends SqliteDatabase and inherits methods for declaring user-defined functions, pragmas, etc.class...
Sqlite functions are defined in "./src/func.c". In this file, the name of this function will be "signFunc". The user will call this function in sqlite as sign(n). It will hold only a single variable. It is helpful to model the sign function after the abs function "absFunc", sin...
More efficient handling of application-defined SQL functions, especially in cases where the application defines hundreds or thousands of custom functions. The query planner considers the LIMIT clause when estimating the cost of ORDER BY. The configure script (on unix) automatically detects pread()...
sqlite: allow returning ArrayBufferViews from user-defined functions #60477 Sign in to view logs Summary Jobs test-macOS (macos-13) test-macOS (macos-14) Run details Usage Workflow file Triggered via pull request January 31, 2025 01:12 Renegade334 synchronize #56790 Renegade334:sql...
() interface to created application-defined functions "contained_in" and "overlaps" accepting two demo_data.boundary objects and return true or false. One may assume that "contained_in" and "overlaps" are relatively slow functions that we do not want to invoke too frequently. Then an ...
btree.c- This file contains the implementation of the B-Tree storage engine used by SQLite. The interface to the rest of the system is defined by "btree.h". The "btreeInt.h" header defines objects used internally by btree.c and not published to the rest of the system. ...