Add support for query parameters, JOINs, SELECT * and three-part table names

CHANGELOG.md

@@ -6,6 +6,24 @@ All notable changes to this project will be documented in this file.
 
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+## [1.2.0] - 2026-06-04
+
+### Added
+- **Parametrized queries (R1)** — `execute(sql, params)` accepts positional (`?` tuple/list) and named (`:name` dict) parameters; passed straight to SQLite during in-memory filtering. Cache loads still fetch the full table (parameters are not applied to source fetches).
+- **JOIN support (R2)** — multi-table SELECTs are parsed into per-table column sets; each table is cached independently and the JOIN runs in the in-memory SQLite. Columns in a multi-table query must be qualified by table or alias.
+- **`SELECT *` support (R3)** — wildcard (and `alias.*`) queries discover all columns from the source DB, cache the whole table, and mark it `is_full` so later column queries are guaranteed cache hits without re-fetch.
+- **Three-part table names (R4)** — `[catalog].[schema].[table]` is parsed to its base name for caching; the in-memory query is rewritten to strip catalog/schema prefixes so it runs under SQLite.
+- `SQLMEM_SQL_DIALECT` env var (default `tsql`) — sqlglot dialect used to parse incoming SQL; T-SQL also accepts ANSI SQL and MSSQL bracket quoting.
+- `CacheManager.discover_columns()` and `CacheManager.is_table_full()`; `load_table()` gained a `full` flag.
+
+### Changed
+- `pyproject.toml` — bumped version to `1.2.0`
+- `parser.py` — `ParsedQuery.table: str` replaced by `tables: list[str]` plus `columns_by_table`, `sqlite_sql`, `params`, and `wildcard_tables`; SQL is parsed with the configured dialect and rendered to SQLite for execution.
+- `executor.py` — loads each referenced table independently and applies query parameters during in-memory execution.
+- `cache.py` — schema version bumped to `2`; `_sqlmem_tables` gained an `is_full` column (existing on-disk caches are discarded and rebuilt on load).
+
+---
+
 ## [1.1.0] - 2026-06-03
 
 ### Added