### What problem does this PR solve?
When multiple columns are used as content columns in RDBMS connector,
the generated document text gets chunked by TxtParser which strips
newline delimiters during merge. This causes field names and values from
different columns to be concatenated without any separator, making the
content unreadable.
Changes:
- txt_parser.py: restore newline separator when merging adjacent text
segments within a chunk, so that split sections are not directly
concatenated
- rdbms_connector.py: use double newline between fields and place field
value on a new line after the field name bracket, giving TxtParser
clearer boundaries to work with
Closes#13001
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Co-authored-by: tunsuytang <tunsuytang@tencent.com>
The RDBMS (MySQL/PostgreSQL) connector generates document filenames
using the first 100 characters of the content column
(semantic_identifier). When the content contains newline characters
(\n), the resulting filename includes those newlines — for example:
Category: غير صحيح كليًا\nTitle: تفنيد حقائق....txt
RAGFlow's filename_type() function uses re.match(r".*\.txt$", filename)
to detect file types, but .* does not match newline characters by
default in Python regex. This causes the regex to fail, returning
FileType.OTHER, which triggers:
pythonraise RuntimeError("This type of file has not been supported
yet!")
As a result, all documents synced via the MySQL/PostgreSQL connector are
silently discarded. The sync logs report success (e.g., "399 docs
synchronized"), but zero documents actually appear in the dataset. This
is the root cause of issue #13001.
Root cause trace:
rdbms_connector.py → _row_to_document() sets semantic_identifier from
raw content (may contain \n)
connector_service.py → duplicate_and_parse() uses semantic_identifier as
the filename
file_service.py → upload_document() calls filename_type(filename)
file_utils.py → filename_type() regex .*\.txt$ fails on newlines →
returns FileType.OTHER
upload_document() raises "This type of file has not been supported yet!"
Fix: Sanitize the semantic_identifier in _row_to_document() by replacing
newlines and carriage returns with spaces before truncating to 100
characters.
Relates to: #13001, #12817
Type of change
Bug Fix (non-breaking change which fixes an issue)
Co-authored-by: Ahmad Intisar <ahmadintisar@Ahmads-MacBook-M4-Pro.local>
Fix RDBMS field separation after chunking by wrapping field names in
brackets (【field】: value). This ensures fields remain distinguishable
even when TxtParser strips newline delimiters during chunk merging.
Closes #13001
Co-authored-by: mkdev11 <YOUR_GITHUB_ID+MkDev11@users.noreply.github.com>
### What problem does this PR solve?
This PR adds MySQL and PostgreSQL as data source connectors, allowing
users to import data directly from relational databases into RAGFlow for
RAG workflows.
Many users store their knowledge in databases (product catalogs,
documentation, FAQs, etc.) and currently have no way to sync this data
into RAGFlow without exporting to files first. This feature lets them
connect directly to their databases, run SQL queries, and automatically
create documents from the results.
Closes#763Closes#11560
### Type of change
- [ ] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):
### What this PR does
**New capabilities:**
- Connect to MySQL and PostgreSQL databases
- Run custom SQL queries to extract data
- Map database columns to document content (vectorized) and metadata
(searchable)
- Support incremental sync using a timestamp column
- Full frontend UI with connection form and tooltips
**Files changed:**
Backend:
- `common/constants.py` - Added MYSQL/POSTGRESQL to FileSource enum
- `common/data_source/config.py` - Added to DocumentSource enum
- `common/data_source/rdbms_connector.py` - New connector (368 lines)
- `common/data_source/__init__.py` - Exported the connector
- `rag/svr/sync_data_source.py` - Added MySQL and PostgreSQL sync
classes
- `pyproject.toml` - Added mysql-connector-python dependency
Frontend:
- `web/src/pages/user-setting/data-source/constant/index.tsx` - Form
fields
- `web/src/locales/en.ts` - English translations
- `web/src/assets/svg/data-source/mysql.svg` - MySQL icon
- `web/src/assets/svg/data-source/postgresql.svg` - PostgreSQL icon
### Testing done
Tested with MySQL 8.0 and PostgreSQL 16:
- Connection validation works correctly
- Full sync imports all query results as documents
- Incremental sync only fetches rows updated since last sync
- Custom SQL queries filter data as expected
- Invalid credentials show clear error messages
- Lint checks pass (`ruff check` returns no errors)
---------
Co-authored-by: mkdev11 <YOUR_GITHUB_ID+MkDev11@users.noreply.github.com>
