feat: add postgresql support (#626)

- add postgresql support
- dashboard chat prompt update

pilot/connections/manages/connection_manager.py

@@ -16,6 +16,7 @@
 from pilot.connections.rdbms.conn_mssql import MSSQLConnect
 from pilot.connections.rdbms.base import RDBMSDatabase
 from pilot.connections.rdbms.conn_clickhouse import ClickhouseConnect
+from pilot.connections.rdbms.conn_postgresql import PostgreSQLDatabase
 from pilot.singleton import Singleton
 from pilot.common.sql_database import Database
 from pilot.connections.db_conn_info import DBConfig

pilot/connections/rdbms/conn_postgresql.py

@@ -0,0 +1,217 @@
+from typing import Iterable, Optional, Any
+from sqlalchemy import text
+from urllib.parse import quote
+from pilot.connections.rdbms.base import RDBMSDatabase
+
+
+class PostgreSQLDatabase(RDBMSDatabase):
+    driver = "postgresql+psycopg2"
+    db_type = "postgresql"
+    db_dialect = "postgresql"
+
+    @classmethod
+    def from_uri_db(
+        cls,
+        host: str,
+        port: int,
+        user: str,
+        pwd: str,
+        db_name: str,
+        engine_args: Optional[dict] = None,
+        **kwargs: Any,
+    ) -> RDBMSDatabase:
+        db_url: str = (
+            cls.driver
+            + "://"
+            + quote(user)
+            + ":"
+            + quote(pwd)
+            + "@"
+            + host
+            + ":"
+            + str(port)
+            + "/"
+            + db_name
+        )
+        return cls.from_uri(db_url, engine_args, **kwargs)
+
+    def _sync_tables_from_db(self) -> Iterable[str]:
+        table_results = self.session.execute(
+            text(
+                "SELECT tablename FROM pg_catalog.pg_tables WHERE schemaname != 'pg_catalog' AND schemaname != 'information_schema'"
+            )
+        )
+        view_results = self.session.execute(
+            text(
+                "SELECT viewname FROM pg_catalog.pg_views WHERE schemaname != 'pg_catalog' AND schemaname != 'information_schema'"
+            )
+        )
+        table_results = set(row[0] for row in table_results)
+        view_results = set(row[0] for row in view_results)
+        self._all_tables = table_results.union(view_results)
+        self._metadata.reflect(bind=self._engine)
+        return self._all_tables
+
+    def get_grants(self):
+        session = self._db_sessions()
+        cursor = session.execute(
+            text(
+                f"""
+                SELECT DISTINCT grantee, privilege_type
+                FROM information_schema.role_table_grants
+                WHERE grantee = CURRENT_USER;"""
+            )
+        )
+        grants = cursor.fetchall()
+        return grants
+
+    def get_collation(self):
+        """Get collation."""
+        try:
+            session = self._db_sessions()
+            cursor = session.execute(
+                text(
+                    "SELECT datcollate AS collation FROM pg_database WHERE datname = current_database();"
+                )
+            )
+            collation = cursor.fetchone()[0]
+            return collation
+        except Exception as e:
+            print("postgresql get collation error: ", e)
+            return None
+
+    def get_users(self):
+        """Get user info."""
+        try:
+            cursor = self.session.execute(
+                text("SELECT rolname FROM pg_roles WHERE rolname NOT LIKE 'pg_%';")
+            )
+            users = cursor.fetchall()
+            return [user[0] for user in users]
+        except Exception as e:
+            print("postgresql get users error: ", e)
+            return []
+
+    def get_fields(self, table_name):
+        """Get column fields about specified table."""
+        session = self._db_sessions()
+        cursor = session.execute(
+            text(
+                f"SELECT column_name, data_type, column_default, is_nullable, column_name as column_comment \
+                FROM information_schema.columns WHERE table_name = :table_name",
+            ),
+            {"table_name": table_name},
+        )
+        fields = cursor.fetchall()
+        return [(field[0], field[1], field[2], field[3], field[4]) for field in fields]
+
+    def get_charset(self):
+        """Get character_set."""
+        session = self._db_sessions()
+        cursor = session.execute(
+            text(
+                "SELECT pg_encoding_to_char(encoding) FROM pg_database WHERE datname = current_database();"
+            )
+        )
+        character_set = cursor.fetchone()[0]
+        return character_set
+
+    def get_show_create_table(self, table_name):
+        cur = self.session.execute(
+            text(
+                f"""
+            SELECT a.attname as column_name, pg_catalog.format_type(a.atttypid, a.atttypmod) as data_type
+            FROM pg_catalog.pg_attribute a
+            WHERE a.attnum > 0 AND NOT a.attisdropped AND a.attnum <= (
+                SELECT max(a.attnum)
+                FROM pg_catalog.pg_attribute a
+                WHERE a.attrelid = (SELECT oid FROM pg_catalog.pg_class WHERE relname='{table_name}')
+            ) AND a.attrelid = (SELECT oid FROM pg_catalog.pg_class WHERE relname='{table_name}')
+                """
+            )
+        )
+        rows = cur.fetchall()
+
+        create_table_query = f"CREATE TABLE {table_name} (\n"
+        for row in rows:
+            create_table_query += f"    {row[0]} {row[1]},\n"
+        create_table_query = create_table_query.rstrip(",\n") + "\n)"
+
+        return create_table_query
+
+    def get_table_comments(self, db_name=None):
+        tablses = self.table_simple_info()
+        comments = []
+        for table in tablses:
+            table_name = table[0]
+            table_comment = self.get_show_create_table(table_name)
+            comments.append((table_name, table_comment))
+        return comments
+
+    def get_database_list(self):
+        session = self._db_sessions()
+        cursor = session.execute(text("SELECT datname FROM pg_database;"))
+        results = cursor.fetchall()
+        return [
+            d[0] for d in results if d[0] not in ["template0", "template1", "postgres"]
+        ]
+
+    def get_database_names(self):
+        session = self._db_sessions()
+        cursor = session.execute(text("SELECT datname FROM pg_database;"))
+        results = cursor.fetchall()
+        return [
+            d[0] for d in results if d[0] not in ["template0", "template1", "postgres"]
+        ]
+
+    def get_current_db_name(self) -> str:
+        return self.session.execute(text("SELECT current_database()")).scalar()
+
+    def table_simple_info(self):
+        _sql = f"""
+            SELECT table_name, string_agg(column_name, ', ') AS schema_info
+            FROM (
+                SELECT c.relname AS table_name, a.attname AS column_name
+                FROM pg_catalog.pg_class c
+                JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
+                JOIN pg_catalog.pg_attribute a ON a.attrelid = c.oid
+                WHERE c.relkind = 'r'
+                AND a.attnum > 0
+                AND NOT a.attisdropped
+                AND n.nspname NOT LIKE 'pg_%'
+                AND n.nspname != 'information_schema'
+                ORDER BY c.relname, a.attnum
+            ) sub
+            GROUP BY table_name;
+            """
+        cursor = self.session.execute(text(_sql))
+        results = cursor.fetchall()
+        return results
+
+    def get_fields(self, table_name, schema_name="public"):
+        """Get column fields about specified table."""
+        session = self._db_sessions()
+        cursor = session.execute(
+            text(
+                f"""
+                SELECT c.column_name, c.data_type, c.column_default, c.is_nullable, d.description
+                FROM information_schema.columns c
+                LEFT JOIN pg_catalog.pg_description d
+                ON (c.table_schema || '.' || c.table_name)::regclass::oid = d.objoid AND c.ordinal_position = d.objsubid
+                WHERE c.table_name='{table_name}' AND c.table_schema='{schema_name}'
+                """
+            )
+        )
+        fields = cursor.fetchall()
+        return [(field[0], field[1], field[2], field[3], field[4]) for field in fields]
+
+    def get_indexes(self, table_name):
+        """Get table indexes about specified table."""
+        session = self._db_sessions()
+        cursor = session.execute(
+            text(
+                f"SELECT indexname, indexdef FROM pg_indexes WHERE tablename = '{table_name}'"
+            )
+        )
+        indexes = cursor.fetchall()
+        return [(index[0], index[1]) for index in indexes]

pilot/scene/chat_dashboard/out_parser.py

@@ -21,9 +21,9 @@ def __init__(self, sep: str, is_stream_out: bool):
         super().__init__(sep=sep, is_stream_out=is_stream_out)
 
     def parse_prompt_response(self, model_out_text):
-        clean_str = super().parse_prompt_response(model_out_text)
-        print("clean prompt response:", clean_str)
-        response = json.loads(clean_str)
+        # clean_str = super().parse_prompt_response(model_out_text)
+        print("clean prompt response:", model_out_text)
+        response = json.loads(model_out_text)
         chart_items: List[ChartItem] = []
         if not isinstance(response, list):
             response = [response]

pilot/scene/chat_dashboard/prompt.py

@@ -22,9 +22,13 @@
 
 Pay attention to the length of the output content of the analysis result, do not exceed 4000 tokens
 
-Give the correct {dialect} analysis SQL (don't use unprovided values such as 'paid'), analysis title(don't exist the same), display method and summary of brief analysis thinking, and respond in the following json format:
+Give the correct {dialect} analysis SQL
+1.Do not use unprovided values such as 'paid'
+2.All queried values must have aliases, such as select count(*) as count from table
+3.If the table structure definition uses the keywords of {dialect} as field names, you need to use escape characters, such as select `count` from table
+4.Carefully check the correctness of the SQL, the SQL must be correct, display method and summary of brief analysis thinking, and respond in the following json format:
 {response}
-Ensure the response is correct json and can be parsed by Python json.loads
+The important thing is: Please make sure to only return the json string, do not add any other content (for direct processing by the program), and the json can be parsed by Python json.loads
 """
 
 RESPONSE_FORMAT = [

setup.py

@@ -366,7 +366,8 @@ def all_datasource_requires():
     """
     pip install "db-gpt[datasource]"
     """
-    setup_spec.extras["datasource"] = ["pymssql", "pymysql", "pyspark"]
+
+    setup_spec.extras["datasource"] = ["pymssql", "pymysql", "pyspark", "psycopg2"]
 
 
 def openai_requires():