(fix)(chat):fix typo in s2sql and add prompt to output. (#581)

* 1.refactor the retrieval module. 2.refactor the http service module. 3.upgrade text2sql output format the parse for absolute time related expression in query.

* fix bug.

* upgrade the config module, now support config llm suppoted by langchain.

* fix conflicts.

* update text2sql config reload to be compitable with new config format.

* modify default config.

* 1.add self-consistency feature for text2sql. 2.upgrade llm api call from sync to async. 3.refactor text2sql module. 4. refactor semantical retriever modules.

* merege with upstream master

* add general retrieve service.

* add api service for sql_agent for crud opereations of few-shots examples.

* modify requirements

* add auto-cot feature

* 1. output log to a fixed log file.  2.allow few-shots examples tied to data model, and add strategy that extend examples when retrieved examples tied to a data model is not enough. 3. fix misformat in s2ql args.

* add prior_ext to output.

* fix type in in s2sql

* add prompt to output.

---------

Co-authored-by: shaoweigong <shaoweigong@tencent.com>

chat/python/services/s2sql/output_parser.py

@@ -0,0 +1,59 @@
+# -*- coding:utf-8 -*-
+import re
+
+import os
+import sys
+
+sys.path.append(os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__)))))
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+
+from instances.logging_instance import logger
+
+
+def schema_link_parse(schema_link_output: str):
+    try:
+        schema_link_output = schema_link_output.strip()
+        pattern = r'Schema_links:(.*)'
+        schema_link_output = re.findall(pattern, schema_link_output, re.DOTALL)[0].strip()
+    except Exception as e:
+        logger.exception(e)
+        schema_link_output = None
+
+    return schema_link_output
+
+def combo_schema_link_parse(schema_linking_sql_combo_output: str):
+    try:
+        schema_linking_sql_combo_output = schema_linking_sql_combo_output.strip()
+        pattern = r'Schema_links:(\[.*?\])|Schema_links: (\[.*?\])'
+        schema_links_match = re.search(pattern, schema_linking_sql_combo_output)
+
+        if schema_links_match.group(1):
+            schema_links = schema_links_match.group(1)
+        elif schema_links_match.group(2):
+            schema_links = schema_links_match.group(2)
+        else:
+            schema_links = None
+            
+    except Exception as e:
+        logger.exception(e)
+        schema_links = None
+
+    return schema_links
+
+def combo_sql_parse(schema_linking_sql_combo_output: str):
+    try:
+        schema_linking_sql_combo_output = schema_linking_sql_combo_output.strip()
+        pattern = r'SQL:(.*)'
+        sql_match = re.search(pattern, schema_linking_sql_combo_output)
+
+        if sql_match:
+            sql = sql_match.group(1)
+        else:
+            sql = None
+    except Exception as e:
+        logger.exception(e)
+        sql = None
+
+    return sql
+