fix(chat-excel):Explicitly create data tables from the df (#2437)

packages/dbgpt-app/src/dbgpt_app/scene/chat_data/chat_excel/excel_learning/prompt.py

@@ -52,9 +52,11 @@ with underscores
 4. If it's in other languages, translate them to English, and replace spaces with \
 underscores
 5. If it's special characters, delete them directly
-6. All column fields must be analyzed and converted, remember to output in JSON
+6. DuckDB adheres to the SQL standard, which requires that identifiers \
+(column names, table names) cannot start with a number.
+7. All column fields must be analyzed and converted, remember to output in JSON
 Avoid phrases like ' // ... (similar analysis for other columns) ...'
-7. You need to provide the original column names and the transformed new column names \
+8. You need to provide the original column names and the transformed new column names \
 in the JSON, as well as your analysis of the meaning and function of that column. If \
 it's a time type, please provide the time format, such as: \
 yyyy-MM-dd HH:MM:ss
@@ -111,9 +113,10 @@ DuckDB 表结构信息如下：
 3. 如果是中文，将中文字段名翻译为英文，并且将空格替换为下划线
 4. 如果是其它语言，将其翻译为英文，并且将空格替换为下划线
 5. 如果是特殊字符，直接删除
-6. 所以列的字段都必须分析和转换，切记在 JSON 中输出
+6. DuckDB遵循SQL标准，要求标识符(列名、表名)不能以数字开头
+7. 所以列的字段都必须分析和转换，切记在 JSON 中输出
 ' // ... (其他列的类似分析) ...)' 之类的话术
-7. 你需要在json中提供原始列名和转化后的新的列名，以及你分析\
+8. 你需要在json中提供原始列名和转化后的新的列名，以及你分析\
 的该列的含义和作用，如果是时间类型请给出时间格式类似:\
 yyyy-MM-dd HH:MM:ss
 

packages/dbgpt-app/src/dbgpt_app/scene/chat_data/chat_excel/excel_reader.py

@@ -171,7 +171,10 @@ def read_from_df(
 
     df = df.rename(columns=lambda x: x.strip().replace(" ", "_"))
     # write data in duckdb
-    db.register(table_name, df)
+    db.register("temp_df_table", df)
+    # The table is explicitly created due to the issue at
+    # https://github.com/eosphoros-ai/DB-GPT/issues/2437.
+    db.execute(f"CREATE TABLE {table_name} AS SELECT * FROM temp_df_table")
     return table_name