如何在sqlalchemy中使用sql查询中的变量？

Question

Unable to pass data from excel as variable in sql query in sql alchemy in Python.

Below is my code where I am accessing list of company ids from excel; But when I try to use that in the sql query in (in condition), it throws me error. Can you tell me how to pass variable in sql query in sql alchemy.

file_loc = path + file
company_id = pd.read_excel(file_loc,sheet_name='Sheet1',index_col=None,usecols="A",header=1)

qry = sqlalchemy.text("SELECT year,name,source,SUM(value) FROM table WHERE id in (:company_id) GROUP BY year,name,source")
qryres = pd.read_sql(qry,conn)

Answer 1

you can use this:

file_loc = path + file
company_id = pd.read_excel(file_loc,sheet_name='Sheet1',index_col=None,usecols="A",header=1)

qry = sqlalchemy.text(f"SELECT year,name,source,SUM(value) FROM table WHERE id in ({company_id}) GROUP BY year,name,source")
qryres = pd.read_sql(qry,conn)

Docs: https://docs.python.org/3.5/library/string.html#format-string-syntax