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    temp_list=[]
    temp_list.append( self._cr.execute('select * from std_table_print'))
    print(temp_list)

here is my code but i am getting a none value as a result

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Hello,

for getting the data from the query, after your query you need to write one more line in code.

self._cr.execute("your query")  # your query line

from below two line you can use anyone based on your needs.

result = self._cr.fetchall()  # return the data into list of tuple format
result = self._cr.dictfetchall() # return the data into the list of dictionary format

into the result variable you can get the data of query

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Hello Sourav,

self._cr.execute('select * from std_table_print')   this means only the query executed
after that you have to fetch from cursor

self._cr.fetch()

or 

self._cr.fetchall()

or

self._cr.fetchone()

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To fetch data from the employee module you can use this function:

It will execute a SQL command and fetch all the data into a list of tuple formats and then convert it into dictionary format.

    @api.model
def get_department_employee(self):
cr = self._cr
cr.execute("""select department_id, hr_department.name,count(*)
            from hr_employee join hr_department on hr_department.id=hr_employee.department_id
            group by hr_employee.department_id,hr_department.name""")
fetch_data = cr.fetchall()
data = []
for i in range(0, len(fetch_data)):
data.append({'label': fetch_data[i][1], 'value': fetch_data[i][2]})
return data

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