import pyodbc

try:
    connection = pyodbc.connect('DRIVER={ODBC Driver 17 for SQL Server};SERVER=.;DATABASE=SampleDB;Trusted_Connection=yes')

    cursor = connection.cursor()


    # wuery 1
    print("counting all records in table...")
    cursor.execute("select count(*) as total_records from tblCustomers")


    while 1:
        row = cursor.fetchone()
        if not row:
            break
        print(row.total_records)
    print("--- next query ----")

    # query 2
    print("fetching server name...")
    cursor.execute("select @@SERVERNAME as server_name")

    while 1:
        row = cursor.fetchone()
        if not row:
            break
        print(row.server_name)
    print("--- next query ----")

    # query 3
    print("some DMV stuff...")
    cursor.execute("select top 10 wait_type, wait_time_ms from sys.dm_os_wait_stats where wait_time_ms > 5 order by wait_time_ms desc")

    while 1:
        row = cursor.fetchone()
        if not row:
            break
        print(row.wait_type, row.wait_time_ms)

    print("--- no more queries ...  ----")




    cursor.close()
    connection.close()

except pyodbc.Error as ex:
    print()
    print("exception: ",ex)
    cursor.close()
    connection.close()
    print()
    exit()

print()