mysql 执行长sql

import MySQLdb
conn= MySQLdb.connect(
    host='192.168.137.3',
    port = 3306,
    user='monitor',
    passwd='1234567',
    db ='information_schema'
    )
sql=(
    "SELECT ifnull(trx_id, 'null')," 
    "ifnull(trx_state,'null')," 
     "ifnull(trx_started,'null')," 
    "ifnull(trx_wait_started,'null')," 
    "ifnull(trx_weight,'null')," 
    "ifnull(trx_mysql_thread_id,'null')," 
    "ifnull(trx_query,'null')," 
    "ifnull(trx_operation_state,'null')," 
    "ifnull(TRX_TABLES_IN_USE,'null')," 
    "ifnull(trx_rows_locked,'null')," 
     "ifnull(trx_rows_modified,'null')," 
    "ifnull(trx_tables_locked,'null') FROM information_schema.innodb_trx"
)
print sql
cur = conn.cursor()
a = cur.execute(sql)
info = cur.fetchall()
print info

C:Python27python.exe C:/Users/TLCB/PycharmProjects/untitled/templates/a11.py
SELECT ifnull(trx_id, 'null'),ifnull(trx_state,'null'),ifnull(trx_started,'null'),ifnull(trx_wait_started,'null'),ifnull(trx_weight,'null'),ifnull(trx_mysql_thread_id,'null'),ifnull(trx_query,'null'),ifnull(trx_operation_state,'null'),ifnull(TRX_TABLES_IN_USE,'null'),ifnull(trx_rows_locked,'null'),ifnull(trx_rows_modified,'null'),ifnull(trx_tables_locked,'null') FROM information_schema.innodb_trx
(('1641456', 'RUNNING', '2017-12-13 23:07:32', 'null', '1', '13092', 'null', 'null', '0', '0', '0', '0'),)

Process finished with exit code 0