Python3中使用Mysql的用法。
标签：mysqld fetch localhost local finally success sql span 记录
Python3中使用Mysql的用法。
coding utf-8
import pymysql
try:
conn = pymysql.connect(host=‘localhost‘,user="root",password=‘123456‘,database=‘datarepair‘,port=3306,charset=‘utf8‘)
cursor = conn.cursor()
#cursor.execute("select rowId,Name from ruletab where ruletype=%s",(10))
cursor.executemany("select rowId,Name from ruletab where ruletype=%s",[10,20]) #一般用于批量增删改中。
print(cursor.rowcount,cursor.rownumber)
for x in cursor.fetchall():
print("rowId:{0[0]} Name:{0[1]} RowNumber:{1}".format(x,cursor.rownumber))
print(‘-‘ * 50)
for x in cursor.fetchmany(2):
print("rowId:{0[0]} Name:{0[1]} RowNumber:{1}".format(x,cursor.rowcount))
print(‘-‘ * 50)
cursor.scroll(0,‘absolute‘) #将游标调回0位置处。
for x in cursor.fetchmany(2): #取2条记录。
print("rowId:{0[0]} Name:{0[1]} RowNumber:{1}".format(x,cursor.rownumber))
print(cursor.rowcount,cursor.rownumber)
cursor.close()
finally:
if ‘conn‘ in dir() and callable(conn) and conn.open:
conn.close()
print("closed successfully.")