|
|
import pymysql
|
|
|
import logging
|
|
|
|
|
|
def QueryBook(conn,para1,para2,index):
|
|
|
if para1=="" or para2=="":
|
|
|
return "输入不能为空"
|
|
|
cursor=conn.cursor()
|
|
|
##目前进度：单值查询已做完，区间查询没有做。并且最后return的是一个比较乱的tuple。在show()函数中应该要一层一层的处理
|
|
|
try:
|
|
|
if index==0:
|
|
|
sql="select bnum,bclass,bname,publisher,year,author,price,collection from book where bclass=%s"
|
|
|
elif index==1:
|
|
|
sql="select bnum,bclass,bname,publisher,year,author,price,collection from book where bname=%s"
|
|
|
elif index==2:
|
|
|
sql="select bnum,bclass,bname,publisher,year,author,price,collection from book where publisher=%s"
|
|
|
elif index==4:
|
|
|
sql="select bnum,bclass,bname,publisher,year,author,price,collection from book where author=%s"
|
|
|
elif index==3:
|
|
|
y1=int(para1)
|
|
|
y2=int(para2)
|
|
|
sql="select bnum,bclass,bname,publisher,year,author,price,collection from book where year>%s and year<%s"
|
|
|
elif index==5:
|
|
|
p1=float(para1)
|
|
|
p2=float(para2)
|
|
|
sql="select bnum,bclass,bname,publisher,year,author,price,collection from book where price>%s and price<%s"
|
|
|
|
|
|
try:
|
|
|
if index==0 or index==1 or index==2 or index==4:
|
|
|
cursor.execute(sql,para1)
|
|
|
elif index==5:
|
|
|
cursor.execute(sql,(p1,p2))
|
|
|
else:
|
|
|
cursor.execute(sql,(y1,y2))
|
|
|
|
|
|
conn.commit()
|
|
|
result=cursor.fetchall()
|
|
|
return result
|
|
|
except Exception as e:
|
|
|
conn.rollback()
|
|
|
return e
|
|
|
|
|
|
except Exception as e:
|
|
|
return e |
