python sqlite fetchall未返回正确的数据类型
我对fetchall返回的数据类型是否正确存在问题。一个人能行吗python sqlite fetchall未返回正确的数据类型,python,sqlite,fetchall,Python,Sqlite,Fetchall,我对fetchall返回的数据类型是否正确存在问题。一个人能行吗 con = sqlite3.connect('test.db', detect_types=sqlite3.PARSE_DECLTYPES) con = sqlite3.connect('test.db', detect_types=sqlite3.PARSE_DECLTYPES) 与con: cur = con.cursor() cur.execute("SELECT df1 FROM PLCValues") ro
con = sqlite3.connect('test.db', detect_types=sqlite3.PARSE_DECLTYPES)
con = sqlite3.connect('test.db', detect_types=sqlite3.PARSE_DECLTYPES)
与con:
cur = con.cursor()
cur.execute("SELECT df1 FROM PLCValues")
rows = cur.fetchall()
#print(rows)
for row in rows:
print (row)
print(row)
cur = con.cursor()
cur.execute("SELECT df1 FROM PLCValues")
rows = cur.fetchone()
#print(rows)
for row in rows:
print (row)
print(row)
返回
================= RESTART: C:/Users/zippo/Desktop/Graphit.py =================
(44.64769744873047,)
(44.691650390625,)
(44.691650390625,)
(44.471900939941406,)
(44.64769744873047,)
菲克通
与con:
cur = con.cursor()
cur.execute("SELECT df1 FROM PLCValues")
rows = cur.fetchall()
#print(rows)
for row in rows:
print (row)
print(row)
cur = con.cursor()
cur.execute("SELECT df1 FROM PLCValues")
rows = cur.fetchone()
#print(rows)
for row in rows:
print (row)
print(row)
返回:
================= RESTART: C:/Users/zippo/Desktop/Graphit.py =================
44.64769744873047
44.64769744873047
cur.fetchall()
返回元组的元组。根据数据,它似乎返回了正确的类型。您可能希望遍历单个元组以获得单个元素。cur.fetchall()
返回元组的元组。根据数据,它似乎返回了正确的类型。您可能希望遍历单个元组以获得单个元素。在PLCValues
表中df1
列的类型是什么?在PLCValues
表中df1
列的类型是什么?