我在Python中使用sqlite3。我想知道在不进行另一个数据库查询的情况下,我的UPDATE语句是否有效:
c.execute( update students set gpa=3.5 where stuid=123 )
如果没有学生使用stuid 123,那么显然更新失败。
我在Python中使用sqlite3。我想知道在不进行另一个数据库查询的情况下,我的UPDATE语句是否有效:
c.execute( update students set gpa=3.5 where stuid=123 )
如果没有学生使用stuid 123,那么显然更新失败。
cursor.rrowcount
如果更新成功(影响1行),则为1;如果更新失败,则为0。
如果您想处理错误和成功,请获得更完整的答案:
c.execute( update students set gpa=3.5 where stuid=123 )
if c.rowcount < 1:
#error
else:
#success
command = """Update Table_Name SET col1 = 2 WHERE col2 = 1"""
dbconn.execute(command)
sqliteconn.commit()
if dbconn.rowcount > 0:
print("Update Statement Executed Successfully")
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