Sqlite:

使用Python的sqlite3：

需要注意下commit方式與qt稍有不同

import sqlite3class DBManager():def __init__(self):self.db = sqlite3.connect("core.db")self.query = self.db.cursor() ...self._initTable()...## Create table["webpower"] if not existsdef _initTable(self):self.query.execute("create table if not exists webpower (id integer primary key,name TEXT,state integer)")self.db.commit()...

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使用QtSql:

1 from PyQt4.QtSql import QSqlQuery,QSqlDatabase 2 3 class DBManager(): 4 def __init__(self): 5 self.db = QSqlDatabase.addDatabase("QSQLITE") #select database type 6 self.db.setDatabaseName("core.db") # set database name 7 self.db.open() #connect to or create database 8 self.query = QSqlQuery() #sql handler 9 ... 10 11 ...

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Mysql:

from PyQt4.QtSql import QSqlQuery,QSqlDatabaseclass DBManager():def __init__(self):self.db = QSqlDatabase.addDatabase("QMYSQL") #select database typeself.db.setHostName("localhost") #set addressself.db.setUserName("root"); #set user nameself.db.setPassword("root"); #set user pwdself._trytoConnect() #check connectionself.query = QSqlQuery()## create databaseself.query.exec_("CREATE DATABASE test1")## Choose databaseself.db.setDatabaseName("test1")self._trytoConnect()#also can be :self.query.exec_("USE test1")## Connect and check connection statedef _trytoConnect(self):if (self.db.open()): print "Success"else:print "Failed to connect to mysql"...

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常用SQL：

--create table create table if not exists test2 (id integer primary key,time real,powers real);--clear table delete from test2;--insert insert into t1 values(1,0.1,0.2);--select select * from test1--delete table drop table test4

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轉載于:https://www.cnblogs.com/yzzw006/p/4111144.html

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