python3 PyQt5 SQLite
86717 단어 SQL
# coding:utf-8
import os
import sqlite3
class SQLiteTools():
def __init__(self):
pass
# region
def createConnection(self, DB_name):
''' '''
# , ，
self.con = sqlite3.connect(DB_name)
#
self.cur = self.con.cursor()
def selectTableExist(self, tbname):
'''
:param tbname:
:return: True, False
'''
sql = "select * from sqlite_master where type='table' and name = '" + tbname + "';"
self.cur.execute(sql)
cursor = self.cur.fetchall()
if cursor:
return True
else:
return False
def createSQLtable(self, tbname):
'''
， ， :ID， :INTEGER,
:param tbname:
'''
# CREATE TABLE if not exists (ID INTEGER PRIMARY KEY AUTOINCREMENT);
sql = u"CREATE TABLE if not exists " + tbname + u" (ID INTEGER PRIMARY KEY AUTOINCREMENT);"
self.cur.execute(sql)
self.con.commit() #
# endregion
# region
def addSQLtableColumn(self, tbname, columnName, genre):
'''
:param tbname:
:param columnName:
:param genre:
'''
# ALTER TABLE ADD ;
sql = u"ALTER TABLE " + tbname + u" ADD " + columnName + " " + genre +";"
self.cur.execute(sql)
self.con.commit() #
def addSQLtableRow(self, tbname, rowNum):
'''
:param tbname:
:param rowNum:
:return: None
'''
# INSERT INTO (ID) VALUES ( );
rownum = [(i,) for i in range(rowNum)]
sql = "INSERT INTO " + tbname + " (ID) VALUES (?);"
self.cur.executemany(sql, rownum)
# for row in range(1, rowNum+1):
# sql = "INSERT INTO " + tbname + " (ID) VALUES (" + str(row) + ");"
# self.cur.execute(sql)
self.con.commit() #
def setSQLtableValue(self, tbname, column, row, value):
'''
:param tbname:
:param row:
:param column:
:param value:
'''
# UPDATE SET = WHERE ID= ;
sql = u"UPDATE " + tbname + u" SET " +column+ "='" +value+ "' WHERE ID=" +str(row)+ ";"
self.cur.execute(sql)
self.con.commit() #
# endregion
# region
def getSQLtableRowNum(self, tbname):
'''
:param tbname:
:return:
'''
result = 0
sql = "SELECT COUNT(*) FROM " + tbname + ";"
self.cur.execute(sql)
for value in self.cur:
return value[0]
return result
def getSQLtableColumnName(self, tbname):
'''
:param taname:
:return:
'''
sql = "PRAGMA table_info([" +tbname+ "])"
self.cur.execute(sql)
NameList = []
for value in self.cur:
result = value[1]
if result and result != "ID":
NameList.append(result)
return NameList
def getSQLtableValue(self, tbname, column, row):
'''
:param tbname:
:param row:
:param column:
:return
'''
#SELECT FROM WHERE ID = ;
sql = "SELECT " +column+ " FROM " +tbname+ " WHERE ID=" +str(row)+ ";"
self.cur.execute(sql)
for value in self.cur:
return value[0]
def getSQLtableColumn(self, tbname, column):
'''
:param tbname:
:param column:
:return
'''
#SELECT FROM ;
sql = "SELECT " +column+ " FROM " +tbname+ ";"
valueList = []
self.cur.execute(sql)
for value in self.cur:
valueList.append(value[0])
return valueList
def getSQLtableRow(self, tbname, row):
'''
:param tbname:
:param row:
:return:
'''
# SELECT * FROM WHERE ID= ;
sql = "SELECT * FROM " + tbname + " WHERE ID="+ str(row) +";"
self.cur.execute(sql)
for value in self.cur:
valueList = list(value)
valueList.pop(0)
return valueList
# endregion
# region
def delSQLtableRow(self, tbname, startRow, rowNum=1):
'''
:param tbname:
:param rowNum:
:param rowNum:
'''
# DELETE FROM WHERE ID = ;
rowList = [(i,) for i in range(startRow, startRow+rowNum)]
sql = "DELETE FROM " + tbname + " WHERE ID = ?;"
self.cur.executemany(sql, rowList)
# for row in range(startRow, startRow + rowNum):
# sql = "DELETE FROM " + tbname + " WHERE ID = " + str(row) + ";"
# self.cur.execute(sql)
self.con.commit() #
def delSQLtableColumn(self, tbname, columnName):
'''
SQLite ， 。
:param tbname:
:param columnName:
:param genre:
'''
# ALTER TABLE drop ; #SQLite
tbName = "tbName0"
CloumnNameList = self.getSQLtableColumnName(tbname)
if columnName in CloumnNameList:
CloumnNameList.remove(columnName)
CloumnNameList.insert(0, "ID")
strName = ','.join(CloumnNameList)
# create table as select from where 1 = 1;
sql = u"create table "+tbName+" as select "+strName+" from "+tbname+" where 1 = 1"
self.cur.execute(sql)
self.con.commit() #
self.delSQLtable(tbname)
self.removeSQLtableName(tbName, tbname)
def removeSQLtableName(self, tbname, newTbname):
'''
:param oldTbName:
:param newTbName:
:return: None
'''
# alter table rename to ;
sql = u"alter table "+tbname+" rename to "+newTbname+";"
self.cur.execute(sql)
self.con.commit() #
def ClearSQLtable(self, tbname):
'''
:param tbname:
'''
# DELETE FROM table_name WHERE[condition];
sql = "DELETE FROM " +tbname+ ";"
self.cur.execute(sql)
self.con.commit() #
def delSQLtable(self, tbname):
'''
:param tbname:
:return: None
'''
# drop table record;
sql = u"drop table "+tbname+";"
self.cur.execute(sql)
self.con.commit() #
# endregion
if __name__ == '__main__':
print("Python SQLite ")
class sqliteTest():
def __init__(self):
self.DB_File = "./sqlite.db"
self.tableName = "sqlite"
# mysql.ini ，
if os.path.exists(self.DB_File):
os.remove(self.DB_File)
self.sqlite = SQLiteTools()
self.sqlite.createConnection(self.DB_File)
#
def createTable(self):
if not self.sqlite.selectTableExist(self.tableName):
self.sqlite.createSQLtable(self.tableName)
#
def addData(self):
self.sqlite.addSQLtableColumn(self.tableName, "month1", "text")
self.sqlite.addSQLtableColumn(self.tableName, "month2", "text")
self.sqlite.addSQLtableColumn(self.tableName, "month3", "text")
self.sqlite.addSQLtableColumn(self.tableName, "month4", "text")
self.sqlite.addSQLtableRow(self.tableName, 30)
self.sqlite.setSQLtableValue(self.tableName, "month1", 0, "1-0")
self.sqlite.setSQLtableValue(self.tableName, "month1", 1, "1-1")
self.sqlite.setSQLtableValue(self.tableName, "month2", 2, "2-2")
self.sqlite.setSQLtableValue(self.tableName, "month2", 3, "2-3")
#
def getData(self):
value = self.sqlite.getSQLtableRowNum(self.tableName)
print(" ：", value)
value = self.sqlite.getSQLtableColumnName(self.tableName)
print(" ( ID)：", value)
value = self.sqlite.getSQLtableValue(self.tableName, "month1", 0)
print("month1 , ： ", value)
value = self.sqlite.getSQLtableColumn(self.tableName, "month2")
print("month2 ： ", value)
value = self.sqlite.getSQLtableRow(self.tableName, 1)
print(" ( ID)： ", value)
#
def delData(self):
value = self.sqlite.getSQLtableRowNum(self.tableName)
print(" ：", value)
self.sqlite.delSQLtableRow(self.tableName, 10, 5)
value = self.sqlite.getSQLtableRowNum(self.tableName)
print(" ：", value)
value = self.sqlite.getSQLtableColumnName(self.tableName)
print(" ( ID)", value)
self.sqlite.delSQLtableColumn(self.tableName, "month3")
value = self.sqlite.getSQLtableColumnName(self.tableName)
print(" ( ID)", value)
self.sqlite.ClearSQLtable(self.tableName)
self.sqlite.delSQLtable(self.tableName)
win = sqliteTest() # ，
win.createTable() #
win.addData() #
win.getData() #
win.delData() #
PyQt 5 조작 SQLite
# coding:utf-8
import os
from PyQt5.QtSql import QSqlDatabase, QSqlQuery
class SQLiteTools():
def __init__(self):
pass
# region
def createConnection(self, DB_name):
'''
:param DB_name:
:return: null
'''
# ， sqlite3
db=QSqlDatabase.addDatabase("QSQLITE")
# test0.db, ，
db.setDatabaseName(DB_name)
#
db.open()
#
self.que = QSqlQuery()
def selectTableExist(self, tbname):
'''
:param tbname:
:return: True, False
'''
sql = u"select * from sqlite_master where type='table' and name = '" + tbname + u"';"
self.que.exec_(sql)
return self.que.next()
def createSQLtable(self, tbname):
'''
， ， :ID， :INTEGER,
:param tbname:
:return: null
'''
# CREATE TABLE if not exists (ID INTEGER PRIMARY KEY AUTOINCREMENT);
sql = u"CREATE TABLE if not exists " + tbname + u" (ID INTEGER PRIMARY KEY AUTOINCREMENT);"
self.que.exec_(sql)
# endregion
# region
def addSQLtableColumn(self, tbname, columnName, genre):
'''
:param tbname:
:param columnName:
:param genre:
:return: null
'''
# ALTER TABLE ADD ;
sql = u"ALTER TABLE " + tbname + u" ADD " + columnName + " " + genre +";"
self.que.exec_(sql)
def addSQLtableRow(self, tbname, rowNum):
'''
:param tbname:
:param rowNum:
:return: null
'''
# INSERT INTO (ID) VALUES ( );
for row in range(rowNum):
sql = "INSERT INTO " + tbname + " (ID) VALUES (" + str(row) + ");"
self.que.exec_(sql)
def setSQLtableValue(self, tbname, column, row, value):
'''
:param tbname:
:param column:
:param row:
:param value:
:return: null
'''
# UPDATE SET = WHERE ID= ;
sql = u"UPDATE " + tbname + u" SET " +column+ "='" +value+ "' WHERE ID=" +str(row)+ ";"
self.que.exec_(sql)
# endregion
# region
def getSQLtableRowNum(self, tbname):
'''
:param tbname:
:return:
'''
result = 0
sql = "SELECT COUNT(*) FROM " + tbname + ";"
self.que.exec_(sql)
if self.que.next():
result = self.que.value(0)
return result
def getSQLtableColumnName(self, tbname):
'''
:param taname:
:return:
'''
sql = "PRAGMA table_info([" +tbname+ "])"
self.que.exec_(sql)
NameList = []
while self.que.next():
result = self.que.value(1)
if result and result != "ID":
NameList.append(result)
return NameList
def getSQLtableValue(self, tbname, column, row):
'''
:param tbname:
:param row:
:param column:
:return:
'''
#SELECT FROM WHERE ID = ;
value = 0
sql = "SELECT " +column+ " FROM " +tbname+ " WHERE ID=" +str(row)+ ";"
self.que.exec_(sql)
if self.que.next():
value = self.que.value(0)
return value
def getSQLtableColumn(self, tbname, column):
'''
:param tbname:
:param column:
:return:
'''
#SELECT FROM ;
sql = "SELECT " +column+ " FROM " +tbname+ ";"
value_list = []
if self.que.exec_(sql):
column_index = self.que.record().indexOf(column) #
while self.que.next():
value = self.que.value(column_index)
value_list.append(value)
return value_list
def getSQLtableRow(self, tbname, row):
'''
:param tbname:
:param row:
:return:
'''
# SELECT * FROM WHERE ID= ;
columnNum = len(self.getSQLtableColumnName(tbname))
sql = "SELECT * FROM " + tbname + " WHERE ID="+ str(row) +";"
self.que.exec_(sql)
valueList = []
while self.que.next():
for i in range(1, columnNum+1):
result = self.que.value(i)
valueList.append(result)
return valueList
# endregion
# region
def delSQLtableColumn(self, tbname, columnName):
'''
SQLite ， 。
:param tbname:
:param columnName:
:return: null
'''
# ALTER TABLE drop ; #SQLite
tbName = "tbName0"
CloumnNameList = self.getSQLtableColumnName(tbname)
if columnName in CloumnNameList:
CloumnNameList.remove(columnName)
CloumnNameList.insert(0, "ID")
strName = ','.join(CloumnNameList)
# create table as select from where 1 = 1;
sql = u"create table "+tbName+" as select "+strName+" from "+tbname+" where 1 = 1"
self.que.exec_(sql)
self.delSQLtable(tbname)
self.removeSQLtableName(tbName, tbname)
def delSQLtableRow(self, tbname, startRow, rowNum=1):
'''
:param tbname:
:param startRow:
:param rowNum:
:return: null
'''
# DELETE FROM WHERE ID = ;
for row in range(startRow, startRow + rowNum):
sql = "DELETE FROM " + tbname + " WHERE ID = " + str(row) + ";"
self.que.exec_(sql)
def removeSQLtableName(self, tbname, newTbname):
'''
:param tbname:
:param newTbname:
:return: null
'''
# alter table rename to ;
sql = u"alter table "+tbname+" rename to "+newTbname+";"
self.que.exec_(sql)
def ClearSQLtableRowValue(self, tbname):
'''
:param tbname:
:return: null
'''
# DELETE FROM table_name WHERE[condition];
sql = "DELETE FROM " +tbname+ ";"
self.que.exec_(sql)
def delSQLtable(self, tbname):
'''
:param tbname:
:return: null
'''
# drop table record;
sql = u"drop table "+tbname+";"
self.que.exec_(sql)
# endregion
if __name__ == '__main__':
print("PyQt5 SQLite ")
class sqliteTest():
def __init__(self):
self.PathFile = "./sqlite.db"
self.tableName = "sqlite"
# mysql.ini ，
if os.path.exists(self.PathFile):
os.remove(self.PathFile)
self.sqlite = SQLiteTools()
self.sqlite.createConnection(self.PathFile)
#
def createTable(self):
if not self.sqlite.selectTableExist(self.tableName):
self.sqlite.createSQLtable(self.tableName)
#
def addData(self):
self.sqlite.addSQLtableColumn(self.tableName, "month1", "text")
self.sqlite.addSQLtableColumn(self.tableName, "month2", "text")
self.sqlite.addSQLtableColumn(self.tableName, "month3", "text")
self.sqlite.addSQLtableColumn(self.tableName, "month4", "text")
self.sqlite.addSQLtableRow(self.tableName, 30)
self.sqlite.setSQLtableValue(self.tableName, "month1", 0, "1-0")
self.sqlite.setSQLtableValue(self.tableName, "month1", 1, "1-1")
self.sqlite.setSQLtableValue(self.tableName, "month2", 2, "2-2")
self.sqlite.setSQLtableValue(self.tableName, "month2", 3, "2-3")
#
def getData(self):
value = self.sqlite.getSQLtableRowNum(self.tableName)
print(" ：", value)
value = self.sqlite.getSQLtableColumnName(self.tableName)
print(" ( ID )：", value)
value = self.sqlite.getSQLtableValue(self.tableName, "month1", 0)
print("month1 ， ：", value)
value = self.sqlite.getSQLtableColumn(self.tableName, "month2")
print("month2 ：", value)
value = self.sqlite.getSQLtableRow(self.tableName, 2)
print(" ( ID)： ", value)
#
def delData(self):
value = self.sqlite.getSQLtableRowNum(self.tableName)
print(" ：", value)
self.sqlite.delSQLtableRow(self.tableName, 10, 5)
value = self.sqlite.getSQLtableRowNum(self.tableName)
print(" ：", value)
value = self.sqlite.getSQLtableColumnName(self.tableName)
print(" ( ID)：", value)
self.sqlite.delSQLtableColumn(self.tableName, "month3")
value = self.sqlite.getSQLtableColumnName(self.tableName)
print(" ( ID)", value)
self.sqlite.ClearSQLtableRowValue(self.tableName)
self.sqlite.delSQLtable(self.tableName)
win = sqliteTest()
win.createTable()
win.addData()
win.getData()
win.delData()
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