Python MySQLdb.IntegrityError方法代码示例

# 需要导入模块: import MySQLdb [as 别名]
# 或者: from MySQLdb import IntegrityError [as 别名]
def execute(self, query, args=None):
        try:
            # args is None means no string interpolation
            return self.cursor.execute(query, args)
        except Database.OperationalError as e:
            # Map some error codes to IntegrityError, since they seem to be
            # misclassified and Django would prefer the more logical place.
            if e.args[0] in self.codes_for_integrityerror:
                six.reraise(utils.IntegrityError, utils.IntegrityError(*tuple(e.args)), sys.exc_info()[2])
            raise 

# 需要导入模块: import MySQLdb [as 别名]
# 或者: from MySQLdb import IntegrityError [as 别名]
def executemany(self, query, args):
        try:
            return self.cursor.executemany(query, args)
        except Database.OperationalError as e:
            # Map some error codes to IntegrityError, since they seem to be
            # misclassified and Django would prefer the more logical place.
            if e.args[0] in self.codes_for_integrityerror:
                six.reraise(utils.IntegrityError, utils.IntegrityError(*tuple(e.args)), sys.exc_info()[2])
            raise 

# 需要导入模块: import MySQLdb [as 别名]
# 或者: from MySQLdb import IntegrityError [as 别名]
def check_constraints(self, table_names=None):
        """
        Checks each table name in `table_names` for rows with invalid foreign
        key references. This method is intended to be used in conjunction with
        `disable_constraint_checking()` and `enable_constraint_checking()`, to
        determine if rows with invalid references were entered while constraint
        checks were off.

        Raises an IntegrityError on the first invalid foreign key reference
        encountered (if any) and provides detailed information about the
        invalid reference in the error message.

        Backends can override this method if they can more directly apply
        constraint checking (e.g. via "SET CONSTRAINTS ALL IMMEDIATE")
        """
        cursor = self.cursor()
        if table_names is None:
            table_names = self.introspection.table_names(cursor)
        for table_name in table_names:
            primary_key_column_name = self.introspection.get_primary_key_column(cursor, table_name)
            if not primary_key_column_name:
                continue
            key_columns = self.introspection.get_key_columns(cursor, table_name)
            for column_name, referenced_table_name, referenced_column_name in key_columns:
                cursor.execute("""
                    SELECT REFERRING.`%s`, REFERRING.`%s` FROM `%s` as REFERRING
                    LEFT JOIN `%s` as REFERRED
                    ON (REFERRING.`%s` = REFERRED.`%s`)
                    WHERE REFERRING.`%s` IS NOT NULL AND REFERRED.`%s` IS NULL"""
                    % (primary_key_column_name, column_name, table_name, referenced_table_name,
                    column_name, referenced_column_name, column_name, referenced_column_name))
                for bad_row in cursor.fetchall():
                    raise utils.IntegrityError("The row in table '%s' with primary key '%s' has an invalid "
                        "foreign key: %s.%s contains a value '%s' that does not have a corresponding value in %s.%s."
                        % (table_name, bad_row[0],
                        table_name, column_name, bad_row[1],
                        referenced_table_name, referenced_column_name)) 

# 需要导入模块: import MySQLdb [as 别名]
# 或者: from MySQLdb import IntegrityError [as 别名]
def _crawl(self, mid, cur):
        """
        抓取并持久化用户信息
        :param mid: B站用户id
        :param cur: mysql游标
        :return: None
        """
        if self._is_member_exist(cur, mid):
            print(f'数据库中已存在此用户mid:{mid}, 忽略')
            return
        member_info = self._get_member_by_mid(mid)
        if member_info is None:
            return
        mid = member_info['mid']
        name = member_info['name']
        sign = member_info['sign'].replace("'", "\\\'")
        rank = member_info['rank']
        level = member_info['level']
        jointime = member_info['jointime']
        moral = member_info['moral']
        silence = member_info['silence']
        birthday = member_info['birthday']
        coins = member_info['coins']
        fans_badge = member_info['fans_badge']
        vip_type = member_info['vip']['type']
        vip_status = member_info['vip']['status']
        try:
            cur.execute(f"INSERT INTO bilibili_member "
                        f"(mid, name, sign, `rank`, `level`, jointime, moral, silence, birthday, coins, fans_badge, vip_type, vip_status) "
                        f"VALUES "
                        f"({mid}, '{name}', '{sign}', {rank}, {level}, {jointime}, {moral}, {silence}, '{birthday}', "
                        f"{coins}, {fans_badge}, {vip_type}, {vip_status})"
                        )
            print(f'成功插入用户数据: {mid}, 当前代理:{self.cur_proxy["https"]}')
        except MySQLdb.ProgrammingError as e:
            print(f'插入用户: {mid} 数据出错:{e}')
            raise SqlInsertException(str(e))
        except MySQLdb.IntegrityError:
            print(f'用户: {mid} 数据已存在,不作插入')
            raise SqlAlreadyExistsException('数据已存在') 

# 需要导入模块: import MySQLdb [as 别名]
# 或者: from MySQLdb import IntegrityError [as 别名]
def _insert_failure_record(cur, mid, state, remark):
        remark = remark.replace("'", "\\\'")
        try:
            cur.execute(
                "INSERT INTO failure_record (mid, remark, state) "
                f"VALUES ({mid}, '{remark}', '{state}')"
            )
        except MySQLdb.ProgrammingError as e:
            print(f'插入失败日志: {mid} 数据出错:{e}')
        except MySQLdb.IntegrityError:
            print(f'失败日志: {mid} 数据已存在,不作插入') 

# 需要导入模块: import MySQLdb [as 别名]
# 或者: from MySQLdb import IntegrityError [as 别名]
def delete(cls, id):
        sql = 'delete from movie_order where id=%s'
        try:
            store.execute(sql, id)
            store.commit()
        except IntegrityError:
            store.rollback()
            return False

        return True 

# 需要导入模块: import MySQLdb [as 别名]
# 或者: from MySQLdb import IntegrityError [as 别名]
def delete(cls, id):
        sql = 'delete from movie_order where id=%s'
        try:
            store.execute(sql, id)
            store.commit()
        except IntegrityError:
            store.rollback()
            return False

        cls.clear_mc(id)
        return True 

# 需要导入模块: import MySQLdb [as 别名]
# 或者: from MySQLdb import IntegrityError [as 别名]
def execute(self, query, args=None):
        try:
            return self.cursor.execute(query, args)
        except Database.IntegrityError as e:
            six.reraise(utils.IntegrityError, utils.IntegrityError(*tuple(e.args)), sys.exc_info()[2])
        except Database.OperationalError as e:
            # Map some error codes to IntegrityError, since they seem to be
            # misclassified and Django would prefer the more logical place.
            if e.args[0] in self.codes_for_integrityerror:
                six.reraise(utils.IntegrityError, utils.IntegrityError(*tuple(e.args)), sys.exc_info()[2])
            six.reraise(utils.DatabaseError, utils.DatabaseError(*tuple(e.args)), sys.exc_info()[2])
        except Database.DatabaseError as e:
            six.reraise(utils.DatabaseError, utils.DatabaseError(*tuple(e.args)), sys.exc_info()[2]) 

# 需要导入模块: import MySQLdb [as 别名]
# 或者: from MySQLdb import IntegrityError [as 别名]
def executemany(self, query, args):
        try:
            return self.cursor.executemany(query, args)
        except Database.IntegrityError as e:
            six.reraise(utils.IntegrityError, utils.IntegrityError(*tuple(e.args)), sys.exc_info()[2])
        except Database.OperationalError as e:
            # Map some error codes to IntegrityError, since they seem to be
            # misclassified and Django would prefer the more logical place.
            if e.args[0] in self.codes_for_integrityerror:
                six.reraise(utils.IntegrityError, utils.IntegrityError(*tuple(e.args)), sys.exc_info()[2])
            six.reraise(utils.DatabaseError, utils.DatabaseError(*tuple(e.args)), sys.exc_info()[2])
        except Database.DatabaseError as e:
            six.reraise(utils.DatabaseError, utils.DatabaseError(*tuple(e.args)), sys.exc_info()[2]) 

# 需要导入模块: import MySQLdb [as 别名]
# 或者: from MySQLdb import IntegrityError [as 别名]
def check_constraints(self, table_names=None):
        """
        Checks each table name in `table_names` for rows with invalid foreign key references. This method is
        intended to be used in conjunction with `disable_constraint_checking()` and `enable_constraint_checking()`, to
        determine if rows with invalid references were entered while constraint checks were off.

        Raises an IntegrityError on the first invalid foreign key reference encountered (if any) and provides
        detailed information about the invalid reference in the error message.

        Backends can override this method if they can more directly apply constraint checking (e.g. via "SET CONSTRAINTS
        ALL IMMEDIATE")
        """
        cursor = self.cursor()
        if table_names is None:
            table_names = self.introspection.table_names(cursor)
        for table_name in table_names:
            primary_key_column_name = self.introspection.get_primary_key_column(cursor, table_name)
            if not primary_key_column_name:
                continue
            key_columns = self.introspection.get_key_columns(cursor, table_name)
            for column_name, referenced_table_name, referenced_column_name in key_columns:
                cursor.execute("""
                    SELECT REFERRING.`%s`, REFERRING.`%s` FROM `%s` as REFERRING
                    LEFT JOIN `%s` as REFERRED
                    ON (REFERRING.`%s` = REFERRED.`%s`)
                    WHERE REFERRING.`%s` IS NOT NULL AND REFERRED.`%s` IS NULL"""
                    % (primary_key_column_name, column_name, table_name, referenced_table_name,
                    column_name, referenced_column_name, column_name, referenced_column_name))
                for bad_row in cursor.fetchall():
                    raise utils.IntegrityError("The row in table '%s' with primary key '%s' has an invalid "
                        "foreign key: %s.%s contains a value '%s' that does not have a corresponding value in %s.%s."
                        % (table_name, bad_row[0],
                        table_name, column_name, bad_row[1],
                        referenced_table_name, referenced_column_name)) 

# 需要导入模块: import MySQLdb [as 别名]
# 或者: from MySQLdb import IntegrityError [as 别名]
def dbupdate(db,tablename, keys, values, condition=None):
    """
    DEFINITION:
        Perform an update call to add values into specific keys of the selected table
    PARAMETERS:
    Variables:
        - db:           (mysql database) defined by mysql.connect().
        - tablename:    name of the table
        - keys:         (list) list of keys to modify
        - values:       (list) list of values for the keys
    Kwargs:
        - condition:     (string) put in an optional where condition
    APPLICATION:
        >>>dbupdate(db, 'DATAINFO', [], [], condition='SensorID="MySensor"')
        returns a string with either 'success' or an error message
    """
    try:
        if not len(keys) == len(values):
            print("dbupdate: amount of keys does not fit provided values")
            return False
    except:
        print("dbupdate: keys and values must be provided as list e.g. [key1,key2,...]")
    if not len(keys) > 0:
        print("dbupdate: provide at least on key/value pair")
        return False

    if not condition:
        condition = ''
    else:
        condition = 'WHERE %s' % condition

    setlist = []
    for idx,el in enumerate(keys):
        st = '%s="%s"' % (el, values[idx])
        setlist.append(st)
    if len(setlist) > 0:
        setstring = ','.join(setlist)
    else:
        setstring = setlist[0]
    updatesql = 'UPDATE %s SET %s %s' % (tablename, setstring, condition)
    cursor = db.cursor()
    print(updatesql)
    try:
        cursor.execute(updatesql)
    except mysql.IntegrityError as message:
        return message
    except mysql.Error as message:
        return message
    except:
        return 'dbupdate: unkown error'
    db.commit()
    cursor.close()
    return 'success'