Question

以下代码中的assert语句在运行mariadb的环境中失败，而它在运行mysql的（较旧）环境中运行良好。 mariadb环境似乎不会持久化insert语句的结果。与命令行客户端连接确认插入未被保留。

import MySQLdb

def newCon():
    return MySQLdb.connect('localhost', 'root', '', 'test')

def testStatement(con, aStatement):
    # print "---"
    # print aStatement
    cur = con.cursor()
    cur.execute(aStatement)
    result = cur.fetchall()
    cur.close()
    # print result
    return result

def test():
    con = newCon()

    testStatement(con, "DROP TABLE IF EXISTS TestTable")
    testStatement(con, """CREATE TABLE TestTable (
            id INT NOT NULL AUTO_INCREMENT,
            AccountId VARCHAR(50),
            PRIMARY KEY(id))""")
    testStatement(con, "INSERT INTO TestTable (AccountId) VALUES ('XYZ')")
    myCount1 = testStatement(con, "SELECT count(*) from TestTable")[0][0]

    con.close()
    con = newCon()

    myCount2 = testStatement(con, "SELECT count(*) from TestTable")[0][0]

    con.close()

    assert myCount1 == myCount2, \
      "count1 = " + str(myCount1) + " != count2 = " + str(myCount2)

test()

运行良好的环境是： CentOS 6.7 python 2.6.6 mysql-python 1.2.3 mysql服务器5.1.73

失败的环境是： Fedora 21 python 2.7.8 mysql-python 1.2.3 mariadb server 10.0.21

失败的输出显示：

Test2.py:10: Warning: Table 'mysql.table_stats' doesn't exist
  cur.execute(aStatement)
Traceback (most recent call last):
  File "Test2.py", line 37, in <module>
    test()
  File "Test2.py", line 35, in test
    "count1 = " + str(myCount1) + " != count2 = " + str(myCount2)
AssertionError: count1 = 1 != count2 = 0

我不知道table_stats警告的内容。

问题：我正确使用api吗？任何人都可以通过mariadb环境进行此测试吗？

Answer 1

您尚未承诺交易。

MariaDB上的Python MySQL插入失败：不会持久保存到新连接

1 个答案: