找不到列或用户定义的函数或聚合,或者名称不明确

cannot find column or the user-defined function or aggregate, or the name is ambigous

我在尝试 INNER JOIN 2 tables 时遇到此错误。

"cannot find column "TE" 或用户自定义函数或聚合 "TE.UserID",或名称有歧义"

有什么想法吗?

我试过将 table 名称添加到 Select 语句中,如下所示。实际上 运行 SQL 服务器中的查询。但它对 Python ODBC 没有任何作用。

"Select TP.UserID, Phone "

但这并没有帮助。

userid = 'dd88'

try:
    connection = pypyodbc.connect('Driver={SQL Server};Server=MyServerName;Database=MyDatabaseName;Trusted_Connection=yes;')
except pypyodbc.Error as ex:
    sqlstate = ex.args[0]
    if sqlstate == '28000':
        print("You do not have access.") 
cursor = connection.cursor() 
SQLCommand = ("SELECT UserID, Phone "
    "FROM dbo.SEC_UserProfile as TP INNER JOIN dbo.SEC_User as TE "
    "ON TP.UserID = TE.UserID "
    "(nolock)"
    "WHERE UserID LIKE ?")
Values = ['%' + userid + '%']
cursor.execute(SQLCommand,Values)
results = cursor.fetchone()
if results:
    print(connections + " " + str(results[0]) + " " + str(results[1])) # enters results in entry
    connection.close()
else:
    print(connections + " - NO")
    connection.close()

UserID 在两个 table 中。

您需要通过在 select 和 where 子句中定义您需要来自哪个 table 的 UserID 来更改您的 sql 语句,例如:

SQLCommand = ("SELECT TP.UserID, Phone "
    "FROM dbo.SEC_UserProfile as TP (nolock) INNER JOIN dbo.SEC_User as TE "
    "ON TP.UserID = TE.UserID "
    "WHERE TP.UserID LIKE ?")

@TabAlleman 说的对,(nolock) 的地方不对。更新了我的答案。

好吧,一个问题是你把 (nolock) 放错了地方。它应该紧跟在 table 别名之后,而不是连接条件:

此外,您在构建此 SQLCommand 字符串时不需要添加连接运算符吗?我从未使用过 Python,但如果这是 .net 代码,它甚至无法编译。

SQLCommand = ("SELECT TP.UserID, Phone " +
    "FROM dbo.SEC_UserProfile as TP (nolock) INNER JOIN dbo.SEC_User as TE (nolock)" +
    "ON TP.UserID = TE.UserID " +
    "WHERE TP.UserID LIKE ?")