英文:
Inconsistencies with mySQL delete query
问题
我遇到了关于SQL查询结果的一些不一致性问题。
以下是我正在使用的预处理语句查询。
delete ROLE_USER_MAP
from ROLE_USER_MAP inner join ROLE_MANAGER on ROLE_USER_MAP.R_ID=ROLE_MANAGER.R_ID
where ROLE_USER_MAP.U_ID= ? and ROLE_MANAGER.M_ID= ?
以下是我在Java应用程序中调用预处理语句的方式。
public void deleteRoles(String mID, String uID) throws OperationFailedException
{
Connection conn = null;
try
{
conn = this.getConnection();
this.deleteRoles(mID, uID, conn);
}
catch (Exception e)
{
AdminLogger.error(this.getClass(), e);
throw new OperationFailedException("无法删除用户的角色。");
}
finally
{
try
{
conn.close();
}
catch (Exception e)
{
}
}
}
private void deleteRoles(String mID, String uID, Connection conn) throws SQLException
{
PreparedStatement stmt = null;
try
{
stmt = *retrieving ps*
stmt.setString(1, uID);
stmt.setString(2, mID);
int i = stmt.executeUpdate(); // 这里返回 1
if (i < 1)
{
throw new SQLException("无法删除用户的角色。");
}
} finally
{
stmt.close();
}
}
在本地和SSMS中运行良好，所有符合where子句的行都被删除，但是当我尝试部署到托管服务器时，只有表中的第一行被删除。
有谁可以帮我解决这个问题吗？
提前感谢您的帮助。
英文:
I've encountered an some inconsistencies regarding the results from an SQL query.
Here is the query which I'm using as a prepared statement.
delete ROLE_USER_MAP
from ROLE_USER_MAP inner join ROLE_MANAGER on ROLE_USER_MAP.R_ID=ROLE_MANAGER.R_ID
where ROLE_USER_MAP.U_ID= ? and ROLE_MANAGER.M_ID= ?
Here is how I calling the prepared statement in my Java application.
public void deleteRoles(String mID, String uID) throws OperationFailedException
{
Connection conn = null;
try
{
conn = this.getConnection();
this.deleteRoles(mID, uID, conn);
}
catch (Exception e)
{
AdminLogger.error(this.getClass(), e);
throw new OperationFailedException("Failed to remove roles for user.");
}
finally
{
try
{
conn.close();
}
catch (Exception e)
{
}
}
}
private void deleteRoles(String mID, String uID, Connection conn) throws SQLException
{
PreparedStatement stmt = null;
try
{
stmt = *retrieving ps*
stmt.setString(1, uID);
stmt.setString(2, mID);
int i = stmt.executeUpdate(); // returns 1 here
if (i < 1)
{
throw new SQLException("Failed to remove roles for user.");
}
} finally
{
stmt.close();
}
}
It runs fine locally and in SSMS with all rows fitting the where clause being deleted but when I try to deploy it to my hosted server, only the first row in the table is being deleted.
Can anyone help me with this?
Thanks in advance.
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