Why is my SQL Server query failing?

问题

 connect();
 $arr = mssql_fetch_assoc(mssql_query("SELECT Applications.ProductName,
        Applications.ProductVersion, Applications.ProductSize, 
        Applications.Description, Applications.ProductKey, Applications.ProductKeyID,
        Applications.AutomatedInstaller, Applications.AutomatedInstallerName,
        Applications.ISO, Applications.ISOName, Applications.Internet,
        Applications.InternetURL, Applications.DatePublished, Applications.LicenseID,
        Applications.InstallationGuide, Vendors.VendorName
FROM Applications
INNER JOIN Vendors ON Applications.VendorID = Vendors.VendorID
WHERE ApplicationID = ".$ApplicationID));

$query1 = mssql_query("SELECT Issues.AppID, Issues.KnownIssues
      FROM Issues 
      WHERE Issues.AppID=".$ApplicationID);   
$issues = mssql_fetch_assoc($query1);
$query2 = mssql_query("SELECT ApplicationInfo.AppID,
               ApplicationInfo.Support_Status, ApplicationInfo.UD_Training,
               ApplicationInfo.AtomicTraining, ApplicationInfo.VendorURL
   FROM  ApplicationInfo
   WHERE ApplicationInfo.AppID = ".$ApplicationID);
$row = mssql_fetch_assoc($query2);
function connect(){
 $connect =  mssql_connect(DBSERVER, DBO, DBPW) or 
        die("Unable to connect to server");
 $selected = mssql_select_db(DBNAME, $connect) or 
        die("Unable to connect to database");
 return $connect;
}

Above is the code. The first query/fetch_assoc works perfectly fine, however the next 2 queries fail and I cannot figure out why. Here is the error statement that shows up from php:

Warning: mssql_query() [function.mssql-query]: message: Invalid object name 'Issues'. (severity 16) in /srv/www/htdocs/agreement.php on line 47

Warning: mssql_query() [function.mssql-query]: General SQL Server error: Check messages from the SQL Server (severity 16) in /srv/www/htdocs/agreement.php on line 47 Warning: mssql_query() [function.mssql-query]: Query failed in /srv/www/htdocs/agreement.php on line 47

Warning: mssql_fetch_assoc(): supplied argument is not a valid MS SQL-result resource in /srv/www/htdocs/agreement.php on line 48

Warning: mssql_query() [function.mssql-query]: message: Invalid object name 'software.software_dbo.ApplicationInfo'. (severity 16) in /srv/www/htdocs/agreement.php on line 51

Warning: mssql_query() [function.mssql-query]: General SQL Server error: Check messages from the SQL Server (severity 16) in /srv/www/htdocs/agreement.php on line 51

Warning: mssql_query() [function.mssql-query]: Query failed in /srv/www/htdocs/agreement.php on line 51

Warning: mssql_fetch_assoc(): supplied argument is not a valid MS SQL-result resource in /srv/www/htdocs/agreement.php on line 52

The error clearly centers around the fact that the query is not executing. In my database I have a table called Issues and a table called ApplicationInfo so I am unsure why it is telling me that they are invalid objects.

回答1:

Check that you're querying the right database or schema.

software.software_dbo.ApplicationInfo means:

a database named software
a schema named software_dbo - likely this is the problem. Likely is dbo on your SQL Server.
a view/table named ApplicationInfo

Perhaps check what the value of DBO, amongst the other arguments, is in this statement: $connect = mssql_connect(DBSERVER, DBO, DBPW)

回答2:

Check to see that the user you are connecting with has permission to use the tables you are trying to query. Seams like the issue is that the tables cannot be found.

The best way to handle this would be to grant the user permssions to all objects in that database:

GRANT SELECT, INSERT, DELETE <any other permissions that user needs> ON `database`.`*` TO `user`@`localhost` IDENTIFIED BY 'password'

来源：https://stackoverflow.com/questions/2958395/why-is-my-sql-server-query-failing

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