mssql.php

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                $pk_name  = strtolower($pk_name);
            } else {
                $key_name = strtoupper($key_name);
                $pk_name  = strtoupper($pk_name);
            }
        }
        $table = $db->quote($table, 'text');
        $query = "EXEC sp_statistics @table_name=$table";
        $indexes = $db->queryCol($query, 'text', $key_name);
        if (PEAR::isError($indexes)) {
            return $indexes;
        }
        $query = "EXEC sp_pkeys @table_name=$table";
        $pk_all = $db->queryCol($query, 'text', $pk_name);
        $result = array();
        foreach ($indexes as $index) {
            if (!in_array($index, $pk_all) && ($index = $this->_fixIndexName($index))) {
                $result[$index] = true;
            }
        }

        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
            $result = array_change_key_case($result, $db->options['field_case']);
        }
        return array_keys($result);
    }

    // }}}
    // {{{ listDatabases()

    /**
     * list all databases
     *
     * @return mixed array of database names on success, a MDB2 error on failure
     * @access public
     */
    function listDatabases()
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $result = $db->queryCol('SELECT name FROM sys.databases');
        if (PEAR::isError($result)) {
            return $result;
        }
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
        }
        return $result;
    }

    // }}}
    // {{{ listUsers()

    /**
     * list all users
     *
     * @return mixed array of user names on success, a MDB2 error on failure
     * @access public
     */
    function listUsers()
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $result = $db->queryCol('SELECT DISTINCT loginame FROM master..sysprocesses');
        if (PEAR::isError($result) || empty($result)) {
            return $result;
        }
        foreach (array_keys($result) as $k) {
            $result[$k] = trim($result[$k]);
        }
        return $result;
    }

    // }}}
    // {{{ listFunctions()

    /**
     * list all functions in the current database
     *
     * @return mixed array of function names on success, a MDB2 error on failure
     * @access public
     */
    function listFunctions()
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $query = "SELECT name
                    FROM sysobjects
                   WHERE objectproperty(id, N'IsMSShipped') = 0
                    AND (objectproperty(id, N'IsTableFunction') = 1
                     OR objectproperty(id, N'IsScalarFunction') = 1)";
        /*
        SELECT ROUTINE_NAME
          FROM INFORMATION_SCHEMA.ROUTINES
         WHERE ROUTINE_TYPE = 'FUNCTION'
        */
        $result = $db->queryCol($query);
        if (PEAR::isError($result)) {
            return $result;
        }
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
            $result = array_map(($db->options['field_case'] == CASE_LOWER ? 'strtolower' : 'strtoupper'), $result);
        }
        return $result;
    }

    // }}}
    // {{{ listTableTriggers()

    /**
     * list all triggers in the database that reference a given table
     *
     * @param string table for which all referenced triggers should be found
     *
     * @return mixed array of trigger names on success,  otherwise, false which
     *               could be a db error if the db is not instantiated or could
     *               be the results of the error that occured during the
     *               querying of the sysobject module.
     * @access public
     */
    function listTableTriggers($table = null)
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $table = $db->quote($table, 'text');
        $query = "SELECT o.name
                    FROM sysobjects o
                   WHERE xtype = 'TR'
                     AND OBJECTPROPERTY(o.id, 'IsMSShipped') = 0";
        if (!is_null($table)) {
            $query .= " AND object_name(parent_obj) = $table";
        }

        $result = $db->queryCol($query);
        if (PEAR::isError($result)) {
            return $result;
        }

        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE &&
            $db->options['field_case'] == CASE_LOWER)
        {
            $result = array_map(($db->options['field_case'] == CASE_LOWER ?
                'strtolower' : 'strtoupper'), $result);
        }
        return $result;
    }

    // }}}
    // {{{ listViews()

    /**
     * list all views in the current database
     *
     * @param string database, the current is default
     *
     * @return mixed array of view names on success, a MDB2 error on failure
     * @access public
     */
    function listViews()
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $query = "SELECT name
                    FROM sysobjects
                   WHERE xtype = 'V'";
        /*
        SELECT *
          FROM sysobjects
         WHERE objectproperty(id, N'IsMSShipped') = 0
           AND objectproperty(id, N'IsView') = 1
        */

        $result = $db->queryCol($query);
        if (PEAR::isError($result)) {
            return $result;
        }

        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE &&
            $db->options['field_case'] == CASE_LOWER)
        {
            $result = array_map(($db->options['field_case'] == CASE_LOWER ?
                          'strtolower' : 'strtoupper'), $result);
        }
        return $result;
    }

    // }}}
    // {{{ dropIndex()

    /**
     * drop existing index
     *
     * @param string $table name of table that should be used in method
     * @param string $name  name of the index to be dropped
     *
     * @return mixed MDB2_OK on success, a MDB2 error on failure
     * @access public
     */
    function dropIndex($table, $name)
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $table = $db->quoteIdentifier($table, true);
        $name = $db->quoteIdentifier($db->getIndexName($name), true);
        return $db->exec("DROP INDEX $table.$name");
    }

    // }}}
    // {{{ listTableConstraints()

    /**
     * list all constraints in a table
     *
     * @param string $table name of table that should be used in method
     *
     * @return mixed array of constraint names on success, a MDB2 error on failure
     * @access public
     */
    function listTableConstraints($table)
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }
        $table = $db->quoteIdentifier($table, true);

        $query = "SELECT c.constraint_name
                    FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS c
                   WHERE c.constraint_catalog = DB_NAME()
                     AND c.table_name = '$table'";
        $constraints = $db->queryCol($query);
        if (PEAR::isError($constraints)) {
            return $constraints;
        }

        $result = array();
        foreach ($constraints as $constraint) {
            $constraint = $this->_fixIndexName($constraint);
            if (!empty($constraint)) {
                $result[$constraint] = true;
            }
        }

        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
            $result = array_change_key_case($result, $db->options['field_case']);
        }
        return array_keys($result);
    }

    // }}}
    // {{{ createSequence()

    /**
     * create sequence
     *
     * @param string $seq_name name of the sequence to be created
     * @param string $start    start value of the sequence; default is 1
     *
     * @return mixed MDB2_OK on success, a MDB2 error on failure
     * @access public
     */
    function createSequence($seq_name, $start = 1)
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
        $seqcol_name = $db->quoteIdentifier($db->options['seqcol_name'], true);
        $query = "CREATE TABLE $sequence_name ($seqcol_name " .
                 "INT PRIMARY KEY CLUSTERED IDENTITY($start,1) NOT NULL)";

        $res = $db->exec($query);
        if (PEAR::isError($res)) {
            return $res;
        }

        $query = "SET IDENTITY_INSERT $sequence_name ON ".
                 "INSERT INTO $sequence_name ($seqcol_name) VALUES ($start)";
        $res = $db->exec($query);

        if (!PEAR::isError($res)) {
            return MDB2_OK;
        }

        $result = $db->exec("DROP TABLE $sequence_name");
        if (PEAR::isError($result)) {
            return $db->raiseError($result, null, null,
                'could not drop inconsistent sequence table', __FUNCTION__);
        }

        return $db->raiseError($res, null, null,
            'could not create sequence table', __FUNCTION__);
    }

    // }}}
    // {{{ dropSequence()

    /**
     * This function drops an existing sequence
     *
     * @param string $seq_name name of the sequence to be dropped
     *
     * @return mixed MDB2_OK on success, a MDB2 error on failure
     * @access public
     */
    function dropSequence($seq_name)
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $sequence_name = $db->quoteIdentifier($db->getSequenceName($seq_name), true);
        return $db->exec("DROP TABLE $sequence_name");
    }

    // }}}
    // {{{ listSequences()

    /**
     * list all sequences in the current database
     *
     * @return mixed array of sequence names on success, a MDB2 error on failure
     * @access public
     */
    function listSequences()
    {
        $db =& $this->getDBInstance();
        if (PEAR::isError($db)) {
            return $db;
        }

        $query = "SELECT name FROM sysobjects WHERE xtype = 'U'";
        $table_names = $db->queryCol($query);
        if (PEAR::isError($table_names)) {
            return $table_names;
        }
        $result = array();
        foreach ($table_names as $table_name) {
            if ($sqn = $this->_fixSequenceName($table_name, true)) {
                $result[] = $sqn;
            }
        }
        if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
            $result = array_map(($db->options['field_case'] == CASE_LOWER ?
                          'strtolower' : 'strtoupper'), $result);
        }
        return $result;
    }

    // }}}
}

// }}}
?>