path: root/src/database/Postgres74.php

<?php

/**
 * PHPPgAdmin v6.0.0-RC5
 */

namespace PHPPgAdmin\Database;

/**
 * @file
 * A class that implements the DB interface for Postgres
 * Note: This class uses ADODB and returns RecordSets.
 *
 * Id: Postgres74.php,v 1.72 2008/02/20 21:06:18 ioguix Exp $
 *
 * @package PHPPgAdmin
 */
class Postgres74 extends Postgres80
{
    public $major_version = 7.4;
    // List of all legal privileges that can be applied to different types
    // of objects.
    public $privlist = [
        'table'    => ['SELECT', 'INSERT', 'UPDATE', 'DELETE', 'RULE', 'REFERENCES', 'TRIGGER', 'ALL PRIVILEGES'],
        'view'     => ['SELECT', 'INSERT', 'UPDATE', 'DELETE', 'RULE', 'REFERENCES', 'TRIGGER', 'ALL PRIVILEGES'],
        'sequence' => ['SELECT', 'UPDATE', 'ALL PRIVILEGES'],
        'database' => ['CREATE', 'TEMPORARY', 'ALL PRIVILEGES'],
        'function' => ['EXECUTE', 'ALL PRIVILEGES'],
        'language' => ['USAGE', 'ALL PRIVILEGES'],
        'schema'   => ['CREATE', 'USAGE', 'ALL PRIVILEGES'],
    ];

    // Database functions

    /**
     * Alters a database
     * the multiple return vals are for postgres 8+ which support more functionality in alter database.
     *
     * @param string $dbName   The name of the database
     * @param string $newName  new name for the database
     * @param string $newOwner The new owner for the database
     * @param string $comment
     *
     * @return bool|int 0 success
     */
    public function alterDatabase($dbName, $newName, $newOwner = '', $comment = '')
    {
        //ignore $newowner, not supported pre 8.0
        //ignore $comment, not supported pre 8.2
        $this->clean($dbName);
        $this->clean($newName);

        $status = $this->alterDatabaseRename($dbName, $newName);
        if ($status != 0) {
            return -3;
        }

        return 0;
    }

    /**
     * Return all database available on the server.
     *
     * @param null|string $currentdatabase
     *
     * @return \PHPPgAdmin\ADORecordSet A list of databases, sorted alphabetically
     */
    public function getDatabases($currentdatabase = null)
    {
        $conf        = $this->conf;
        $server_info = $this->server_info;

        if (isset($conf['owned_only']) && $conf['owned_only'] && !$this->isSuperUser()) {
            $username = $server_info['username'];
            $this->clean($username);
            $clause = " AND pu.usename='{$username}'";
        } else {
            $clause = '';
        }

        if ($currentdatabase) {
            $this->clean($currentdatabase);
            $orderby = "ORDER BY pdb.datname = '{$currentdatabase}' DESC, pdb.datname";
        } else {
            $orderby = 'ORDER BY pdb.datname';
        }

        if (!$conf['show_system']) {
            $where = ' AND NOT pdb.datistemplate';
        } else {
            $where = ' AND pdb.datallowconn';
        }

        $sql = "SELECT pdb.datname AS datname,
                pu.usename AS datowner,
                pg_encoding_to_char(encoding) AS datencoding,
                (SELECT description FROM pg_description pd WHERE pdb.oid=pd.objoid) AS datcomment
                FROM pg_database pdb, pg_user pu
    			WHERE pdb.datdba = pu.usesysid
    			{$where}
    			{$clause}
    			{$orderby}";

        return $this->selectSet($sql);
    }

    /**
     * Searches all system catalogs to find objects that match a certain name.
     *
     * @param string $term   The search term
     * @param string $filter The object type to restrict to ('' means no restriction)
     *
     * @return \PHPPgAdmin\ADORecordSet A recordset
     */
    public function findObject($term, $filter)
    {
        $conf = $this->conf;

        /**
         * About escaping:
         * SET standard_conforming_string is not available before 8.2
         * So we must use PostgreSQL specific notation :/
         * E'' notation is not available before 8.1
         * $$ is available since 8.0
         * Nothing specific from 7.4.
         */

        // Escape search term for ILIKE match
        $term = str_replace('_', '\\_', $term);
        $term = str_replace('%', '\\%', $term);
        $this->clean($term);
        $this->clean($filter);

        // Exclude system relations if necessary
        if (!$conf['show_system']) {
            // XXX: The mention of information_schema here is in the wrong place, but
            // it's the quickest fix to exclude the info schema from 7.4
            $where     = " AND pn.nspname NOT LIKE 'pg\\\\_%' AND pn.nspname != 'information_schema'";
            $lan_where = 'AND pl.lanispl';
        } else {
            $where     = '';
            $lan_where = '';
        }

        // Apply outer filter
        $sql = '';
        if ($filter != '') {
            $sql = 'SELECT * FROM (';
        }

        $sql .= "
			SELECT 'SCHEMA' AS type, oid, NULL AS schemaname, NULL AS relname, nspname AS name
				FROM pg_catalog.pg_namespace pn WHERE nspname ILIKE '%{$term}%' {$where}
			UNION ALL
			SELECT CASE WHEN relkind='r' THEN 'TABLE' WHEN relkind='v' THEN 'VIEW' WHEN relkind='S' THEN 'SEQUENCE' END, pc.oid,
				pn.nspname, NULL, pc.relname FROM pg_catalog.pg_class pc, pg_catalog.pg_namespace pn
				WHERE pc.relnamespace=pn.oid AND relkind IN ('r', 'v', 'S') AND relname ILIKE '%{$term}%' {$where}
			UNION ALL
			SELECT CASE WHEN pc.relkind='r' THEN 'COLUMNTABLE' ELSE 'COLUMNVIEW' END, NULL, pn.nspname, pc.relname, pa.attname FROM pg_catalog.pg_class pc, pg_catalog.pg_namespace pn,
				pg_catalog.pg_attribute pa WHERE pc.relnamespace=pn.oid AND pc.oid=pa.attrelid
				AND pa.attname ILIKE '%{$term}%' AND pa.attnum > 0 AND NOT pa.attisdropped AND pc.relkind IN ('r', 'v') {$where}
			UNION ALL
			SELECT 'FUNCTION', pp.oid, pn.nspname, NULL, pp.proname || '(' || pg_catalog.oidvectortypes(pp.proargtypes) || ')' FROM pg_catalog.pg_proc pp, pg_catalog.pg_namespace pn
				WHERE pp.pronamespace=pn.oid AND NOT pp.proisagg AND pp.proname ILIKE '%{$term}%' {$where}
			UNION ALL
			SELECT 'INDEX', NULL, pn.nspname, pc.relname, pc2.relname FROM pg_catalog.pg_class pc, pg_catalog.pg_namespace pn,
				pg_catalog.pg_index pi, pg_catalog.pg_class pc2 WHERE pc.relnamespace=pn.oid AND pc.oid=pi.indrelid
				AND pi.indexrelid=pc2.oid
				AND NOT EXISTS (
					SELECT 1 FROM pg_catalog.pg_depend d JOIN pg_catalog.pg_constraint c
					ON (d.refclassid = c.tableoid AND d.refobjid = c.oid)
					WHERE d.classid = pc2.tableoid AND d.objid = pc2.oid AND d.deptype = 'i' AND c.contype IN ('u', 'p')
				)
				AND pc2.relname ILIKE '%{$term}%' {$where}
			UNION ALL
			SELECT 'CONSTRAINTTABLE', NULL, pn.nspname, pc.relname, pc2.conname FROM pg_catalog.pg_class pc, pg_catalog.pg_namespace pn,
				pg_catalog.pg_constraint pc2 WHERE pc.relnamespace=pn.oid AND pc.oid=pc2.conrelid AND pc2.conrelid != 0
				AND CASE WHEN pc2.contype IN ('f', 'c') THEN TRUE ELSE NOT EXISTS (
					SELECT 1 FROM pg_catalog.pg_depend d JOIN pg_catalog.pg_constraint c
					ON (d.refclassid = c.tableoid AND d.refobjid = c.oid)
					WHERE d.classid = pc2.tableoid AND d.objid = pc2.oid AND d.deptype = 'i' AND c.contype IN ('u', 'p')
				) END
				AND pc2.conname ILIKE '%{$term}%' {$where}
			UNION ALL
			SELECT 'CONSTRAINTDOMAIN', pt.oid, pn.nspname, pt.typname, pc.conname FROM pg_catalog.pg_type pt, pg_catalog.pg_namespace pn,
				pg_catalog.pg_constraint pc WHERE pt.typnamespace=pn.oid AND pt.oid=pc.contypid AND pc.contypid != 0
				AND pc.conname ILIKE '%{$term}%' {$where}
			UNION ALL
			SELECT 'TRIGGER', NULL, pn.nspname, pc.relname, pt.tgname FROM pg_catalog.pg_class pc, pg_catalog.pg_namespace pn,
				pg_catalog.pg_trigger pt WHERE pc.relnamespace=pn.oid AND pc.oid=pt.tgrelid
					AND ( pt.tgisconstraint = 'f' OR NOT EXISTS
					(SELECT 1 FROM pg_catalog.pg_depend d JOIN pg_catalog.pg_constraint c
					ON (d.refclassid = c.tableoid AND d.refobjid = c.oid)
					WHERE d.classid = pt.tableoid AND d.objid = pt.oid AND d.deptype = 'i' AND c.contype = 'f'))
				AND pt.tgname ILIKE '%{$term}%' {$where}
			UNION ALL
			SELECT 'RULETABLE', NULL, pn.nspname AS schemaname, c.relname AS tablename, r.rulename FROM pg_catalog.pg_rewrite r
				JOIN pg_catalog.pg_class c ON c.oid = r.ev_class
				LEFT JOIN pg_catalog.pg_namespace pn ON pn.oid = c.relnamespace
				WHERE c.relkind='r' AND r.rulename != '_RETURN' AND r.rulename ILIKE '%{$term}%' {$where}
			UNION ALL
			SELECT 'RULEVIEW', NULL, pn.nspname AS schemaname, c.relname AS tablename, r.rulename FROM pg_catalog.pg_rewrite r
				JOIN pg_catalog.pg_class c ON c.oid = r.ev_class
				LEFT JOIN pg_catalog.pg_namespace pn ON pn.oid = c.relnamespace
				WHERE c.relkind='v' AND r.rulename != '_RETURN' AND r.rulename ILIKE '%{$term}%' {$where}
		";

        // Add advanced objects if show_advanced is set
        if ($conf['show_advanced']) {
            $sql .= "
				UNION ALL
				SELECT CASE WHEN pt.typtype='d' THEN 'DOMAIN' ELSE 'TYPE' END, pt.oid, pn.nspname, NULL,
					pt.typname FROM pg_catalog.pg_type pt, pg_catalog.pg_namespace pn
					WHERE pt.typnamespace=pn.oid AND typname ILIKE '%{$term}%'
					AND (pt.typrelid = 0 OR (SELECT c.relkind = 'c' FROM pg_catalog.pg_class c WHERE c.oid = pt.typrelid))
					{$where}
				UNION ALL
				SELECT 'OPERATOR', po.oid, pn.nspname, NULL, po.oprname FROM pg_catalog.pg_operator po, pg_catalog.pg_namespace pn
					WHERE po.oprnamespace=pn.oid AND oprname ILIKE '%{$term}%' {$where}
				UNION ALL
				SELECT 'CONVERSION', pc.oid, pn.nspname, NULL, pc.conname FROM pg_catalog.pg_conversion pc,
					pg_catalog.pg_namespace pn WHERE pc.connamespace=pn.oid AND conname ILIKE '%{$term}%' {$where}
				UNION ALL
				SELECT 'LANGUAGE', pl.oid, NULL, NULL, pl.lanname FROM pg_catalog.pg_language pl
					WHERE lanname ILIKE '%{$term}%' {$lan_where}
				UNION ALL
				SELECT DISTINCT ON (p.proname) 'AGGREGATE', p.oid, pn.nspname, NULL, p.proname FROM pg_catalog.pg_proc p
					LEFT JOIN pg_catalog.pg_namespace pn ON p.pronamespace=pn.oid
					WHERE p.proisagg AND p.proname ILIKE '%{$term}%' {$where}
				UNION ALL
				SELECT DISTINCT ON (po.opcname) 'OPCLASS', po.oid, pn.nspname, NULL, po.opcname FROM pg_catalog.pg_opclass po,
					pg_catalog.pg_namespace pn WHERE po.opcnamespace=pn.oid
					AND po.opcname ILIKE '%{$term}%' {$where}
			";
        } else {
            // Otherwise just add domains
            $sql .= "
				UNION ALL
				SELECT 'DOMAIN', pt.oid, pn.nspname, NULL,
					pt.typname FROM pg_catalog.pg_type pt, pg_catalog.pg_namespace pn
					WHERE pt.typnamespace=pn.oid AND pt.typtype='d' AND typname ILIKE '%{$term}%'
					AND (pt.typrelid = 0 OR (SELECT c.relkind = 'c' FROM pg_catalog.pg_class c WHERE c.oid = pt.typrelid))
					{$where}
			";
        }

        if ($filter != '') {
            // We use like to make RULE, CONSTRAINT and COLUMN searches work
            $sql .= ") AS sub WHERE type LIKE '{$filter}%' ";
        }

        $sql .= 'ORDER BY type, schemaname, relname, name';

        return $this->selectSet($sql);
    }

    /**
     * Returns table locks information in the current database.
     *
     * @return \PHPPgAdmin\ADORecordSet A recordset
     */
    public function getLocks()
    {
        $conf = $this->conf;

        if (!$conf['show_system']) {
            $where = "AND pn.nspname NOT LIKE 'pg\\\\_%'";
        } else {
            $where = "AND nspname !~ '^pg_t(emp_[0-9]+|oast)$'";
        }

        $sql = "SELECT pn.nspname, pc.relname AS tablename, pl.transaction, pl.pid, pl.mode, pl.granted
		FROM pg_catalog.pg_locks pl, pg_catalog.pg_class pc, pg_catalog.pg_namespace pn
		WHERE pl.relation = pc.oid AND pc.relnamespace=pn.oid {$where}
		ORDER BY nspname,tablename";

        return $this->selectSet($sql);
    }

    /**
     * Returns the current database encoding.
     *
     * @return int|string The encoding.  eg. SQL_ASCII, UTF-8, etc.
     */
    public function getDatabaseEncoding()
    {
        $sql = 'SELECT getdatabaseencoding() AS encoding';

        return $this->selectField($sql, 'encoding');
    }

    // Table functions

    /**
     * Alters a column in a table OR view.
     *
     * @param string $table      The table in which the column resides
     * @param string $column     The column to alter
     * @param string $name       The new name for the column
     * @param bool   $notnull    (boolean) True if not null, false otherwise
     * @param bool   $oldnotnull (boolean) True if column is already not null, false otherwise
     * @param string $default    The new default for the column
     * @param string $olddefault The old default for the column
     * @param string $type       The new type for the column
     * @param int    $length     The optional size of the column (ie. 30 for varchar(30))
     * @param bool   $array      True if array type, false otherwise
     * @param string $oldtype    The old type for the column
     * @param string $comment    Comment for the column
     *
     * @return array|bool|int 0 success
     */
    public function alterColumn(
        $table,
        $column,
        $name,
        $notnull,
        $oldnotnull,
        $default,
        $olddefault,
        $type,
        $length,
        $array,
        $oldtype,
        $comment
    ) {
        $sql    = '';
        $status = $this->beginTransaction();
        if ($status != 0) {
            return -1;
        }

        // @@ NEED TO HANDLE "NESTED" TRANSACTION HERE
        if ($notnull != $oldnotnull) {
            $status = $this->setColumnNull($table, $column, !$notnull);
            if ($status != 0) {
                $this->rollbackTransaction();

                return -2;
            }
        }

        // Set default, if it has changed
        if ($default != $olddefault) {
            if ($default == '') {
                $status = $this->dropColumnDefault($table, $column);
            } else {
                $status = $this->setColumnDefault($table, $column, $default);
            }

            if ($status != 0) {
                $this->rollbackTransaction();

                return -3;
            }
        }

        // Rename the column, if it has been changed
        if ($column != $name) {
            list($status, $sql) = $this->renameColumn($table, $column, $name);
            if ($status != 0) {
                $this->rollbackTransaction();

                return -4;
            }
        }

        // The $name and $table parameters must be cleaned for the setComment function.
        // It's ok to do that here since this is the last time these variables are used.
        $this->fieldClean($name);
        $this->fieldClean($table);
        $status = $this->setComment('COLUMN', $name, $table, $comment);
        if ($status != 0) {
            $this->rollbackTransaction();

            return -5;
        }

        return [$this->endTransaction(), $sql];
    }

    /**
     * Returns table information.
     *
     * @param string $table The name of the table
     *
     * @return \PHPPgAdmin\ADORecordSet A recordset
     */
    public function getTable($table)
    {
        $c_schema = $this->_schema;
        $this->clean($c_schema);
        $this->clean($table);

        $sql = "
			SELECT
			  c.relname, n.nspname, u.usename AS relowner,
			  pg_catalog.obj_description(c.oid, 'pg_class') AS relcomment
			FROM pg_catalog.pg_class c
			     LEFT JOIN pg_catalog.pg_user u ON u.usesysid = c.relowner
			     LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
			WHERE c.relkind = 'r'
				AND n.nspname = '{$c_schema}'
			    AND c.relname = '{$table}'";

        return $this->selectSet($sql);
    }

    /**
     * Returns the current default_with_oids setting.
     *
     * @return string default_with_oids setting
     */
    public function getDefaultWithOid()
    {
        // 8.0 is the first release to have this setting
        // Prior releases don't have this setting... oids always activated
        return 'on';
    }

    /**
     * Returns a list of all constraints on a table,
     * including constraint name, definition, related col and referenced namespace,
     * table and col if needed.
     *
     * @param string $table the table where we are looking for fk
     *
     * @return \PHPPgAdmin\ADORecordSet A recordset
     */
    public function getConstraintsWithFields($table)
    {
        $c_schema = $this->_schema;
        $this->clean($c_schema);
        $this->clean($table);

        // get the max number of col used in a constraint for the table
        $sql = "SELECT DISTINCT
			max(SUBSTRING(array_dims(c.conkey) FROM '^\\\\[.*:(.*)\\\\]$')) as nb
		FROM pg_catalog.pg_constraint AS c
			JOIN pg_catalog.pg_class AS r ON (c.conrelid=r.oid)
		    JOIN pg_catalog.pg_namespace AS ns ON (r.relnamespace=ns.oid)
		WHERE
			r.relname = '{$table}' AND ns.nspname='{$c_schema}'";

        $rs = $this->selectSet($sql);

        if ($rs->EOF) {
            $max_col = 0;
        } else {
            $max_col = $rs->fields['nb'];
        }

        $sql = '
			SELECT
				c.oid AS conid, c.contype, c.conname, pg_catalog.pg_get_constraintdef(c.oid, true) AS consrc,
				ns1.nspname as p_schema, r1.relname as p_table, ns2.nspname as f_schema,
				r2.relname as f_table, f1.attname as p_field, f1.attnum AS p_attnum, f2.attname as f_field,
				f2.attnum AS f_attnum, pg_catalog.obj_description(c.oid, \'pg_constraint\') AS constcomment,
				c.conrelid, c.confrelid
			FROM
				pg_catalog.pg_constraint AS c
				JOIN pg_catalog.pg_class AS r1 ON (c.conrelid=r1.oid)
				JOIN pg_catalog.pg_attribute AS f1 ON (f1.attrelid=r1.oid AND (f1.attnum=c.conkey[1]';
        for ($i = 2; $i <= $rs->fields['nb']; ++$i) {
            $sql .= " OR f1.attnum=c.conkey[${i}]";
        }
        $sql .= '))
				JOIN pg_catalog.pg_namespace AS ns1 ON r1.relnamespace=ns1.oid
				LEFT JOIN (
					pg_catalog.pg_class AS r2 JOIN pg_catalog.pg_namespace AS ns2 ON (r2.relnamespace=ns2.oid)
				) ON (c.confrelid=r2.oid)
				LEFT JOIN pg_catalog.pg_attribute AS f2 ON
					(f2.attrelid=r2.oid AND ((c.confkey[1]=f2.attnum AND c.conkey[1]=f1.attnum)';
        for ($i = 2; $i <= $rs->fields['nb']; ++$i) {
            $sql .= " OR (c.confkey[${i}]=f2.attnum AND c.conkey[${i}]=f1.attnum)";
        }

        $sql .= sprintf("))
			WHERE
				r1.relname = '%s' AND ns1.nspname='%s'
			ORDER BY 1", $table, $c_schema);

        return $this->selectSet($sql);
    }

    // Constraint functions

    /**
     * Returns all sequences in the current database.
     *
     * @param bool $all
     *
     * @return \PHPPgAdmin\ADORecordSet A recordset
     */
    public function getSequences($all = false)
    {
        $c_schema = $this->_schema;
        $this->clean($c_schema);
        if ($all) {
            // Exclude pg_catalog and information_schema tables
            $sql = "SELECT n.nspname, c.relname AS seqname, u.usename AS seqowner
				FROM pg_catalog.pg_class c, pg_catalog.pg_user u, pg_catalog.pg_namespace n
				WHERE c.relowner=u.usesysid AND c.relnamespace=n.oid
				AND c.relkind = 'S'
				AND n.nspname NOT IN ('pg_catalog', 'information_schema', 'pg_toast')
				ORDER BY nspname, seqname";
        } else {
            $sql = "SELECT c.relname AS seqname, u.usename AS seqowner, pg_catalog.obj_description(c.oid, 'pg_class') AS seqcomment
				FROM pg_catalog.pg_class c, pg_catalog.pg_user u, pg_catalog.pg_namespace n
				WHERE c.relowner=u.usesysid AND c.relnamespace=n.oid
				AND c.relkind = 'S' AND n.nspname='{$c_schema}' ORDER BY seqname";
        }

        return $this->selectSet($sql);
    }

    // Sequence functions

    /**
     * Returns all details for a particular function.
     *
     * @param int $function_oid function identifier
     *
     * @return \PHPPgAdmin\ADORecordSet Function info
     *
     * @internal param string The $func name of the function to retrieve
     */
    public function getFunction($function_oid)
    {
        $this->clean($function_oid);

        $sql = "
		SELECT
			pc.oid AS prooid,
			proname,
			pg_catalog.pg_get_userbyid(proowner) AS proowner,
			nspname as proschema,
			lanname as prolanguage,
			pg_catalog.format_type(prorettype, NULL) as proresult,
			prosrc,
			probin,
			proretset,
			proisstrict,
			provolatile,
			prosecdef,
			pg_catalog.oidvectortypes(pc.proargtypes) AS proarguments,
			pg_catalog.obj_description(pc.oid, 'pg_proc') AS procomment
		FROM
			pg_catalog.pg_proc pc, pg_catalog.pg_language pl, pg_catalog.pg_namespace n
		WHERE
			pc.oid = '${function_oid}'::oid
			AND pc.prolang = pl.oid
			AND n.oid = pc.pronamespace
		";

        return $this->selectSet($sql);
    }

    // Function functions

    /**
     * Returns a list of all casts in the database.
     *
     * @return \PHPPgAdmin\ADORecordSet All casts
     */
    public function getCasts()
    {
        $conf = $this->conf;

        if ($conf['show_system']) {
            $where = '';
        } else {
            $where = "
				AND n1.nspname NOT LIKE 'pg\\\\_%'
				AND n2.nspname NOT LIKE 'pg\\\\_%'
				AND n3.nspname NOT LIKE 'pg\\\\_%'
			";
        }

        $sql = "
			SELECT
				c.castsource::pg_catalog.regtype AS castsource,
				c.casttarget::pg_catalog.regtype AS casttarget,
				CASE WHEN c.castfunc=0 THEN NULL
				ELSE c.castfunc::pg_catalog.regprocedure END AS castfunc,
				c.castcontext,
				obj_description(c.oid, 'pg_cast') as castcomment
			FROM
				(pg_catalog.pg_cast c LEFT JOIN pg_catalog.pg_proc p ON c.castfunc=p.oid JOIN pg_catalog.pg_namespace n3 ON p.pronamespace=n3.oid),
				pg_catalog.pg_type t1,
				pg_catalog.pg_type t2,
				pg_catalog.pg_namespace n1,
				pg_catalog.pg_namespace n2
			WHERE
				c.castsource=t1.oid
				AND c.casttarget=t2.oid
				AND t1.typnamespace=n1.oid
				AND t2.typnamespace=n2.oid
				{$where}
			ORDER BY 1, 2
		";

        return $this->selectSet($sql);
    }

    public function hasAlterColumnType()
    {
        return false;
    }

    // Capabilities

    public function hasCreateFieldWithConstraints()
    {
        return false;
    }

    public function hasAlterDatabaseOwner()
    {
        return false;
    }

    public function hasAlterSchemaOwner()
    {
        return false;
    }

    public function hasFunctionAlterOwner()
    {
        return false;
    }

    public function hasNamedParams()
    {
        return false;
    }

    public function hasQueryCancel()
    {
        return false;
    }

    public function hasTablespaces()
    {
        return false;
    }

    public function hasMagicTypes()
    {
        return false;
    }

    /**
     * Protected method which alter a table
     * SHOULDN'T BE CALLED OUTSIDE OF A TRANSACTION.
     *
     * @param \PHPPgAdmin\ADORecordSet $tblrs      The table recordSet returned by getTable()
     * @param string                   $name       The new name for the table
     * @param string                   $owner      The new owner for the table
     * @param string                   $schema     The new schema for the table
     * @param string                   $comment    The comment on the table
     * @param string                   $tablespace The new tablespace for the table ('' means leave as is)
     *
     * @return int 0 success
     */
    protected function _alterTable($tblrs, $name, $owner, $schema, $comment, $tablespace)
    {
        /* $schema and tablespace not supported in pg74- */
        $this->fieldArrayClean($tblrs->fields);

        // Comment
        $status = $this->setComment('TABLE', '', $tblrs->fields['relname'], $comment);
        if ($status != 0) {
            return -4;
        }

        // Owner
        $this->fieldClean($owner);
        $status = $this->alterTableOwner($tblrs, $owner);
        if ($status != 0) {
            return -5;
        }

        // Rename
        $this->fieldClean($name);
        $status = $this->alterTableName($tblrs, $name);
        if ($status != 0) {
            return -3;
        }

        return 0;
    }
}