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";
// First we need the really needed Tables - those in TableList might
// still be all Tables.
if (isset($Field) && count($Field) > 0) {
// Initialize some variables
$tab_all = array();
$col_all = array();
$tab_know = array();
$tab_left = array();
$col_where = array();
$fromclause = '';
// we only start this if we have fields, otherwise it would be dumb
//echo "get everything\n";
while (list(, $value) = each($Field)) {
$_parts = explode('.', $value);
if (!empty($_parts[0]) && !empty($_parts[1])) {
$_tab_raw = urldecode($_parts[0]);
$_tab = str_replace('`', '', $_tab_raw);
//echo "new Tab: " . $_tab . "\n";
$tab_all[$_tab] = $_tab;
$_col_raw = urldecode($_parts[1]);
$col_all[] = $_tab . '.' . str_replace('`', '', $_col_raw);
//echo "new col:" . $_tab . '.' . str_replace('`', '', $_col_raw) . "\n";
}
} // end while
//echo "check whereclauses\n";
if ($cfgRelation['relwork'] && count($tab_all) > 0) {
// now we need all tables that we have in the whereclause
for ($x = 0; $x < count($Criteria); $x++) {
$_tab_wher = explode('.', urldecode($Field[$x]));
if(!empty($_tab_wher[0]) && !empty($_tab_wher[1])) {
$_tab_raw = urldecode($_tab_wher[0]);
$_tab = str_replace('`', '', $_tab_raw);
$_col_raw = urldecode($_tab_wher[1]);
$_col = str_replace('`', '', $_col_raw);
$_col = $_tab . '.' . $_col;
// now we know that our array has the same numbers as $Criteria
// we can check which of our columns has a whereclause
if (!empty($Criteria[$x])) {
if (substr($Criteria[$x],0,1) == '=' || eregi('is',$Criteria[$x])) {
$col_where[$_col] = $_col;
$tab_where[$_tab] = $_tab;
// echo "new Whereclause:".$_tab."\n";
}
}
}
} // end for
// clean temp vars w/o further use
unset($_tab_raw,$_col_raw);
if (count($tab_where) == 1) {
// if there is exactly one column that has a decent where-clause
// we will just use this
$master = key($tab_where);
// echo "nur ein where: master =".$master . "\n";
} else {
// now let's find out which of the tables has an index
// echo "prüfe indexe:\n";
while (list(, $_tab) = each($tab_all)) {
$ind_qry = 'SHOW INDEX FROM ' . PMA_backquote($_tab);
$ind_rs = PMA_mysql_query($ind_qry);
while ($ind = PMA_mysql_fetch_array($ind_rs)) {
$_col = $_tab . '.' . $ind['Column_name'];
if (isset($col_all[$_col])) {
if ($ind['non_unique'] == 0) {
if (isset($col_where[$_col])) {
$col_unique[$_col] = 'Y';
} else {
$col_unique[$_col] = 'N';
}
//echo "neuen unique index gefunden:".$_col."\n";
} else {
if (isset($col_where[$_col])) {
$col_index[$_col] = 'Y';
} else {
$col_index[$_col] = 'N';
}
//echo "neuen index gefunden:".$_col."\n";
}
}
} // End while (each col of tab)
} // End while (each tab)
// now we want to find the best.
if (isset($col_unique) && count($col_unique)>0) {
$col_cand = $col_unique;
// echo "Kandidaten sind jetzt alle mit unique index\n";
$_needsort= 1;
} elseif (isset($col_index) && count($col_index) > 0) {
$col_cand = $col_index;
$_needsort= 1;
// echo "Kandidaten sind jetzt alle mit index\n";
} elseif (isset($col_where) && count($col_where) > 0) {
$col_cand = $tab_where;
// echo "Kandidaten sind jetzt alle im whereclause\n";
$_needsort= 0;
} else {
$col_cand = $tab_all;
$_needsort= 0;
// echo "Kandidaten sind jetzt alle \n";
}
// if we came up with $col_unique (very good) or
// $col_index (still good) as $col_cand we want to check
// if we have any 'Y' there (that would mean that
// they were also found in the whereclauses which would be
// great). if yes, we take only those
if ($_needsort == 1) {
while (list($_col,$_iswhere) = each($col_cand)) {
$_tab = explode('.',$_col);
$_tab = $_tab[0];
if ($_iswhere == 'Y') {
$_vg[$_col] = $_tab;
} else {
$_sg[$_col] = $_tab;
}
}
if (isset($vg)) {
$col_cand = $vg;
// echo "Kandidaten konnten auf index+where beschränkt werden\n";
} else {
$col_cand = $sg;
// echo "keiner der Kandidaten mit Index ist im wherclause\n";
}
}
// if our array of candidates has more than one member
// we'll just find the smallest table.
// of course the actual query would be faster if we check
// for the Criteria which gives the smallest resultset
// in its table, but it would take too much time to check this
if (count($col_cand)>1) {
//echo "wir haben immer noch mehr als einen Kandidaten. Prüfe Größe\n";
// of course we only want to check each table once
$_checked_tables = $col_cand;
while (list(, $_tab) = each($col_cand)) {
if ($_checked_tables[$_tab] != 1 ) {
//echo "prüfe jetzt: Tabelle ".$_tab. "\n";
$rows_qry = 'SELECT count(1) as anz '
. 'FROM ' . PMA_backquote($_tab);
$rows_rs = PMA_mysql_query($rows_qry);
while ($res = PMA_mysql_fetch_array($rows_rs)) {
$_tsize[$_tab] = $res['anz'];
//echo "$_tab hat:" .$_tsize[$_tab]."\n";
}
$_checked_tables[$_tab] =1;
}
$_csize[$_tab] = $_tsize[$_tab];
//echo "erster csize: ".$_csize[$_tab]."\n";
}
asort($_csize);
reset($_csize);
$master = key($_csize);
//echo "kleinste Datei: " . $master . "\n";
} else {
$master = $col_cand[0];
//echo "master ist der einzige Kandidat: " . $master . "\n";
}
} // end if (exactly one where clause)
//echo "ich habe mich entschieden: " . $master;
//die;
// i will need something to remove unwanted entries from
// arrays which works with php3
function array_short($array,$key)
{
while (list($k, $v) = each($array)) {
if ($k != $key) {
$reta[$k] = $v;
}
}
if(!isset($reta)){
$reta = array();
}
return $reta;
}
// now we will often need a function to find all
// related tables. what we will have is an array
// of allready connected tables $tab_know and one
// of tables that we still couldn't connect $tab_left
// all we start with is $tab_all and the knowledge of
// our $master
// as we need to work with php3 we cannot give the variables
// by & so i need to make them global ;-(
// the only thing we give is wether to go from
// master to foreign or vice versa
function getrelatives($from) {
global $tab_left,$tab_know,$fromclause,$db,$cfgRelation,$dbh;
if ($from == 'master') {
$to = 'foreign';
} else {
$to = 'master';
}
$in_know = '(\'' . implode('\', \'', $tab_know) . '\')';
$in_left = '(\'' . implode('\', \'', $tab_left) . '\')';
$rel_query = 'SELECT *'
. ' FROM ' . PMA_backquote($cfgRelation['relation'])
. ' WHERE ' . $from . '_db = \'' . $db . '\''
. ' AND ' . $to . '_db = \'' . $db . '\''
. ' AND ' . $from . '_table IN ' . $in_know
. ' AND ' . $to . '_table IN ' . $in_left;
if (isset($dbh)) {
PMA_mysql_select_db($cfgRelation['db'], $dbh);
$relations = @PMA_mysql_query($rel_query, $dbh) or PMA_mysqlDie(PMA_mysql_error($dbh), $rel_query, '', $err_url_0);
PMA_mysql_select_db($db, $dbh);
} else {
PMA_mysql_select_db($cfgRelation['db']);
$relations = @PMA_mysql_query($rel_query) or PMA_mysqlDie('', $rel_query, '', $err_url_0);
PMA_mysql_select_db($db);
}
while ($row = PMA_mysql_fetch_array($relations)) {
$found_table = $row[$to.'_table'];
if (isset($tab_left[$found_table])) {
$fromclause .= "\n LEFT JOIN "
. PMA_backquote($row[$to . '_table']) . ' ON '
. PMA_backquote($row[$from. '_table']) . '.'
. PMA_backquote($row[$from. '_field']) . ' = '
. PMA_backquote($row[$to . '_table']) . '.'
. PMA_backquote($row[$to . '_field']) .' ';
$tab_know[$found_table] = $found_table;
$tab_left = array_short($tab_left,$found_table);
}
} // end while
} // End of Function
$tab_left = array_short($tab_all,$master);
$tab_know[$master] = $master;
$run=0;$emerg='';
while (count($tab_left)>0) {
if ($run % 2 ==0) {
getrelatives('master');
} else {
getrelatives('foreign');
}
$run++;
if ($run>5) {
while ( list(,$_tab) = each($tab_left)) {
$emerg .= ', '.$_tab;
$tab_left=array_short($tab_left,$_tab);
}
}
}
$qry_from = $master . $emerg . $fromclause;
}
} // end count($Field) > 0
// now let's see what we got
if (!empty($qry_from)) {
$encoded_qry .= urlencode('FROM ' . $qry_from . "\n");
echo 'FROM ' . htmlspecialchars($qry_from) . "\n";
}
// 3. WHERE
$qry_where = '';
$criteria_cnt = 0;
for ($x = 0; $x < $col; $x++) {
if (!empty($curField[$x]) && !empty($curCriteria[$x]) && $x && isset($last_where)) {
$qry_where .= ' ' . strtoupper($curAndOrCol[$last_where]) . ' ';
}
if (!empty($curField[$x]) && !empty($curCriteria[$x])) {
$qry_where .= '(' . $curField[$x] . ' ' . $curCriteria[$x] . ')';
$last_where = $x;
$criteria_cnt++;
}
} // end for
if ($criteria_cnt > 1) {
$qry_where = '(' . $qry_where . ')';
}
// OR rows ${"cur".$or}[$x]
if (!isset($curAndOrRow)) {
$curAndOrRow = array();
}
for ($y = 0; $y <= $row; $y++) {
$criteria_cnt = 0;
$qry_orwhere = '';
$last_orwhere = '';
for ($x = 0; $x < $col; $x++) {
if (!empty($curField[$x]) && !empty(${'curOr' . $y}[$x]) && $x) {
$qry_orwhere .= ' ' . strtoupper($curAndOrCol[$last_orwhere]) . ' ';
}
if (!empty($curField[$x]) && !empty(${'curOr' . $y}[$x])) {
$qry_orwhere .= '(' . $curField[$x]
. ' '
. (get_magic_quotes_gpc() ? stripslashes(${'curOr' . $y}[$x]) : ${'curOr' . $y}[$x])
. ')';
$last_orwhere = $x;
$criteria_cnt++;
}
} // end for
if ($criteria_cnt > 1) {
$qry_orwhere = '(' . $qry_orwhere . ')';
}
if (!empty($qry_orwhere)) {
$qry_where .= "\n"
. strtoupper(isset($curAndOrRow[$y]) ? $curAndOrRow[$y] . ' ' : '')
. $qry_orwhere;
} // end if
} // end for
if (!empty($qry_where) && $qry_where != '()') {
$encoded_qry .= urlencode('WHERE ' . $qry_where . "\n");
echo 'WHERE ' . htmlspecialchars($qry_where) . "\n";
} // end if
// 4. ORDER BY
$last_orderby = 0;
if (!isset($qry_orderby)) {
$qry_orderby = '';
}
for ($x = 0; $x < $col; $x++) {
if ($last_orderby && $x && !empty($curField[$x]) && !empty($curSort[$x])) {
$qry_orderby .= ', ';
}
if (!empty($curField[$x]) && !empty($curSort[$x])) {
// if they have chosen all fields using the * selector,
// then sorting is not available
// Robbat2 - Fix for Bug #570698
if (substr($curField[$x], -2) != '.*') {
$qry_orderby .= $curField[$x] . ' ' . $curSort[$x];
$last_orderby = 1;
}
}
} // end for
if (!empty($qry_orderby)) {
$encoded_qry .= urlencode('ORDER BY ' . $qry_orderby);
echo 'ORDER BY ' . htmlspecialchars($qry_orderby) . "\n";
}
?>
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