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lib.inc.php3, db_readdump.php3:

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removed expand_sql_query() as no longer needed
This commit is contained in:
Robin Johnson
2001-08-28 01:25:24 +00:00
parent 7161a08252
commit da0ce8fbec
3 changed files with 4 additions and 109 deletions
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104
lib.inc.php3
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@@ -703,110 +703,6 @@ window.parent.frames['nav'].location.replace('<?php echo $reload_url; ?>');
return array($return_value, $unit);
} // end of the 'format_byte_down' function
/* ----- Functions used to display records returned by a sql query ----- */
/**
* Expands table alias in SQL queries
*
* @param string a single sql query
*
* @return string the expanded SQL query
*
* @author Robin Johnson
*
* @version 1.1 - 10th August 2001
*/
function expand_sql_query($sql)
{
$sql = trim($sql);
$arr = explode(' ', $sql);
if (strtoupper($arr[0]) != 'SELECT') {
return $sql;
}
$start_table_ref = FALSE;
$end_table_ref = FALSE;
// Finds which block of text has the table reference data
for ($i = 0; $i < count($arr); $i++) {
$tmp = trim(strtoupper($arr[$i]));
if ($tmp == 'FROM') {
$start_table_ref = $i + 1;
}
else if ($tmp == 'WHERE' || $tmp == 'GROUP' || $tmp == 'HAVING' || $tmp == 'ORDER'
|| $tmp == 'LIMIT' || $tmp == 'PROCEDURE' || $tmp == 'FOR' || $tmp == 'BY'
|| $tmp == 'UPDATE' || $tmp == 'LOCK' || $tmp == 'IN' || $tmp == 'SHARE'
|| $tmp == 'MODE') {
// We want only the first one
if (!$end_table_ref) {
$end_table_ref = $i - 1;
}
}
} // end for
// In case the table reference was the last thing
if (!$end_table_ref) {
$end_table_ref = count($arr) - 1;
}
// Handles the table reference data
// First put it back together
$table_ref_data = '';
for ($i = $start_table_ref; $i <= $end_table_ref; $i++) {
$table_ref_data .= ' ' . $arr[$i];
} // end for
// Cleans out the extra spaces
$table_ref_data = trim($table_ref_data);
// Cleans up a bit
unset($arr);
unset($tmp);
unset($i);
// Breaks it apart into each table used
$arr = explode(',', $table_ref_data);
// Handles each table used
reset($arr);
while (list(, $table) = each ($arr)) {
$table = trim($table);
if (isset($data)) {
unset($data);
}
$data = explode(' ', $table); //will have at most 3 items
if (isset($data_count)) {
unset($data_count);
}
$data_count = count($data);
if (isset($match)) {
unset($match);
}
if ($data_count == 1) {
continue;
}
// Checks with 'as' keyword specified...
if ($data_count == 3) {
$data[1] = $data[2];
$match = $data[0] . ' as ' . $data[1];
}
// ... and now in form "departments d"
if ($data_count >= 2) {
$sql = eregi_replace(
'([^a-zA-Z0-9])' . $data[1] . '\.',
'\1 ' . $data[0] . '.',
$sql);
if (!isset($match)) {
$match = $data[0] . ' ' . $data[1];
}
$sql = str_replace($match, ' ' . $data[0], $sql);
} // end if
} // end while
return $sql;
} // end of the 'expand_sql_query()' function
/**
* Displays a navigation bar to browse among the results of a sql query
*