<?php
include "db.php";

$charSet = "utf8";
$collation = "utf8_general_ci";

$tables = db_query("SHOW TABLES");
while ($row = db_fetch_array($tables)) {
   $tableName = $row[0];
   echo("$tableName\n");

   $columns = db_query("SHOW COLUMNS FROM $tableName");
   while ($row = db_fetch_array($columns)) {
      $columnName = $row['Field'];
      $columnType = $row['Type'];
      if ($columnType == "date") {
         echo("$columnName  $columnType\n");
         echo("UPDATE $tableName SET $columnName = NULL WHERE $columnName < '2001-01-01'\n");
         db_query("UPDATE $tableName SET $columnName = NULL WHERE $columnName < '2001-01-01'");
         echo("UPDATE $tableName SET $columnName = '2024-10-01' WHERE $columnName > '2004-09-30' AND $columnName < '2024-10-02'\n");
         db_query("UPDATE $tableName SET $columnName = '2024-10-01' WHERE $columnName > '2004-09-30' AND $columnName < '2024-10-02'");
      }
      if ($columnType == "datetime") {
         echo("$columnName  $columnType\n");
         echo("UPDATE $tableName SET $columnName = NULL WHERE $columnName < '2001-01-01 00:00:00'\n");
         db_query("UPDATE $tableName SET $columnName = NULL WHERE $columnName < '2001-01-01 00:00:00'");
         echo("UPDATE $tableName SET $columnName = '2020-01-01 00:00:00' WHERE $columnName IS NULL\n");
         db_query("UPDATE $tableName SET $columnName = '2020-01-01 00:00:00' WHERE $columnName IS NULL");
      }
   }
   echo("\n");
}

?>