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db tools can now drop tables

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git-svn-id: file:///svn/phpbb/trunk@8320 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
David M 2008-01-11 06:17:46 +00:00
parent cbb4db46b2
commit 24a359e9f5
2 changed files with 65 additions and 1 deletions
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2
phpBB/includes/acp/acp_database.php
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@ -1805,7 +1805,7 @@ class oracle_extractor extends base_extractor
FROM USER_DEPENDENCIES A, USER_TRIGGERS B FROM USER_DEPENDENCIES A, USER_TRIGGERS B
WHERE A.REFERENCED_TYPE = 'SEQUENCE' WHERE A.REFERENCED_TYPE = 'SEQUENCE'
AND A.NAME = B.TRIGGER_NAME AND A.NAME = B.TRIGGER_NAME
AND B. TABLE_NAME = '{$table_name}'"; AND B.TABLE_NAME = '{$table_name}'";
$result = $db->sql_query($sql); $result = $db->sql_query($sql);
while ($row = $db->sql_fetchrow($result)) while ($row = $db->sql_fetchrow($result))
{ {

64
phpBB/includes/db/db_tools.php
View file

@ -1194,6 +1194,70 @@ class phpbb_db_tools
return self::_sql_run_sql($statements); return self::_sql_run_sql($statements);
} }
/**
* Drop Table
*/
public static function sql_table_drop($table_name, $index_name)
{
global $db;
$statements = array();
// the most basic operation, get rid of the table
$statements[] = 'DROP TABLE ' . $table_name;
switch ($db->dbms_type)
{
case 'firebird':
$sql = 'SELECT RDB$GENERATOR_NAME as gen
FROM RDB$GENERATORS
WHERE RDB$SYSTEM_FLAG = 0
AND RDB$GENERATOR_NAME = \'' . strtoupper($table_name) . "_GEN'";
$result = $db->sql_query($sql);
// does a generator exist?
if ($row = $db->sql_fetchrow($result))
{
$statements[] = "DROP GENERATOR {$row['gen']};";
}
$db->sql_freeresult($result);
break;
case 'oracle':
$sql = 'SELECT A.REFERENCED_NAME
FROM USER_DEPENDENCIES A, USER_TRIGGERS B
WHERE A.REFERENCED_TYPE = 'SEQUENCE'
AND A.NAME = B.TRIGGER_NAME
AND B.TABLE_NAME = \'' . strtoupper($table_name) . "'";
$result = $db->sql_query($sql);
// any sequences ref'd to this table's triggers?
while ($row = $db->sql_fetchrow($result))
{
$statements[] = "DROP SEQUENCE {$row['referenced_name']}";
}
$db->sql_freeresult($result);
case 'postgres':
// PGSQL does not "tightly" bind sequences and tables, we must guess...
$sql = "SELECT relname
FROM pg_class
WHERE relkind = 'S'
AND relname = '{$table_name}_seq'";
$result = $db->sql_query($sql);
// We don't even care about storing the results. We already know the answer if we get rows back.
if ($db->sql_fetchrow($result))
{
$statements[] = "DROP SEQUENCE {$table_name}_seq;\n";
}
$db->sql_freeresult($result);
break;
}
return self::_sql_run_sql($statements);
}
/** /**
* Add primary key * Add primary key
*/ */