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- Oracle gives us null instead of '', this is now fixed (thanks APTX)

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- Oracle can now explain queries


git-svn-id: file:///svn/phpbb/trunk@7741 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
David M 2007-06-09 14:58:50 +00:00
parent 16f60f8838
commit f31c53963a
1 changed files with 68 additions and 1 deletions
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69
phpBB/includes/db/oracle.php
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@ -386,12 +386,18 @@ class dbal_oracle extends dbal
$result_row = array();
foreach ($row as $key => $value)
{
// Oracle treats empty strings as null
if (is_null($value))
{
$value = '';
}
// OCI->CLOB?
if (is_object($value))
{
$value = $value->load();
}
$result_row[strtolower($key)] = $value;
}
@ -550,6 +556,67 @@ class dbal_oracle extends dbal
switch ($mode)
{
case 'start':
$html_table = false;
// Grab a plan table, any will do
$sql = "SELECT table_name
FROM USER_TABLES
WHERE table_name LIKE '%PLAN_TABLE%'";
$stmt = ociparse($this->db_connect_id, $sql);
ociexecute($stmt);
$result = array();
if (ocifetchinto($stmt, $result, OCI_ASSOC + OCI_RETURN_NULLS))
{
$table = $result['TABLE_NAME'];
// This is the statement_id that will allow us to track the plan
$statement_id = substr(md5($query), 0, 30);
// Remove any stale plans
$stmt2 = ociparse($this->db_connect_id, "DELETE FROM $table WHERE statement_id='$statement_id'");
ociexecute($stmt2);
ocifreestatement($stmt2);
// Explain the plan
$sql = "EXPLAIN PLAN
SET STATEMENT_ID = '$statement_id'
FOR $query";
$stmt2 = ociparse($this->db_connect_id, $sql);
ociexecute($stmt2);
ocifreestatement($stmt2);
// Get the data from the plan
$sql = "SELECT operation, options, object_name, object_type, cardinality, cost
FROM plan_table
START WITH id = 0 AND statement_id = '$statement_id'
CONNECT BY PRIOR id = parent_id
AND statement_id = '$statement_id'";
$stmt2 = ociparse($this->db_connect_id, $sql);
ociexecute($stmt2);
$row = array();
while (ocifetchinto($stmt2, $row, OCI_ASSOC + OCI_RETURN_NULLS))
{
$html_table = $this->sql_report('add_select_row', $query, $html_table, $row);
}
ocifreestatement($stmt2);
// Remove the plan we just made, we delete them on request anyway
$stmt2 = ociparse($this->db_connect_id, "DELETE FROM $table WHERE statement_id='$statement_id'");
ociexecute($stmt2);
ocifreestatement($stmt2);
}
ocifreestatement($stmt);
if ($html_table)
{
$this->html_hold .= '</table>';
}
break;
case 'fromcache':