mysql_field_seek
<?php
/*
this function might help in the case described above :-)
*/
function mysql_field_table_resolve_alias($inQuery,$inResult,$inFieldName) {
$theNameOrAlias = mysql_field_table($inResult,$inFieldName);
//check, if AS syntax is being used
if(ereg(" AS ",$inQuery)) {
//catch words in query
$theWords = explode(" ",ereg_replace(",|\n"," ",$inQuery));
//find the words preceding and following AS
foreach($theWords as $theIndex => $theWord) {
if(trim($theWord) == "AS"
&& isset($theWords[$theIndex-1])
&& isset($theWords[$theIndex+1])
&& $theWords[$theIndex+1] == $theNameOrAlias
) {
$theNameOrAlias = $theWords[$theIndex-1];
break 1;
}
}
}
return $theNameOrAlias;
}
?>
mysql_field_table
(PHP 4, PHP 5, PECL mysql:1.0)
mysql_field_table — Get name of the table the specified field is in
Description
string mysql_field_table ( resource $result, int $field_offset )Returns the name of the table that the specified field is in.
Parameters
- result
The result resource that is being evaluated. This result comes from a call to mysql_query().
- field_offset
The numerical field offset. The field_offset starts at 0. If field_offset does not exist, an error of level E_WARNING is also issued.
Return Values
The name of the table on success.
Examples
Example 1396. A mysql_field_table() example
<?php
$result = mysql_query("SELECT name,comment FROM people,comments");
if (!$result) {
echo 'Could not run query: ' . mysql_error();
exit;
}
// Assuming name is in the people table
$table = mysql_field_table($result, 'name');
echo $table; // people
?>
Notes
Note: For downward compatibility, the following deprecated alias may be used: mysql_fieldtable()
See Also
| mysql_list_tables() |
add a note
User Contributed Notesmysql_field_table
spam at blondella dot de
03-Oct-2006 11:09
03-Oct-2006 11:09
me at thomaskeller dot biz
23-Nov-2005 09:15
23-Nov-2005 09:15
Beware that if you upgrade to MySQL 5 from any earlier version WITHOUT dumping and reloading your data (just by keeping the binary data in MyISAM table files), you might get weird output on the "table" value for mysql_fetch_field and in this function. Weird means that the table name is randomly set or not.
This behaviour seems to popup only if the SQL query contains a ORDER BY clause. A bug is already reported:
http://bugs.mysql.com/bug.php?id=14915
To prevent the issue, dump and reload all participating tables in your query or do
CREATE TABLE tmp SELECT * FROM table;
DROP TABLE table;
ALTER TABLE tmp RENAME table;
on each one via commandline client.
cptnemo
15-Aug-2004 02:18
15-Aug-2004 02:18
When trying to find table names for a (My)SQL query containing 'tablename AS alias', mysql_field_table() only returns the alias as specified in the AS clause, and not the tablename.