| Server IP : 79.136.114.73 / Your IP : 3.145.124.186 Web Server : Apache/2.4.7 (Ubuntu) PHP/5.5.9-1ubuntu4.29 OpenSSL/1.0.1f System : Linux b8009 3.13.0-170-generic #220-Ubuntu SMP Thu May 9 12:40:49 UTC 2019 x86_64 User : www-data ( 33) PHP Version : 5.5.9-1ubuntu4.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority, MySQL : ON | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/share/phpmyadmin/ |
Upload File : |
<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Display table relations for viewing and editing
*
* includes phpMyAdmin relations and InnoDB relations
*
* @todo fix name handling: currently names with dots (.) are not properly handled
* for internal relations (but foreign keys relations are correct)
* @todo foreign key constraints require both fields being of equal type and size
* @todo check foreign fields to be from same type and size, all other makes no sense
* @todo add an link to create an index required for constraints,
* or an option to do automatically
* @todo if above todos are fullfilled we can add all fields meet requirements
* in the select dropdown
* @package PhpMyAdmin
*/
/**
* Gets some core libraries
*/
require_once 'libraries/common.inc.php';
require_once 'libraries/index.lib.php';
$response = PMA_Response::getInstance();
$header = $response->getHeader();
$scripts = $header->getScripts();
$scripts->addFile('tbl_relation.js');
$scripts->addFile('indexes.js');
/**
* Sets globals from $_POST
*/
$post_params = array(
'destination',
'destination_foreign',
'display_field',
'fields_name',
'on_delete',
'on_update'
);
foreach ($post_params as $one_post_param) {
if (isset($_POST[$one_post_param])) {
$GLOBALS[$one_post_param] = $_POST[$one_post_param];
}
}
/**
* Gets tables informations
*/
require_once 'libraries/tbl_info.inc.php';
$options_array = array(
'CASCADE' => 'CASCADE',
'SET_NULL' => 'SET NULL',
'NO_ACTION' => 'NO ACTION',
'RESTRICT' => 'RESTRICT',
);
/**
* Gets the relation settings
*/
$cfgRelation = PMA_getRelationsParam();
/**
* Updates
*/
if ($cfgRelation['relwork']) {
$existrel = PMA_getForeigners($db, $table, '', 'internal');
}
if (PMA_Util::isForeignKeySupported($tbl_storage_engine)) {
$existrel_foreign = PMA_getForeigners($db, $table, '', 'foreign');
}
if ($cfgRelation['displaywork']) {
$disp = PMA_getDisplayField($db, $table);
}
// will be used in the logic for internal relations and foreign keys:
$multi_edit_columns_name = isset($_REQUEST['fields_name'])
? $_REQUEST['fields_name']
: null;
$html_output = '';
// u p d a t e s f o r I n t e r n a l r e l a t i o n s
if (isset($destination) && $cfgRelation['relwork']) {
foreach ($destination as $master_field_md5 => $foreign_string) {
$upd_query = false;
// Map the fieldname's md5 back to its real name
$master_field = $multi_edit_columns_name[$master_field_md5];
if (! empty($foreign_string)) {
$foreign_string = trim($foreign_string, '`');
list($foreign_db, $foreign_table, $foreign_field)
= explode('.', $foreign_string);
if (! isset($existrel[$master_field])) {
$upd_query = 'INSERT INTO '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['relation'])
. '(master_db, master_table, master_field, foreign_db,'
. ' foreign_table, foreign_field)'
. ' values('
. '\'' . PMA_Util::sqlAddSlashes($db) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($table) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($master_field) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($foreign_db) . '\', '
. '\'' . PMA_Util::sqlAddSlashes($foreign_table) . '\','
. '\'' . PMA_Util::sqlAddSlashes($foreign_field) . '\')';
} elseif ($existrel[$master_field]['foreign_db'] . '.' .$existrel[$master_field]['foreign_table'] . '.' . $existrel[$master_field]['foreign_field'] != $foreign_string) {
$upd_query = 'UPDATE '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['relation']) . ' SET'
. ' foreign_db = \''
. PMA_Util::sqlAddSlashes($foreign_db) . '\', '
. ' foreign_table = \''
. PMA_Util::sqlAddSlashes($foreign_table) . '\', '
. ' foreign_field = \''
. PMA_Util::sqlAddSlashes($foreign_field) . '\' '
. ' WHERE master_db = \'' . PMA_Util::sqlAddSlashes($db) . '\''
. ' AND master_table = \''
. PMA_Util::sqlAddSlashes($table) . '\''
. ' AND master_field = \''
. PMA_Util::sqlAddSlashes($master_field) . '\'';
} // end if... else....
} elseif (isset($existrel[$master_field])) {
$upd_query = 'DELETE FROM '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['relation'])
. ' WHERE master_db = \'' . PMA_Util::sqlAddSlashes($db) . '\''
. ' AND master_table = \'' . PMA_Util::sqlAddSlashes($table) . '\''
. ' AND master_field = \'' . PMA_Util::sqlAddSlashes($master_field)
. '\'';
} // end if... else....
if ($upd_query) {
PMA_queryAsControlUser($upd_query);
}
} // end while
} // end if (updates for internal relations)
// u p d a t e s f o r f o r e i g n k e y s
// (for now, one index name only; we keep the definitions if the
// foreign db is not the same)
if (isset($_REQUEST['destination_foreign'])) {
$display_query = '';
$seen_error = false;
foreach ($_REQUEST['destination_foreign'] as $master_field_md5 => $foreign_string) {
$create = false;
$drop = false;
// Map the fieldname's md5 back to it's real name
$master_field = $multi_edit_columns_name[$master_field_md5];
if (! empty($foreign_string)) {
list($foreign_db, $foreign_table, $foreign_field)
= PMA_backquoteSplit($foreign_string);
if (! isset($existrel_foreign[$master_field])) {
// no key defined for this field
$create = true;
} elseif (PMA_Util::backquote($existrel_foreign[$master_field]['foreign_db']) != $foreign_db
|| PMA_Util::backquote($existrel_foreign[$master_field]['foreign_table']) != $foreign_table
|| PMA_Util::backquote($existrel_foreign[$master_field]['foreign_field']) != $foreign_field
|| $_REQUEST['constraint_name'][$master_field_md5] != $existrel_foreign[$master_field]['constraint']
|| ($_REQUEST['on_delete'][$master_field_md5] != (! empty($existrel_foreign[$master_field]['on_delete']) ? $existrel_foreign[$master_field]['on_delete'] : 'RESTRICT'))
|| ($_REQUEST['on_update'][$master_field_md5] != (! empty($existrel_foreign[$master_field]['on_update']) ? $existrel_foreign[$master_field]['on_update'] : 'RESTRICT'))
) {
// another foreign key is already defined for this field
// or an option has been changed for ON DELETE or ON UPDATE
$drop = true;
$create = true;
} // end if... else....
} elseif (isset($existrel_foreign[$master_field])) {
$drop = true;
} // end if... else....
$tmp_error_drop = false;
if ($drop) {
$drop_query = PMA_getSQLToDropForeignKey(
$table, $existrel_foreign[$master_field]['constraint']
);
$display_query .= $drop_query . "\n";
PMA_DBI_try_query($drop_query);
$tmp_error_drop = PMA_DBI_getError();
if (! empty($tmp_error_drop)) {
$seen_error = true;
$html_output .= PMA_Util::mysqlDie(
$tmp_error_drop, $drop_query, false, '', false
);
continue;
}
}
$tmp_error_create = false;
if ($create) {
$create_query = PMA_getSQLToCreateForeignKey(
$table, $master_field, $foreign_db, $foreign_table, $foreign_field,
$_REQUEST['constraint_name'][$master_field_md5],
$options_array[$_REQUEST['on_delete'][$master_field_md5]],
$options_array[$_REQUEST['on_update'][$master_field_md5]]
);
$display_query .= $create_query . "\n";
PMA_DBI_try_query($create_query);
$tmp_error_create = PMA_DBI_getError();
if (! empty($tmp_error_create)) {
$seen_error = true;
if (substr($tmp_error_create, 1, 4) == '1005') {
$message = PMA_Message::error(
__('Error creating foreign key on %1$s (check data types)')
);
$message->addParam($master_field);
$message->display();
} else {
$html_output .= PMA_Util::mysqlDie(
$tmp_error_create, $create_query, false, '', false
);
}
$html_output .= PMA_Util::showMySQLDocu(
'manual_Table_types', 'InnoDB_foreign_key_constraints'
) . "\n";
}
// this is an alteration and the old constraint has been dropped
// without creation of a new one
if ($drop && $create && empty($tmp_error_drop)
&& ! empty($tmp_error_create)
) {
// a rollback may be better here
$sql_query_recreate = '# Restoring the dropped constraint...' . "\n";
$sql_query_recreate .= PMA_getSQLToCreateForeignKey(
$table, $master_field,
PMA_Util::backquote($existrel_foreign[$master_field]['foreign_db']),
PMA_Util::backquote($existrel_foreign[$master_field]['foreign_table']),
PMA_Util::backquote($existrel_foreign[$master_field]['foreign_field']),
$existrel_foreign[$master_field]['constraint'],
$options_array[$existrel_foreign[$master_field]['on_delete']],
$options_array[$existrel_foreign[$master_field]['on_update']]
);
$display_query .= $sql_query_recreate . "\n";
PMA_DBI_try_query($sql_query_recreate);
}
}
} // end foreach
if (! empty($display_query) && ! $seen_error) {
$html_output .= PMA_Util::getMessage(
__('Your SQL query has been executed successfully'),
null, 'success'
);
}
} // end if isset($destination_foreign)
// U p d a t e s f o r d i s p l a y f i e l d
if ($cfgRelation['displaywork'] && isset($display_field)) {
$upd_query = false;
if ($disp) {
if ($display_field != '') {
$upd_query = 'UPDATE '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['table_info'])
. ' SET display_field = \''
. PMA_Util::sqlAddSlashes($display_field) . '\''
. ' WHERE db_name = \'' . PMA_Util::sqlAddSlashes($db) . '\''
. ' AND table_name = \'' . PMA_Util::sqlAddSlashes($table) . '\'';
} else {
$upd_query = 'DELETE FROM '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['table_info'])
. ' WHERE db_name = \'' . PMA_Util::sqlAddSlashes($db) . '\''
. ' AND table_name = \'' . PMA_Util::sqlAddSlashes($table) . '\'';
}
} elseif ($display_field != '') {
$upd_query = 'INSERT INTO '
. PMA_Util::backquote($GLOBALS['cfgRelation']['db'])
. '.' . PMA_Util::backquote($cfgRelation['table_info'])
. '(db_name, table_name, display_field) VALUES('
. '\'' . PMA_Util::sqlAddSlashes($db) . '\','
. '\'' . PMA_Util::sqlAddSlashes($table) . '\','
. '\'' . PMA_Util::sqlAddSlashes($display_field) . '\')';
}
if ($upd_query) {
PMA_queryAsControlUser($upd_query);
}
} // end if
// If we did an update, refresh our data
if (isset($destination) && $cfgRelation['relwork']) {
$existrel = PMA_getForeigners($db, $table, '', 'internal');
}
if (isset($destination_foreign)
&& PMA_Util::isForeignKeySupported($tbl_storage_engine)
) {
$existrel_foreign = PMA_getForeigners($db, $table, '', 'foreign');
}
if ($cfgRelation['displaywork']) {
$disp = PMA_getDisplayField($db, $table);
}
/**
* Dialog
*/
// common form
$html_output .= '<form method="post" action="tbl_relation.php">' . "\n"
. PMA_generate_common_hidden_inputs($db, $table);
// relations
if ($cfgRelation['relwork']
|| PMA_Util::isForeignKeySupported($tbl_storage_engine)
) {
// To choose relations we first need all tables names in current db
// and if the main table supports foreign keys
// we use SHOW TABLE STATUS because we need to find other tables of the
// same engine.
if (PMA_Util::isForeignKeySupported($tbl_storage_engine)) {
$tab_query = 'SHOW TABLE STATUS FROM ' . PMA_Util::backquote($db);
// [0] of the row is the name
// [1] is the type
} else {
$tab_query = 'SHOW TABLES FROM ' . PMA_Util::backquote($db);
// [0] of the row is the name
}
$tab_rs = PMA_DBI_query($tab_query, null, PMA_DBI_QUERY_STORE);
$selectboxall[] = '';
$selectboxall_foreign[] = '';
while ($curr_table = PMA_DBI_fetch_row($tab_rs)) {
$current_table = new PMA_Table($curr_table[0], $db);
// explicitely ask for non-quoted list of indexed columns
$selectboxall = array_merge(
$selectboxall,
$current_table->getUniqueColumns($backquoted = false)
);
// if foreign keys are supported, collect all keys from other
// tables of the same engine
if (PMA_Util::isForeignKeySupported($tbl_storage_engine)
&& isset($curr_table[1])
&& strtoupper($curr_table[1]) == $tbl_storage_engine
) {
// explicitely ask for non-quoted list of indexed columns
// need to obtain backquoted values to support dots inside values
$selectboxall_foreign = array_merge(
$selectboxall_foreign,
$current_table->getIndexedColumns($backquoted = true)
);
}
} // end while over tables
} // end if
// Now find out the columns of our $table
// need to use PMA_DBI_QUERY_STORE with PMA_DBI_num_rows() in mysqli
$columns = PMA_DBI_get_columns($db, $table);
if (count($columns) > 0) {
foreach ($columns as $row) {
$save_row[] = $row;
}
$saved_row_cnt = count($save_row);
$html_output .= '<fieldset>'
. '<legend>' . __('Relations'). '</legend>'
. '<table>'
. '<tr><th>' . __('Column') . '</th>';
if ($cfgRelation['relwork']) {
$html_output .= '<th>' . __('Internal relation');
if (PMA_Util::isForeignKeySupported($tbl_storage_engine)) {
$html_output .= PMA_Util::showHint(
__(
'An internal relation is not necessary when a corresponding'
. ' FOREIGN KEY relation exists.'
)
);
}
$html_output .= '</th>';
}
if (PMA_Util::isForeignKeySupported($tbl_storage_engine)) {
// this does not have to be translated, it's part of the MySQL syntax
$html_output .= '<th colspan="2">' . __('Foreign key constraint')
. ' (' . $tbl_storage_engine . ')';
$html_output .= '</th>';
}
$html_output .= '</tr>';
$odd_row = true;
for ($i = 0; $i < $saved_row_cnt; $i++) {
$myfield = $save_row[$i]['Field'];
// Use an md5 as array index to avoid having special characters
// in the name atttibure (see bug #1746964 )
$myfield_md5 = md5($myfield);
$myfield_html = htmlspecialchars($myfield);
$html_output .= '<tr class="' . ($odd_row ? 'odd' : 'even') . '">'
. '<td class="center">'
. '<strong>' . $myfield_html . '</strong>'
. '<input type="hidden" name="fields_name[' . $myfield_md5 . ']"'
. ' value="' . $myfield_html . '"/>'
. '</td>';
$odd_row = ! $odd_row;
if ($cfgRelation['relwork']) {
$html_output .= '<td><select name="destination[' . $myfield_md5 . ']">';
// PMA internal relations
if (isset($existrel[$myfield])) {
$foreign_field = $existrel[$myfield]['foreign_db'] . '.'
. $existrel[$myfield]['foreign_table'] . '.'
. $existrel[$myfield]['foreign_field'];
} else {
$foreign_field = false;
}
$seen_key = false;
foreach ($selectboxall as $value) {
$html_output .= '<option value="' . htmlspecialchars($value) . '"';
if ($foreign_field && $value == $foreign_field) {
$html_output .= ' selected="selected"';
$seen_key = true;
}
$html_output .= '>' . htmlspecialchars($value) . '</option>'. "\n";
} // end while
// if the link defined in relationtable points to a foreign field
// that is not a key in the foreign table, we show the link
// (will not be shown with an arrow)
if ($foreign_field && !$seen_key) {
$html_output .= '<option value="' . htmlspecialchars($foreign_field)
. '"'
. ' selected="selected">' . $foreign_field . '</option>'. "\n";
}
$html_output .= '</select>'
. '</td>';
} // end if (internal relations)
if (PMA_Util::isForeignKeySupported($tbl_storage_engine)) {
$html_output .= '<td>';
if (!empty($save_row[$i]['Key'])) {
$html_output .= '<span class="formelement">'
. '<select name="destination_foreign[' . $myfield_md5 . ']"'
. ' class="referenced_column_dropdown">';
if (isset($existrel_foreign[$myfield])) {
// need to PMA_Util::backquote to support a dot character inside
// an element
$foreign_field = PMA_Util::backquote(
$existrel_foreign[$myfield]['foreign_db']
)
. '.' . PMA_Util::backquote(
$existrel_foreign[$myfield]['foreign_table']
)
. '.' . PMA_Util::backquote(
$existrel_foreign[$myfield]['foreign_field']
);
} else {
$foreign_field = false;
}
$found_foreign_field = false;
foreach ($selectboxall_foreign as $value) {
$html_output .= '<option value="'
. htmlspecialchars($value) . '"';
if ($foreign_field && $value == $foreign_field) {
$html_output .= ' selected="selected"';
$found_foreign_field = true;
}
$html_output .= '>' . htmlspecialchars($value)
. '</option>'. "\n";
} // end while
// we did not find the foreign field in the tables of current db,
// must be defined in another db so show it to avoid erasing it
if (!$found_foreign_field && $foreign_field) {
$html_output .= '<option value="'
. htmlspecialchars($foreign_field) . '"'
. ' selected="selected"'
. '>' . $foreign_field . '</option>' . "\n";
}
$html_output .= '</select>'
. '</span>';
// For constraint name
$html_output .= '<span class="formelement">';
$constraint_name = isset($existrel_foreign[$myfield]['constraint'])
? $existrel_foreign[$myfield]['constraint'] : '';
$html_output .= __('Constraint name');
$html_output .= '<input type="text" name="constraint_name['
. $myfield_md5 . ']"'
. ' value="' . $constraint_name . '"/>';
$html_output .= '</span>' . "\n";
$html_output .= '<span class="formelement">';
// For ON DELETE and ON UPDATE, the default action
// is RESTRICT as per MySQL doc; however, a SHOW CREATE TABLE
// won't display the clause if it's set as RESTRICT.
$on_delete = isset($existrel_foreign[$myfield]['on_delete'])
? $existrel_foreign[$myfield]['on_delete'] : 'RESTRICT';
$html_output .= PMA_generateDropdown(
'ON DELETE',
'on_delete[' . $myfield_md5 . ']',
$options_array,
$on_delete
);
$html_output .= '</span>' . "\n";
$html_output .= '<span class="formelement">' . "\n";
$on_update = isset($existrel_foreign[$myfield]['on_update'])
? $existrel_foreign[$myfield]['on_update'] : 'RESTRICT';
$html_output .= PMA_generateDropdown(
'ON UPDATE',
'on_update[' . $myfield_md5 . ']',
$options_array,
$on_update
);
$html_output .= '</span>' . "\n";
} else {
$html_output .= __('No index defined! Create one below');
} // end if (a key exists)
$html_output .= '</td>';
} // end if (InnoDB)
$html_output .= '</tr>';
} // end for
unset( $myfield, $myfield_md5, $myfield_html);
$html_output .= '</table>' . "\n"
. '</fieldset>' . "\n";
if ($cfgRelation['displaywork']) {
// Get "display_field" infos
$disp = PMA_getDisplayField($db, $table);
$html_output .= '<fieldset>'
. '<label>' . __('Choose column to display') . ': </label>'
. '<select name="display_field">'
. '<option value="">---</option>';
foreach ($save_row AS $row) {
$html_output .= '<option value="'
. htmlspecialchars($row['Field']) . '"';
if (isset($disp) && $row['Field'] == $disp) {
$html_output .= ' selected="selected"';
}
$html_output .= '>' . htmlspecialchars($row['Field'])
. '</option>'. "\n";
} // end while
$html_output .= '</select>'
. '</fieldset>';
} // end if (displayworks)
$html_output .= '<fieldset class="tblFooters">'
. '<input type="submit" value="' . __('Save') . '" />'
. '</fieldset>'
. '</form>';
} // end if (we have columns in this table)
if (PMA_Util::isForeignKeySupported($tbl_storage_engine)) {
$html_output .= '<div id="index_div" class="ajax" >'
. PMA_getHtmlForDisplayIndexes();
}
// Render HTML output
PMA_Response::getInstance()->addHTML($html_output);
/**
* Generate dropdown choices
*
* @param string $dropdown_question Message to display
* @param string $select_name Name of the <select> field
* @param array $choices Choices for dropdown
* @param string $selected_value Selected value
*
* @return string The html code for existing value (for selected)
*
* @access public
*/
function PMA_generateDropdown(
$dropdown_question, $select_name, $choices, $selected_value
) {
$html_output = htmlspecialchars($dropdown_question) . ' '
. '<select name="' . htmlspecialchars($select_name) . '">' . "\n";
foreach ($choices as $one_value => $one_label) {
$html_output .= '<option value="' . htmlspecialchars($one_value) . '"';
if ($selected_value == $one_value) {
$html_output .= ' selected="selected" ';
}
$html_output .= '>' . htmlspecialchars($one_label) . '</option>' . "\n";
}
$html_output .= '</select>' . "\n";
return $html_output;
}
/**
* Split a string on backquote pairs
*
* @param string $text original string
*
* @return array containing the elements (and their surrounding backquotes)
*
* @access public
*/
function PMA_backquoteSplit($text)
{
$elements = array();
$final_pos = strlen($text) - 1;
$pos = 0;
while ($pos <= $final_pos) {
$first_backquote = strpos($text, '`', $pos);
$second_backquote = strpos($text, '`', $first_backquote + 1);
// after the second one, there might be another one which means
// this is an escaped backquote
if ($second_backquote < $final_pos && '`' == $text[$second_backquote + 1]) {
$second_backquote = strpos($text, '`', $second_backquote + 2);
}
if (false === $first_backquote || false === $second_backquote) {
break;
}
$elements[] = substr(
$text, $first_backquote, $second_backquote - $first_backquote + 1
);
$pos = $second_backquote + 1;
}
return($elements);
}
/**
* Returns the DROP query for a foreign key constraint
*
* @param string $table table of the foreign key
* @param string $fk foreign key name
*
* @return string DROP query for the foreign key constraint
*/
function PMA_getSQLToDropForeignKey($table, $fk)
{
return 'ALTER TABLE ' . PMA_Util::backquote($table)
. ' DROP FOREIGN KEY ' . PMA_Util::backquote($fk) . ';';
}
/**
* Returns the SQL query for foreign key constraint creation
*
* @param string $table table name
* @param string $field field name
* @param string $foreignDb back-quoted foreign database name
* @param string $foreignTable back-quoted foreign table name
* @param string $foreignField back-quoted foreign field name
* @param string $name name of the constraint
* @param string $onDelete on delete action
* @param string $onUpdate on update action
*
* @return string SQL query for foreign key constraint creation
*/
function PMA_getSQLToCreateForeignKey($table, $field, $foreignDb, $foreignTable,
$foreignField, $name = null, $onDelete = null, $onUpdate = null
) {
$sql_query = 'ALTER TABLE ' . PMA_Util::backquote($table) . ' ADD ';
// if user entered a constraint name
if (! empty($name)) {
$sql_query .= ' CONSTRAINT ' . PMA_Util::backquote($name);
}
$sql_query .= ' FOREIGN KEY (' . PMA_Util::backquote($field) . ')'
. ' REFERENCES ' . $foreignDb . '.' . $foreignTable
. '(' . $foreignField . ')';
if (! empty($onDelete)) {
$sql_query .= ' ON DELETE ' . $onDelete;
}
if (! empty($onUpdate)) {
$sql_query .= ' ON UPDATE ' . $onUpdate;
}
$sql_query .= ';';
return $sql_query;
}
?>