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DatabaseInterface.php
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2431 lines (2104 loc) · 75.3 KB
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<?php
/**
* Main interface for database interactions
*/
declare(strict_types=1);
namespace PhpMyAdmin;
use PhpMyAdmin\ConfigStorage\Relation;
use PhpMyAdmin\Database\DatabaseList;
use PhpMyAdmin\Dbal\DatabaseName;
use PhpMyAdmin\Dbal\DbalInterface;
use PhpMyAdmin\Dbal\DbiExtension;
use PhpMyAdmin\Dbal\DbiMysqli;
use PhpMyAdmin\Dbal\ResultInterface;
use PhpMyAdmin\Dbal\Warning;
use PhpMyAdmin\Html\Generator;
use PhpMyAdmin\Query\Cache;
use PhpMyAdmin\Query\Compatibility;
use PhpMyAdmin\Query\Generator as QueryGenerator;
use PhpMyAdmin\Query\Utilities;
use PhpMyAdmin\SqlParser\Context;
use PhpMyAdmin\Utils\SessionCache;
use function __;
use function array_column;
use function array_combine;
use function array_diff;
use function array_keys;
use function array_map;
use function array_merge;
use function array_multisort;
use function array_reverse;
use function array_shift;
use function array_slice;
use function basename;
use function closelog;
use function count;
use function defined;
use function explode;
use function implode;
use function in_array;
use function is_array;
use function is_int;
use function is_string;
use function mb_strtolower;
use function microtime;
use function openlog;
use function reset;
use function sprintf;
use function str_contains;
use function str_replace;
use function str_starts_with;
use function stripos;
use function strlen;
use function strtolower;
use function strtoupper;
use function strtr;
use function substr;
use function syslog;
use function trigger_error;
use function uasort;
use function uksort;
use function usort;
use const E_USER_WARNING;
use const LOG_INFO;
use const LOG_NDELAY;
use const LOG_PID;
use const LOG_USER;
use const SORT_ASC;
use const SORT_DESC;
/**
* Main interface for database interactions
*/
class DatabaseInterface implements DbalInterface
{
/**
* Force STORE_RESULT method, ignored by classic MySQL.
*/
public const QUERY_BUFFERED = 0;
/**
* Do not read all rows immediately.
*/
public const QUERY_UNBUFFERED = 2;
/**
* Get session variable.
*/
public const GETVAR_SESSION = 1;
/**
* Get global variable.
*/
public const GETVAR_GLOBAL = 2;
/**
* User connection.
*/
public const CONNECT_USER = 0x100;
/**
* Control user connection.
*/
public const CONNECT_CONTROL = 0x101;
/**
* Auxiliary connection.
*
* Used for example for replication setup.
*/
public const CONNECT_AUXILIARY = 0x102;
/** @var DbiExtension */
private $extension;
/**
* Opened database links
*
* @var array
*/
private $links;
/** @var array Current user and host cache */
private $currentUser;
/** @var array<int, array<int, string>>|null Current role and host cache */
private $currentRoleAndHost = null;
/** @var string|null lower_case_table_names value cache */
private $lowerCaseTableNames = null;
/** @var bool Whether connection is MariaDB */
private $isMariaDb = false;
/** @var bool Whether connection is Percona */
private $isPercona = false;
/** @var int Server version as number */
private $versionInt = 55000;
/** @var string Server version */
private $versionString = '5.50.0';
/** @var string Server version comment */
private $versionComment = '';
/** @var Types MySQL types data */
public $types;
/** @var Cache */
private $cache;
/** @var float */
public $lastQueryExecutionTime = 0;
/**
* @param DbiExtension $ext Object to be used for database queries
*/
public function __construct(DbiExtension $ext)
{
$this->extension = $ext;
$this->links = [];
if (defined('TESTSUITE')) {
$this->links[self::CONNECT_USER] = 1;
$this->links[self::CONNECT_CONTROL] = 2;
}
$this->currentUser = [];
$this->cache = new Cache();
$this->types = new Types($this);
}
/**
* runs a query
*
* @param string $query SQL query to execute
* @param mixed $link optional database link to use
* @param int $options optional query options
* @param bool $cache_affected_rows whether to cache affected rows
*/
public function query(
string $query,
$link = self::CONNECT_USER,
int $options = self::QUERY_BUFFERED,
bool $cache_affected_rows = true
): ResultInterface {
$result = $this->tryQuery($query, $link, $options, $cache_affected_rows);
if (! $result) {
// The following statement will exit
Generator::mysqlDie($this->getError($link), $query);
exit;
}
return $result;
}
public function getCache(): Cache
{
return $this->cache;
}
/**
* runs a query and returns the result
*
* @param string $query query to run
* @param mixed $link link type
* @param int $options if DatabaseInterface::QUERY_UNBUFFERED
* is provided, it will instruct the extension
* to use unbuffered mode
* @param bool $cache_affected_rows whether to cache affected row
*
* @return ResultInterface|false
*/
public function tryQuery(
string $query,
$link = self::CONNECT_USER,
int $options = self::QUERY_BUFFERED,
bool $cache_affected_rows = true
) {
$debug = isset($GLOBALS['cfg']['DBG']) && $GLOBALS['cfg']['DBG']['sql'];
if (! isset($this->links[$link])) {
return false;
}
$time = microtime(true);
$result = $this->extension->realQuery($query, $this->links[$link], $options);
if ($link === self::CONNECT_USER) {
$this->lastQueryExecutionTime = microtime(true) - $time;
}
if ($cache_affected_rows) {
$GLOBALS['cached_affected_rows'] = $this->affectedRows($link, false);
}
if ($debug) {
$errorMessage = $this->getError($link);
Utilities::debugLogQueryIntoSession(
$query,
$errorMessage !== '' ? $errorMessage : null,
$result,
$this->lastQueryExecutionTime
);
if ($GLOBALS['cfg']['DBG']['sqllog']) {
$warningsCount = 0;
if (isset($this->links[$link]->warning_count)) {
$warningsCount = $this->links[$link]->warning_count;
}
openlog('phpMyAdmin', LOG_NDELAY | LOG_PID, LOG_USER);
syslog(
LOG_INFO,
sprintf(
'SQL[%s?route=%s]: %0.3f(W:%d,C:%s,L:0x%02X) > %s',
basename($_SERVER['SCRIPT_NAME']),
Routing::getCurrentRoute(),
$this->lastQueryExecutionTime,
$warningsCount,
$cache_affected_rows ? 'y' : 'n',
$link,
$query
)
);
closelog();
}
}
if ($result !== false && Tracker::isActive()) {
Tracker::handleQuery($query);
}
return $result;
}
/**
* Send multiple SQL queries to the database server and execute the first one
*
* @param string $multiQuery multi query statement to execute
* @param int $linkIndex index of the opened database link
*/
public function tryMultiQuery(
string $multiQuery = '',
$linkIndex = self::CONNECT_USER
): bool {
if (! isset($this->links[$linkIndex])) {
return false;
}
return $this->extension->realMultiQuery($this->links[$linkIndex], $multiQuery);
}
/**
* Executes a query as controluser.
* The result is always buffered and never cached
*
* @param string $sql the query to execute
*
* @return ResultInterface the result set
*/
public function queryAsControlUser(string $sql): ResultInterface
{
// Avoid caching of the number of rows affected; for example, this function
// is called for tracking purposes but we want to display the correct number
// of rows affected by the original query, not by the query generated for
// tracking.
return $this->query($sql, self::CONNECT_CONTROL, self::QUERY_BUFFERED, false);
}
/**
* Executes a query as controluser.
* The result is always buffered and never cached
*
* @param string $sql the query to execute
*
* @return ResultInterface|false the result set, or false if the query failed
*/
public function tryQueryAsControlUser(string $sql)
{
// Avoid caching of the number of rows affected; for example, this function
// is called for tracking purposes but we want to display the correct number
// of rows affected by the original query, not by the query generated for
// tracking.
return $this->tryQuery($sql, self::CONNECT_CONTROL, self::QUERY_BUFFERED, false);
}
/**
* returns array with table names for given db
*
* @param string $database name of database
* @param mixed $link mysql link resource|object
*
* @return array tables names
*/
public function getTables(string $database, $link = self::CONNECT_USER): array
{
if ($database === '') {
return [];
}
$tables = $this->fetchResult(
'SHOW TABLES FROM ' . Util::backquote($database) . ';',
null,
0,
$link
);
if ($GLOBALS['cfg']['NaturalOrder']) {
usort($tables, 'strnatcasecmp');
}
return $tables;
}
/**
* returns array of all tables in given db or dbs
* this function expects unquoted names:
* RIGHT: my_database
* WRONG: `my_database`
* WRONG: my\_database
* if $tbl_is_group is true, $table is used as filter for table names
*
* <code>
* $dbi->getTablesFull('my_database');
* $dbi->getTablesFull('my_database', 'my_table'));
* $dbi->getTablesFull('my_database', 'my_tables_', true));
* </code>
*
* @param string $database database
* @param string|array $table table name(s)
* @param bool $tbl_is_group $table is a table group
* @param int $limit_offset zero-based offset for the count
* @param bool|int $limit_count number of tables to return
* @param string $sort_by table attribute to sort by
* @param string $sort_order direction to sort (ASC or DESC)
* @param string|null $table_type whether table or view
* @param mixed $link link type
*
* @return array list of tables in given db(s)
*
* @todo move into Table
*/
public function getTablesFull(
string $database,
$table = '',
bool $tbl_is_group = false,
int $limit_offset = 0,
$limit_count = false,
string $sort_by = 'Name',
string $sort_order = 'ASC',
?string $table_type = null,
$link = self::CONNECT_USER
): array {
if ($limit_count === true) {
$limit_count = $GLOBALS['cfg']['MaxTableList'];
}
$tables = [];
$paging_applied = false;
if ($limit_count && is_array($table) && $sort_by === 'Name') {
if ($sort_order === 'DESC') {
$table = array_reverse($table);
}
$table = array_slice($table, $limit_offset, $limit_count);
$paging_applied = true;
}
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
$sql_where_table = QueryGenerator::getTableCondition(
is_array($table) ? array_map(
[
$this,
'escapeString',
],
$table
) : $this->escapeString($table),
$tbl_is_group,
$table_type
);
// for PMA bc:
// `SCHEMA_FIELD_NAME` AS `SHOW_TABLE_STATUS_FIELD_NAME`
//
// on non-Windows servers,
// added BINARY in the WHERE clause to force a case sensitive
// comparison (if we are looking for the db Aa we don't want
// to find the db aa)
$sql = QueryGenerator::getSqlForTablesFull([$this->escapeString($database)], $sql_where_table);
// Sort the tables
$sql .= ' ORDER BY ' . $sort_by . ' ' . $sort_order;
if ($limit_count && ! $paging_applied) {
$sql .= ' LIMIT ' . $limit_count . ' OFFSET ' . $limit_offset;
}
/** @var mixed[][][] $tables */
$tables = $this->fetchResult(
$sql,
[
'TABLE_SCHEMA',
'TABLE_NAME',
],
null,
$link
);
// here, we check for Mroonga engine and compute the good data_length and index_length
// in the StructureController only we need to sum the two values as the other engines
foreach ($tables as $one_database_name => $one_database_tables) {
foreach ($one_database_tables as $one_table_name => $one_table_data) {
if ($one_table_data['Engine'] !== 'Mroonga') {
continue;
}
if (! StorageEngine::hasMroongaEngine()) {
continue;
}
[
$tables[$one_database_name][$one_table_name]['Data_length'],
$tables[$one_database_name][$one_table_name]['Index_length'],
] = StorageEngine::getMroongaLengths($one_database_name, (string) $one_table_name);
}
}
if ($sort_by === 'Name' && $GLOBALS['cfg']['NaturalOrder']) {
// here, the array's first key is by schema name
foreach ($tables as $one_database_name => $one_database_tables) {
uksort($one_database_tables, 'strnatcasecmp');
if ($sort_order === 'DESC') {
$one_database_tables = array_reverse($one_database_tables);
}
$tables[$one_database_name] = $one_database_tables;
}
} elseif ($sort_by === 'Data_length') {
// Size = Data_length + Index_length
foreach ($tables as $one_database_name => $one_database_tables) {
uasort(
$one_database_tables,
/**
* @param array $a
* @param array $b
*/
static function ($a, $b) {
$aLength = $a['Data_length'] + $a['Index_length'];
$bLength = $b['Data_length'] + $b['Index_length'];
return $aLength <=> $bLength;
}
);
if ($sort_order === 'DESC') {
$one_database_tables = array_reverse($one_database_tables);
}
$tables[$one_database_name] = $one_database_tables;
}
}
// on windows with lower_case_table_names = 1
// MySQL returns
// with SHOW DATABASES or information_schema.SCHEMATA: `Test`
// but information_schema.TABLES gives `test`
// see https://github.com/phpmyadmin/phpmyadmin/issues/8402
$tables = $tables[$database]
?? $tables[mb_strtolower($database)]
?? [];
}
// If permissions are wrong on even one database directory,
// information_schema does not return any table info for any database
// this is why we fall back to SHOW TABLE STATUS even for MySQL >= 50002
if ($tables === []) {
$sql = 'SHOW TABLE STATUS FROM ' . Util::backquote($database);
if (($table !== '' && $table !== []) || ($tbl_is_group === true) || $table_type) {
$sql .= ' WHERE';
$needAnd = false;
if (($table !== '' && $table !== []) || ($tbl_is_group === true)) {
if (is_array($table)) {
$sql .= ' `Name` IN (\''
. implode(
'\', \'',
array_map(
[
$this,
'escapeString',
],
$table
)
) . '\')';
} else {
$sql .= " `Name` LIKE '"
. $this->escapeMysqlLikeString($table, $link)
. "%'";
}
$needAnd = true;
}
if ($table_type) {
if ($needAnd) {
$sql .= ' AND';
}
if ($table_type === 'view') {
$sql .= " `Comment` = 'VIEW'";
} elseif ($table_type === 'table') {
$sql .= " `Comment` != 'VIEW'";
}
}
}
$each_tables = $this->fetchResult($sql, 'Name', null, $link);
// here, we check for Mroonga engine and compute the good data_length and index_length
// in the StructureController only we need to sum the two values as the other engines
foreach ($each_tables as $table_name => $table_data) {
if ($table_data['Engine'] !== 'Mroonga') {
continue;
}
if (! StorageEngine::hasMroongaEngine()) {
continue;
}
[
$each_tables[$table_name]['Data_length'],
$each_tables[$table_name]['Index_length'],
] = StorageEngine::getMroongaLengths($database, $table_name);
}
// Sort naturally if the config allows it and we're sorting
// the Name column.
if ($sort_by === 'Name' && $GLOBALS['cfg']['NaturalOrder']) {
uksort($each_tables, 'strnatcasecmp');
if ($sort_order === 'DESC') {
$each_tables = array_reverse($each_tables);
}
} else {
// Prepare to sort by creating array of the selected sort
// value to pass to array_multisort
// Size = Data_length + Index_length
$sortValues = [];
if ($sort_by === 'Data_length') {
foreach ($each_tables as $table_name => $table_data) {
$sortValues[$table_name] = strtolower(
(string) ($table_data['Data_length']
+ $table_data['Index_length'])
);
}
} else {
foreach ($each_tables as $table_name => $table_data) {
$sortValues[$table_name] = strtolower($table_data[$sort_by] ?? '');
}
}
if ($sortValues) {
// See https://stackoverflow.com/a/32461188 for the explanation of below hack
$keys = array_keys($each_tables);
if ($sort_order === 'DESC') {
array_multisort($sortValues, SORT_DESC, $each_tables, $keys);
} else {
array_multisort($sortValues, SORT_ASC, $each_tables, $keys);
}
$each_tables = array_combine($keys, $each_tables);
}
// cleanup the temporary sort array
unset($sortValues);
}
if ($limit_count && ! $paging_applied) {
$each_tables = array_slice($each_tables, $limit_offset, $limit_count, true);
}
$tables = Compatibility::getISCompatForGetTablesFull($each_tables, $database);
}
if ($tables !== []) {
// cache table data, so Table does not require to issue SHOW TABLE STATUS again
$this->cache->cacheTableData($database, $tables);
}
return $tables;
}
/**
* Get VIEWs in a particular database
*
* @param string $db Database name to look in
*
* @return Table[] Set of VIEWs inside the database
*/
public function getVirtualTables(string $db): array
{
/** @var string[] $tables_full */
$tables_full = array_column($this->getTablesFull($db), 'TABLE_NAME');
$views = [];
foreach ($tables_full as $table) {
$table = $this->getTable($db, $table);
if (! $table->isView()) {
continue;
}
$views[] = $table;
}
return $views;
}
/**
* returns array with databases containing extended infos about them
*
* @param string|null $database database
* @param bool $force_stats retrieve stats also for MySQL < 5
* @param int $link link type
* @param string $sort_by column to order by
* @param string $sort_order ASC or DESC
* @param int $limit_offset starting offset for LIMIT
* @param bool|int $limit_count row count for LIMIT or true
* for $GLOBALS['cfg']['MaxDbList']
*
* @return array
*
* @todo move into ListDatabase?
*/
public function getDatabasesFull(
?string $database = null,
bool $force_stats = false,
$link = self::CONNECT_USER,
string $sort_by = 'SCHEMA_NAME',
string $sort_order = 'ASC',
int $limit_offset = 0,
$limit_count = false
): array {
$sort_order = strtoupper($sort_order);
if ($limit_count === true) {
$limit_count = $GLOBALS['cfg']['MaxDbList'];
}
$apply_limit_and_order_manual = true;
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
/**
* if $GLOBALS['cfg']['NaturalOrder'] is enabled, we cannot use LIMIT
* cause MySQL does not support natural ordering,
* we have to do it afterward
*/
$limit = '';
if (! $GLOBALS['cfg']['NaturalOrder']) {
if ($limit_count) {
$limit = ' LIMIT ' . $limit_count . ' OFFSET ' . $limit_offset;
}
$apply_limit_and_order_manual = false;
}
// get table information from information_schema
$sqlWhereSchema = '';
if ($database !== null) {
$sqlWhereSchema = 'WHERE `SCHEMA_NAME` LIKE \''
. $this->escapeString($database, $link) . '\'';
}
$sql = QueryGenerator::getInformationSchemaDatabasesFullRequest(
$force_stats,
$sqlWhereSchema,
$sort_by,
$sort_order,
$limit
);
$databases = $this->fetchResult($sql, 'SCHEMA_NAME', null, $link);
$mysql_error = $this->getError($link);
if (! count($databases) && isset($GLOBALS['errno'])) {
Generator::mysqlDie($mysql_error, $sql);
}
// display only databases also in official database list
// f.e. to apply hide_db and only_db
$drops = array_diff(
array_keys($databases),
(array) $GLOBALS['dblist']->databases
);
foreach ($drops as $drop) {
unset($databases[$drop]);
}
} else {
$databases = [];
foreach ($GLOBALS['dblist']->databases as $database_name) {
// Compatibility with INFORMATION_SCHEMA output
$databases[$database_name]['SCHEMA_NAME'] = $database_name;
$databases[$database_name]['DEFAULT_COLLATION_NAME'] = $this->getDbCollation($database_name);
if (! $force_stats) {
continue;
}
// get additional info about tables
$databases[$database_name]['SCHEMA_TABLES'] = 0;
$databases[$database_name]['SCHEMA_TABLE_ROWS'] = 0;
$databases[$database_name]['SCHEMA_DATA_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_MAX_DATA_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_INDEX_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_DATA_FREE'] = 0;
$res = $this->query(
'SHOW TABLE STATUS FROM '
. Util::backquote($database_name) . ';'
);
while ($row = $res->fetchAssoc()) {
$databases[$database_name]['SCHEMA_TABLES']++;
$databases[$database_name]['SCHEMA_TABLE_ROWS'] += $row['Rows'];
$databases[$database_name]['SCHEMA_DATA_LENGTH'] += $row['Data_length'];
$databases[$database_name]['SCHEMA_MAX_DATA_LENGTH'] += $row['Max_data_length'];
$databases[$database_name]['SCHEMA_INDEX_LENGTH'] += $row['Index_length'];
// for InnoDB, this does not contain the number of
// overhead bytes but the total free space
if ($row['Engine'] !== 'InnoDB') {
$databases[$database_name]['SCHEMA_DATA_FREE'] += $row['Data_free'];
}
$databases[$database_name]['SCHEMA_LENGTH'] += $row['Data_length'] + $row['Index_length'];
}
unset($res);
}
}
/**
* apply limit and order manually now
* (caused by older MySQL < 5 or $GLOBALS['cfg']['NaturalOrder'])
*/
if ($apply_limit_and_order_manual) {
usort(
$databases,
static function ($a, $b) use ($sort_by, $sort_order) {
return Utilities::usortComparisonCallback($a, $b, $sort_by, $sort_order);
}
);
/**
* now apply limit
*/
if ($limit_count) {
$databases = array_slice($databases, $limit_offset, $limit_count);
}
}
return $databases;
}
/**
* returns detailed array with all columns for sql
*
* @param string $sql_query target SQL query to get columns
* @param array $view_columns alias for columns
*
* @return array
* @psalm-return list<array<string, mixed>>
*/
public function getColumnMapFromSql(string $sql_query, array $view_columns = []): array
{
$result = $this->tryQuery($sql_query);
if ($result === false) {
return [];
}
$meta = $this->getFieldsMeta($result);
$column_map = [];
$nbColumns = count($view_columns);
foreach ($meta as $i => $field) {
$map = [
'table_name' => $field->table,
'refering_column' => $field->name,
];
if ($nbColumns >= $i && isset($view_columns[$i])) {
$map['real_column'] = $view_columns[$i];
}
$column_map[] = $map;
}
return $column_map;
}
/**
* returns detailed array with all columns for given table in database,
* or all tables/databases
*
* @param string|null $database name of database
* @param string|null $table name of table to retrieve columns from
* @param string|null $column name of specific column
* @param mixed $link mysql link resource
*
* @return array
*/
public function getColumnsFull(
?string $database = null,
?string $table = null,
?string $column = null,
$link = self::CONNECT_USER
): array {
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
[$sql, $arrayKeys] = QueryGenerator::getInformationSchemaColumnsFullRequest(
$database !== null ? $this->escapeString($database, $link) : null,
$table !== null ? $this->escapeString($table, $link) : null,
$column !== null ? $this->escapeString($column, $link) : null
);
return $this->fetchResult($sql, $arrayKeys, null, $link);
}
$columns = [];
if ($database === null) {
foreach ($GLOBALS['dblist']->databases as $database) {
$columns[$database] = $this->getColumnsFull($database, null, null, $link);
}
return $columns;
}
if ($table === null) {
$tables = $this->getTables($database);
foreach ($tables as $table) {
$columns[$table] = $this->getColumnsFull($database, $table, null, $link);
}
return $columns;
}
$sql = 'SHOW FULL COLUMNS FROM '
. Util::backquote($database) . '.' . Util::backquote($table);
if ($column !== null) {
$sql .= " LIKE '" . $this->escapeString($column, $link) . "'";
}
$columns = $this->fetchResult($sql, 'Field', null, $link);
$columns = Compatibility::getISCompatForGetColumnsFull($columns, $database, $table);
if ($column !== null) {
return reset($columns);
}
return $columns;
}
/**
* Returns description of a $column in given table
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param string $column name of column
* @param bool $full whether to return full info or only column names
* @param int $link link type
*
* @return array flat array description
*/
public function getColumn(
string $database,
string $table,
string $column,
bool $full = false,
$link = self::CONNECT_USER
): array {
$sql = QueryGenerator::getColumnsSql(
$database,
$table,
$this->escapeMysqlLikeString($column),
$full
);
/** @var array<string, array> $fields */
$fields = $this->fetchResult($sql, 'Field', null, $link);
$columns = $this->attachIndexInfoToColumns($database, $table, $fields);
return array_shift($columns) ?? [];
}
/**
* Returns descriptions of columns in given table
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param bool $full whether to return full info or only column names
* @param int $link link type
*
* @return array<string, array> array indexed by column names
*/
public function getColumns(
string $database,
string $table,
bool $full = false,
$link = self::CONNECT_USER
): array {
$sql = QueryGenerator::getColumnsSql(
$database,
$table,
null,
$full
);
/** @var array<string, array> $fields */
$fields = $this->fetchResult($sql, 'Field', null, $link);
return $this->attachIndexInfoToColumns($database, $table, $fields);
}
/**
* Attach index information to the column definition
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param array<string, array> $fields column array indexed by their names
*
* @return array<string, array> Column defintions with index information
*/
private function attachIndexInfoToColumns(
string $database,
string $table,
array $fields
): array {
if (! $fields) {
return [];
}
// Check if column is a part of multiple-column index and set its 'Key'.
$indexes = Index::getFromTable($table, $database);
foreach ($fields as $field => $field_data) {
if (! empty($field_data['Key'])) {
continue;
}
foreach ($indexes as $index) {
if (! $index->hasColumn($field)) {
continue;
}
$index_columns = $index->getColumns();
if ($index_columns[$field]->getSeqInIndex() <= 1) {
continue;
}