SelectStatement::getAliases() - Code Metrics - Inspection of "Add a CHANGELOG entry for #454" - phpmyadmin/sql-parser - Measure and Improve Code Quality continuously with Scrutinizer

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by William

created 2023-06-01 15:42 UTC

SelectStatement::getAliases() F

↳ Parent: SelectStatement

Complexity

Conditions	24
Paths	1641

Size

Total Lines	72
Code Lines	37

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	39
CRAP Score	24

Importance

Changes

Metric	Value
cc	24
eloc	37
nc	1641
nop	1
dl	0
loc	72
rs	0
c	0
b	0
f	0
ccs	39
cts	39
cp	1
crap	24

How to fix Long Method Complexity

<?php

declare(strict_types=1);

namespace PhpMyAdmin\SqlParser\Statements;

use PhpMyAdmin\SqlParser\Components\ArrayObj;
use PhpMyAdmin\SqlParser\Components\Condition;
use PhpMyAdmin\SqlParser\Components\Expression;
use PhpMyAdmin\SqlParser\Components\FunctionCall;
use PhpMyAdmin\SqlParser\Components\GroupKeyword;
use PhpMyAdmin\SqlParser\Components\IndexHint;
use PhpMyAdmin\SqlParser\Components\IntoKeyword;
use PhpMyAdmin\SqlParser\Components\JoinKeyword;
use PhpMyAdmin\SqlParser\Components\Limit;
use PhpMyAdmin\SqlParser\Components\OptionsArray;
use PhpMyAdmin\SqlParser\Components\OrderKeyword;
use PhpMyAdmin\SqlParser\Statement;

/**
 * `SELECT` statement.
 *
 * SELECT
 *     [ALL | DISTINCT | DISTINCTROW ]
 *       [HIGH_PRIORITY]
 *       [MAX_STATEMENT_TIME = N]
 *       [STRAIGHT_JOIN]
 *       [SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT]
 *       [SQL_CACHE | SQL_NO_CACHE] [SQL_CALC_FOUND_ROWS]
 *     select_expr [, select_expr ...]
 *     [FROM table_references
 *       [PARTITION partition_list]
 *     [WHERE where_condition]
 *     [GROUP BY {col_name | expr | position}
 *       [ASC | DESC], ... [WITH ROLLUP]]
 *     [HAVING where_condition]
 *     [ORDER BY {col_name | expr | position}
 *       [ASC | DESC], ...]
 *     [LIMIT {[offset,] row_count | row_count OFFSET offset}]
 *     [PROCEDURE procedure_name(argument_list)]
 *     [INTO OUTFILE 'file_name'
 *         [CHARACTER SET charset_name]
 *         export_options
 *       | INTO DUMPFILE 'file_name'
 *       | INTO var_name [, var_name]]
 *     [FOR UPDATE | LOCK IN SHARE MODE]]
 */
class SelectStatement extends Statement
{
    /**
     * Options for `SELECT` statements and their slot ID.
     *
     * @var array<string, int|array<int, int|string>>
     * @psalm-var array<string, (positive-int|array{positive-int, ('var'|'var='|'expr'|'expr=')})>
     */
    public static $statementOptions = [
        'ALL' => 1,
        'DISTINCT' => 1,
        'DISTINCTROW' => 1,
        'HIGH_PRIORITY' => 2,
        'MAX_STATEMENT_TIME' => [
            3,
            'var=',
        ],
        'STRAIGHT_JOIN' => 4,
        'SQL_SMALL_RESULT' => 5,
        'SQL_BIG_RESULT' => 6,
        'SQL_BUFFER_RESULT' => 7,
        'SQL_CACHE' => 8,
        'SQL_NO_CACHE' => 8,
        'SQL_CALC_FOUND_ROWS' => 9,
    ];

    /**
     * @var array<string, int|array<int, int|string>>
     * @psalm-var array<string, (positive-int|array{positive-int, ('var'|'var='|'expr'|'expr=')})>
     */
    public static $statementGroupOptions = ['WITH ROLLUP' => 1];

    /**
     * @var array<string, int|array<int, int|string>>
     * @psalm-var array<string, (positive-int|array{positive-int, ('var'|'var='|'expr'|'expr=')})>
     */
    public static $statementEndOptions = [
        'FOR UPDATE' => 1,
        'LOCK IN SHARE MODE' => 1,
    ];

    /**
     * The clauses of this statement, in order.
     *
     * @see Statement::$clauses
     *
     * @var array<string, array<int, int|string>>
     * @psalm-var array<string, array{non-empty-string, (1|2|3)}>
     */
    public static $clauses = [
        'SELECT' => [
            'SELECT',
            2,
        ],
        // Used for options.
        '_OPTIONS' => [
            '_OPTIONS',
            1,
        ],
        // Used for selected expressions.
        '_SELECT' => [
            'SELECT',
            1,
        ],
        'INTO' => [
            'INTO',
            3,
        ],
        'FROM' => [
            'FROM',
            3,
        ],
        'FORCE' => [
            'FORCE',
            1,
        ],
        'USE' => [
            'USE',
            1,
        ],
        'IGNORE' => [
            'IGNORE',
            3,
        ],
        'PARTITION' => [
            'PARTITION',
            3,
        ],

        'JOIN' => [
            'JOIN',
            1,
        ],
        'FULL JOIN' => [
            'FULL JOIN',
            1,
        ],
        'INNER JOIN' => [
            'INNER JOIN',
            1,
        ],
        'LEFT JOIN' => [
            'LEFT JOIN',
            1,
        ],
        'LEFT OUTER JOIN' => [
            'LEFT OUTER JOIN',
            1,
        ],
        'RIGHT JOIN' => [
            'RIGHT JOIN',
            1,
        ],
        'RIGHT OUTER JOIN' => [
            'RIGHT OUTER JOIN',
            1,
        ],
        'NATURAL JOIN' => [
            'NATURAL JOIN',
            1,
        ],
        'NATURAL LEFT JOIN' => [
            'NATURAL LEFT JOIN',
            1,
        ],
        'NATURAL RIGHT JOIN' => [
            'NATURAL RIGHT JOIN',
            1,
        ],
        'NATURAL LEFT OUTER JOIN' => [
            'NATURAL LEFT OUTER JOIN',
            1,
        ],
        'NATURAL RIGHT OUTER JOIN' => [
            'NATURAL RIGHT JOIN',
            1,
        ],
        'WHERE' => [
            'WHERE',
            3,
        ],
        'GROUP BY' => [
            'GROUP BY',
            3,
        ],
        '_GROUP_OPTIONS' => [
            '_GROUP_OPTIONS',
            1,
        ],
        'HAVING' => [
            'HAVING',
            3,
        ],
        'ORDER BY' => [
            'ORDER BY',
            3,
        ],
        'LIMIT' => [
            'LIMIT',
            3,
        ],
        'PROCEDURE' => [
            'PROCEDURE',
            3,
        ],
        'UNION' => [
            'UNION',
            1,
        ],
        'EXCEPT' => [
            'EXCEPT',
            1,
        ],
        'INTERSECT' => [
            'INTERSECT',
            1,
        ],
        '_END_OPTIONS' => [
            '_END_OPTIONS',
            1,
        ],
        // These are available only when `UNION` is present.
        // 'ORDER BY'                      => ['ORDER BY', 3],
        // 'LIMIT'                         => ['LIMIT', 3],
    ];

    /**
     * Expressions that are being selected by this statement.
     *
     * @var Expression[]
     */
    public $expr = [];

    /**
     * Tables used as sources for this statement.
     *
     * @var Expression[]
     */
    public $from = [];

    /**
     * Index hints
     *
     * @var IndexHint[]|null
     */
    public $indexHints;

    /**
     * Partitions used as source for this statement.
     *
     * @var ArrayObj|null
     */
    public $partition;

    /**
     * Conditions used for filtering each row of the result set.
     *
     * @var Condition[]|null
     */
    public $where;

    /**
     * Conditions used for grouping the result set.
     *
     * @var GroupKeyword[]|null
     */
    public $group;

    /**
     * List of options available for the GROUP BY component.
     *
     * @var OptionsArray|null
     */
    public $groupOptions;

    /**
     * Conditions used for filtering the result set.
     *
     * @var Condition[]|null
     */
    public $having;

    /**
     * Specifies the order of the rows in the result set.
     *
     * @var OrderKeyword[]|null
     */
    public $order;

    /**
     * Conditions used for limiting the size of the result set.
     *
     * @var Limit|null
     */
    public $limit;

    /**
     * Procedure that should process the data in the result set.
     *
     * @var FunctionCall|null
     */
    public $procedure;

    /**
     * Destination of this result set.
     *
     * @var IntoKeyword|null
     */
    public $into;

    /**
     * Joins.
     *
     * @var JoinKeyword[]|null
     */
    public $join;

    /**
     * Unions.
     *
     * @var SelectStatement[]
     */
    public $union = [];

    /**
     * The end options of this query.
     *
     * @see SelectStatement::$statementEndOptions
     *
     * @var OptionsArray|null
     */
    public $endOptions;

    /**
     * Gets the clauses of this statement.
     *
     * @return array<string, array<int, int|string>>
     * @psalm-return array<string, array{non-empty-string, (1|2|3)}>
     */
    public function getClauses()
    {
        // This is a cheap fix for `SELECT` statements that contain `UNION`.
        // The `ORDER BY` and `LIMIT` clauses should be at the end of the
        // statement.
        if (! empty($this->union)) {
            $clauses = static::$clauses;
            unset($clauses['ORDER BY'], $clauses['LIMIT']);
            $clauses['ORDER BY'] = [
                'ORDER BY',
                3,
            ];
            $clauses['LIMIT'] = [
                'LIMIT',
                3,
            ];

            return $clauses;
        }

        return static::$clauses;
    }

    /**
     * Gets a list of all aliases and their original names.
     *
     * @param string $database the name of the database
     *
     * @return array<string, array<string, array<string, array<string, array<string, string>|string|null>>|null>>
     */
    public function getAliases(string $database): array
    {
        if (empty($this->expr) || empty($this->from)) {
            return [];
        }

        $retval = [];

        $tables = [];

        /**
         * Expressions that may contain aliases.
         * These are extracted from `FROM` and `JOIN` keywords.
         */
        $expressions = $this->from;

        // Adding expressions from JOIN.
        if (! empty($this->join)) {
            foreach ($this->join as $join) {
                $expressions[] = $join->expr;
            }
        }

        foreach ($expressions as $expr) {
            if (! isset($expr->table) || ($expr->table === '')) {
                continue;
            }

            $thisDb = isset($expr->database) && ($expr->database !== '') ?
                $expr->database : $database;

            if (! isset($retval[$thisDb])) {
                $retval[$thisDb] = [
                    'alias' => null,
                    'tables' => [],
                ];
            }

            if (! isset($retval[$thisDb]['tables'][$expr->table])) {
                $retval[$thisDb]['tables'][$expr->table] = [
                    'alias' => isset($expr->alias) && ($expr->alias !== '') ?
                        $expr->alias : null,
                    'columns' => [],
                ];
            }

            if (! isset($tables[$thisDb])) {
                $tables[$thisDb] = [];
            }

            $tables[$thisDb][$expr->alias] = $expr->table;
        }

        foreach ($this->expr as $expr) {
            if (! isset($expr->column, $expr->alias) || ($expr->column === '') || ($expr->alias === '')) {
                continue;
            }

            $thisDb = isset($expr->database) && ($expr->database !== '') ?
                $expr->database : $database;

            if (isset($expr->table) && ($expr->table !== '')) {
                $thisTable = $tables[$thisDb][$expr->table] ?? $expr->table;
                $retval[$thisDb]['tables'][$thisTable]['columns'][$expr->column] = $expr->alias;
            } else {
                foreach ($retval[$thisDb]['tables'] as &$table) {
                    $table['columns'][$expr->column] = $expr->alias;
                }
            }
        }

        return $retval;
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace PhpMyAdmin\SqlParser\Statements;
6
7		use PhpMyAdmin\SqlParser\Components\ArrayObj;
8		use PhpMyAdmin\SqlParser\Components\Condition;
9		use PhpMyAdmin\SqlParser\Components\Expression;
10		use PhpMyAdmin\SqlParser\Components\FunctionCall;
11		use PhpMyAdmin\SqlParser\Components\GroupKeyword;
12		use PhpMyAdmin\SqlParser\Components\IndexHint;
13		use PhpMyAdmin\SqlParser\Components\IntoKeyword;
14		use PhpMyAdmin\SqlParser\Components\JoinKeyword;
15		use PhpMyAdmin\SqlParser\Components\Limit;
16		use PhpMyAdmin\SqlParser\Components\OptionsArray;
17		use PhpMyAdmin\SqlParser\Components\OrderKeyword;
18		use PhpMyAdmin\SqlParser\Statement;
19
20		/**
21		* `SELECT` statement.
22		*
23		* SELECT
24		* [ALL \| DISTINCT \| DISTINCTROW ]
25		* [HIGH_PRIORITY]
26		* [MAX_STATEMENT_TIME = N]
27		* [STRAIGHT_JOIN]
28		* [SQL_SMALL_RESULT] [SQL_BIG_RESULT] [SQL_BUFFER_RESULT]
29		* [SQL_CACHE \| SQL_NO_CACHE] [SQL_CALC_FOUND_ROWS]
30		* select_expr [, select_expr ...]
31		* [FROM table_references
32		* [PARTITION partition_list]
33		* [WHERE where_condition]
34		* [GROUP BY {col_name \| expr \| position}
35		* [ASC \| DESC], ... [WITH ROLLUP]]
36		* [HAVING where_condition]
37		* [ORDER BY {col_name \| expr \| position}
38		* [ASC \| DESC], ...]
39		* [LIMIT {[offset,] row_count \| row_count OFFSET offset}]
40		* [PROCEDURE procedure_name(argument_list)]
41		* [INTO OUTFILE 'file_name'
42		* [CHARACTER SET charset_name]
43		* export_options
44		* \| INTO DUMPFILE 'file_name'
45		* \| INTO var_name [, var_name]]
46		* [FOR UPDATE \| LOCK IN SHARE MODE]]
47		*/
48		class SelectStatement extends Statement
49		{
50		/**
51		* Options for `SELECT` statements and their slot ID.
52		*
53		* @var array<string, int\|array<int, int\|string>>
54		* @psalm-var array<string, (positive-int\|array{positive-int, ('var'\|'var='\|'expr'\|'expr=')})>
55		*/
56		public static $statementOptions = [
57		'ALL' => 1,
58		'DISTINCT' => 1,
59		'DISTINCTROW' => 1,
60		'HIGH_PRIORITY' => 2,
61		'MAX_STATEMENT_TIME' => [
62		3,
63		'var=',
64		],
65		'STRAIGHT_JOIN' => 4,
66		'SQL_SMALL_RESULT' => 5,
67		'SQL_BIG_RESULT' => 6,
68		'SQL_BUFFER_RESULT' => 7,
69		'SQL_CACHE' => 8,
70		'SQL_NO_CACHE' => 8,
71		'SQL_CALC_FOUND_ROWS' => 9,
72		];
73
74		/**
75		* @var array<string, int\|array<int, int\|string>>
76		* @psalm-var array<string, (positive-int\|array{positive-int, ('var'\|'var='\|'expr'\|'expr=')})>
77		*/
78		public static $statementGroupOptions = ['WITH ROLLUP' => 1];
79
80		/**
81		* @var array<string, int\|array<int, int\|string>>
82		* @psalm-var array<string, (positive-int\|array{positive-int, ('var'\|'var='\|'expr'\|'expr=')})>
83		*/
84		public static $statementEndOptions = [
85		'FOR UPDATE' => 1,
86		'LOCK IN SHARE MODE' => 1,
87		];
88
89		/**
90		* The clauses of this statement, in order.
91		*
92		* @see Statement::$clauses
93		*
94		* @var array<string, array<int, int\|string>>
95		* @psalm-var array<string, array{non-empty-string, (1\|2\|3)}>
96		*/
97		public static $clauses = [
98		'SELECT' => [
99		'SELECT',
100		2,
101		],
102		// Used for options.
103		'_OPTIONS' => [
104		'_OPTIONS',
105		1,
106		],
107		// Used for selected expressions.
108		'_SELECT' => [
109		'SELECT',
110		1,
111		],
112		'INTO' => [
113		'INTO',
114		3,
115		],
116		'FROM' => [
117		'FROM',
118		3,
119		],
120		'FORCE' => [
121		'FORCE',
122		1,
123		],
124		'USE' => [
125		'USE',
126		1,
127		],
128		'IGNORE' => [
129		'IGNORE',
130		3,
131		],
132		'PARTITION' => [
133		'PARTITION',
134		3,
135		],
136
137		'JOIN' => [
138		'JOIN',
139		1,
140		],
141		'FULL JOIN' => [
142		'FULL JOIN',
143		1,
144		],
145		'INNER JOIN' => [
146		'INNER JOIN',
147		1,
148		],
149		'LEFT JOIN' => [
150		'LEFT JOIN',
151		1,
152		],
153		'LEFT OUTER JOIN' => [
154		'LEFT OUTER JOIN',
155		1,
156		],
157		'RIGHT JOIN' => [
158		'RIGHT JOIN',
159		1,
160		],
161		'RIGHT OUTER JOIN' => [
162		'RIGHT OUTER JOIN',
163		1,
164		],
165		'NATURAL JOIN' => [
166		'NATURAL JOIN',
167		1,
168		],
169		'NATURAL LEFT JOIN' => [
170		'NATURAL LEFT JOIN',
171		1,
172		],
173		'NATURAL RIGHT JOIN' => [
174		'NATURAL RIGHT JOIN',
175		1,
176		],
177		'NATURAL LEFT OUTER JOIN' => [
178		'NATURAL LEFT OUTER JOIN',
179		1,
180		],
181		'NATURAL RIGHT OUTER JOIN' => [
182		'NATURAL RIGHT JOIN',
183		1,
184		],
185		'WHERE' => [
186		'WHERE',
187		3,
188		],
189		'GROUP BY' => [
190		'GROUP BY',
191		3,
192		],
193		'_GROUP_OPTIONS' => [
194		'_GROUP_OPTIONS',
195		1,
196		],
197		'HAVING' => [
198		'HAVING',
199		3,
200		],
201		'ORDER BY' => [
202		'ORDER BY',
203		3,
204		],
205		'LIMIT' => [
206		'LIMIT',
207		3,
208		],
209		'PROCEDURE' => [
210		'PROCEDURE',
211		3,
212		],
213		'UNION' => [
214		'UNION',
215		1,
216		],
217		'EXCEPT' => [
218		'EXCEPT',
219		1,
220		],
221		'INTERSECT' => [
222		'INTERSECT',
223		1,
224		],
225		'_END_OPTIONS' => [
226		'_END_OPTIONS',
227		1,
228		],
229		// These are available only when `UNION` is present.
230		// 'ORDER BY' => ['ORDER BY', 3],
231		// 'LIMIT' => ['LIMIT', 3],
232		];
233
234		/**
235		* Expressions that are being selected by this statement.
236		*
237		* @var Expression[]
238		*/
239		public $expr = [];
240
241		/**
242		* Tables used as sources for this statement.
243		*
244		* @var Expression[]
245		*/
246		public $from = [];
247
248		/**
249		* Index hints
250		*
251		* @var IndexHint[]\|null
252		*/
253		public $indexHints;
254
255		/**
256		* Partitions used as source for this statement.
257		*
258		* @var ArrayObj\|null
259		*/
260		public $partition;
261
262		/**
263		* Conditions used for filtering each row of the result set.
264		*
265		* @var Condition[]\|null
266		*/
267		public $where;
268
269		/**
270		* Conditions used for grouping the result set.
271		*
272		* @var GroupKeyword[]\|null
273		*/
274		public $group;
275
276		/**
277		* List of options available for the GROUP BY component.
278		*
279		* @var OptionsArray\|null
280		*/
281		public $groupOptions;
282
283		/**
284		* Conditions used for filtering the result set.
285		*
286		* @var Condition[]\|null
287		*/
288		public $having;
289
290		/**
291		* Specifies the order of the rows in the result set.
292		*
293		* @var OrderKeyword[]\|null
294		*/
295		public $order;
296
297		/**
298		* Conditions used for limiting the size of the result set.
299		*
300		* @var Limit\|null
301		*/
302		public $limit;
303
304		/**
305		* Procedure that should process the data in the result set.
306		*
307		* @var FunctionCall\|null
308		*/
309		public $procedure;
310
311		/**
312		* Destination of this result set.
313		*
314		* @var IntoKeyword\|null
315		*/
316		public $into;
317
318		/**
319		* Joins.
320		*
321		* @var JoinKeyword[]\|null
322		*/
323		public $join;
324
325		/**
326		* Unions.
327		*
328		* @var SelectStatement[]
329		*/
330		public $union = [];
331
332		/**
333		* The end options of this query.
334		*
335		* @see SelectStatement::$statementEndOptions
336		*
337		* @var OptionsArray\|null
338		*/
339		public $endOptions;
340
341		/**
342		* Gets the clauses of this statement.
343		*
344		* @return array<string, array<int, int\|string>>
345		* @psalm-return array<string, array{non-empty-string, (1\|2\|3)}>
346		*/
347	350	public function getClauses()
348		{
349		// This is a cheap fix for `SELECT` statements that contain `UNION`.
350		// The `ORDER BY` and `LIMIT` clauses should be at the end of the
351		// statement.
352	350	if (! empty($this->union)) {
353	10	$clauses = static::$clauses;
354	10	unset($clauses['ORDER BY'], $clauses['LIMIT']);
355	10	$clauses['ORDER BY'] = [
356	10	'ORDER BY',
357	10	3,
358	10	];
359	10	$clauses['LIMIT'] = [
360	10	'LIMIT',
361	10	3,
362	10	];
363
364	10	return $clauses;
365		}
366
367	350	return static::$clauses;
368		}
369
370		/**
371		* Gets a list of all aliases and their original names.
372		*
373		* @param string $database the name of the database
374		*
375		* @return array<string, array<string, array<string, array<string, array<string, string>\|string\|null>>\|null>>
376		*/
377	14	public function getAliases(string $database): array
378		{
379	14	if (empty($this->expr) \|\| empty($this->from)) {
380	2	return [];
381		}
382
383	12	$retval = [];
384
385	12	$tables = [];
386
387		/**
388		* Expressions that may contain aliases.
389		* These are extracted from `FROM` and `JOIN` keywords.
390		*/
391	12	$expressions = $this->from;
392
393		// Adding expressions from JOIN.
394	12	if (! empty($this->join)) {
395	2	foreach ($this->join as $join) {
396	2	$expressions[] = $join->expr;
397		}
398		}
399
400	12	foreach ($expressions as $expr) {
401	12	if (! isset($expr->table) \|\| ($expr->table === '')) {
402	4	continue;
403		}
404
405	8	$thisDb = isset($expr->database) && ($expr->database !== '') ?
406	8	$expr->database : $database;
407
408	8	if (! isset($retval[$thisDb])) {
409	8	$retval[$thisDb] = [
410	8	'alias' => null,
411	8	'tables' => [],
412	8	];
413		}
414
415	8	if (! isset($retval[$thisDb]['tables'][$expr->table])) {
416	8	$retval[$thisDb]['tables'][$expr->table] = [
417	8	'alias' => isset($expr->alias) && ($expr->alias !== '') ?
418	6	$expr->alias : null,
419	8	'columns' => [],
420	8	];
421		}
422
423	8	if (! isset($tables[$thisDb])) {
424	8	$tables[$thisDb] = [];
425		}
426
427	8	$tables[$thisDb][$expr->alias] = $expr->table;
428		}
429
430	12	foreach ($this->expr as $expr) {
431	12	if (! isset($expr->column, $expr->alias) \|\| ($expr->column === '') \|\| ($expr->alias === '')) {
432	8	continue;
433		}
434
435	6	$thisDb = isset($expr->database) && ($expr->database !== '') ?
436	6	$expr->database : $database;
437
438	6	if (isset($expr->table) && ($expr->table !== '')) {
439	4	$thisTable = $tables[$thisDb][$expr->table] ?? $expr->table;
440	4	$retval[$thisDb]['tables'][$thisTable]['columns'][$expr->column] = $expr->alias;
441		} else {
442	6	foreach ($retval[$thisDb]['tables'] as &$table) {
443	6	$table['columns'][$expr->column] = $expr->alias;
444		}
445		}
446		}
447
448	12	return $retval;
449		}
450		}
451

phpmyadmin / sql-parser

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SelectStatement::getAliases() F

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