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a6cf8b34a8
The reason for crash is that natural_sort_key(release_lock('a')) would
evaluate release_lock() twice, once in Item::is_null() and another time
in Item::val_str(). Second time it returns NULL, since lock was already
released.
Fixed to prevent double evaluation.
102 lines
2.9 KiB
Text
102 lines
2.9 KiB
Text
--source include/have_sequence.inc
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SET NAMES utf8mb4;
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SELECT NATURAL_SORT_KEY(NULL);
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#Test that max packet overflow produces NULL plus warning
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SELECT NATURAL_SORT_KEY(repeat('a1',@@max_allowed_packet/2-1));
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SELECT NATURAL_SORT_KEY(repeat('1',@@max_allowed_packet-1));
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#Test with virtual
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CREATE TABLE t1(
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c VARCHAR(30) CHARACTER SET latin1 COLLATE latin1_bin,
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k VARCHAR(60) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci AS (NATURAL_SORT_KEY(CONVERT(c USING utf8mb4))) VIRTUAL INVISIBLE);
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INSERT INTO t1 values
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('A1'),('a1'),('A100'),('a100'),('A2'),('ä2'),('a2'),('A99'),
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('äb'),('B1'),('B100'),('B9'),('C'),('100');
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-- echo #Natural sort order.
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# We sort by 2 colums, for stable sort,as we do not currenly have a case and accent insensitive Unicode collation.
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SELECT c FROM t1 ORDER BY k,c;
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-- echo #Unnatural but unicode aware) sort order
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SELECT c FROM t1 ORDER BY CONVERT(c USING utf8mb4) COLLATE utf8mb4_unicode_ci,c;
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# CREATE TABLE AS SELECT, to see that length of the column is correct.
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CREATE TABLE t2 AS SELECT c, NATURAL_SORT_KEY(c) FROM t1 WHERE 0;
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SHOW CREATE TABLE t2;
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DROP TABLE t1,t2;
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#Virtual STORED is temporarily disabled
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--error ER_GENERATED_COLUMN_FUNCTION_IS_NOT_ALLOWED
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CREATE TABLE t1(c VARCHAR(1), k VARCHAR(2) AS (NATURAL_SORT_KEY(c)) STORED);
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#Show encoding of numbers.
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SELECT RPAD(val,28,' ') value , RPAD(NATURAL_SORT_KEY(val),36,' ') sortkey , LENGTH(NATURAL_SORT_KEY(val)) - LENGTH(val) encoding_overhead
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FROM
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(
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SELECT '0' val
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UNION SELECT seq FROM seq_1_to_9
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UNION SELECT CONCAT('1',repeat('0',seq)) FROM seq_1_to_27
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) AS numbers ORDER BY sortkey;
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# leading zeros ignored
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SELECT natural_sort_key('1') = natural_sort_key('0001');
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SELECT natural_sort_key('1.1') = natural_sort_key('1.00001');
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# Some examples from https://github.com/sourcefrog/natsort/
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# words
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SELECT RPAD(val,20,' ') value, NATURAL_SORT_KEY(val) FROM
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(SELECT '' val WHERE 0 UNION VALUES
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('fred'),
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('pic2'),
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('pic100a'),
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('pic120'),
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('pic121'),
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('jane'),
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('tom'),
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('pic02a'),
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('pic3'),
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('pic4'),
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('1-20'),
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('pic100'),
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('pic02000'),
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('10-20'),
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('1-02'),
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('1-2'),
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('pic01'),
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('pic02'),
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('pic 6'),
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('pic 7'),
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('pic 5'),
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('pic05'),
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('pic 5 '),
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('pic 5 something'),
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('pic 4 else'),
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('2000-1-10'),
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('1999-12-25'),
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('1999-3-3'),
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('2000-3-23'),
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('2000-1-2'),
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('100.200.300.400'),
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('100.50.60.70'),
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('100.8.9.0'),
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('a1b1'),
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('a01b2'),
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('a1b2'),
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('a01b3')
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)AS data ORDER BY 2,1;
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# MDEV-27686 (null value indicator not always reset)
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create table t (a varchar(8), b varchar(8) as (natural_sort_key(a)));
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insert into t (a) values ('a2'),(NULL),('a11');
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select * from t order by b;
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select a, b from t order by b;
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drop table t;
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# MDEV-26796 Natural sort does not work for utf32/utf16/ucs2
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select natural_sort_key(_utf16 0x0031),natural_sort_key(_ucs2 0x0031), natural_sort_key(_utf32 0x00000031);
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# MDEV-26806 Server crash in Charset::charset / Item_func_natural_sort_key::val_str
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select get_lock('a', 0);
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select natural_sort_key(release_lock('a'));
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