नीचे एक टी-एसक्यूएल समाधान है जो एक अस्थायी तालिका में पहले मिलियन नंबर लिखता है। मेरी मशीन पर लगभग 84 ms लगते हैं। मुख्य अड़चनें NESTING_TRANSACTION_FULL कुंडी पर प्रतीक्षा कर रही हैं और CXPACKET
दोनों, मुझे नहीं पता कि कैसे बदलने के अलावा अन्य को संबोधित करना है MAXDOP
। मैं एक क्वेरी योजना चाहता था जो समानांतर नेस्टेड लूप का लाभ उठा सकती है और आधारित समानता की मांग कर सकती है, जो कि मैं प्राप्त करने में कामयाब रहा:
कोड थोड़ा लंबा है। संक्षेप में, मैं 246 पंक्तियों के दो व्युत्पन्न तालिकाओं और कुल 66666 पंक्तियों के लिए 271 पंक्तियों के साथ जुड़ता हूं। उन पंक्तियों को एक 15 पंक्ति व्युत्पन्न तालिका में शामिल किया गया है जो इस तथ्य का लाभ उठाती है कि FIZZBUZZ पैटर्न हर 15 पंक्तियों के लिए दोहराया जाता है। अंतिम दस पंक्तियों को एक के साथ जोड़ा जाता है UNION ALL
।
DROP TABLE IF EXISTS #t;
SELECT res.fizzbuzz INTO #t
FROM
(
VALUES
(0),
(15),
(30),
(45),
(60),
(75),
(90),
(105),
(120),
(135),
(150),
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(540),
(555),
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(600),
(615),
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(645),
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(675),
(690),
(705),
(720),
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(765),
(780),
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(825),
(840),
(855),
(870),
(885),
(900),
(915),
(930),
(945),
(960),
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(1020),
(1035),
(1050),
(1065),
(1080),
(1095),
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(3540),
(3555),
(3570),
(3585),
(3600),
(3615),
(3630),
(3645),
(3660),
(3675)
) v246 (n)
CROSS JOIN
(
VALUES
(0),
(15),
(30),
(45),
(60),
(75),
(90),
(105),
(120),
(135),
(150),
(165),
(180),
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(225),
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(390),
(405),
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(735),
(750),
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(825),
(840),
(855),
(870),
(885),
(900),
(915),
(930),
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(960),
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(1080),
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(1500),
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(2280),
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(2325),
(2340),
(2355),
(2370),
(2385),
(2400),
(2415),
(2430),
(2445),
(2460),
(2475),
(2490),
(2505),
(2520),
(2535),
(2550),
(2565),
(2580),
(2595),
(2610),
(2625),
(2640),
(2655),
(2670),
(2685),
(2700),
(2715),
(2730),
(2745),
(2760),
(2775),
(2790),
(2805),
(2820),
(2835),
(2850),
(2865),
(2880),
(2895),
(2910),
(2925),
(2940),
(2955),
(2970),
(2985),
(3000),
(3015),
(3030),
(3045),
(3060),
(3075),
(3090),
(3105),
(3120),
(3135),
(3150),
(3165),
(3180),
(3195),
(3210),
(3225),
(3240),
(3255),
(3270),
(3285),
(3300),
(3315),
(3330),
(3345),
(3360),
(3375),
(3390),
(3405),
(3420),
(3435),
(3450),
(3465),
(3480),
(3495),
(3510),
(3525),
(3540),
(3555),
(3570),
(3585),
(3600),
(3615),
(3630),
(3645),
(3660),
(3675),
(3690),
(3705),
(3720),
(3735),
(3750),
(3765),
(3780),
(3795),
(3810),
(3825),
(3840),
(3855),
(3870),
(3885),
(3900),
(3915),
(3930),
(3945),
(3960),
(3975),
(3990),
(4005),
(4020),
(4035),
(4050)
) v271 (n)
CROSS APPLY
(
VALUES
(CAST(v246.n * 271 + v271.n + 1 AS CHAR(8))),
(CAST(v246.n * 271 + v271.n + 2 AS CHAR(8))),
(CAST('FIZZ' AS CHAR(8))),
(CAST(v246.n * 271 + v271.n + 4 AS CHAR(8))),
(CAST('BUZZ' AS CHAR(8))),
(CAST('FIZZ' AS CHAR(8))),
(CAST(v246.n * 271 + v271.n + 7 AS CHAR(8))),
(CAST(v246.n * 271 + v271.n + 8 AS CHAR(8))),
(CAST('FIZZ' AS CHAR(8))),
(CAST('BUZZ' AS CHAR(8))),
(CAST(v246.n * 271 + v271.n + 11 AS CHAR(8))),
(CAST('FIZZ' AS CHAR(8))),
(CAST(v246.n * 271 + v271.n + 13 AS CHAR(8))),
(CAST(v246.n * 271 + v271.n + 14 AS CHAR(8))),
(CAST('FIZZBUZZ' AS CHAR(8)))
) res (fizzbuzz)
UNION ALL
SELECT v.fizzbuzz
FROM (
VALUES
('999991'),
('999992'),
('FIZZ'),
('999994'),
('BUZZ'),
('FIZZ'),
('999997'),
('999998'),
('FIZZ'),
('BUZZ')
) v (fizzbuzz)
OPTION (MAXDOP 6, NO_PERFORMANCE_SPOOL);