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Euler – 8

16 November 2011 4 yorum

Euler serisinin sekizinci yazısında, Project Euler’in 8. sorusunu çözeceğiz;

Orjinal Soru; Find the greatest product of five consecutive digits in the 1000-digit number.

7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450

Türkçesi; 1000 haneli rakamdan yan yana gelen en büyük 5 haneli rakamı bulunuz.

7316717653133062491922511967442657474235534919493496983520312774506326239578318016984801869478851843858615607891129494954595017379583319528532088055111254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450

Önce siz çözmeyi deneyin, çözemezseniz Devamını oku…

Sql Server CSV (Comma Seperated Value) çıktı üretme

27 November 2009 2 yorum

Özellikle katalog tablolarının CSV çıktılarına sıklıkla ihtiyaç duyarız. Aşağıdaki sql script’ini kullanarak, siz de tablolarınızdan CSV çıktı alabilirsiniz.

Öncelikle tablomuzun orjinal haline bakalım;

SELECT Name
FROM HumanResources.Shift WITH (NOLOCK)

sql-csv-output_1

Şimdi öyle bir sql sorgusu yazacağız ki, çıktımız şu şekilde olacak;

Day, Evening, Night

SELECT
	SUBSTRING((
		SELECT ', ' + Name
		FROM HumanResources.Shift WITH (NOLOCK)
		FOR XML PATH('')
	), 3, 8000) AS CSV

Sorguyu FOR XML anahtar kelimeleri ile çalıştırdığımıza ve PATH olarak ” (boş string) verdiğimize dikkat edin.

SELECT ', ' + Name
FROM HumanResources.Shift WITH (NOLOCK)
FOR XML PATH('')

Böylece aşağıdaki sonucu elde etmiş olduk;

sql-csv-output_2

Son olarak, sql sorgusunu SUBSTRING fonksiyonu içerisine koyduk, böylece baştaki virgül ve boşluk karakterlerinden (“, “) kurtulmuş olduk.

sql-csv-output_3