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select *from Ilaclar
insert into Ilaclar (Barkod,IlacAdi) values (8888,'Levortiron 50 mg')
select COUNT(Barkod) from Ilaclar
select COUNT(Miktar) from Ilaclar
select COUNT(*) from Ilaclar
select distinct(IlacAdi) from Ilaclar
select distinct(Miktar) from Ilaclar
select ISNULL(Miktar,9999) from Ilaclar -- tabloda kalıcı değişiklik yapmaz.
select coalesce(Miktar,9999) from Ilaclar -- isnull ile aynı çalışır
select nullif(Miktar,500) from Ilaclar -- belirtilen değerleri NULL olarak listeler
select GETDATE() --sistemin güncel tarihini verir
select datepart(day,RTarih) from Receteler
select RTarih, DATEPART(week,Rtarih) from Receteler -- yılın kaçıncı haftası
select RTarih, DATEPART(month,Rtarih) from Receteler -- haftanın kaçıncı günü (başlangıç pazar)
select RTarih, DATEPART(month,Rtarih) from Receteler
select RTarih, DATEPART(year,Rtarih) from Receteler
select RTarih, DATEPART(QUARTER,Rtarih) from Receteler --yılın kaçıncı çeyreğinde olduğu bilgisini verir
select *from Calisanlar
-- personain kaç yıldır çalıştığını veren sorguyu yazınız
select AdSoyad , DATEPART(year, getdate())-DATEPART(year,IGTarihi) as 'Çalıştığı yıl' from Calisanlar
select * from Receteler where 2=DATEPART(weekday,RTarih)
select adsoyad, DATEDIFF(YEAR,IGTarihi,getdate()) from Calisanlar --kaç yıldır çalıştığını verir
--sayı yuvarlama fonkları
--celling: yukarı yuvarlar
--floor: aşağı yuvarlar
--round: belirttiği kadar küsürat bırakır
select *from Receteler
select tutar, FLOOR(tutar)as 'floor', CEILING(tutar)as 'ceılıng', ROUND(tutar,1) as 'round' from Receteler
--replace: değer değiştirmeye yarar. Tabloda kalıcı değişiklik yapmaz
select *from Musteriler
select Adres, REPLACE(Adres, 'adres1','Kastamonu')+REPLACE(Adres, 'adres2','urfa') from Musteriler
select Adres, REPLACE(Replace(Adres,'Adres 2','Urfa'),'Adres1','Kastamonu') from Musteriler
-- reverse Komutu: ifadeyi terster yazdırır
select Adres, REVERSE(Adres) from Musteriler
--left,right,substring
select Adsoyad, LEFT(Adsoyad,3), Right(Adsoyad,3), SUBSTRING(Adsoyad,3,4) from Calisanlar
-- len fonk: alandaki değerin uzunluğunu verir. boşlujklarıda da dahil eder
select Adsoyad, LEN(adsoyad) from Calisanlar
select Adsoyad, CHARINDEX('a',adsoyad) from Calisanlar
select UPPER(AdSoyad), LOWER(AdSoyad) from Calisanlar
select *from Ilaclar
select IlacAdi, Miktar*Fiyat as 'tutar' from Ilaclar
select Fiyat+YasGrup from Ilaclar
select CAST(fiyat as nvarchar)+YasGrup from Ilaclar
--cast: veri tip donusumu yapar
--convert: " " " " " "
select *from Musteriler
select
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