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-- Veritabanındaki Tabloların Listesi
show tables;

-- Bir Tablonun Yapısı
describe users;

insert into users values
(0, 'Emir', 'Civas', '[email protected]', 1984);

insert into users values
(0, 'Efe', 'Selim', '[email protected]', 1983);

insert into users values
(0, 'Onur', 'Rokovet', '[email protected]', 1985);

select * from users;

-- LIKE (VAL) String Kiyaslama
-- A = B A Stringi B'ye Esitse
-- A LIKE '%B%' A Stringinin Herhangi Bir
-- Yerinde B Geciyorsa
-- A LIKE 'B%' A, B ile Basliyorsa
-- A LIKE '%B' A, B İle Bitiyorsa
-- A LIKE 'C____X_N' A, 8 Harfliyse İlk Harfi C,
-- SON Harfi N, 6. Harfi X İse

-- GMAIL KULLANAN KISILERIN BILGILERI
select * from users where email like '%@gmail%';
-- GMAIL KULLANMAYAN KISILERIN BILGILERI
select * from users where email not like '%@gmail%';

-- 1980'den Kucuk, Adi 4 Harf Olan Kişiler
select * from users where fn like '____' AND
byear >= 1980;

-- SIRALAMA ORDER BY KOLON ASC | DESC
-- Kisileri Dogum Tarihine Gore Buyukten
-- Kucuge Sirala
select * from users order by byear asc;

-- RANDOM SIRALAMA
select * from users order by RAND();

-- LIMIT X Ilk Bastan X KAYIT
-- LIMIT X,Y X'ten Itibaren Y KAYIT
select * from users limit 1;
select * from users limit 1,1;
select * from users limit 2,1;

-- KAYITLI KULLANICILARDAN RANDOM 5 TANESI
select * from users order by RAND() limit 5;

-- COUNT() : SAYI
-- GMAIL KULLANAN KAC KISI VAR
select count(*) as 'Kullanıcı Sayısı'
from users where email like '%@gmail%';

-- SUM() : TOPLAM
-- Users Tablosundaki ID'lerin TOplamı
select sum(id) as 'IDler Toplamı'
from users;

-- AVG() : ORTALAMA
-- Users tablosundaki id'lerin ortalamasi
select avg(id) as 'ortalama',
min(id) as 'en kucuk id', max(id) as
'en buyuk id' from users;
     
 
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