index, view

index.sql

@@ -0,0 +1,25 @@
+USE Study
+GO
+
+-- 고유 인덱스
+CREATE UNIQUE INDEX idx_dname_unique
+ON DEPARTMENT(DNAME)
+
+-- 비고유 인덱스
+CREATE INDEX idx_loc
+ON DEPARTMENT(LOC)
+
+-- 결합인덱스
+CREATE INDEX idx_dno_salary
+ON EMPLOYEE(DNO, SALARY)
+
+-- DESCENDING INDEX
+CREATE INDEX idx_dno_asc_salary_desc
+ON EMPLOYEE(DNO, SALARY DESC)
+
+-- 실행계획
+SELECT * FROM EMPLOYEE WHERE ENAME = 'e1'
+
+CREATE INDEX idx_ename ON EMPLOYEE(ENAME)
+
+SELECT * FROM EMPLOYEE WITH(INDEX = idx_ename) WHERE ENAME = 'e1' -- 강제 인덱스 참조