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UNION/UNION ALL INTERSECT MINUS

union

emp_ename_A_MSQL> select * from emp where ename like '%A%';2? union3? select * from emp where ename like '%M%';

union all

emp_ename_A_MSQL> select * from emp where ename like '%A%';2? union all3? select * from emp where ename like '%M%';

intersect

emp_ename_A_MSQL> select * from emp where ename like '%A%';intersectselect * from emp where ename like '%M%';

minus

emp_sal_700_1200SQL> select * from emp where sal between 700 and 1300;minusselect * from emp where sal between 1200 and 1400;

ArrayList

List: addAll(Collection extends E> c) : Iterator...

:Intersect :Union :Except , , , , , }; , , , ,,, }; var C= A.Intersect(B); // { 3, 4, 5, 6 }...

python

#3 >>> ret3 = list(set(a) ^ set(b)) # >>> ret4=list(s...

java

List, ... List list1 = new ArrayList...

javascript list

package com; import java.util.ArrayList; import java.util.Iterator; import...

Python

s1 = set(open('a.txt','r').readlines()) s2 = set(open('b.txt','r')...

oracle

aaarticlea/png;base64,iVBORw0KGgoAAAANSUhEUgAAAY4AAACNCAIAAAAvhQoxAAAbmklEQVR4nO1dX6jc1pn/0lBH4KVV6J...

MR - 3 -

A_B, ... A_B. ... : key_value. ...

List_set

retainAll_removeAll_addAllset.listretainAllremoveAlladdAllset.listaddAll: set : listpublic...

[ bash ]

Bash shell, ...Ctrl + a :Ctrl + e :Ctrl + f :

DOM

jsDOM, ... Angular React DOM, ...demo

Spring MVC

Spring.Mvc, .....org.springframework.web.servlet.handler.SimpleMappingExceptionResolv...

ng

...

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