how to select all data whose input array found and not found in mysql

Question

    CREATE TABLE emp (
  empno decimal(4,0) NOT NULL,
  ename varchar(10) default NULL,
  job varchar(9) default NULL,
  mgr decimal(4,0) default NULL,
  hiredate da         


        

Answer 1

A helper table is used for the left join / right join concept but it was not quite as simple.

From my answer here (Edit3) Here:

CREATE TABLE 4kTable
(   -- a helper table of about 4k consecutive ints
    id int auto_increment primary key,
    thing int null
)engine=MyISAM;

insert 4kTable (thing) values (null),(null),(null),(null),(null),(null),(null),(null),(null);
insert 4kTable (thing) select thing from 4kTable;
insert 4kTable (thing) select thing from 4kTable;
insert 4kTable (thing) select thing from 4kTable;
insert 4kTable (thing) select thing from 4kTable;
insert 4kTable (thing) select thing from 4kTable;
insert 4kTable (thing) select thing from 4kTable;
insert 4kTable (thing) select thing from 4kTable;
insert 4kTable (thing) select thing from 4kTable;
insert 4kTable (thing) select thing from 4kTable;
-- verify:
-- select min(id),max(id),count(*) from 4kTable;
-- 1 4608 4608

ALTER TABLE 4kTable ENGINE = InnoDB; -- *********** it is now InnoDB

From a modified answer from User fthiella ... that post Here

select SUBSTRING_INDEX(SUBSTRING_INDEX(@str, ',', 4k.id), ',', -1) name 
from 
  4kTable 4k  
  cross join (select @str:='SMITH,WARD,KING,TOM') vars 
  on CHAR_LENGTH(@str) 
     -CHAR_LENGTH(REPLACE(@str, ',', ''))>=4k.id-1; 
+-------+
| name  |
+-------+
| SMITH |
| WARD  |
| KING  |
| TOM   |
+-------+

So the above is the generic form of plopping a csv into a query and generating a table out of it.

Now make a derived table (d) out of the above, combine via RIGHT JOIN with op code (that schema was shown in op code)

select d.name as rtable_name,e.empno,e.ename,e.job,e.mgr,e.hiredate,e.sal,e.comm,e.deptno 
from emp e 
right join 
(   select SUBSTRING_INDEX(SUBSTRING_INDEX(@str, ',', 4k.id), ',', -1) name  
    from 4kTable 4k  
    cross join (select @str:='SMITH,WARD,KING,TOM') vars 
    on CHAR_LENGTH(@str) 
        -CHAR_LENGTH(REPLACE(@str, ',', ''))>=4k.id-1 
) d 
on d.name=e.ename; 

Results:

+-------------+-------+-------+-----------+------+------------+---------+--------+--------+
| rtable_name | empno | ename | job       | mgr  | hiredate   | sal     | comm   | deptno |
+-------------+-------+-------+-----------+------+------------+---------+--------+--------+
| SMITH       |  7369 | SMITH | CLERK     | 7902 | 1980-12-17 |  800.00 |   NULL |     20 |
| WARD        |  7521 | WARD  | SALESMAN  | 7698 | 1981-02-22 | 1250.00 | 500.00 |     30 |
| KING        |  7839 | KING  | PRESIDENT | NULL | 1981-11-17 | 5000.00 |   NULL |     10 |
| TOM         |  NULL | NULL  | NULL      | NULL | NULL       |    NULL |   NULL |   NULL |
+-------------+-------+-------+-----------+------+------------+---------+--------+--------+