How to create an empty VIEW in MySQL?

To create an empty view in MySQL, following is the syntax −

create or replace view yourViewName as
select yourValue AS yourColumnName,
yourValue AS yourColumnName2,
.
.
N
from dual
where false;

Let us implement the above syntax in order to create an empty view in MySQL −

mysql> create or replace view empty_view as
   select "John Smith" AS ClientName,
   "US" AS ClientCountryName,
   false AS isMarried
   from dual
   where false;
Query OK, 0 rows affected (0.20 sec)

Let us check the description of the view −

mysql> desc empty_view;

This will produce the following output -

+-------------------+-------------+------+-----+---------+-------+
| Field             | Type        | Null | Key | Default | Extra |
+-------------------+-------------+------+-----+---------+-------+
| ClientName        | varchar(10) | NO   |     |         |       |
| ClientCountryName | varchar(2)  | NO   |     |         |       |
| isMarried         | int(1)      | NO   |     | 0       |       |
+-------------------+-------------+------+-----+---------+-------+
3 rows in set (0.00 sec)

Let us check the view is empty or not −

mysql> select *from empty_view;
Empty set (0.00 sec)

AmitDiwan

Updated on: 22-Aug-2019

513 Views

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