SQL with subquery WHERE condition is empty - mysql

Question

I am hoping someone can advise on what is wrong.
SELECT sms.id FROM sms INNER JOIN screens ON sms.screen_id = screens.id WHERE screens.experience_id = '108';
AND
SELECT id FROM sms
WHERE screen_id IN (SELECT id FROM screens WHERE experience_id = 108 )
... returns an empty row, but there are rows that should be returned.
To clarify...
SELECT id FROM sms
... returns all rows in SMS
SELECT id FROM sms
WHERE screen_id IN (SELECT id FROM screens)
... returns all rows in SMS and
SELECT id FROM screens WHERE experience_id = 108
... returns all rows from screens with that id.
SQL to make the tables...
CREATE TABLE IF NOT EXISTS `screens` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(32) NOT NULL,
`device_id` int(11) NOT NULL,
`type` varchar(32) NOT NULL,
`description` text NOT NULL,
`position` int(11) NOT NULL,
`experience_id` int(11) NOT NULL,
`image` varchar(512) NOT NULL,
`url` varchar(512) NOT NULL,
`persona_id` int(11) NOT NULL,
`socialPost` text NOT NULL,
`socialLinkHeadline` varchar(512) NOT NULL,
`socialLinkDescription` text NOT NULL,
`socialLink` varchar(512) NOT NULL,
`socialAction` varchar(64) NOT NULL,
`bgcolor` varchar(16) NOT NULL DEFAULT '#fff',
`created` datetime NOT NULL,
`modified` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
`user_id` int(11) NOT NULL DEFAULT '1',
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=472 ;
CREATE TABLE IF NOT EXISTS `sms` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`source` varchar(16) NOT NULL,
`content` text NOT NULL,
`position` int(11) NOT NULL,
`screen_id` int(11) NOT NULL,
`user_id` int(11) NOT NULL,
`created` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=20 ;
A GIF of me running these queries to verify is here: https://ibb.co/gzPFsd
I am at a loss and can see that people can't replicate, thanks!

Answer 1

I don't get what's wrong in your query but you can do that using join as well.
SELECT sms.id FROM sms INNER JOIN screens ON sms.screen_id = screens.id WHERE screens.experience_id = '108';

Answer 2

Your query works fine , here's the proof.
DROP TABLE IF EXISTS SMS,SCREENS;
CREATE TABLE SMS(ID INT, SCREEN_ID INT);
CREATE TABLE SCREENS(ID INT, EXPERIENCE_ID INT);
INSERT INTO SMS VALUES (1,1),(2,2);
INSERT INTO SCREENS VALUES(1,108),(2,100);
SELECT id FROM sms
WHERE screen_id IN (SELECT id FROM screens WHERE experience_id = 108 );
+------+
| id |
+------+
| 1 |
+------+
1 row in set (0.00 sec)
Assuming that my data model and yours are the same.