/SQL/Mysql delete if not in another table

Mysql delete if not in another table

Mysql delete if not in another table

DELETE b FROM BLOB b 
  LEFT JOIN FILES f ON f.id = b.fileid 
      WHERE f.id IS NULL

0

Source: stackoverflow.com

Mysql delete if not in another table

DELETE FROM BLOB
 WHERE fileid NOT IN (SELECT f.id 
                        FROM FILES f)

0

Source: stackoverflow.com

Mysql delete if not in another table

DELETE FROM BLOB 
 WHERE NOT EXISTS(SELECT NULL
                    FROM FILES f
                   WHERE f.id = fileid)

0

Source: stackoverflow.com

Similar codes

1 vote373 views2 answers
Get table column names sql laravel
SQL
0 vote366 views1 answer
Fill up postgres db
SQL
4 votes386 views2 answers
Mysql delete user if exists
SQL
3 votes336 views1 answer
Pl sql check if variable is empty
SQL
0 vote378 views1 answer
Delete * from where id = 1;
SQL
3 votes360 views2 answers
To_char oracle
SQL
6 votes377 views1 answer
Oracle rank
SQL
3 votes450 views4 answers
Sql interview questions
SQL
0 vote386 views1 answer
Tablas bootstrap responsive sql server para datos vivos
SQL
0 vote354 views1 answer
How to change the field size of an existing column
SQL

Share