I have two queries.
First query returning 11 rows and second query returning 6 rows when i use the minus operator on them it should return 5 rows as far as my under
MySQL does not support EXCEPT or MINUS.
EXCEPT
MINUS
You can use NOT EXISTS , OUTER JOIN ... NULL or NOT IN (be careful of NULLs) to do an anti semi join.
NOT EXISTS
OUTER JOIN ... NULL
NOT IN
See examples and performance comparisons here