MySQL except clause doesnt work -


given customer table , loan table, wish find customers have not taken loan. schema definition follows:

mysql> select  * customer; +---------------+-----------------+---------------+ | customer_name | customer_street | customer_city | +---------------+-----------------+---------------+ | adams         | spring          | pittsfield    | | brooks        | senator         | brooklyn      | | curry         | north           | rye           | | glenn         | sand hill       | woodside      | | green         | walnut          | stamford      | | hayes         | main            | harrison      | | johnson       | alma            | palo alto     | | jones         | main            | harrison      | | lindsay       | park            | pittsfield    | | smith         | north           | rye           | | turner        | putnam          | stamford      | | williams      | nassau          | princeton     | +---------------+-----------------+---------------+ 12 rows in set (0.00 sec)  mysql> select  * borrower; +---------------+---------+ | customer_name | loan_id | +---------------+---------+ | adams         | l16     | | curry         | l93     | | hayes         | l15     | | jackson       | l14     | | jones         | l17     | | smith         | l11     | | smith         | l23     | | williams      | l17     | | adams         | l19     | | adams         | l15     | | jones         | l15     | | williams      | l23     | +---------------+---------+ 12 rows in set (0.00 sec)

now, tried query : select customer_name customer except select customer_name borrower;

but error:

error 1064 (42000): have error in sql syntax; check manual corresponds mysql server version right syntax use near 'select customer_name borrower' @ line 1

i tried difference same kind of error pops out. union works well.

mysql> select  customer_name customer union select customer_name borrower; +---------------+ | customer_name | +---------------+ | adams         | | brooks        | | curry         | | glenn         | | green         | | hayes         | | johnson       | | jones         | | lindsay       | | smith         | | turner        | | williams      | | jackson       | +---------------+ 13 rows in set (0.00 sec)

any suggestions might wrong?

can try: 

select customer_name customer customer_name not in (select customer_name borrower);

so select customer_name customer haven't take loan.

i haven't check maybe easier way.


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