(+) syntax for outer joins in mysql [duplicate]

问题

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Closed 8 years ago.

Possible Duplicates:
Oracle “(+)” Operator
Oracle (Old?) Joins - A tool/script for conversion?

I have been somewhat spoiled by using Oracle for years. Now I am using mysql and cannot find a non-ansi version/shorthand version of outer joins in MySQL.

In oracle I could do this

select a.country acountry,
        a.stateProvince aStateProvince,
        b.countryName bcountry,
        b.name bstateProvince
  from User a,
          stateprovince b
  where a.country*=b.countryName **(+)**
          and a.stateProvince*=b.name **(+)**

to get an outer join. Can mysql do something similar?

回答1:

Simpler than this:

select a.country acountry,
        a.stateProvince aStateProvince,
        b.countryName bcountry,
        b.name bstateProvince
  from User a
        left join
          stateprovince b
    on  a.country = b.countryName 
          and a.stateProvince = b.name 

No.

来源：https://stackoverflow.com/questions/6658334/syntax-for-outer-joins-in-mysql