sql - Mysql statement (syntax error on FULL JOIN) -

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what wrong sql statement, says problem near full join, i'm stumped:

select `o`.`name` `offername`, `m`.`name` `merchantname`  `offer` `o`  full join `offerorder` `of` on of.offerid = o.id  inner join `merchant` `m` on o.merchantid = m.id  group `of`.`merchantid`

please gentle, not sql fundi

mysql doesn't offer full join, can either use

  • a pair of left+right , union; or
  • use triplet of left, right , inner , union all

the query wrong, because have group select columns not aggregates.

after convert left + right + union, still have issue of getting offername , merchantname random record per each distinct of.merchantid, , not same record.

because have inner join condition against o.merchant, full join not necessary since "offerorder" records no match in "offer" fail inner join. turns left join (optional). because grouping on of.merchantid, missing offerorder records grouped under "null" merchantid.

this query work, each merchantid, show 1 offer merchant made (the 1 first name when sorted in lexicographical order).

select min(o.name) offername, m.name merchantname  offer o  left join offerorder `of` on `of`.offerid = o.id  inner join merchant m on o.merchantid = m.id  group `of`.merchantid, m.name

note: join o.merchantid = m.id highly suspect. did mean of.merchantid = m.id? if case, change left right join.


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