mysql - GROUP BY in SUBQUERY WITH UNION ALL -



mysql - GROUP BY in SUBQUERY WITH UNION ALL -

i have 2 tables, 1 showing search queries history, other showing locations.

the first table search queries: searchterm | date | userid | historyid sec locations: userid | date | historyid | lat | lng

i using union bring these in sub query bring together left & bring together right create total join.

select st, fa (select webhistory.searchterm st, locationhistory.fulladdress fa webhistory left outer bring together locationhistory on webhistory.historyid=locationhistory.historyid union select webhistory.searchterm st, locationhistory.fulladdress fa webhistory right outer bring together locationhistory on webhistory.historyid=locationhistory.historyid) t

every thing working beautifully i'm getting results entries in webhistory table, , same locationhistory table. issue have when i'm getting rows have been added both. show twice!

i can't utilize union bring together more want to. if 2 of same searches added, instead of showing 2 bring together them one. need utilize union all.

i have utilize union i'm joining left , right , in mysql total bring together isn't supported.

so i'm assuming need grouping historyid id same on rows added @ same time (when search made query , location). problem is, i've tried , tested can't seem work. missing something?

lastly, while i'm asking question , because i've not yet got point of testing order date on outer or subqueries want show recent first result?

/* more info */

i need to output:

searchterm if there no fulladdress. total address if there no searchterm. searchterm & fulladdress if there both.

currently outputs first 2 fine, latter output twice.

as far understand, want duplicates same historyid eliminated, should able utilize union long historyid included in union duplicates another historyid won't eliminated;

select st, fa (select webhistory.searchterm st, locationhistory.fulladdress fa, webhistory.historyid webhistory left outer bring together locationhistory on webhistory.historyid=locationhistory.historyid union select webhistory.searchterm st, locationhistory.fulladdress fa, locationhistory.historyid webhistory right outer bring together locationhistory on webhistory.historyid=locationhistory.historyid) t

mysql subquery union-all

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