hive - FAILED: SemanticException [Error 10008]: Line 5:16 Ambiguous table alias 'in_2051_1' -

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insert  overwrite  table out_2051 select in_2051_0.column1,in_2051_0.column2,in_2051_1.column2,in_2051_1.column1 in_2051_0 right outer join in_2051_1 on (in_2051_0.column2 = in_2051_1.column1) left outer join in_2051_1 on (in_2051_0.column2 = in_2051_1.column1) ;

failed: semanticexception [error 10008]: line 5:16 ambiguous table alias 'in_2051_1'

what error mean , how fix it?

i can find left , right outer join 2 tables same column means "full outer join".

change sql 

insert  overwrite  table out_2051 select in_2051_0.column1,in_2051_0.column2,in_2051_1.column2,in_2051_1.column1 in_2051_0 full outer join in_2051_1 on (in_2051_0.column2 = in_2051_1.column1)

and think error means last in_2051_1 table refer same 4th line.

at on clause of 5th line. in_2051_1.column1 ambiguous, hive dont know in_2051_1 right join 1 or left join one. can give in_2051_1 alias 'in_2051_1_2' @ line 5.

i think full outer join want.


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