20 lines
519 B
SQL
20 lines
519 B
SQL
-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
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-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
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drop table a;
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drop table b;
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create table A(col11 number, col12 number);
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create table B(col21 number, col22 number);
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insert into a values (-3,-7);
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insert into a values (null,-1);
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insert into b values ( -7,-3);
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update a set col11 =
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(select avg(b.col22) keep (dense_rank first order by (col22))
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FROM b where b.col21= a.col12)
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/
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