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08.12.2008 at 12:32PM PDT, ID: 23642463
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9.5

update table using sub query

Asked by SRKD in Oracle Database

Tags:

I have two tables, name and lookup. No constraints defined on these tables. I have to update a column of table name taking values from lookup table. I used the following query,  


update name
     set columnName = ( select value
                           from lookup
                          where lookup.keyname = name.keyname
                             )
    where exists ( select value
                     from lookup
                   where lookup.keyname = name.keyname
                      )


The inner query select value
                           from lookup
                          where lookup.keyname = name.keyname returns more than one row, so this query throws an error subquery returns more than one records.

I tried following way,

update
      ( select columnName, value
         from name, lookup
        where name.keyname = lookup.keyname
           )
      set columnName = value

But as there is no constrains on the tables, so this throws the error regarding the key-preserved table.

Is there any solution for this problem?
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[+][-]08.12.2008 at 12:36PM PDT, ID: 22216345

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Zone: Oracle Database
Tags: subquery returns more than one rows
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Solution Provided By: MikeOM_DBA
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Solution Grade: A
 
 
[+][-]08.12.2008 at 12:54PM PDT, ID: 22216518

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