Update statement with inner join issues

Question

I have searched for the answer on this and not really 100%....so figured I would ask...be nice :)
what have I done wrong? Or am I just going about this the wrong way? I have looked at the oracle docs and I can't find an example showing me this. I do see where you SET values based on the select query results. I want to update the result of a query based on the join with static values....
UPDATE table.a
SET table.a_STATUS=9,table.a.INDEX = 'N'
WHERE (SELECT table.a INNER JOIN table.b ON (table.a.COMPANY = table.b.COMPANY) AND (table.a.PO_NUMBER =table.b.PO_NUMBER) AND (table.a.PO_RELEASE =table.b.PO_RELEASE) AND (table.a.PO_CODE =table.b.PO_CODE) AND (table.a_STATUS=1) AND (table.b.CLOSED_FL = 'Y'));

Answer 1

Hi,
Welcome to the forum!
user11360811 wrote:
I have searched for the answer on this and not really 100%....so figured I would ask...be nice :)
what have I done wrong? Or am I just going about this the wrong way? I have looked at the oracle docs and I can't find an example showing me this. I do see where you SET values based on the select query results. I want to update the result of a query based on the join with static values....
UPDATE table.aThat's updating a table called A in a schema called TABLE (which is not a good name for any user-named object). Are those really your table and schema names? Perhaps you meant to have an underscore instead of a dot:
UPDATE  table_ais much, much more reasonable. It means the table name is TABLE_A (a perfectly good name) in the current schema.
SET table.a_STATUS=9,table.a.INDEX = 'N'
WHERE ( ...There's a syntax error. You can't just say
"WHERE (sub-query)"; it has to be
"WHERE EXISTS (sub-suery)" or
"WHERE (sub-query) = some_value" or
"WHERE some_value IN (sub_query)", or something similar. WHERE can never be used without some kind of comparison operator, such as EXISTS, = or IN.
SELECT table.a INNER JOIN table.b ON ...Here are some more syntax errors. The correct syntax for any query is
SELECT  column_list
FROM    table_name ...If table.a is your (first) table name, then you're missing the list of columns to SELECT, and the mandatory keyword FROM.
(table.a.COMPANY = table.b.COMPANY) AND (table.a.PO_NUMBER =table.b.PO_NUMBER) AND (table.a.PO_RELEASE =table.b.PO_RELEASE) AND (table.a.PO_CODE =table.b.PO_CODE) AND (table.a_STATUS=1) AND (table.b.CLOSED_FL = 'Y'));Some general advice about UPDATE:
If it's not obvious how to use UPDATE to do what you want, then there's a good chance that UPDATE is the wrong tool for the job. MERGE might be much simpler, and more efficient as well. This is especially likely if you need to join the table that's being updated to some other table.
Whenever you have a problem, please post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) from all tables involved. That way, the people who want to help you can re-create the problem and test their ideas.
Also post the results you want from that data, and an explanation of how you get those results from that data, with specific examples.
Simplify the problem as much as possible. Remove all tables and columns that play no role in this problem.
If you're asking about a DML statement, such as UPDATE, the CREATE TABLE and INSERT statements should re-create the tables as they are before the DML, and the results will be the contents of the changed table(s) when everything is finished.
Always say which version of Oracle you're using (for example, 11.2.0.2.0).
See the forum FAQ {message:id=9360002}
Edited by: Frank Kulash on Jan 17, 2013 4:58 PM