How do I select from multiple schema's

How do I select from multiple schema's
Tried:
SELECT * FROM schema1.table1, schema2.table2
WHERE schema1.table1.column1 = schema2.table2.column2;
Errored......

Thanks
We finally got in touch with our DBA and he said the same thing.
SELECT t1.*,
t2.*
FROM schema1.table1 t1,
schema2.table2 t2
WHERE t1.column1 = t2.column2;
I'll try it afther I finish a task my boss just gave me.
BRB then.

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SELECT from multiple schema's

How do I select/insert/update/delete from multiple schema's.
Tried:
SELECT * FROM schema1.table1, schema2.table2
WHERE schema1.table1.column1 = schema2.table2.column2;
Errored......

Hello
you need to use an alias for each table
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2 /
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ERROR at line 1:
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D D
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How to access tables from multiple schemas

Hi,
I have access to 2 different schema (schema_a, Schema_B) through my APEX environment... I have a query that's based on tables from both the schemas... something like this
select SCHEMA_A.table1.column1, table2.column2
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SCHEMA_A.table1, table2
it is giving me a message that table doesn't exist.
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You need to grant the required permission (if there is no restriction then you can use GRANT ALL), You can give the permission to particular user on the schema.
conn / as sysdba
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SELECT from multiple schemas

I have an Oracle database with two schemas in it, there's a table in each schema and two colums in each. with the exception of the schema name they're identical.
Schemas: rate1, rate2
Table: rate_details
Columns: rate_file, rate_live
Each table will only ever have one row in it. The rate_file column will contain a filename and the rate_live will contain either a Y or N.
Only one of the schemas will have it's rate_live column set to Y at any one time.
I want to write an SQL statement that will tell me what the value of rate_file is by providing the rate_live value.
The statement I have is as follows:
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FROM rate1.rate_details r1, rate2.rate_details r2
WHERE rate_live = 'Y'
My problem here is that rate_live is ambiguous as it's in both schemas, so it wants me to tell it which schema to look to.
Is there a way around this? Ultimately, if my data was as follows, the only output I'd want is date_250205:
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rate_file is date_180205
rate_live is N
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Richard:
I don't think that there is a more efficient way to do this query. Given that "Each table will only ever have one row in it", Oracle will always full-scan both tables anyway. In either of my queries, Oracle would essentially, full scan rate1.rate_details, then full scan rate2.rate_detail and concatenate that to the first resultset. The combined rows would then be filtered (i.e. Inspect each row for the value of rate_live) to find the one(s) matching the criteria.
I don't really see this problem as being a grouping problem at all, and any solution using GROUP BY would only add at least one sort for the group by.
Generally speaking, I see UNION [ALL] queries as answering a different set of questions than grouping queries, although the tw can be, and often are, combined. I would be interested to see where you saw the comments about UNION ALL being replaced by Grouping Sets.
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How to select from multiple addresses of account in IC Web Client

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Edited by: Danisman Danisman on Aug 31, 2010 2:52 PM

Thanks for the answer. Yes, we are using 7.0 but in the account identification screen, there is no personalize button ( I assume you are suggesting adding an addres block by using that button, right?).
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Hi all,
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app1\files\uk\download\UK.txt
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Hi,
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I have simple example :
First one - Join 5 tables
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start-of-selection.
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get run time field f2.
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Hello everybody,
How to plan inventory from multiple organizations simultaneously using SCP?
My customer found that in supply chain planning (MRP) system always plans in single manufacturing organization, say, ATC, firstly. If set in organization item master, the source type as 'Inventory' and the source organization as another trading organization name, say, ANX. if there is insufficient inventory in ATC, SCP-MRP would plan in ANX, disregard of the inventory exist in ANX for the item.
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Message was edited by:
user447176

Catalina,
Net the inventory simultaneously? Its not quite clear what your client wants.
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Hi Palnati,
You either use a select query with join or a stored procedure which will contain the logic to extract the data from multiple tables. But, the limitation in case of stored procedure is u can hv only one selct query in it.
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Check the following link
<a href="http://help.sap.com/saphelp_nw04/helpdata/en/14/80243b4a66ae0ce10000000a11402f/frameset.htm">http://help.sap.com/saphelp_nw04/helpdata/en/14/80243b4a66ae0ce10000000a11402f/frameset.htm</a>
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Message was edited by:
Akshay Salunke

Sample PHP Service selecting from multiple tables

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First, the relationship between school and person is many-to-many NOT one-to-many -- you will need to add a junction table.
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And there we go again...
Read this topic:
For All Entries is NOT better than INNER JOIN in most cases
And this one:
inner join vs for all entries
Also that one:
Re: LOOP AT vs INNER JOIN
JOINs are really better than for all entries in most cases. Problem is people tend to ignore basic things like using pks or indexes while making them.

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How do I select from multiple schema's

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