What is table schema name?

Hi,
I was looking at DatabaseMetaData::getColumns() while searching for a way to get a table's column names and I run into these ugly params catalog and schemaPattern. Of course nowhere on the sun's site could I find a definition of these terms although they're used quite often in the API documentation. So I turned to a specific DBMS provider and found out that catalog is a fancy term for the system metadata. But what about the String schema param? I usually see a table's schema referred to as the "structure" of the table, what columns it contains of which types. But I've never known this "schema" can have a string name. Anyone so kind to explain it to me or better point me to a text that has definitions and explanations of the concepts used in the JDBC API documentation? And more generally for JDK where do you folks usually go when you want a simple explanation of how things work, not the dry listing of function and parameter names? Look at MSDN for example, it is both a good reference and a reasonable self-contained tutorial. Not that I praise Microsoft but...
BTW I found that probably ResultSetMetaData is more suitable for my initial purposes, but still the questions bother me. So if you have any suggestion please let me know.
Thank you in advance

To answer your question, what is a table schema name?, it is the name of the schema that the table belongs to. If you have an Oracle database, MYDB, it will have at the very least two users which are SYS and SYSTEM, these are schema names, there are objects that exists in their schema. If you create a new user, JAKE, and then create a bunch of objects as JAKE, these objects are said to belong to the JAKE schema. All objects are like this, not just tables (indexes, sequence tables, triggers, etc.).

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Hi Experts,
i need the following info
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Bye
Babu

Thanks Bob for your clarification.
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If we have any separate link in metalink, pls share that link.
Thanks again for your valuable time.
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What does this scheme-name stand for ?

What does this <scheme-name> stand for? Does it stand for the name of this <read-write-backing-map-scheme> ?
<read-write-backing-map-scheme>
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<internal-cache-scheme>
<local-scheme>
<scheme-ref>categories-eviction</scheme-ref>
</local-scheme>
</internal-cache-scheme>
<cachestore-scheme>
<class-scheme>
<class-name>com.demo.cache.coherence.categories.CategoryCacheLoader</class-name>
</class-scheme>
</cachestore-scheme>
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What is another schema name in oracle 1z0-051 exam ?

hi all
i want to prepare oracle 1z0-051 , i study SQL tutorial (HR schema) , and i have seen some questions. but some of tables is like (sales , customers ,promotion ...ets)
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and thx advace

In the exam you will get the snippet of the code that includes table structure and may be data in some tables in some questions. But every time they are different. so my advice is that you need to understand how to read a table definition and interpret. dont just mug up the things. Go to oracle documentation and read and try get the concept right.
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hi i want to make FS for order status report i almost get all table and field but i don't get only two field rate per unit and balance value table field didn't get please help me searching in field and table
i want to develop my status report

Hi,
Check tables VBAK and VBAP wherein you will get all header and item details.
VBUK and VBUP for header and line item statuses.
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Hope that helps.
Regards,
Amit

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Hello Guys,
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Thanks for your answer, but where do I get the Owner (Schema) name.
When I print the Table.Location property I just get the table name, not any Owner.
Ex:
My table is:
CUSTOM.TABLE1
If I print the value of table.location property value its just "TABLE1". Then If I log on as other user, not custom, I get "Table or view does not exist".
Have you understood my issue?

What Oracle Table contains Partition Key Field Name?

What Oracle table/view maintains the partition key field name?
All_Tab_Partitions does not appear to maintain such information.
When I use Toad -> Schema -> Tables -> Partitions, it lists the partition key field name that the partition is based.
Thank You

all_part_key_columns
or
USER_part_key_columns
Edited by: OrionNet on Dec 5, 2008 3:56 PM

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Hi, need ur help again,
I would like to access other schema's table without specify the schema name. for example,
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Need to include table name,schema name in select output

I need to output the table name and schema name of the current user into a table.. I have tried including
within a select statement..
table_name,
from user_tables
where table_name='mnme';
no rows returned

Hi,
Its in upper case 'MNME'
Best.
EA

Need to know schema name and table name associated with a column-URGENT

Hi folks,
I need to know the schema name and the table name associated with a column. Though jdbc has the api to getTableName and getSchemaName, some database vendor like oracle does return empty upon call of mentioned methods. I found that oracle driver does not support that
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Thanks
Angelina

Angelina,
Your question has been discussed several times previously in this forum. Search this forum's archives for "getTableName". Oracle JDBC driver does not implement this (because "it is not feasible" -- according to Oracle).
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Good Luck,
Avi.

What is table name

Hi,
What is table name in which we have locking information of the provider.
The column in the table are as follows.
ID | Name | Type | Version | Portal DB Provider | Created Date | Created by | Status | Locked By | Locked On |
I want the name of this table.

Hi
It is stored in QAMR table not in QALS
Characteristic Number field is
MERKNR
Characteristic Results (values) are stored in following fields
MAXWERT
MEDIANWERT
MINWERT
MITTELWERT
VARIANZ
MOMENT3
MOMENT4
ANTEILO
ANTEILU
See the other related tables for the Characteristic values are:
QAMV,QASR,QPMK,QPMT,QPMZ
Reward points if useful
Regards
Anji

What balance value in sales order and iwant to know table field name in

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Hello
where the balance value come in sales order
Please note that when you raise your question at SDN forum, your question needs to be clear...
What do you mean by BALANCE VALUE ????
Regards,
Sarthak

Get the table names from a specified schema name

Can't any one can hlep me how to use OCIDescribeAny() to retrive the list of table names for a given schema name?
I have problem when I connect to the database using syste as usr id. I can't ge the table name form the SCOTT schema.

If I understand you correctly, I don't think OCIDescribeAny() is the way to go.
You can get a list of tables owned by a particular schema by using the following SQL:-
SELECT TABLE_NAME FROM DBA_TABLES WHERE OWNER = 'SCOTT'
Just change the where clause to your needs.
Regards.
Adrian

What is table name and field name for balance value in sales order in sap

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You can get the Sales Order status in Table VBUK & VBUP at Item Level.
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Best Regards,
Ankur

I need the "Real" Table / Table Column names from a sql view

Firstly, we have a system with ~1000 tables and ~250 views. We have field level security on the table columns (in our code)
Now we have a lot of views which select data from the tables, but I need to get the "Table Column Name" that is linked in the view.
I know there are view columns that is not linked to a specific table column, (or concatenation of columns) so those columns can just return NULL.
From the sample you will see there is a view selecting data from another view. I know it is not the best sql performance (execution path) but that is another topic on its own.
I went through a lot of the sys.* stored procs or sys.* views to try and figure out if there is a view that we can use to get the expected results.
here is the sql code:
if
Exists (select
* from
sys.all_objects
where name =
'AliasView2')
drop view dbo.AliasView2
if
Exists (select
* from
sys.all_objects
where name =
'AliasView1')
drop view dbo.AliasView1
if
Exists (select
* from
sys.all_objects
where name =
'Table4')
BEGIN
alter table dbo.Table4
DROP CONSTRAINT [FK_T4_T3]
alter table dbo.Table4
DROP CONSTRAINT [PK_T4_Constraint]
drop table dbo.Table4
END
if
Exists (select
* from
sys.all_objects
where name =
'Table3')
BEGIN
alter table dbo.Table3
DROP CONSTRAINT [FK_T3_T2]
alter table dbo.Table3
DROP CONSTRAINT [PK_T3_Constraint]
drop table dbo.Table3
END
if
Exists (select
* from
sys.all_objects
where name =
'Table2')
BEGIN
alter table dbo.Table2
DROP CONSTRAINT [FK_T2_T1]
alter table dbo.Table2
DROP CONSTRAINT [PK_T2_Constraint]
drop table dbo.Table2
END
if
Exists (select
* from
sys.all_objects
where name =
'Table1')
BEGIN
alter table dbo.Table1
DROP CONSTRAINT [PK_T1_Constraint]
drop table dbo.Table1
END
create
Table dbo.Table1
T1_PK        int
NOT NULL
Identity(1, 1)
CONSTRAINT [PK_T1_Constraint]
PRIMARY KEY (T1_PK),
T1_Field1    varchar
NULL,
T1_Field2    varchar
NULL,
create
Table dbo.Table2
T2_PK        int
NOT NULL
Identity(1, 1)
CONSTRAINT [PK_T2_Constraint]
PRIMARY KEY (T2_PK),
T2_Field1    varchar
NULL,
T2_Field2    varchar
NULL,
T2_FK        int
NOT NULL
CONSTRAINT [FK_T2_T1]
FOREIGN KEY (T2_FK)
REFERENCES dbo.Table1
(T1_PK)
create
Table dbo.Table3
T3_PK        int
NOT NULL
Identity(1, 1)
CONSTRAINT [PK_T3_Constraint]
PRIMARY KEY (T3_PK),
T3_Field1    varchar
NULL,
T3_Field2    varchar
NULL,
T3_FK        int
NOT NULL
CONSTRAINT [FK_T3_T2]
FOREIGN KEY (T3_FK)
REFERENCES dbo.Table2
(T2_PK)
create
Table dbo.Table4
T4_PK        int
NOT NULL
Identity(1, 1)
CONSTRAINT [PK_T4_Constraint]
PRIMARY KEY (T4_PK),
T4_Field1    varchar
NULL,
T4_Field2    varchar
NULL,
T4_FK        int
NOT NULL
CONSTRAINT [FK_T4_T3]
FOREIGN KEY (T4_FK)
REFERENCES dbo.Table3
(T3_PK)
GO
--Create a basic view to select some data
CREATE
VIEW dbo.AliasView1
AS
select
t2.T2_FK as Table2_ForeignKey,
t1.T1_Field1 as Table1_FieldOne,
t2.T2_Field1 as Table2_FieldOne
FROM Table1 t1
Left outer
join Table2 t2 on t2.T2_FK
= t1.T1_PK;
GO
--Create another view that select basic data, and also selecting data from view 1
CREATE
VIEW dbo.AliasView2
AS
select
v1.Table1_FieldOne
as Table1_FieldOne,
v1.Table2_FieldOne
as Table2_FieldOne,
t3.T3_Field1 as Table3_FieldOne,
t3.T3_Field2
FROM Table3 t3
Left outer
join AliasView1 v1 on v1.Table2_ForeignKey
= t3.T3_PK;
GO
--My attempt to get the desired output, but no luck
SELECT
col.COLUMN_NAME as AliasColumnName, col.DATA_TYPE, col.CHARACTER_MAXIMUM_LENGTH
as max_length, colu.*
FROM
information_schema.COLUMNS col
left
outer join
(SELECT
VIEW_SCHEMA, VIEW_NAME, COLUMN_NAME,
min(TABLE_NAME)
as TABLE_NAME
FROM information_schema.VIEW_COLUMN_USAGE colu
WHERE VIEW_NAME =
'AliasView2'
Group by VIEW_SCHEMA, VIEW_NAME, COLUMN_NAME
) COLU ON colU.VIEW_NAME
= col.TABLE_NAME
and colu.COLUMN_NAME
= col.COLUMN_NAME
left
outer join
(select a.name
as TableName, c.name
as FieldName
from sys.foreign_key_columns fk
join sys.all_objects a
on a.object_id
= fk.parent_object_id
join sys.all_columns c
on c.object_id
= a.object_id
and c.column_id
= fk.parent_column_id
join sys.all_objects ar
on ar.object_id
= fk.referenced_object_id
join sys.all_columns cr
on cr.object_id
= ar.object_id
and cr.column_id
= fk.referenced_column_id
join sys.schemas scr
on scr.schema_id
= ar.schema_id
) fks on fks.TableName
= colu.TABLE_NAME
and fks.FieldName
= colu.COLUMN_NAME
WHERE COL.TABLE_NAME
= 'AliasView2'
order
by col.ORDINAL_POSITION
This is the results being returned: (That is not 100% what I am looking for)
AliasColumnName
DATA_TYPE
max_length
VIEW_SCHEMA
VIEW_NAME
COLUMN_NAME
TABLE_NAME
Table1_FieldOne
varchar
1
dbo
AliasView2
Table1_FieldOne
AliasView1
Table2_FieldOne
varchar
1
dbo
AliasView2
Table2_FieldOne
AliasView1
Table3_FieldOne
varchar
1
NULL
NULL
NULL
NULL
T3_Field2
varchar
1
dbo
AliasView2
T3_Field2
Table3
The desired results must be like the following:
AliasColumnName
DATA_TYPE
max_length
VIEW_SCHEMA
VIEW_NAME
COLUMN_NAME
TABLE_NAME
Table1_FieldOne
varchar
1
dbo
AliasView2
T1_Field1
Table1
Table2_FieldOne
varchar
1
dbo
AliasView2
T2_Field1
Table2
Table3_FieldOne
varchar
1
dbo
AliasView2
T3_Field1
Table3
T3_Field2
varchar
1
dbo
AliasView2
T3_Field2
Table3
NOTE: the COLUMN_NAME and TABLE_NAME must the REAL field of the TABLE it belongs to and not only ONE LEVEL Higher’s ALIAS View Name

Now we have a lot of views which select data from the tables, but I need to get the "Table Column Name" that is linked in the view.
If you are using SQL Server 2012/2014, then you can use
sys.dm_exec_describe_first_result_set (Transact-SQL) to gte the informations.
Olaf Helper
[ Blog] [ Xing] [ MVP]

What is table schema name?

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