When I create a new SQL script , for example
select * from table
When I execute this the sql that gets ran is
SELECT * FROM MYNAME.TABLE
I understand DB2 does this , but I want the schema name to be concatenated onto the table names, not my username.
SELECT * FROM SCHEMANAME.TABLE
It did this for me before, but I dont know what changed that it now only puts the database username at the end of the tables.
Does anyone know how to set it so the schema name gets added on?
Best way in my eyes for Data Stuio is setting the special register "Current schema" on the Special Registers tab of the SQL Editor. Here is a screenshot
Schema name defaults to your authorisation ID (user name in most cases). To use a different name to qualify unqualified object names, set the special register CURRENT_SCHEMA appropriately:
SET SCHEMA whatever
Could you try this;
In Data Project Explorer,
right clicked, properties
Driver properties
type your schema in Default schema
disconnect and reconnect database;
and try without SCHEMANAME.
Related
When collaborating with colleagues I need to change the schema name every time I receive a SQL script (Postgres).
I am only an ordinary user of a corporate database (no permissions to change anything). Also, we are not allowed to create tables in PUBLIC schema. However, we can use (read-only) all the tables from BASE schema.
It is cumbersome for the team of users, where everybody is creating SQL scripts (mostly only for creating tables), which need to be shared amongst others. Every user has its own schema.
Is it possible to change the script below, where I will share the script to another user without the need for the other user to find/replace the schema, in this case, user1?
DROP TABLE IF EXISTS user1.table1;
CREATE TABLE user1.table1 AS
SELECT * FROM base.table1;
You can set the default schema at the start of the script (similar to what pg_dump generates):
set search_path = user1;
DROP TABLE IF EXISTS table1;
CREATE TABLE table1 AS
SELECT * FROM base.table1;
Because the search path was change to contain user1 as the first schema, tables will be searched in that schema when dropping and creating. And because the search path does not include any other schema, no other schema will be consulted.
If you
However the default search_path is "$user", public which means that any unqualified table will be searched or created in a schema with the same name as the current user.
Caution
Note that a DROP TABLE will drop the table in the first schema found in that case. So if table1 doesn't exist in the user's schema, but in the public schema, it would be dropped from the public schema. So for your use-case setting the path to exactly one schema might be more secure.
I am new with DB2.
I am not able to get data from a table without using the schema name. If I use a schema name with table name, I am able to fetch data.
Example:
SELECT * FROM TABLE_NAME;
It is giving me error, while
SELECT FROM SCHEMA_NAME.TABLE_NAME;
is fetching a result.
What do I have to set up not to always have to use the schema name?
By default, your username is used as the schema name for unqualified object names. You can see the current schema with, e.g. VALUES CURRENT SCHEMA. You can change the current schema for you current session with SET SCHEMA new_schema_name, or via e.g. a JDBC connection parameter. Most query tools also have a place to specify/change the current schema.
See the manual page for SET SCHEMA https://www.ibm.com/support/knowledgecenter/en/SSEPGG_11.1.0/com.ibm.db2.luw.sql.ref.doc/doc/r0001016.html
The full rules for the qualification of unqualified objects is here https://www.ibm.com/support/knowledgecenter/en/SSEPGG_11.1.0/com.ibm.db2.luw.sql.ref.doc/doc/r0000720.html#r0000720__unq-alias
E.g.
Unqualified alias, index, package, sequence, table, trigger, and view names are implicitly qualified by the default schema.
However, you can create a public alias for a table, module or sequence if you wish to be able to reference it regardless of your CURRENT SCHEMA value.
https://www.ibm.com/support/knowledgecenter/SSEPGG_11.5.0/com.ibm.db2.luw.sql.ref.doc/doc/r0000910.html
(P.S. all the above assumes you are using Db2 LUW)
Try using SET SCHEMA to set the default schema to be used in the session:
SET SCHEMA SCHEMA_NAME;
SELECT * FROM TABLE_NAME;
When using DBeaver - right click on connection > Connection Settings > Initialization, and select your default DB and default Schema:
After that, open your SQL Script and select Active DB:
I'm currently using a schema that will be changed to another schema in a couple of months. I do not not want to have to remove the SCHEMA_NAME multiple times from each report. All the reports so far have this format:
SELECT
COLUMN_NAME1,
SCHEMA_NAME.USER_DEFINED_FUNCTION(COLUMN_NAME2),
COLUMN_NAME3
FROM
SCHEMA_NAME.TABLE_NAME
I want to remove the schema name from the query so it looks like this:
SET SCHEMA LROUIM;
SET PATH LROUIM;
SELECT
COLUMN_NAME1,
USER_DEFINED_FUNCTION(COLUMN_NAME2),
COLUMN_NAME3
FROM
TABLE_NAME
I need the "SET SCHEMA" for the table name and "SET PATH" for the User Defined Function. This code works in Squirrel SQL, but if I insert this code into a Birt data set of type SQL SELECT QUERY, I get an error because of
SET SCHEMA LROUIM;
SET PATH LROUIM;
How do I implement SET SCHEMA and SET PATH in a SQL Select Query in Birt?
I think BIRT uses a JDBC connexion, and you can modify the connection parameters by specifying a default schema.
I am using Orable DB in my application and SQL Developer Query Browser for UI Purpose.
Today I faced a very strage issue, I run a query in the query browser which gives me records successfully. But under the connection -> Table tree hierarchy, no tables are displayed.
From stackoverflow I got a solution from here : SQLDeveloper displays no tables under connections where it says tables
But under "Other Users" tree, it displays large list of schemas. So I am confused which schema is used by me query.
Any suggestion ??
Assuming that you are running a query that involves an unqualified identifier
SELECT *
FROM some_object
and that you haven't done something odd like changing the current_schema of the session, the object is either something that exists in your schema or is a public synonym.
SELECT owner, object_type, object_name
FROM all_objects
WHERE object_name = 'SOME_OBJECT'
will show you all the objects that you have access to with that name.
I want to create a test environment where the basic underlying postgres database is overlain with an instance-localized private view, such that all queries from a specific set of processes go through the private view while other (potentially concurrent or merely subsequent) processes would remain unaffected.
I think I can do something like this using the search_path mechanism, but it's not clear if I can do that transparently (e.g., without having each application execute some set of SQL setup for each connection). For example, is there something I could set as an environment variable saying "use this search_path" and have every process that I start thereafter see that and use the same private table instances?
If it matters, the processes are all going through the C++ adapter, libpqxx, to access the database.
Thanks,
Jeff
If every instance has a separate database user role, you can simply create a schema with the same name as the user and it'll use it -- without any change to configuration:
myuser=> show search_path;
search_path
--------------
"$user",public
(1 row)
myuser=> create schema myuser;
CREATE SCHEMA
myuser=> create table foo(i int);
CREATE TABLE
myuser=> \d foo
Table "myuser.foo"
Column Type Modifiers
------ ------- ---------
i integer
If you want to have different names for users and schemas, you can configure it for each user manually:
ALTER USER foo SET search_path=foo_schema;
You can configure the default search path for all connections in the postgre configuration file.
See http://www.postgresql.org/docs/9.0/static/runtime-config-client.html#RUNTIME-CONFIG-CLIENT-OTHER
If each connection needs some custom search path based on who the user is you will have to do that in your code and issue a SET search_path TO x,y,z;for each connection.
Another option that comes to mind is using stored functions and have them use dynamic sql to query from different schemas based on who the caller is. You would have to maintain a table or the more evil of the two "hard code" the user/schema mappings into the stored functions that the stored function would use.