How can I use in query SQL file from Oracle SQL Developer, syntax like as MSSQL "USE DATABSE GO" for direct connect to an Oracle database.
Thanks!
Oracle introduced the multitenant Database in version 12c. It's structured similar to a MSSQL instance. If you are in that version, you can switch between pluggable databases with the following:
ALTER SESSION SET container = pdb1;
If you are on 11g or previous or on a non-cbo 12c Database, I don't see the way to switch to another instance.
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I made a relational model in Oracle SQL Developer and I want to make tables in MySQL Workbench. I generated the DDL script in SQL Developer and copied it in MySQL Workbench. I found out that the copied queries are not in correct syntax. I tried different options in SQL Developer to generate script and none of them were in MySQL syntax.
Is there a way to generate DDL script from a model, which is made in SQL Developer, for MySQL?
There is no straight query generation for MySQL in oracle SQL developer. You should use such a sites for your purpose to convert them into MySQL syntax or use tools for automatic converting.
I have a software which works with SQL DB as its local DB; we have ORACLE DB installed and we need to use it instead of SQL, what libraries or adaptors which I can use so the software will see the Oracle DB as SQL DB.
I designed a schema in Mysql Workbench, I want to get a script from Mysql Workbench and use it in sql server
I could transfer the database from mysql workbench to sql server using database converter which was very helpful.
I used https://www.spectralcore.com/fullconvert/ to do the conversion
I am using Oracle SQL Developer 4.1.3 and I have connected to MySQL database.
I want to select a different schema in Oracle SQL Developer but it is giving an error.
Here is my syntax:
ALTER SESSION SET CURRENT_SCHEMA = classicmodels;
I found this syntax on Docs.Oracle but still wondering why it is not working!
Thanks in advance!
I never seen this, but is it possible to have one SQL call join data from Oracle and SQl Server?
Yes, Oracle and SQL Server both have functionality that allows to connect to other databases, including different vendors. In Oracle terminology, it's a database link instance while on SQL Server it's called a Linked Server instance.
The syntax to reference the instance is different between Oracle and SQL Server though. IE:
Oracle:
SELECT t.*
FROM table_name#database_link_instance t
SQL Server:
SELECT t.*
FROM linked_server_instance_name.database_name.schema_name.table_name t
does MySQL support the linked server concept?
No, the closest MySQL has is the FEDERATED engine, which is only for connecting to remote MySQL instances.
PostgreSQL?
PostgreSQL has dblink. Last time I looked at dblink (pre-v9 release), it only could connect to other PostgreSQL instances.
Yes- both Oracle and SQL Server support the linked server concept. That allows you to reference the other server using a 4 part name. For example:
select *
from LocalDb.Schema.Table
cross join
OracleLinkedServer.RemoteDb.RemoteSchema.RemoteTable