How do you find the DDL of a table?

How do you find the DDL of a table?

select dbms_metadata. get_ddl(‘TABLE’, ‘YOUR_TABLE_NAME’) from dual; You can also do this for all tables at once: select dbms_metadata.

How do you get DDL of a table in Oracle using query?

1. Statement 1. CREATE TABLE My_Table (COLUMN1 VARCHAR2(1), COLUMN2 NUMBER(1)) Table created.
2. Statement 2. BEGIN DBMS_METADATA. SET_TRANSFORM_PARAM(DBMS_METADATA.
3. Statement 3. select DBMS_METADATA.GET_DDL(object_type, object_name) from user_objects where object_type = ‘TABLE’ and object_name = ‘MY_TABLE’

What is DDL of a table?

In the context of SQL, data definition or data description language (DDL) is a syntax for creating and modifying database objects such as tables, indices, and users. Common examples of DDL statements include CREATE , ALTER , and DROP .

How do I get DDL of a table in SQL Developer?

Generate DDL script for all tables of a schema in SQL Developer

1. Go to FILE -> DATA MODELLER -> EXPORT -> DDL FILE.
2. New pop up window appear.
3. Click on Generate button.
4. New pop window appears.
5. Now click on “Generate DDL scripts in Separate Files”, on screen at bottom right.
6. Now go to tab “Include TABLE DDL scripts.

What is a DDL in Oracle?

DDL (Data Definition Language) is a language used by a database management system (like Oracle) that allows users to define the database and specify data types, structures and constraints on the data. Examples DDL statements are: CREATE TABLE, CREATE INDEX, ALTER, and DROP.

How do I create a DDL for a view?

Select the database under which you want to create the view, right-click Views, and choose New View. The corresponding editor appears. Using the editor, you can do the following: Select underlying tables and columns from these tables for the view.

What is a user table?

The Users table is a supporting table. Each record in the table stores information about one user involved in calls or sessions that have records in the database.

What should a user table have?

Things like last login, login location, login IP, etc. are better served in a historical table where you can run inserts and then query against the table if you need information. The idea is to have infrequent updates in a heavily used table, like users.

What is DDL in Oracle with example?

What is an example of DDL?

DDL is Data Definition Language which is used to define data structures. For example: create table, alter table are instructions in SQL.

How to generate user DDL in Oracle orakldba-Oracle?

To generate ddl for all users: Process-1: By this below query you can generate all users ddl in a spool file. SQL> SQL> set heading off; SQL> set echo off; SQL> set lines 1000 pages 4000 SQL> set long 999999 SQL> spool ddl_all_user.sql SQL> select dbms_metadata.get_ddl(‘USER’,U.username) from dba_users U;SQL> SQL> spool off; Process-2:

How to get table and index DDL in Oracle?

How to get table and index DDL in Oracle? To get all table and indexes for the EDS table, we execute dbms_metadata. get_ddl, select from DUAL, and providing all required parameters.

What happens if Oracle changes the DDL script?

So even if Oracle adds new table options or parameters like extends or changes to the CREATE/ALTER table syntax, the script is not affected. Additionally, this DDL generation script can be extended to change or add additional objects types because it is very straightforward and easy.

How to punch a primary key in table DDL?

Just for illustration, we show how a primary key can be punched as part of the table DDL or separately using the INDEX argument. Now we can modify the syntax to punch a whole schema. It us easily done by selecting dbms_metadata. get_ddl and specifying USER_TABLES and USER_INDEXES.