How can I find which tables reference a given table in Oracle?
- Add the extension to SQL Developer: Tools > Preferences. Database > User Defined Extensions. Click “Add Row” button.
- Navigate to any table and you should now see an additional tab next to SQL one, labelled FK References, which displays the new FK information.
How do you find the foreign key of a table in SQL Oracle?
First method is with table Constraints tab (select table and select Constraints tab). Tab lists table constraints – primary, unique and foreign keys and check constraints – all in one grid. Foreign keys are the ones with ‘Foreign_Key’ value in CONSTRAINT_TYPE column.
Where is dependent table in SQL Developer?
Below SQL query can be used by PLSQL Developer:
- select table_name, constraint_name, status, owner.
- from all_constraints.
- where r_owner = :r_owner.
- and constraint_type = ‘R’
- and r_constraint_name in.
- select constraint_name from all_constraints.
- where constraint_type in (‘P’, ‘U’)
- and table_name = :r_table_name.
How do I get a list of tables in Oracle?
The easiest way to see all tables in the database is to query the all_tables view: SELECT owner, table_name FROM all_tables; This will show the owner (the user) and the name of the table. You don’t need any special privileges to see this view, but it only shows tables that are accessible to you.
How do you identify all foreign key references in a table?
The most Simplest one is by using sys. foreign_keys_columns in SQL. Here the table contains the Object ids of all the foreign keys wrt their Referenced column ID Referenced Table ID as well as the Referencing Columns and Tables.
How can I insert multiple rows in a table in Oracle?
Description This example creates three tables and them uses different INSERT statements to insert data into these tables. Multiple rows are inserted into a table using the INSERT ALL statement and by using the inserting the results of the select query.
How do you check if a table is used in any view in Oracle?
Check if Table, View, Trigger, etc present in Oracle
- verify VIEWS SYNTAX:
- verify SEQUENCES SYNTAX: SELECT SEQUENCE_NAME FROM USER_SEQUENCES; OR SELECT * FROM USER_SEQUENCES; Examples: Input : SELECT SEQUENCE_NAME FROM USER_SEQUENCES; Output : Input : SELECT * FROM USER_SEQUENCES; Output :
Which triggers are used for virtual tables?
SQL Server DML trigger allows using these two virtual tables INSERTED and DELETED. The ideal use of the trigger is auditing and managing a before and after version of the table row on INSERT, UPDATE, or DELETE operation within the transaction statement.
Can a foreign key be NULL?
A foreign key containing null values cannot match the values of a parent key, since a parent key by definition can have no null values. However, a null foreign key value is always valid, regardless of the value of any of its non-null parts. A foreign key value is null if any part is null.
How can I find which tables reference a given table in Oracle SQL?
In Oracle SQL Developer, if I’m viewing the information on a table, I can view the constraints, which let me see the foreign keys (and thus which tables are referenced by this table), and I can view the dependencies to see what packages and such reference the table. But I’m not sure how to find which tables reference the table.
Where do I find drop table in Oracle?
Oracle also has the drop table if exists feature. There are several data dictionary views that allow you to find all foreign reference to an Oracle table, namely the dba_constraints and dba_cons_columns views.
How to find table referenced inside PL / SQL stored procedures?
In a stored procedure, there are can many select, Update, insert, create, truncate statements. I want to know all the columns used in the query, all the tables from which the data is fetched. How do I query the dictionary to see the tables within by stored procedures?
How to track database dependencies in PL / SQL?
The Oracle data dictionary tracks the object types referenced in PL/SQL with the dba_dependencies view. To track the dependency among packages and tables, try this dictionary query: The landmark book “Advanced Oracle SQL Tuning The Definitive Reference” is filled with valuable information on Oracle SQL Tuning.