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19 mar 2019 · I'm trying to find a query which will return me a list of the foreign keys for a table and the tables and columns they reference. I am half way there with. SELECT a.table_name, a.column_name, a.constraint_name, c.owner FROM ALL_CONS_COLUMNS A, ALL_CONSTRAINTS C where A.CONSTRAINT_NAME = C.CONSTRAINT_NAME and a.table_name=:TableName and C.
Below query will give all the foreign key constraints defined on TABLE_NAME: select baseTable.* from all_constraints baseTable , all_constraints referentedTable where baseTable.R_CONSTRAINT_NAME = referentedTable.CONSTRAINT_NAME and baseTable.constraint_type = 'R' and referentedTable.table_name = 'TABLE_NAME';
23 maj 2017 · I'm looking for a query allowing to retrieve foreign key infos (each line: referrencing table & field, referrenced table & field) of an entire schema. I'm currently working on it and may end up with a solution in the next minutes/hours.
A solution to fix this problem is to use the Oracle foreign key constraint to enforce the relationship between rows from the supplier_groups and suppliers tables. First, drop the suppliers table: DROP TABLE suppliers; Code language: SQL (Structured Query Language) ( sql )
This Oracle tutorial explains how to use Foreign Keys in Oracle with syntax and examples. A foreign key is a way to enforce referential integrity within your Oracle database. A foreign key means that values in one table must also appear in another table.
Oracle Foreign Key Constraint with Examples. A Foreign Key constraint establishes a link or relationship between columns in one table with column ( WHICH IS A PRIMARY KEY) from other table. A Foreign key constraint enforces referential integrity between two tables, one which is termed as child table in which we add the Foreign Key, which ...
5 sie 2018 · This guide will show you how you can view table foreign key constraints in Oracle SQL Developer, free administration and development tool for Oracle.
