/TypeScript/View all foreign key constraints postgres

View all foreign key constraints postgres

Postgres check for foreign key

SELECT
    r.table_name
FROM information_schema.constraint_column_usage       u
INNER JOIN information_schema.referential_constraints fk
           ON u.constraint_catalog = fk.unique_constraint_catalog
               AND u.constraint_schema = fk.unique_constraint_schema
               AND u.constraint_name = fk.unique_constraint_name
INNER JOIN information_schema.key_column_usage        r
           ON r.constraint_catalog = fk.constraint_catalog
               AND r.constraint_schema = fk.constraint_schema
               AND r.constraint_name = fk.constraint_name
WHERE
    u.column_name = 'id' AND
    u.table_catalog = 'db_name' AND
    u.table_schema = 'public' AND
    u.table_name = 'table_a'

Source: stackoverflow.com

View all foreign key constraints postgres

SELECT
    tc.table_schema, 
    tc.constraint_name, 
    tc.table_name, 
    kcu.column_name, 
    ccu.table_schema AS foreign_table_schema,
    ccu.table_name AS foreign_table_name,
    ccu.column_name AS foreign_column_name 
FROM 
    information_schema.table_constraints AS tc 
    JOIN information_schema.key_column_usage AS kcu
      ON tc.constraint_name = kcu.constraint_name
      AND tc.table_schema = kcu.table_schema
    JOIN information_schema.constraint_column_usage AS ccu
      ON ccu.constraint_name = tc.constraint_name
      AND ccu.table_schema = tc.table_schema
WHERE tc.constraint_type = 'FOREIGN KEY' AND tc.table_name='mytable';

Source: stackoverflow.com

Similar codes

1 vote339 views1 answer
Typescript ' does not exist on type 'typeof globalThis'
TypeScript
0 vote319 views1 answer
Typescript allow object subset of interface
TypeScript
1 vote347 views1 answer
ERROR in ngcc is already running at process with id 8108. If you are running multiple builds in parallel then you should pre-process your node_modules via the command line ngcc tool before starting the builds;
TypeScript
0 vote345 views1 answer
Chakra ui menu open on hover
TypeScript
0 vote298 views1 answer
Typescript "variable?: type" notation
TypeScript
1 vote365 views1 answer
Whats the file path for the documents folder linux
TypeScript
0 vote328 views1 answer
How to make space equal between elements in a linearlayout android studio
TypeScript
0 vote335 views1 answer
Map gRPC error
TypeScript
0 vote342 views1 answer
Create 2 set A and B of size n1 and n2 . Print sets A and B.
TypeScript
0 vote333 views1 answer
Grid layout elements in one row
TypeScript