mirror of
https://github.com/hasura/graphql-engine.git
synced 2024-12-15 17:31:56 +03:00
a66fb42ce2
* Separate DB and metadata migrations * Refactor Migrate.hs to generate list of migrations at compile-time * Replace ginger with shakespeare to improve performance * Improve migration log messages
46 lines
1.6 KiB
SQL
46 lines
1.6 KiB
SQL
CREATE OR REPLACE VIEW hdb_catalog.hdb_foreign_key_constraint AS
|
|
SELECT
|
|
q.table_schema :: text,
|
|
q.table_name :: text,
|
|
q.constraint_name :: text,
|
|
min(q.constraint_oid) :: integer as constraint_oid,
|
|
min(q.ref_table_table_schema) :: text as ref_table_table_schema,
|
|
min(q.ref_table) :: text as ref_table,
|
|
json_object_agg(ac.attname, afc.attname) as column_mapping,
|
|
min(q.confupdtype) :: text as on_update,
|
|
min(q.confdeltype) :: text as on_delete
|
|
FROM
|
|
(SELECT
|
|
ctn.nspname AS table_schema,
|
|
ct.relname AS table_name,
|
|
r.conrelid AS table_id,
|
|
r.conname as constraint_name,
|
|
r.oid as constraint_oid,
|
|
cftn.nspname AS ref_table_table_schema,
|
|
cft.relname as ref_table,
|
|
r.confrelid as ref_table_id,
|
|
r.confupdtype,
|
|
r.confdeltype,
|
|
UNNEST (r.conkey) AS column_id,
|
|
UNNEST (r.confkey) AS ref_column_id
|
|
FROM
|
|
pg_catalog.pg_constraint r
|
|
JOIN pg_catalog.pg_class ct
|
|
ON r.conrelid = ct.oid
|
|
JOIN pg_catalog.pg_namespace ctn
|
|
ON ct.relnamespace = ctn.oid
|
|
JOIN pg_catalog.pg_class cft
|
|
ON r.confrelid = cft.oid
|
|
JOIN pg_catalog.pg_namespace cftn
|
|
ON cft.relnamespace = cftn.oid
|
|
WHERE
|
|
r.contype = 'f'
|
|
) q
|
|
JOIN pg_catalog.pg_attribute ac
|
|
ON q.column_id = ac.attnum
|
|
AND q.table_id = ac.attrelid
|
|
JOIN pg_catalog.pg_attribute afc
|
|
ON q.ref_column_id = afc.attnum
|
|
AND q.ref_table_id = afc.attrelid
|
|
GROUP BY q.table_schema, q.table_name, q.constraint_name;
|