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graphql-engine/server/src-rsr/migrations/19_to_20.sql

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ALTER TABLE hdb_catalog.hdb_table
ADD COLUMN is_enum boolean NOT NULL DEFAULT false;
DROP TRIGGER hdb_table_oid_check ON hdb_catalog.hdb_table;
DROP FUNCTION hdb_catalog.hdb_table_oid_check();
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,
json_agg(ac.attname) as columns,
json_agg(afc.attname) as ref_columns
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;
CREATE VIEW hdb_catalog.hdb_column AS
WITH primary_key_references AS (
SELECT fkey.table_schema AS src_table_schema
, fkey.table_name AS src_table_name
, fkey.columns->>0 AS src_column_name
, json_agg(json_build_object(
'schema', fkey.ref_table_table_schema,
'name', fkey.ref_table
)) AS ref_tables
FROM hdb_catalog.hdb_foreign_key_constraint AS fkey
JOIN hdb_catalog.hdb_primary_key AS pkey
ON pkey.table_schema = fkey.ref_table_table_schema
AND pkey.table_name = fkey.ref_table
AND pkey.columns::jsonb = fkey.ref_columns::jsonb
WHERE json_array_length(fkey.columns) = 1
GROUP BY fkey.table_schema
, fkey.table_name
, fkey.columns->>0)
SELECT columns.table_schema
, columns.table_name
, columns.column_name AS name
, columns.udt_name AS type
, columns.is_nullable
, columns.ordinal_position
, coalesce(pkey_refs.ref_tables, '[]') AS primary_key_references
FROM information_schema.columns
LEFT JOIN primary_key_references AS pkey_refs
ON columns.table_schema = pkey_refs.src_table_schema
AND columns.table_name = pkey_refs.src_table_name
AND columns.column_name = pkey_refs.src_column_name;
CREATE OR REPLACE VIEW hdb_catalog.hdb_table_info_agg AS (
select
tables.table_name as table_name,
tables.table_schema as table_schema,
coalesce(columns.columns, '[]') as columns,
coalesce(pk.columns, '[]') as primary_key_columns,
coalesce(constraints.constraints, '[]') as constraints,
coalesce(views.view_info, 'null') as view_info
from
information_schema.tables as tables
left outer join (
select
c.table_name,
c.table_schema,
json_agg(
json_build_object(
'name', name,
'type', type,
'is_nullable', is_nullable :: boolean,
'references', primary_key_references
)
) as columns
from
hdb_catalog.hdb_column c
group by
c.table_schema,
c.table_name
) columns on (
tables.table_schema = columns.table_schema
AND tables.table_name = columns.table_name
)
left outer join (
select * from hdb_catalog.hdb_primary_key
) pk on (
tables.table_schema = pk.table_schema
AND tables.table_name = pk.table_name
)
left outer join (
select
c.table_schema,
c.table_name,
json_agg(constraint_name) as constraints
from
information_schema.table_constraints c
where
c.constraint_type = 'UNIQUE'
or c.constraint_type = 'PRIMARY KEY'
group by
c.table_schema,
c.table_name
) constraints on (
tables.table_schema = constraints.table_schema
AND tables.table_name = constraints.table_name
)
left outer join (
select
table_schema,
table_name,
json_build_object(
'is_updatable',
(is_updatable::boolean OR is_trigger_updatable::boolean),
'is_deletable',
(is_updatable::boolean OR is_trigger_deletable::boolean),
'is_insertable',
(is_insertable_into::boolean OR is_trigger_insertable_into::boolean)
) as view_info
from
information_schema.views v
) views on (
tables.table_schema = views.table_schema
AND tables.table_name = views.table_name
)
);