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refactor: Simplify pks_uniques_cols

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This commit is contained in:
Wolfgang Walther
2024-07-13 22:26:36 +02:00
committed by Wolfgang Walther
parent 50bdb6a3de
commit d7da18147b
1 changed files with 9 additions and 15 deletions
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src/PostgREST/SchemaCache.hs
+9 -15
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@@ -756,34 +756,29 @@ allM2OandO2ORels =
WITH WITH
pks_uniques_cols AS ( pks_uniques_cols AS (
SELECT SELECT
connamespace,
conrelid, conrelid,
jsonb_agg(column_info.cols) as cols array_agg(key order by key) as cols
FROM pg_constraint FROM pg_constraint,
JOIN lateral ( LATERAL unnest(conkey) AS _(key)
SELECT array_agg(cols.attname order by cols.attnum) as cols
FROM ( select unnest(conkey) as col) _
JOIN pg_attribute cols on cols.attrelid = conrelid and cols.attnum = col
) column_info ON TRUE
WHERE WHERE
contype IN ('p', 'u') and contype IN ('p', 'u')
connamespace <> 'pg_catalog'::regnamespace AND connamespace <> 'pg_catalog'::regnamespace
GROUP BY connamespace, conrelid GROUP BY oid, conrelid
) )
SELECT SELECT
ns1.nspname AS table_schema, ns1.nspname AS table_schema,
tab.relname AS table_name, tab.relname AS table_name,
ns2.nspname AS foreign_table_schema, ns2.nspname AS foreign_table_schema,
other.relname AS foreign_table_name, other.relname AS foreign_table_name,
(ns1.nspname, tab.relname) = (ns2.nspname, other.relname) AS is_self, traint.conrelid = traint.confrelid AS is_self,
traint.conname AS constraint_name, traint.conname AS constraint_name,
column_info.cols_and_fcols, column_info.cols_and_fcols,
(column_info.cols IN (SELECT * FROM jsonb_array_elements(pks_uqs.cols))) AS one_to_one (column_info.cols IN (SELECT cols FROM pks_uniques_cols WHERE conrelid = traint.conrelid)) AS one_to_one
FROM pg_constraint traint FROM pg_constraint traint
JOIN LATERAL ( JOIN LATERAL (
SELECT SELECT
array_agg(row(cols.attname, refs.attname) order by ord) AS cols_and_fcols, array_agg(row(cols.attname, refs.attname) order by ord) AS cols_and_fcols,
jsonb_agg(cols.attname order by cols.attnum) AS cols array_agg(cols.attnum order by cols.attnum) AS cols
FROM unnest(traint.conkey, traint.confkey) WITH ORDINALITY AS _(col, ref, ord) FROM unnest(traint.conkey, traint.confkey) WITH ORDINALITY AS _(col, ref, ord)
JOIN pg_attribute cols ON cols.attrelid = traint.conrelid AND cols.attnum = col JOIN pg_attribute cols ON cols.attrelid = traint.conrelid AND cols.attnum = col
JOIN pg_attribute refs ON refs.attrelid = traint.confrelid AND refs.attnum = ref JOIN pg_attribute refs ON refs.attrelid = traint.confrelid AND refs.attnum = ref
@@ -792,7 +787,6 @@ allM2OandO2ORels =
JOIN pg_class tab ON tab.oid = traint.conrelid JOIN pg_class tab ON tab.oid = traint.conrelid
JOIN pg_class other ON other.oid = traint.confrelid JOIN pg_class other ON other.oid = traint.confrelid
JOIN pg_namespace ns2 ON ns2.oid = other.relnamespace JOIN pg_namespace ns2 ON ns2.oid = other.relnamespace
LEFT JOIN pks_uniques_cols pks_uqs ON pks_uqs.connamespace = traint.connamespace AND pks_uqs.conrelid = traint.conrelid
WHERE traint.contype = 'f' WHERE traint.contype = 'f'
AND traint.conparentid = 0 AND traint.conparentid = 0
ORDER BY traint.conrelid, traint.conname|] ORDER BY traint.conrelid, traint.conname|]