{"id":377,"date":"2024-07-31T13:43:21","date_gmt":"2024-07-31T13:43:21","guid":{"rendered":"http:\/\/77interactive.com\/?p=377"},"modified":"2024-07-31T14:21:57","modified_gmt":"2024-07-31T14:21:57","slug":"compare-perms-in-postgresql","status":"publish","type":"post","link":"http:\/\/77interactive.com\/?p=377","title":{"rendered":"Compare perms in PostgreSQL"},"content":{"rendered":"\n<p>The following script compares permissions between two roles in PostgreSQL<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>WITH role_permissions AS (\n  SELECT\n    n.nspname AS schema_name,\n    c.relname AS object_name,\n    c.relkind AS object_type,\n    p.rolname AS role_name,\n    COALESCE(ac.privilege_type, '') AS privilege\n  FROM\n    pg_namespace n\n    JOIN pg_class c ON n.oid = c.relnamespace\n    JOIN information_schema.role_table_grants ac ON c.relname = ac.table_name AND n.nspname = ac.table_schema\n    RIGHT JOIN pg_roles p ON ac.grantee = p.rolname\n  WHERE\n    n.nspname = '&lt;your_schema_name&gt;'\n  UNION ALL\n  SELECT\n    n.nspname AS schema_name,\n    p.proname AS object_name,\n    'f' AS object_type,\n    r.rolname AS role_name,\n    COALESCE(a.privilege_type, '') AS privilege\n  FROM\n    pg_namespace n\n    JOIN pg_proc p ON n.oid = p.pronamespace\n    JOIN information_schema.routine_privileges a ON p.proname = a.routine_name AND n.nspname = a.routine_schema\n    RIGHT JOIN pg_roles r ON a.grantee = r.rolname\n  WHERE\n    n.nspname = '&lt;your_schema_name&gt;'\n)\nSELECT\n  rp1.schema_name,\n  rp1.object_name,\n  CASE rp1.object_type\n    WHEN 'r' THEN 'TABLE'\n    WHEN 'v' THEN 'VIEW'\n    WHEN 'S' THEN 'SEQUENCE'\n    WHEN 'f' THEN 'FUNCTION'\n    ELSE 'UNKNOWN'\n  END AS object_type,\n  rp1.role_name AS role1,\n  rp1.privilege AS role1_privilege,\n  rp2.role_name AS role2,\n  rp2.privilege AS role2_privilege\nFROM\n  role_permissions rp1\n  FULL OUTER JOIN role_permissions rp2 ON rp1.schema_name = rp2.schema_name\n    AND rp1.object_name = rp2.object_name\n    AND rp1.object_type = rp2.object_type\n    AND rp2.role_name = '&lt;role2_name&gt;'\nWHERE\n  rp1.role_name = '&lt;role1_name&gt;'\n  OR rp2.role_name = '&lt;role2_name&gt;'\nORDER BY\n  rp1.schema_name, rp1.object_name, rp1.object_type;\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Version 2<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>WITH role_permissions AS (\n    SELECT\n        nspname AS schema_name,\n        relname AS object_name,\n        CASE\n            WHEN relkind = 'r' THEN 'table'\n            WHEN relkind = 'v' THEN 'view'\n            WHEN relkind = 'S' THEN 'sequence'\n            ELSE 'unknown'\n        END AS object_type,\n        grantee,\n        privilege_type\n    FROM\n        pg_namespace n\n        JOIN pg_class c ON n.oid = c.relnamespace\n        JOIN information_schema.role_table_grants g ON g.table_schema = n.nspname AND g.table_name = c.relname\n    WHERE\n        n.nspname = 'your_schema_name'\n        AND grantee IN ('role1', 'role2')\n    UNION ALL\n    SELECT\n        nspname AS schema_name,\n        proname AS object_name,\n        'function' AS object_type,\n        grantee,\n        privilege_type\n    FROM\n        pg_namespace n\n        JOIN pg_proc p ON n.oid = p.pronamespace\n        JOIN information_schema.role_routine_grants g ON g.routine_schema = n.nspname AND g.routine_name = p.proname\n    WHERE\n        n.nspname = 'your_schema_name'\n        AND grantee IN ('role1', 'role2')\n)\nSELECT\n    rp1.schema_name,\n    rp1.object_name,\n    rp1.object_type,\n    rp1.privilege_type AS role1_privilege,\n    rp2.privilege_type AS role2_privilege\nFROM\n    role_permissions rp1\n    LEFT JOIN role_permissions rp2\n        ON rp1.schema_name = rp2.schema_name\n        AND rp1.object_name = rp2.object_name\n        AND rp1.object_type = rp2.object_type\n        AND rp2.grantee = 'role2'\nWHERE\n    rp1.grantee = 'role1'\n    AND (rp1.privilege_type IS DISTINCT FROM rp2.privilege_type OR rp2.privilege_type IS NULL)\nORDER BY\n    rp1.schema_name,\n    rp1.object_name,\n    rp1.object_type;<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Version 3<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>WITH role_permissions AS (\n    -- Subquery for Role 1 permissions\n    SELECT\n        'table' AS object_type,\n        table_name,\n        'SELECT' AS permission,\n        grantee AS role_name,\n        privilege_type AS permission_granted\n    FROM\n        information_schema.role_table_grants\n    WHERE\n        table_schema = 'your_schema' AND grantee = 'role1'\n    \n    UNION ALL\n    \n    -- Subquery for Role 2 permissions\n    SELECT\n        'table',\n        table_name,\n        'SELECT',\n        grantee AS role_name,\n        privilege_type\n    FROM\n        information_schema.role_table_grants\n    WHERE\n        table_schema = 'your_schema' AND grantee = 'role2'\n),\n-- Compare permissions between roles\ncomparison AS (\n    SELECT\n        object_type,\n        table_name,\n        permission,\n        COALESCE(role1.permission_granted, 'NULL') AS role1_permissions,\n        COALESCE(role2.permission_granted, 'NULL') AS role2_permissions\n    FROM\n        (SELECT DISTINCT ON (table_name) * FROM role_permissions WHERE role_name = 'role1') AS role1\n    FULL OUTER JOIN\n        (SELECT DISTINCT ON (table_name) * FROM role_permissions WHERE role_name = 'role2') AS role2\n    USING (object_type, table_name, permission)\n)\nSELECT * FROM comparison;\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Version 4<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>WITH object_permissions AS (\n  SELECT\n    'table' AS object_type,\n    table_schema,\n    table_name,\n    grantee,\n    privilege_type\n  FROM information_schema.table_privileges\n  UNION ALL\n  SELECT\n    'function' AS object_type,\n    routine_schema,\n    routine_name,\n    grantee,\n    privilege_type\n  FROM information_schema.routine_privileges\n  UNION ALL\n  SELECT\n    'view' AS object_type,\n    table_schema,\n    table_name,\n    grantee,\n    privilege_type\n  FROM information_schema.view_privileges\n  UNION ALL\n  SELECT\n    'sequence' AS object_type,\n    nspname AS table_schema,\n    relname AS table_name,\n    grantee,\n    'USAGE' AS privilege_type -- Simplified for sequences, adjust as needed\n  FROM pg_catalog.pg_sequence\n  JOIN pg_catalog.pg_namespace ON pg_sequence.seqnamespace = pg_namespace.oid\n)\nSELECT\n  op1.object_type,\n  op1.table_schema,\n  op1.table_name,\n  op1.privilege_type AS role1_permission,\n  op2.privilege_type AS role2_permission\nFROM object_permissions op1\nFULL OUTER JOIN object_permissions op2\n  ON op1.object_type = op2.object_type\n  AND op1.table_schema = op2.table_schema\n  AND op1.table_name = op2.table_name\n  AND op1.grantee = 'role1'\n  AND op2.grantee = 'role2'\nWHERE op1.table_schema = 'your_schema'\n  AND (op1.grantee IS NOT NULL OR op2.grantee IS NOT NULL);\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Compare permissions between two roles in PostgreSQLyea.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[44,17,18,45],"class_list":["post-377","post","type-post","status-publish","format-standard","hentry","category-postgresql","tag-permissions","tag-postgres","tag-postgresql","tag-security"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Compare perms in PostgreSQL - 77 Interactive<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/77interactive.com\/?p=377\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" 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