{"id":2306,"date":"2025-03-08T19:11:49","date_gmt":"2025-03-08T12:11:49","guid":{"rendered":"https:\/\/www.pgtutorial.com\/?page_id=2306"},"modified":"2025-03-10T07:53:57","modified_gmt":"2025-03-10T00:53:57","slug":"postgresql-grant","status":"publish","type":"page","link":"https:\/\/www.pgtutorial.com\/postgresql-database-administration\/postgresql-grant\/","title":{"rendered":"PostgreSQL GRANT Statement"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: In this tutorial, you&#8217;ll learn how to grant privileges on database objects to a role using the PostgreSQL <code>GRANT<\/code> statement.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"postgresql-grant-statement-overview\" id='postgresql-grant-statement-overview'>PostgreSQL GRANT Statement Overview <a href=\"#postgresql-grant-statement-overview\" class=\"anchor\" id=\"postgresql-grant-statement-overview\" title=\"Anchor for PostgreSQL GRANT Statement Overview\">#<\/a><\/h2>\n\n\n\n<p>The&nbsp;<code>GRANT<\/code>&nbsp;statement grants one or more privileges on database objects such as tables, schemas, <a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-view\/\">views<\/a>, <a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-sequence\/\">sequences<\/a>, and <a href=\"https:\/\/www.pgtutorial.com\/plpgsql\/plpgsql-functions\/\">functions<\/a> to roles.<\/p>\n\n\n\n<p>Here&#8217;s the basic syntax of the&nbsp;<code>GRANT<\/code>&nbsp;statement:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">GRANT<\/span> privilege_list | <span class=\"hljs-keyword\">ALL<\/span>\n<span class=\"hljs-keyword\">ON<\/span> object_type object_name\n<span class=\"hljs-keyword\">TO<\/span> role_name\n&#91;<span class=\"hljs-keyword\">WITH<\/span> <span class=\"hljs-keyword\">GRANT<\/span> <span class=\"hljs-keyword\">OPTION<\/span>];<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>In this syntax:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>First, specify one or more privileges you want to grant to a role after the&nbsp;<code>GRANT<\/code>&nbsp;keyword. If you want to grant all privileges on a database object to a role, you can use the&nbsp;<code>ALL<\/code>&nbsp;keyword instead of listing all the privileges.<\/li>\n\n\n\n<li>Second, provide the object type (table, schema, etc.) and the object name to which the privileges apply. If the object type is a table, you can ignore the&nbsp;<code>TABLE<\/code>&nbsp;keyword.<\/li>\n\n\n\n<li>Third, specify a role that receives the privileges.<\/li>\n\n\n\n<li>Finally, use the&nbsp;<code>WITH GRANT OPTION<\/code>&nbsp;to allow the role to grant the granted privileges to other roles.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id='object-types-and-privileges'>Object types and privileges <a href=\"#object-types-and-privileges\" class=\"anchor\" id=\"object-types-and-privileges\" title=\"Anchor for Object types and privileges\">#<\/a><\/h2>\n\n\n\n<p>The following table shows the object type and privileges of each:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Object Type<\/th><th>Privilege<\/th><th>Example<\/th><\/tr><\/thead><tbody><tr><td><strong>Table<\/strong><\/td><td><code>SELECT<\/code>, <code>INSERT<\/code>, <code>UPDATE<\/code>, <code>DELETE<\/code>, <code>TRUNCATE<\/code>, <code>REFERENCES<\/code>, <code>TRIGGER<\/code><\/td><td><code>GRANT SELECT ON table_name TO role;<\/code><\/td><\/tr><tr><td><strong>Schema<\/strong><\/td><td><code>USAGE<\/code>, <code>CREATE<\/code><\/td><td><code>GRANT USAGE, CREATE ON SCHEMA schema_name TO role;<\/code><\/td><\/tr><tr><td><strong>Sequence<\/strong><\/td><td><code>USAGE<\/code>, <code>SELECT<\/code>, <code>UPDATE<\/code><\/td><td><code>GRANT USAGE, SELECT ON SEQUENCE seq_name TO role;<\/code><\/td><\/tr><tr><td><strong>Function<\/strong><\/td><td><code>EXECUTE<\/code><\/td><td><code>GRANT EXECUTE ON FUNCTION fn() TO role;<\/code><\/td><\/tr><tr><td><strong>View<\/strong><\/td><td><code>SELECT<\/code><\/td><td><code>GRANT SELECT ON view_name TO role;<\/code><\/td><\/tr><tr><td><strong>Role<\/strong><\/td><td>Role Membership<\/td><td><code>GRANT role1 TO role2;<\/code><\/td><\/tr><tr><td><strong>Public Access<\/strong><\/td><td>Open access<\/td><td><code>GRANT SELECT ON table_name TO PUBLIC;<\/code><\/td><\/tr><tr><td><strong>Domain<\/strong><\/td><td><code>USAGE<\/code><\/td><td><code>GRANT USAGE ON DOMAIN my_domain TO my_role;<\/code><\/td><\/tr><tr><td><strong>Foreign Data Wrapper<\/strong><\/td><td><code>USAGE<\/code><\/td><td><code>GRANT USAGE ON FOREIGN DATA WRAPPER my_fdw TO role1;<\/code><br><\/td><\/tr><tr><td><strong>Foreign Server<\/strong><\/td><td><code>USAGE<\/code><\/td><td><code>GRANT USAGE ON FOREIGN SERVER my_foreign_server TO role1;<\/code><\/td><\/tr><tr><td><strong>Language<\/strong><\/td><td><code>USAGE<\/code><\/td><td><code>GRANT USAGE ON LANGUAGE plpython3u TO role1;<\/code><\/td><\/tr><tr><td><strong>Large Object<\/strong><\/td><td><code>SELECT<\/code>, <code>UPDATE<\/code><\/td><td><code>GRANT USAGE ON LARGE OBJECT 12345 TO role1;<\/code><\/td><\/tr><tr><td><strong>Parameter<\/strong><\/td><td><code>SET<\/code>, <code>ALERT SYSTEM<\/code><\/td><td><code>GRANT SET ON PARAMETER search_path TO role1;<br>GRANT ALTER SYSTEM ON PARAMETER work_mem TO role1;<\/code><\/td><\/tr><tr><td><strong>Tablespace<\/strong><\/td><td><code>CREATE<\/code><\/td><td><code>GRANT CREATE ON TABLESPACE my_tablespace TO role1;<\/code><\/td><\/tr><tr><td><strong>Type<\/strong><\/td><td><code>USAGE<\/code><\/td><td><code>GRANT USAGE ON TYPE my_custom_type TO role1;<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"creating-a-new-role\" id='creating-a-new-role'>Creating a new role <a href=\"#creating-a-new-role\" class=\"anchor\" id=\"creating-a-new-role\" title=\"Anchor for Creating a new role\">#<\/a><\/h2>\n\n\n\n<p>First, connect to the PostgreSQL server using&nbsp;<code>psql<\/code>:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-2\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\">psql -U postgres -d inventory<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-2\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Second, <a href=\"https:\/\/www.pgtutorial.com\/postgresql-database-administration\/postgresql-create-role\/\">create a new role<\/a> named&nbsp;<code>calf<\/code>&nbsp;with the <code>LOGIN<\/code> privilege:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-3\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">CREATE<\/span> <span class=\"hljs-keyword\">ROLE<\/span> calf\n<span class=\"hljs-keyword\">WITH<\/span> <span class=\"hljs-keyword\">LOGIN<\/span> <span class=\"hljs-keyword\">PASSWORD<\/span> <span class=\"hljs-string\">'securepassword'<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-3\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Third, <a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-create-table\/\">create a new table<\/a> called&nbsp;<code>scanners<\/code>&nbsp;that stores the scanning devices:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-4\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">CREATE<\/span> <span class=\"hljs-keyword\">TABLE<\/span> scanners(\n    id <span class=\"hljs-type\">INT<\/span> <span class=\"hljs-keyword\">GENERATED<\/span> <span class=\"hljs-keyword\">ALWAYS<\/span> <span class=\"hljs-keyword\">AS<\/span> <span class=\"hljs-keyword\">IDENTITY<\/span> <span class=\"hljs-keyword\">PRIMARY KEY<\/span>,\n    serial_no <span class=\"hljs-type\">VARCHAR<\/span>(<span class=\"hljs-number\">25<\/span>) <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">NULL<\/span>,\n    warehouse_id <span class=\"hljs-type\">INT<\/span> <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">NULL<\/span>\n);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-4\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h2 class=\"wp-block-heading\" id=\"granting-privileges-on-tables\" id='granting-privileges-on-tables'>Granting privileges on tables <a href=\"#granting-privileges-on-tables\" class=\"anchor\" id=\"granting-privileges-on-tables\" title=\"Anchor for Granting privileges on tables\">#<\/a><\/h2>\n\n\n\n<p>First, attempt to <a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-insert\/\">insert a new row<\/a> into the&nbsp;<code>scanners<\/code>&nbsp;table using the role&nbsp;<code>calf<\/code>:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-5\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">INSERT<\/span> <span class=\"hljs-keyword\">INTO<\/span> scanners(serial_no, warehouse_id) \n<span class=\"hljs-keyword\">VALUES<\/span>(<span class=\"hljs-string\">'US-GXZSYU'<\/span>, <span class=\"hljs-number\">1<\/span>);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-5\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Error:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-6\" data-shcb-language-name=\"plaintext\" data-shcb-language-slug=\"plaintext\"><span><code class=\"hljs language-plaintext\">ERROR: permission denied for table scanners<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-6\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">plaintext<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">plaintext<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Second, grant the&nbsp;<code>INSERT<\/code>&nbsp;privilege on the&nbsp;<code>scanners<\/code>&nbsp;table to the&nbsp;<code>calf<\/code>&nbsp;using the role&nbsp;<code>postgres<\/code>:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-7\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">GRANT<\/span> <span class=\"hljs-keyword\">INSERT<\/span>\n<span class=\"hljs-keyword\">ON<\/span> scanners\n<span class=\"hljs-keyword\">TO<\/span> calf;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-7\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Third, use the role&nbsp;<code>calf<\/code>&nbsp;to insert data into the&nbsp;<code>scanners<\/code>&nbsp;table again:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-8\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">INSERT<\/span> <span class=\"hljs-keyword\">INTO<\/span> scanners(serial_no, warehouse_id) \n<span class=\"hljs-keyword\">VALUES<\/span>(<span class=\"hljs-string\">'US-GXZSYU'<\/span>, <span class=\"hljs-number\">1<\/span>);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-8\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Now, role&nbsp;<code>calf<\/code>&nbsp;can insert a new row into the&nbsp;<code>scanners<\/code>&nbsp;table.<\/p>\n\n\n\n<p>However, the role&nbsp;<code>calf<\/code>&nbsp;cannot do anything else to the&nbsp;<code>scanners<\/code>&nbsp;table like <a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-select\/\">selecting<\/a> and <a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-update\/\">updating<\/a> data.<\/p>\n\n\n\n<p>Fourth, grant all privileges on the&nbsp;<code>scanners<\/code>&nbsp;table to the role&nbsp;<code>calf<\/code>:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-9\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">GRANT<\/span> <span class=\"hljs-keyword\">ALL<\/span>\n<span class=\"hljs-keyword\">ON<\/span> scanners\n<span class=\"hljs-keyword\">TO<\/span> calf;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-9\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>The role&nbsp;<code>calf<\/code>&nbsp;can have full privileges on the&nbsp;<code>scanners<\/code>&nbsp;table.<\/p>\n\n\n\n<p>Fifth, retrieve data from the&nbsp;<code>scanners<\/code>&nbsp;table:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-10\" data-shcb-language-name=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">SELECT<\/span> * <span class=\"hljs-keyword\">FROM<\/span> scanners;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-10\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PostgreSQL SQL dialect and PL\/pgSQL<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">pgsql<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-11\" data-shcb-language-name=\"plaintext\" data-shcb-language-slug=\"plaintext\"><span><code class=\"hljs language-plaintext\"> id | serial_no | warehouse_id\n----+-----------+--------------\n  1 | US-GXZSYU |            1<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-11\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">plaintext<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">plaintext<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<h2 class=\"wp-block-heading\" id=\"summary\" id='summary'>Summary <a href=\"#summary\" class=\"anchor\" id=\"summary\" title=\"Anchor for Summary\">#<\/a><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use the <code>GRANT<\/code> statement to grant one or more privileges on a database object to a role.<\/li>\n<\/ul>\n<div class=\"helpful-block-content\" data-title=\"\">\n\t<header>\n\t\t<div class=\"wth-question\">Was this tutorial helpful ?<\/div>\n\t\t<div class=\"wth-thumbs\">\n\t\t\t<button\n\t\t\t\tdata-post=\"2306\"\n\t\t\t\tdata-post-url=\"https:\/\/www.pgtutorial.com\/postgresql-database-administration\/postgresql-grant\/\"\n\t\t\t\tdata-post-title=\"PostgreSQL GRANT Statement\"\n\t\t\t\tdata-response=\"1\"\n\t\t\t\tclass=\"wth-btn-rounded wth-yes-btn\"\n\t\t\t>\n\t\t\t\t<svg\n\t\t\t\t\txmlns=\"http:\/\/www.w3.org\/2000\/svg\"\n\t\t\t\t\tviewBox=\"0 0 24 24\"\n\t\t\t\t\tfill=\"none\"\n\t\t\t\t\tstroke=\"currentColor\"\n\t\t\t\t\tstroke-width=\"2\"\n\t\t\t\t\tstroke-linecap=\"round\"\n\t\t\t\t\tstroke-linejoin=\"round\"\n\t\t\t\t\tclass=\"feather feather-thumbs-up block w-full 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