{"id":843,"date":"2024-12-12T09:32:02","date_gmt":"2024-12-12T02:32:02","guid":{"rendered":"https:\/\/www.pgtutorial.com\/?page_id=843"},"modified":"2025-01-03T14:46:00","modified_gmt":"2025-01-03T07:46:00","slug":"postgresql-rename-column","status":"publish","type":"page","link":"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-rename-column\/","title":{"rendered":"PostgreSQL Rename Column"},"content":{"rendered":"\n<p><strong>Summary<\/strong>: in this tutorial, you&#8217;ll learn how to use the PostgreSQL <code>ALTER TABLE RENAME COLUMN<\/code> statement to rename a column of a table.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='getting-started-with-the-postgresql-alter-table-rename-column-statement'>Getting Started with the PostgreSQL ALTER TABLE RENAME COLUMN Statement <a href=\"#getting-started-with-the-postgresql-alter-table-rename-column-statement\" class=\"anchor\" id=\"getting-started-with-the-postgresql-alter-table-rename-column-statement\" title=\"Anchor for Getting Started with the PostgreSQL ALTER TABLE RENAME COLUMN Statement\">#<\/a><\/h2>\n\n\n\n<p>The <code>ALTER TABLE RENAME COLUMN<\/code> statement allows you to rename a table column.<\/p>\n\n\n\n<p>Here&#8217;s the syntax of the <code>ALTER TABLE RENAME COLUMN<\/code> 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\">ALTER<\/span> <span class=\"hljs-keyword\">TABLE<\/span> <span class=\"hljs-built_in\">table_name<\/span>\n<span class=\"hljs-keyword\">RENAME<\/span> <span class=\"hljs-keyword\">COLUMN<\/span> <span class=\"hljs-built_in\">column_name<\/span> \n<span class=\"hljs-keyword\">TO<\/span> new_column;<\/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, provide the name of the table in the <code>ALTER TABLE<\/code> clause.<\/li>\n\n\n\n<li>Second, specify the column you want to change in the <code>RENAME COLUMN<\/code> clause.<\/li>\n\n\n\n<li>Third, specify the new column name for the column in the <code>TO<\/code> clause.<\/li>\n<\/ul>\n\n\n\n<p>To make it shorter, you can omit the <code>COLUMN<\/code> keyword in the <code>RENAME COLUMN<\/code> like this:<\/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\"><span class=\"hljs-keyword\">ALTER<\/span> <span class=\"hljs-keyword\">TABLE<\/span> <span class=\"hljs-built_in\">table_name<\/span>\n<span class=\"hljs-keyword\">RENAME<\/span> <span class=\"hljs-built_in\">column_name<\/span> \n<span class=\"hljs-keyword\">TO<\/span> new_column;<\/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>If the column you change has references such as <a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-view\/\">views<\/a>, <a href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-foreign-key\/\">foreign key constraints<\/a>, triggers, user-defined functions, and stored procedures, PostgreSQL automatically changes the column names in these objects.<\/p>\n\n\n\n<p>When you rename columns, updating your application code to reflect these changes is crucial. If your application tries to access old columns, it may cause unexpected behavior or errors.<\/p>\n\n\n\n<p>To streamline the renaming column process, you can use a migration library. A migration can help manage schema changes efficiently. Typically, a migration library allows you to synchronize the database version and application code during deployment.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='renaming-column-example'>Renaming Column Example <a href=\"#renaming-column-example\" class=\"anchor\" id=\"renaming-column-example\" title=\"Anchor for Renaming Column Example\">#<\/a><\/h2>\n\n\n\n<p>First, open your terminal and use <code>psql<\/code> to connect to the PostgreSQL server:<\/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\">psql -U postgres<\/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>Second, create a table called <code>sales_returns<\/code> to store the sales returns from customers:<\/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> sales_returns (\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  <span class=\"hljs-type\">date<\/span> <span class=\"hljs-type\">DATE<\/span> <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">NULL<\/span>,\n  product_name <span class=\"hljs-type\">VARCHAR<\/span>(<span class=\"hljs-number\">255<\/span>) <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">NULL<\/span>,\n  quantity <span class=\"hljs-type\">INT<\/span> <span class=\"hljs-keyword\">NOT<\/span> <span class=\"hljs-keyword\">NULL<\/span> <span class=\"hljs-keyword\">DEFAULT<\/span> <span class=\"hljs-number\">1<\/span>,\n  order_id <span class=\"hljs-type\">INT<\/span>,\n  reason <span class=\"hljs-type\">VARCHAR<\/span>(<span class=\"hljs-number\">255<\/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<p>Third, change the name of the <code>order_id<\/code> column to <code>sales_order_id<\/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\">ALTER<\/span> <span class=\"hljs-keyword\">TABLE<\/span> sales_returns \n<span class=\"hljs-keyword\">RENAME<\/span> order_id \n<span class=\"hljs-keyword\">TO<\/span> sales_order_id;<\/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>Finally, verify the changes:<\/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\">\\d sales_returns<\/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<h2 class=\"wp-block-heading\" id='renaming-a-column-referenced-by-a-view'>Renaming a Column Referenced by a View <a href=\"#renaming-a-column-referenced-by-a-view\" class=\"anchor\" id=\"renaming-a-column-referenced-by-a-view\" title=\"Anchor for Renaming a Column Referenced by a View\">#<\/a><\/h2>\n\n\n\n<p>First, create a view <code>sales_return_reports<\/code> based on the <code>sales_returns<\/code> table:<\/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\">CREATE<\/span> <span class=\"hljs-keyword\">VIEW<\/span> sales_return_reports <span class=\"hljs-keyword\">AS<\/span>\n<span class=\"hljs-keyword\">SELECT<\/span>\n  product_name,\n  <span class=\"hljs-type\">date<\/span>,\n  SUM(quantity)\n<span class=\"hljs-keyword\">FROM<\/span>\n  sales_returns\n<span class=\"hljs-keyword\">GROUP<\/span> <span class=\"hljs-keyword\">BY<\/span>\n  product_name,\n  <span class=\"hljs-type\">date<\/span>;<\/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>Second, rename the <code>date<\/code> column to <code>return_date<\/code>:<\/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\">ALTER<\/span> <span class=\"hljs-keyword\">TABLE<\/span> sales_returns \n<span class=\"hljs-keyword\">RENAME<\/span> <span class=\"hljs-type\">date<\/span> \n<span class=\"hljs-keyword\">TO<\/span> return_date;<\/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>Third, check the <code>sales_return_reports<\/code> view:<\/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\">\\d+ sales_return_reports<\/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>Output:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-10\" data-shcb-language-name=\"plaintext\" data-shcb-language-slug=\"plaintext\"><span><code class=\"hljs language-plaintext\">                               View \"public.sales_return_reports\"\n    Column    |          Type          | Collation | Nullable | Default | Storage  | Description\n--------------+------------------------+-----------+----------+---------+----------+-------------\n product_name | character varying(255) |           |          |         | extended |\n date         | date                   |           |          |         | plain    |\n sum          | bigint                 |           |          |         | plain    |\nView definition:\n SELECT product_name,\n    return_date AS date,\n    sum(quantity) AS sum\n   FROM sales_returns\n  GROUP BY product_name, return_date;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-10\"><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>The output indicates that the <code>date<\/code> column changed to <code>return_date<\/code> in the view&#8217;s definition. However, the view still uses <code>date<\/code> as the column alias.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='renaming-a-column-if-exists'>Renaming a Column If Exists <a href=\"#renaming-a-column-if-exists\" class=\"anchor\" id=\"renaming-a-column-if-exists\" title=\"Anchor for Renaming a Column If Exists\">#<\/a><\/h2>\n\n\n\n<p>PostgreSQL does not support the syntax for the <code>ALTER TABLE RENAME COLUMN IF EXISTS<\/code> statement. You&#8217;ll encounter an error if you rename a column that does not exist.<\/p>\n\n\n\n<p>If you want to rename a column if it exists, you can define a user-defined function:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-11\" 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\">OR REPLACE<\/span> <span class=\"hljs-keyword\">FUNCTION<\/span> fn_rename_column(\n    from_table <span class=\"hljs-type\">VARCHAR<\/span>, \n    old_column <span class=\"hljs-type\">VARCHAR<\/span>, \n    new_column <span class=\"hljs-type\">VARCHAR<\/span>\n)\n<span class=\"hljs-keyword\">RETURNS<\/span> <span class=\"hljs-type\">VOID<\/span>\n<span class=\"hljs-keyword\">AS<\/span>\n$$<span class=\"pgsql\">\n<span class=\"hljs-keyword\">BEGIN<\/span>\n    <span class=\"hljs-keyword\">IF<\/span> <span class=\"hljs-keyword\">EXISTS<\/span> (<span class=\"hljs-keyword\">SELECT<\/span> *\n        <span class=\"hljs-keyword\">FROM<\/span> information_schema.<span class=\"hljs-keyword\">columns<\/span>\n        <span class=\"hljs-keyword\">WHERE<\/span> <span class=\"hljs-built_in\">table_name<\/span> = from_table <span class=\"hljs-keyword\">AND<\/span> <span class=\"hljs-built_in\">column_name<\/span> = old_column)\n    <span class=\"hljs-keyword\">THEN<\/span>\n        <span class=\"hljs-keyword\">ALTER<\/span> <span class=\"hljs-keyword\">TABLE<\/span> from_table \n        <span class=\"hljs-keyword\">RENAME<\/span> <span class=\"hljs-keyword\">COLUMN<\/span> old_column <span class=\"hljs-keyword\">TO<\/span> new_column;\n    <span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">IF<\/span>;\n<span class=\"hljs-keyword\">END<\/span> $$<\/span>; \n<span class=\"hljs-keyword\">LANGUAGE<\/span> plpgsql;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-11\"><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 <code>fn_rename_column<\/code> function checks if the column exists before executing the <code>ALTER TABLE<\/code> statement.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" 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>ALTER TABLE RENAME COLUMN<\/code> statement to rename a column.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id='quiz'>Quiz <a href=\"#quiz\" class=\"anchor\" id=\"quiz\" title=\"Anchor for Quiz\">#<\/a><\/h2>\n\n\n\n<iframe loading=\"lazy\"\n  name=\"quiz\"\n  src=\"\/quiz\/?quiz=rename-column\"\n  height=\"700\"\n  width=\"600\"\n  class=\"iframe\"\n><\/iframe>\n\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=\"843\"\n\t\t\t\tdata-post-url=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-rename-column\/\"\n\t\t\t\tdata-post-title=\"PostgreSQL Rename Column\"\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 h-full\"\n\t\t\t\t>\n\t\t\t\t\t<path\n\t\t\t\t\t\td=\"M14 9V5a3 3 0 0 0-3-3l-4 9v11h11.28a2 2 0 0 0 2-1.7l1.38-9a2 2 0 0 0-2-2.3zM7 22H4a2 2 0 0 1-2-2v-7a2 2 0 0 1 2-2h3\"\n\t\t\t\t\t><\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t<span class=\"sr-only\"> Yes <\/span>\n\t\t\t<\/button>\n\n\t\t\t<button\n\t\t\t\tdata-response=\"0\"\n\t\t\t\tdata-post=\"843\"\n\t\t\t\tdata-post-url=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-rename-column\/\"\n\t\t\t\tdata-post-title=\"PostgreSQL Rename Column\"\n\t\t\t\tclass=\"wth-btn-rounded wth-no-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>\n\t\t\t\t\t<path\n\t\t\t\t\t\td=\"M10 15v4a3 3 0 0 0 3 3l4-9V2H5.72a2 2 0 0 0-2 1.7l-1.38 9a2 2 0 0 0 2 2.3zm7-13h2.67A2.31 2.31 0 0 1 22 4v7a2.31 2.31 0 0 1-2.33 2H17\"\n\t\t\t\t\t><\/path>\n\t\t\t\t<\/svg>\n\t\t\t\t<span class=\"sr-only\"> No <\/span>\n\t\t\t<\/button>\n\t\t<\/div>\n\t<\/header>\n\n\t<div class=\"wth-form hidden\">\n\t\t<div class=\"wth-form-wrapper\">\n\t\t\t<div class=\"wth-title\"><\/div>\n\t\t\t\n\t\t\t<textarea class=\"wth-message\"><\/textarea>\n\n\t\t\t<button class=\"btn btn-primary wth-btn-submit\">Send<\/button>\n\t\t\t<button class=\"btn wth-btn-cancel\">Cancel<\/button>\n\t\t\n\t\t<\/div>\n\t<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Summary: in this tutorial, you&#8217;ll learn how to use the PostgreSQL ALTER TABLE RENAME COLUMN statement to rename a column of a table. Getting Started with the PostgreSQL ALTER TABLE RENAME COLUMN Statement # The ALTER TABLE RENAME COLUMN statement allows you to rename a table column. Here&#8217;s the syntax of the ALTER TABLE RENAME [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":13,"menu_order":71,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-843","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PostgreSQL Rename Column<\/title>\n<meta name=\"description\" content=\"In this tutorial, you&#039;ll learn how to use the PostgreSQL ALTER TABLE RENAME COLUMN statement to rename a column of a table.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pgtutorial.com\/postgresql-tutorial\/postgresql-rename-column\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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