{"id":1546,"date":"2025-01-08T10:25:49","date_gmt":"2025-01-08T03:25:49","guid":{"rendered":"https:\/\/www.pgtutorial.com\/?page_id=1546"},"modified":"2025-01-08T10:33:56","modified_gmt":"2025-01-08T03:33:56","slug":"plpgsql-loop","status":"publish","type":"page","link":"https:\/\/www.pgtutorial.com\/plpgsql\/plpgsql-loop\/","title":{"rendered":"PL\/pgSQL LOOP Statement"},"content":{"rendered":"\n<p><strong>Summary:<\/strong> In this tutorial, you&#8217;ll learn how to use the PostgreSQL <code>LOOP<\/code> statement to execute a code block repeatedly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='overview-of-the-plpgsql-loop-statement'>Overview of the PL\/pgSQL LOOP statement <a href=\"#overview-of-the-plpgsql-loop-statement\" class=\"anchor\" id=\"overview-of-the-plpgsql-loop-statement\" title=\"Anchor for Overview of the PL\/pgSQL LOOP statement\">#<\/a><\/h2>\n\n\n\n<p>The <code>LOOP<\/code> statement allows you to execute a code block repeatedly. <\/p>\n\n\n\n<p>Here&#8217;s the basic syntax of the <code>LOOP<\/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-symbol\">&lt;&lt;label&gt;&gt;<\/span>\n<span class=\"hljs-keyword\">LOOP<\/span>\n    <span class=\"hljs-keyword\">statement<\/span>;\n<span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">LOOP<\/span> &#91;label];<\/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 an optional <code>loop label<\/code>.<\/li>\n\n\n\n<li>Next , start the loop by using the <code>LOOP<\/code> keyword.<\/li>\n\n\n\n<li>Then, provide one or more <code>statements<\/code> to execute.<\/li>\n\n\n\n<li>After that, use the <code>END LOOP<\/code> keywords to mark the end of the <code>LOOP<\/code> statement.<\/li>\n\n\n\n<li>Finally, use the optional <code>label<\/code> after the <code>END LOOP<\/code> keyword.<\/li>\n<\/ul>\n\n\n\n<p>The <code>LOOP<\/code> statement will execute the code block between <code>LOOP<\/code> and <code>END LOOP<\/code> repeatedly.<\/p>\n\n\n\n<p>Typically, you specify a condition for terminating the loop using the <code>IF<\/code> and <code>EXIT<\/code> statement:<\/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-symbol\">&lt;&lt;label&gt;&gt;<\/span>\n<span class=\"hljs-keyword\">LOOP<\/span>\n    <span class=\"hljs-keyword\">statement<\/span>;\n    <span class=\"hljs-keyword\">IF<\/span> condition <span class=\"hljs-keyword\">THEN<\/span>\n        <span class=\"hljs-keyword\">EXIT<\/span>;\n    <span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">IF<\/span>;\n<span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">LOOP<\/span> &#91;label];<\/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 <code>condition<\/code> is <code>true<\/code>, the <code>EXIT<\/code> statement executes and terminates the loop.<\/p>\n\n\n\n<p>The following <code>EXIT<\/code> statement with a loop label is equivalent to the <code>IF<\/code> and <code>EXIT<\/code> statement:<\/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\">EXIT<\/span> label <span class=\"hljs-keyword\">WHEN<\/span> condition;<\/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>Note that the <code>label<\/code> is optional. Therefore, you can make it shorter like this:<\/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\">EXIT<\/span> <span class=\"hljs-keyword\">WHEN<\/span> condition;<\/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>Besides the <code>EXIT<\/code> statement, you can use the <code>RETURN<\/code> statement to terminate the loop.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id='plpgsql-loop-statement-example'>PL\/pgSQL LOOP statement example <a href=\"#plpgsql-loop-statement-example\" class=\"anchor\" id=\"plpgsql-loop-statement-example\" title=\"Anchor for PL\/pgSQL LOOP statement example\">#<\/a><\/h2>\n\n\n\n<p>The following example defines a <code>count_down<\/code> function that counts down from <code>n<\/code> to <code>1<\/code> using the <code>LOOP<\/code> statement:<\/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\">CREATE<\/span> <span class=\"hljs-keyword\">OR REPLACE<\/span> <span class=\"hljs-keyword\">FUNCTION<\/span> count_down(\n    n <span class=\"hljs-type\">INT<\/span>\n)\n<span class=\"hljs-keyword\">RETURNS<\/span> <span class=\"hljs-type\">VOID<\/span>\n<span class=\"hljs-keyword\">AS<\/span>\n$$<span class=\"pgsql\">\n<span class=\"hljs-keyword\">DECLARE<\/span>\n    counter <span class=\"hljs-type\">INT<\/span> = n;\n<span class=\"hljs-keyword\">BEGIN<\/span>\n    <span class=\"hljs-keyword\">IF<\/span> n &lt;= <span class=\"hljs-number\">0<\/span> <span class=\"hljs-keyword\">THEN<\/span>\n        <span class=\"hljs-keyword\">RETURN<\/span>;\n    <span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">IF<\/span>;\n\n    <span class=\"hljs-keyword\">LOOP<\/span>\n        <span class=\"hljs-keyword\">RAISE<\/span> <span class=\"hljs-keyword\">NOTICE<\/span> <span class=\"hljs-string\">'%'<\/span>, counter;\n        counter = counter - <span class=\"hljs-number\">1<\/span>;\n        <span class=\"hljs-keyword\">IF<\/span> counter = <span class=\"hljs-number\">0<\/span> <span class=\"hljs-keyword\">THEN<\/span>\n            <span class=\"hljs-keyword\">EXIT<\/span>;\n        <span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">IF<\/span>;\n    <span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">LOOP<\/span>;\n<span class=\"hljs-keyword\">END<\/span>;\n$$<\/span>\n<span class=\"hljs-keyword\">LANGUAGE<\/span> plpgsql;<\/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>How the function works:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>First, declare the <code>counter<\/code> variable in the declaration section and initialize its value to <code>n<\/code>: SQL<code>counter INT = n;<\/code><\/li>\n\n\n\n<li>Second, exit the function if the <code>n<\/code> is less than or equal to zero: SQL<code>IF n &lt;= 0 THEN RETURN; END IF;<\/code><\/li>\n\n\n\n<li>Third, output the value of the <code>counter<\/code>, decrease its value by one in each iteration, and exit the loop when the value of the <code>counter<\/code> is zero: SQL<code>LOOP RAISE NOTICE '%', counter; counter = counter - 1; IF counter = 0 THEN EXIT; END IF; END LOOP;<\/code><\/li>\n<\/ul>\n\n\n\n<p>The following statement uses the <code>count_down<\/code> function to count down from 10:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-6\" 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> count_down(<span class=\"hljs-number\">10<\/span>);<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-6\"><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-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\">NOTICE<\/span>:  <span class=\"hljs-number\">10<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">9<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">8<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">7<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">6<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">5<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">4<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">3<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/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<h2 class=\"wp-block-heading\" id='using-loop-label-example'>Using loop label example <a href=\"#using-loop-label-example\" class=\"anchor\" id=\"using-loop-label-example\" title=\"Anchor for Using loop label example\">#<\/a><\/h2>\n\n\n\n<p>The following defines the <code>count_up<\/code> function that counts from <code>1<\/code> to <code>n<\/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\">CREATE<\/span> <span class=\"hljs-keyword\">OR REPLACE<\/span> <span class=\"hljs-keyword\">FUNCTION<\/span> count_up(\n    n <span class=\"hljs-type\">INT<\/span>\n)\n<span class=\"hljs-keyword\">RETURNS<\/span> <span class=\"hljs-type\">VOID<\/span>\n<span class=\"hljs-keyword\">AS<\/span>\n$$<span class=\"pgsql\">\n<span class=\"hljs-keyword\">DECLARE<\/span>\n    counter <span class=\"hljs-type\">INT<\/span> = <span class=\"hljs-number\">1<\/span>;\n<span class=\"hljs-keyword\">BEGIN<\/span>\n    <span class=\"hljs-keyword\">IF<\/span> n &lt;= <span class=\"hljs-number\">0<\/span> <span class=\"hljs-keyword\">THEN<\/span>\n        <span class=\"hljs-keyword\">RETURN<\/span>;\n    <span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">IF<\/span>;\n\n    <span class=\"hljs-symbol\">&lt;&lt;counting&gt;&gt;<\/span>\n    <span class=\"hljs-keyword\">LOOP<\/span>\n        <span class=\"hljs-keyword\">RAISE<\/span> <span class=\"hljs-keyword\">NOTICE<\/span> <span class=\"hljs-string\">'%'<\/span>, counter;\n        counter = counter + <span class=\"hljs-number\">1<\/span>;\n        <span class=\"hljs-keyword\">EXIT<\/span> counting <span class=\"hljs-keyword\">WHEN<\/span> counter &gt; n;\n    <span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">LOOP<\/span>;\n<span class=\"hljs-keyword\">END<\/span>;\n$$<\/span>\n<span class=\"hljs-keyword\">LANGUAGE<\/span> plpgsql;<\/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>In this <code>count_up<\/code> function:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use the <code>counting<\/code> loop label before the <code>LOOP<\/code> keyword.<\/li>\n\n\n\n<li>Exit the loop specified by the <code>counting<\/code> loop label when the <code>counter<\/code> is greater than <code>n<\/code>.<\/li>\n<\/ul>\n\n\n\n<p>The following example call the count_up function to count up from 1 to 3:<\/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\">SELECT<\/span> count_up(<span class=\"hljs-number\">3<\/span>);<\/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=\"PostgreSQL SQL dialect and PL\/pgSQL\" data-shcb-language-slug=\"pgsql\"><span><code class=\"hljs language-pgsql\"><span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">3<\/span><\/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<h2 class=\"wp-block-heading\" id='nested-loop'>Nested loop <a href=\"#nested-loop\" class=\"anchor\" id=\"nested-loop\" title=\"Anchor for Nested loop\">#<\/a><\/h2>\n\n\n\n<p>PL\/pgSQL allows you to create a nested loop by placing a <code>LOOP<\/code> statement within another <code>LOOP<\/code> statement:<\/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-symbol\">&lt;&lt;outer_loop&gt;&gt;<\/span>\n<span class=\"hljs-keyword\">LOOP<\/span>\n    <span class=\"hljs-keyword\">statement<\/span>;\n    <span class=\"hljs-symbol\">&lt;&lt;inner_loop&gt;&gt;<\/span>\n    <span class=\"hljs-keyword\">LOOP<\/span>\n        <span class=\"hljs-keyword\">statement<\/span>;\n        <span class=\"hljs-keyword\">EXIT<\/span> inner_loop <span class=\"hljs-keyword\">WHEN<\/span> condition;\n    <span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">LOOP<\/span> &#91;inner_loop];\n    <span class=\"hljs-keyword\">EXIT<\/span> outer_loop <span class=\"hljs-keyword\">WHEN<\/span> condition;\n<span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">LOOP<\/span> &#91;outer_loop];<\/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 following example uses a nested loop to generate a multiplication table:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-12\" 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\">DO<\/span> $$<span class=\"pgsql\">\n<span class=\"hljs-keyword\">DECLARE<\/span>\n    v_row <span class=\"hljs-type\">INT<\/span> := <span class=\"hljs-number\">1<\/span>;\n    v_col <span class=\"hljs-type\">INT<\/span> := <span class=\"hljs-number\">1<\/span>;\n<span class=\"hljs-keyword\">BEGIN<\/span>\n    <span class=\"hljs-symbol\">&lt;&lt;outer_loop&gt;&gt;<\/span>\n    <span class=\"hljs-keyword\">LOOP<\/span>\n        <span class=\"hljs-keyword\">EXIT<\/span> <span class=\"hljs-keyword\">WHEN<\/span> v_row &gt; <span class=\"hljs-number\">10<\/span>;\n        v_col := <span class=\"hljs-number\">1<\/span>;\n        <span class=\"hljs-symbol\">&lt;&lt;inner_loop&gt;&gt;<\/span>\n        <span class=\"hljs-keyword\">LOOP<\/span>\n            <span class=\"hljs-keyword\">EXIT<\/span> <span class=\"hljs-keyword\">WHEN<\/span> v_col &gt; <span class=\"hljs-number\">10<\/span>;\n            <span class=\"hljs-keyword\">RAISE<\/span> <span class=\"hljs-keyword\">NOTICE<\/span> <span class=\"hljs-string\">'% * % = %'<\/span>, v_row, v_col, v_row * v_col;\n            v_col := v_col + <span class=\"hljs-number\">1<\/span>;\n        <span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">LOOP<\/span> inner_loop;\n\n        v_row := v_row + <span class=\"hljs-number\">1<\/span>;\n    <span class=\"hljs-keyword\">END<\/span> <span class=\"hljs-keyword\">LOOP<\/span> outer_loop;\n<span class=\"hljs-keyword\">END<\/span> $$<\/span>;<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-12\"><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 example:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Both inner and outer loops iterate through the rows from 1 to 10.<\/li>\n\n\n\n<li>Calculate and display the product for each combination of row and column.<\/li>\n<\/ul>\n\n\n\n<p>Output:<\/p>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-13\" 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\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/span> * <span class=\"hljs-number\">1<\/span> = <span class=\"hljs-number\">1<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/span> * <span class=\"hljs-number\">2<\/span> = <span class=\"hljs-number\">2<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/span> * <span class=\"hljs-number\">3<\/span> = <span class=\"hljs-number\">3<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/span> * <span class=\"hljs-number\">4<\/span> = <span class=\"hljs-number\">4<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/span> * <span class=\"hljs-number\">5<\/span> = <span class=\"hljs-number\">5<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/span> * <span class=\"hljs-number\">6<\/span> = <span class=\"hljs-number\">6<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/span> * <span class=\"hljs-number\">7<\/span> = <span class=\"hljs-number\">7<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/span> * <span class=\"hljs-number\">8<\/span> = <span class=\"hljs-number\">8<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/span> * <span class=\"hljs-number\">9<\/span> = <span class=\"hljs-number\">9<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">1<\/span> * <span class=\"hljs-number\">10<\/span> = <span class=\"hljs-number\">10<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span> * <span class=\"hljs-number\">1<\/span> = <span class=\"hljs-number\">2<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span> * <span class=\"hljs-number\">2<\/span> = <span class=\"hljs-number\">4<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span> * <span class=\"hljs-number\">3<\/span> = <span class=\"hljs-number\">6<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span> * <span class=\"hljs-number\">4<\/span> = <span class=\"hljs-number\">8<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span> * <span class=\"hljs-number\">5<\/span> = <span class=\"hljs-number\">10<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span> * <span class=\"hljs-number\">6<\/span> = <span class=\"hljs-number\">12<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span> * <span class=\"hljs-number\">7<\/span> = <span class=\"hljs-number\">14<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span> * <span class=\"hljs-number\">8<\/span> = <span class=\"hljs-number\">16<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span> * <span class=\"hljs-number\">9<\/span> = <span class=\"hljs-number\">18<\/span>\n<span class=\"hljs-keyword\">NOTICE<\/span>:  <span class=\"hljs-number\">2<\/span> * <span class=\"hljs-number\">10<\/span> = <span class=\"hljs-number\">20<\/span>\n...<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-13\"><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='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 PL\/pgSQL <code>LOOP<\/code> statement to execute a code block repeatedly.<\/li>\n\n\n\n<li>Use the <code>EXIT<\/code> statement with a condition to immediately exit a loop.<\/li>\n\n\n\n<li><code>LOOP<\/code> can be nested.<\/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=plpgsql-loop\"\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 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