In SQL Comments, you can comment your code just like any other language. Comments can appear on a single line or span across multiple lines. Let\\’s explore how to comment your SQL statements.<\/p>\n
Syntax
\nThere are two syntaxes that you can use to create a comment in SQL.<\/p>\n
Syntax Using — symbol
\nThe syntax for creating a comment in SQL using — symbol is:<\/p>\n
— comment goes here
\nA comment started with — symbol must be at the end of a line in your SQL statement with a line break after it. This method of commenting can only span a single line within your SQL and must be at the end of the line.<\/p>\n
Syntax Using \/* and *\/ symbols
\nThe syntax for creating a comment in SQL using \/* and *\/ symbols is:<\/p>\n
\/* comment goes here *\/
\nA comment that starts with \/* symbol and ends with *\/ and can be anywhere in your SQL statement. This method of commenting can span several lines within your SQL.<\/p>\n
Example – Comment on a Single Line
\nLet\\’s look at an example that shows how to create a comment in SQL that is on a single line.<\/p>\n
For example:<\/p>\n
Here is a comment that appears on its own line in SQL:<\/p>\n
SELECT websites.site_name
\n\/* comments *\/
\nFROM websites;
\nHere is a comment that appears in the middle of the line in SQL:<\/p>\n
SELECT \/* comments *\/ websites.site_name
\nFROM websites;
\nHere is a comment that appears at the end of the line in SQL:<\/p>\n
SELECT websites.site_name \/* comments *\/
\nFROM websites;
\nor<\/p>\n
SELECT websites.site_name — comments
\nFROM websites;
\nExample – Comment on Multiple Lines
\nYou can also create a comment that spans multiple lines in your SQL statement.<\/p>\n
For example:<\/p>\n
SELECT websites.site_name
\n\/*
\n* comments
\n* Purpose: To show a comment that spans multiple lines in your SQL statement.
\n*\/
\nFROM websites;
\nThis comment spans across multiple lines in SQL and in this example, it spans across 4 lines.<\/p>\n
You can also create a comment that spans multiple lines using this syntax:<\/p>\n
SELECT websites.site_name \/* comments
\nPurpose: To show a comment that spans multiple lines in your SQL statement. *\/
\nFROM websites;
\nSQL will assume that everything after the \/* symbol is a comment until it reaches the *\/ symbol, even if it spans multiple lines within the SQL statement. So in this example, the comment will span across 2 lines.<\/p>\n","protected":false},"excerpt":{"rendered":"
In SQL Comments, you can comment your code just like any other language. Comments can appear on a single line […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[2],"tags":[],"class_list":["post-287","post","type-post","status-publish","format-standard","hentry","category-sql"],"_links":{"self":[{"href":"https:\/\/barkhane.com\/sql\/wp-json\/wp\/v2\/posts\/287","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/barkhane.com\/sql\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/barkhane.com\/sql\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/barkhane.com\/sql\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/barkhane.com\/sql\/wp-json\/wp\/v2\/comments?post=287"}],"version-history":[{"count":0,"href":"https:\/\/barkhane.com\/sql\/wp-json\/wp\/v2\/posts\/287\/revisions"}],"wp:attachment":[{"href":"https:\/\/barkhane.com\/sql\/wp-json\/wp\/v2\/media?parent=287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/barkhane.com\/sql\/wp-json\/wp\/v2\/categories?post=287"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/barkhane.com\/sql\/wp-json\/wp\/v2\/tags?post=287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}