Use the COMMENT statement to add to the data dictionary a comment about a table or table column, unified audit policy, edition, indextype, materialized view, mining model, operator, or view.

This Oracle tutorial explains how to use comments within your SQL statements in Oracle / PLSQL with syntax and examples. Did you know that you can place comments within your SQL statements in …

Jul 23, 2025 · Oracle PL/SQL supports two main types of comments: 1. Single-Line Comments. A Single line comment starts with the (--) double hyphen. It will affect the whole line (till end of line). We don't …

Learn how to use PL/SQL comments including single-line and multi-line comments that allow you to improve the readability of your code.

Feb 4, 2026 · Learn how to write effective comments in SQL statements. Explore syntax for Oracle, SQL Server, MySQL, and PostgreSQL, best practices, optimizer hints, documentation patterns, and …

Feb 6, 2025 · How to Add / Remove comments to a table or column using the COMMENT ON statement. In Oracle, you can add comments to a table or column using the COMMENT ON …

Dec 22, 2019 · Simply naming the variable correctly eliminates the need for a comment. Both of your example is correct and it is good practice of doing comment in sql script.

A statement block can have only one comment containing hints, and that comment must follow the SELECT, UPDATE, INSERT, or DELETE keyword. The following syntax shows hints contained in …

Aug 13, 2020 · There are two syntaxes that you can use to create a comment within your SQL sentences in Oracle/PLSQL. Syntax for creating SQL comments in Oracle using characters –: In …

To comment the source code for later document generation, comments like /** ... */ are used. Within these documentation comments, tags may be used to define the documentation structure. Code …