What is comment on table in Oracle?
Use the COMMENT statement to add a comment about a table, view, materialized view, or column into the data dictionary. To drop a comment from the database, set it to the empty string ‘ ‘. See Also: “Comments” for more information on associating comments with SQL statements and schema objects.
How do I see comments in a table in SQL?
To view table comment select table and go to Details tab. Scroll down to the last attribute called Comments.
How do you comment on data in a table?
Comments on table data
- Choose Visualize > Table if you’re looking at anything else.
- Click the chat-like icon for the type of comment: Row: visible at the right end of the row. Column: appears when you hover over a column name. Cell: appears when you hover over a cell.
- Enter your comment.
- Click Save.
How do we represent comments in Oracle?
Comments
- Begin the comment with a slash and an asterisk (/*). Proceed with the text of the comment. This text can span multiple lines. End the comment with an asterisk and a slash (*/).
- Begin the comment with — (two hyphens). Proceed with the text of the comment. This text cannot extend to a new line.
How do you comment out in SQL?
To comment out or uncomment SQL code in the SQL and XQuery editor:
- Select the SQL code that you want to comment out or uncomment. For a single line, click anywhere in the line of code. For multiple lines, drag the pointer through the lines of code.
- Right-click the selected SQL code, and then select Toggle Comment.
How do I add a comment to a SQL view?
You can add comments in the Design View if you show the property editor. You want to add comments in the “SQL Comment” field in the “View Designer” group. This comment will display even if the view is opened as Script as well.
What is the shortcut for comment in Oracle SQL Developer?
In SQL Developer you can comment a line or a block using “Source -> Toggle Line Comments” (Ctrl-Slash), but it would be nice to have a button that allows you to do it not only for line or block, but also for a part of a line.
How do you comment code in SQL?
The syntax for a comment in a line of SQL code is a double hyphen ( — ) at the beginning of the line. The comment affects all of the SQL code in the line.
How do you comment in SQL Workbench?
There are three syntaxes that you can use to create a comment within your SQL statement in MySQL.
- Syntax Using # symbol. The syntax for creating a SQL comment in MySQL using # symbol is: # comment goes here.
- Syntax Using — symbol.
- Syntax Using /* and */ symbols.
How do I comment out in mssql?
To comment out lines of code in SQL Server Management Studio (SSMS) Query Window, select lines of code you want to comment out and hit the keyboard shortcut ‘CTRL+K’ followed by ‘CTRL+C’.
What are SQL comments?
Comments are used to explain sections of SQL statements, or to prevent execution of SQL statements. Note: The examples in this chapter will not work in Firefox and Microsoft Edge! Comments are not supported in Microsoft Access databases. Firefox and Microsoft Edge are using Microsoft Access database in our examples.
How do you comment code in SQL Developer?
How to get table comments via SQL in Oracle?
To add a comment to a table,view,or materialized view,you must have COMMENT ANY TABLE system privilege.
What is Oracle table?
New columns mgr,hiredate,sal,and bonus are added. (These existed in the original table but were dropped in previous examples.)
How to list all tables in Oracle?
– List all Tables in Oracle Database – How to List all Tables in Oracle Database Schema – Display all Tables in Oracle Database – List all User Tables In Oracle Database – How to Find List of Tables in Oracle Database – List all Tables and Columns in a Oracle Database
How to create table as select in Oracle?
oracle create table as select. A table can be created from an existing table in the database using a sub query option. The table is created with specified column names and rows retrieved by the select statement are inserted into the table