Vertica Analytics Platform Version 9.2.x Documentation

COMMENT ON PROJECTION

Adds, revises, or removes a comment on a projection. Each object can have one comment. Comments are stored in the system table COMMENTS.

Dropping an object drops all comments associated with the object.

Syntax

COMMENT ON PROJECTION [[database.]schema.]projection IS { 'comment' | NULL }

Parameters

[database.]schema

Specifies a schema, by default public. If schema is any schema other than public, you must supply the schema name. For example:

myschema.thisDbObject

If you specify a database, it must be the current database.

projection

The name of the projection associated with the comment.

comment

Specifies the text of the comment to add. If a comment already exists for this projection, the comment you enter here overwrites the previous comment.

Comments can be up to 8192 characters in length. If a comment exceeds that limitation, Vertica truncates the comment and alerts the user with a message.

Enclose a blank value within single quotes to remove an existing comment.

NULL

Removes an existing comment.

Privileges

Superuser or object owner

Examples

The following example adds a comment to the customer_dimension_vmart_node01 projection:

=> COMMENT ON PROJECTION customer_dimension_vmart_node01 IS 'Test data';

The following examples remove a comment from the customer_dimension_vmart_node01 projection:

=> COMMENT ON PROJECTION customer_dimension_vmart_node01 IS NULL;
=> COMMENT ON PROJECTION customer_dimension_vmart_node01 IS '';

See Also

COMMENTS