Mimer SQL Reference Manual TOC PREV NEXT INDEX

Mimer Developer Site

www.mimer.com/developer


COMMENT


Inserts or replaces a comment on a database object.

Usage

Embedded/Interactive/ODBC/JDBC.

Description

The comment string for the specified object is stored in the data dictionary. Any previously defined comment for the object is replaced by the new.

Restrictions

A comment can only be stored on a system database object by the creator of the object.

A comment can only be stored on a private database object by the creator of the schema to which the object belongs.

See The Data Dictionary for a description of system and private database objects.

Only users with SHADOW privilege may store a comment on a shadow.

Notes

A comment string may have a maximum length of 254 characters and must be enclosed in string delimiters.

Comments may not be altered or dropped directly. However, since the COMMENT statement replaces any existing comment with the new text, a comment may be altered simply by issuing a new COMMENT statement. A comment may be effectively dropped by issuing a COMMENT statement with an empty string.

When a comment is written for a column, the column name must be qualified by a table-name or a view-name in the form table-name.column-name or view-name.column-name.

Standard Compliance

Standard
Compliance
Comments
X/Open-95
SQL92
MIMER EXTENSION
Support for the COMMENT ON statement is a Mimer SQL extension.



Upright Database Technology AB
Voice: +46 18 780 92 00
Fax: +46 18 780 92 40
dbtechnology@upright.se
Mimer SQL Reference Manual TOC PREV NEXT INDEX