XMLCOMMENT Syntax - Analytics Database - Teradata Vantage

XML Data Type

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-10-30
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tkc1628112506748.ditamap
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dita:id
dgs1472251600184
lifecycle
latest
Product Category
Teradata Vantageā„¢
XMLCOMMENT (
  char_value_expr
  [ RETURNING { CONTENT | SEQUENCE } ]
)

Syntax Elements

char_value_expr
A character string.
The data type of char_value_expr can be CLOB, CHAR(n), or VARCHAR(n), where n is as close to 64K as permitted. If the type is CLOB, it cannot be larger than 64K.
If char_value_expr is NULL, the function returns NULL.
If the comment, derived by concatenating '<!-', the character string returned by char_value_expr, and '-->' is not a valid XML comment, an error is raised. For example, char_value_expr should not contain the substring '-->'.
RETURNING CONTENT
The return value is an XQuery document node with the comment node as its child.
RETURNING SEQUENCE
The return value is a sequence with the comment node as its only item. This is the default.