diff --git a/doc/src/sgml/ref/comment.sgml b/doc/src/sgml/ref/comment.sgml
index 138cf718ce..ab69bd68c8 100644
--- a/doc/src/sgml/ref/comment.sgml
+++ b/doc/src/sgml/ref/comment.sgml
@@ -66,7 +66,7 @@ COMMENT ON
TRIGGER trigger_name ON table_name |
TYPE object_name |
VIEW object_name
-} IS 'text'
+} IS { string_literal | NULL }
where aggregate_signature is:
@@ -264,11 +264,19 @@ COMMENT ON
- text
+ string_literal
- The new comment, written as a string literal; or NULL
- to drop the comment.
+ The new comment contents, written as a string literal.
+
+
+
+
+
+ NULL
+
+
+ Write NULL to drop the comment.
diff --git a/doc/src/sgml/ref/security_label.sgml b/doc/src/sgml/ref/security_label.sgml
index e9688cce21..720f319c8b 100644
--- a/doc/src/sgml/ref/security_label.sgml
+++ b/doc/src/sgml/ref/security_label.sgml
@@ -44,7 +44,7 @@ SECURITY LABEL [ FOR provider ] ON
TABLESPACE object_name |
TYPE object_name |
VIEW object_name
-} IS 'label'
+} IS { string_literal | NULL }
where aggregate_signature is:
@@ -179,11 +179,19 @@ SECURITY LABEL [ FOR provider ] ON
- label
+ string_literal
- The new security label, written as a string literal; or NULL
- to drop the security label.
+ The new setting of the security label, written as a string literal.
+
+
+
+
+
+ NULL
+
+
+ Write NULL to drop the security label.
@@ -194,12 +202,19 @@ SECURITY LABEL [ FOR provider ] ON
Examples
- The following example shows how the security label of a table might
- be changed.
+ The following example shows how the security label of a table could
+ be set or changed:
SECURITY LABEL FOR selinux ON TABLE mytable IS 'system_u:object_r:sepgsql_table_t:s0';
-
+
+
+ To remove the label:
+
+
+SECURITY LABEL FOR selinux ON TABLE mytable IS NULL;
+
+