doc: consistently use "structname" and "structfield" markup

Previously "literal" and "classname" were used, inconsistently, for
SQL table and column names.

Reported-by: Peter Smith

Author: Peter Smith

Discussion: https://postgr.es/m/CAHut+Pvtf24r+bdPgBind84dBLPvgNL7aB+=HxAUupdPuo2gRg@mail.gmail.com

Backpatch-through: master

1 files changed, 5 insertions, 5 deletions

diff --git a/doc/src/sgml/ref/create_trigger.sgml b/doc/src/sgml/ref/create_trigger.sgml
index 0d8d463479b..bb1426f4970 100644
--- a/doc/src/sgml/ref/create_trigger.sgml
+++ b/doc/src/sgml/ref/create_trigger.sgml
@@ -485,7 +485,7 @@ UPDATE OF <replaceable>column_name1</replaceable> [, <replaceable>column_name2</
    to change even when the trigger is not fired, because changes made to the
    row's contents by <literal>BEFORE UPDATE</literal> triggers are not considered.
    Conversely, a command such as <literal>UPDATE ... SET x = x ...</literal>
-   will fire a trigger on column <literal>x</literal>, even though the column's
+   will fire a trigger on column <structfield>x</structfield>, even though the column's
    value did not change.
   </para>
 
@@ -598,7 +598,7 @@ UPDATE OF <replaceable>column_name1</replaceable> [, <replaceable>column_name2</
 
   <para>
    Execute the function <function>check_account_update</function> whenever
-   a row of the table <literal>accounts</literal> is about to be updated:
+   a row of the table <structname>accounts</structname> is about to be updated:
 
 <programlisting>
 CREATE TRIGGER check_update
@@ -608,7 +608,7 @@ CREATE TRIGGER check_update
 </programlisting>
 
    Modify that trigger definition to only execute the function if
-   column <literal>balance</literal> is specified as a target in
+   column <structfield>balance</structfield> is specified as a target in
    the <command>UPDATE</command> command:
 
 <programlisting>
@@ -618,7 +618,7 @@ CREATE OR REPLACE TRIGGER check_update
     EXECUTE FUNCTION check_account_update();
 </programlisting>
 
-   This form only executes the function if column <literal>balance</literal>
+   This form only executes the function if column <structfield>balance</structfield>
    has in fact changed value:
 
 <programlisting>
@@ -629,7 +629,7 @@ CREATE TRIGGER check_update
     EXECUTE FUNCTION check_account_update();
 </programlisting>
 
-   Call a function to log updates of <literal>accounts</literal>, but only if
+   Call a function to log updates of <structname>accounts</structname>, but only if
    something changed:
 
 <programlisting>