diff options
| -rw-r--r-- | doc/src/sgml/datatype.sgml | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml index 87f424e076f..2b043b0d638 100644 --- a/doc/src/sgml/datatype.sgml +++ b/doc/src/sgml/datatype.sgml @@ -4562,6 +4562,10 @@ SELECT * FROM pg_attribute </indexterm> <indexterm zone="datatype-pseudo"> + <primary>event_trigger</primary> + </indexterm> + + <indexterm zone="datatype-pseudo"> <primary>language_handler</primary> </indexterm> @@ -4665,7 +4669,7 @@ SELECT * FROM pg_attribute <row> <entry><type>record</></entry> - <entry>Identifies a function returning an unspecified row type.</entry> + <entry>Identifies a function taking or returning an unspecified row type.</entry> </row> <row> @@ -4674,6 +4678,11 @@ SELECT * FROM pg_attribute </row> <row> + <entry><type>event_trigger</></entry> + <entry>An event trigger function is declared to return <type>event_trigger.</></entry> + </row> + + <row> <entry><type>void</></entry> <entry>Indicates that a function returns no value.</entry> </row> @@ -4695,10 +4704,11 @@ SELECT * FROM pg_attribute <para> Functions coded in procedural languages can use pseudo-types only as - allowed by their implementation languages. At present the procedural - languages all forbid use of a pseudo-type as argument type, and allow + allowed by their implementation languages. At present most procedural + languages forbid use of a pseudo-type as an argument type, and allow only <type>void</> and <type>record</> as a result type (plus - <type>trigger</> when the function is used as a trigger). Some also + <type>trigger</> or <type>event_trigger</> when the function is used + as a trigger or event trigger). Some also support polymorphic functions using the types <type>anyelement</>, <type>anyarray</>, <type>anynonarray</>, <type>anyenum</>, and <type>anyrange</>. |