This patch adds support for %TYPE in CREATE FUNCTION argument and return

types.  This version has an elog() to remind the user the type
resolution is not dynamic.

Ian Lance Taylor

src/test/regress/input/create_function_2.source

@@ -13,6 +13,12 @@ CREATE FUNCTION hobby_construct(text, text)
    LANGUAGE 'sql';
 
 
+CREATE FUNCTION hobbies_by_name(hobbies_r.name%TYPE)
+   RETURNS hobbies_r.person%TYPE
+   AS 'select person from hobbies_r where name = $1'
+   LANGUAGE 'sql';
+
+
 CREATE FUNCTION equipment(hobbies_r)
    RETURNS setof equipment_r
    AS 'select * from equipment_r where hobby = $1.name'

src/test/regress/input/misc.source

@@ -214,6 +214,7 @@ SELECT user_relns() AS user_relns
 
 --SELECT name(equipment(hobby_construct(text 'skywalking', text 'mer'))) AS equip_name;
 
+SELECT hobbies_by_name('basketball');
 
 --
 -- check that old-style C functions work properly with TOASTed values

src/test/regress/output/create_function_2.source

@@ -9,6 +9,12 @@ CREATE FUNCTION hobby_construct(text, text)
    RETURNS hobbies_r
    AS 'select $1 as name, $2 as hobby'
    LANGUAGE 'sql';
+CREATE FUNCTION hobbies_by_name(hobbies_r.name%TYPE)
+   RETURNS hobbies_r.person%TYPE
+   AS 'select person from hobbies_r where name = $1'
+   LANGUAGE 'sql';
+NOTICE:  hobbies_r.name%TYPE converted to text
+NOTICE:  hobbies_r.person%TYPE converted to text
 CREATE FUNCTION equipment(hobbies_r)
    RETURNS setof equipment_r
    AS 'select * from equipment_r where hobby = $1.name'

src/test/regress/output/misc.source

@@ -656,6 +656,12 @@ SELECT user_relns() AS user_relns
 (90 rows)
 
 --SELECT name(equipment(hobby_construct(text 'skywalking', text 'mer'))) AS equip_name;
+SELECT hobbies_by_name('basketball');
+ hobbies_by_name 
+-----------------
+ joe
+(1 row)
+
 --
 -- check that old-style C functions work properly with TOASTed values
 --