Implement support for Foreign Tables and Partitionned Tables.

Due to the way pgloader queries the PostgreSQL catalogs, it restricted the
target table to be “ordinary” tables, as per the relkind description in the
https://www.postgresql.org/docs/current/static/catalog-pg-class.html
PostgreSQL documentation.

Extend this to support relkind of 'r', 'f' and 'p'.

Fixes #587, fixes #690.

src/pgsql/pgsql-schema.lisp

@@ -108,10 +108,11 @@
                            :single)))
 
 
-(defvar *table-type* '((:table    . "r")
-		       (:view     . "v")
-                       (:index    . "i")
-                       (:sequence . "S"))
+(defvar *table-type*
+  '((:table    . ("r" "f" "p"))   ; ordinary, foreign and partitioned
+    (:view     . ("v"))
+    (:index    . ("i"))
+    (:sequence . ("S")))
   "Associate internal table type symbol with what's found in PostgreSQL
   pg_class.relkind column.")
 

src/pgsql/sql/list-all-columns.sql

@@ -16,7 +16,7 @@
                                    and a.attnum = def.adnum
 
      where nspname !~~ '^pg_' and n.nspname <> 'information_schema'
-           and relkind = '~a'
+           and relkind in (~{'~a'~^, ~})
            ~:[~*~;and (~{~a~^~&~10t or ~})~]
            ~:[~*~;and (~{~a~^~&~10t and ~})~]
 

src/pgsql/sql/list-all-fkeys.sql

@@ -27,7 +27,8 @@
         JOIN pg_class cf on r.confrelid = cf.oid
         JOIN pg_namespace nf on cf.relnamespace = nf.oid
    where r.contype = 'f'
-         AND c.relkind = 'r' and cf.relkind = 'r'
+         AND c.relkind in ('r', 'f', 'p')
+         AND cf.relkind in ('r', 'f', 'p')
          AND n.nspname !~~ '^pg_' and n.nspname <> 'information_schema'
          AND nf.nspname !~~ '^pg_' and nf.nspname <> 'information_schema'
          ~:[~*~;and (~{~a~^~&~10t or ~})~]