feat: postgresql数据库sql语句新增视图

ruoyi-fastapi-backend/sql/ruoyi-fastapi-pg.sql

@@ -975,3 +975,71 @@ END;
 $BODY$
     LANGUAGE plpgsql VOLATILE
                      COST 100;
+
+create view list_column as
+SELECT c.relname                                                                           AS table_name,
+       a.attname                                                                           AS column_name,
+       d.description                                                                       AS column_comment,
+       CASE
+           WHEN a.attnotnull AND con.conname IS NULL THEN 1
+           ELSE 0
+           END                                                                             AS is_required,
+       CASE
+           WHEN con.conname IS NOT NULL THEN 1
+           ELSE 0
+           END                                                                             AS is_pk,
+       a.attnum                                                                            AS sort,
+       CASE
+           WHEN "position"(pg_get_expr(ad.adbin, ad.adrelid), ((c.relname::text || '_'::text) || a.attname
+                           ::text) || '_seq'::text) > 0 THEN 1
+           ELSE 0
+           END                                                                             AS is_increment,
+       btrim(
+                   CASE
+                       WHEN t.typelem <> 0::oid AND t.typlen = '-1'::integer THEN 'ARRAY'::text
+            ELSE
+            CASE
+                WHEN t.typtype = 'd'::"char" THEN format_type(t.typbasetype, NULL::integer)
+                ELSE format_type(a.atttypid, NULL::integer)
+            END
+        END, '"'::text) AS column_type
+FROM pg_attribute a
+         JOIN (pg_class c
+    JOIN pg_namespace n ON c.relnamespace = n.oid) ON a.attrelid = c.oid
+         LEFT JOIN pg_description d ON d.objoid = c.oid AND a.attnum = d.objsubid
+         LEFT JOIN pg_constraint con ON con.conrelid = c.oid AND (a.attnum = ANY (con.conkey))
+         LEFT JOIN pg_attrdef ad ON a.attrelid = ad.adrelid AND a.attnum = ad.adnum
+         LEFT JOIN pg_type t ON a.atttypid = t.oid
+WHERE (c.relkind = ANY (ARRAY['r'::"char", 'p'::"char"]))
+  AND a.attnum > 0
+  AND n.nspname = 'public'::name
+  AND not a.attisdropped
+  ORDER BY c.relname, a.attnum;
+
+create view list_table as
+SELECT c.relname              AS table_name,
+       obj_description(c.oid) AS table_comment,
+       CURRENT_TIMESTAMP      AS create_time,
+       CURRENT_TIMESTAMP      AS update_time
+FROM pg_class c
+         LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
+WHERE (c.relkind = ANY (ARRAY['r'::"char", 'p'::"char"]))
+  AND c.relname !~~ 'spatial_%'::text AND n.nspname = 'public'::name AND n.nspname <> ''::name;
+
+CREATE OR REPLACE FUNCTION substring_index(varchar, varchar, integer)
+RETURNS varchar AS $$
+DECLARE
+tokens varchar[];
+length integer ;
+indexnum integer;
+BEGIN
+tokens := pg_catalog.string_to_array($1, $2);
+length := pg_catalog.array_upper(tokens, 1);
+indexnum := length - ($3 * -1) + 1;
+IF $3 >= 0 THEN
+RETURN pg_catalog.array_to_string(tokens[1:$3], $2);
+ELSE
+RETURN pg_catalog.array_to_string(tokens[indexnum:length], $2);
+END IF;
+END;
+$$ IMMUTABLE STRICT LANGUAGE PLPGSQL;