-CREATE OR REPLACE FUNCTION generate_create_table_statement(p_table_name varchar)
+CREATE OR REPLACE FUNCTION schema_create_table_statement(p_table_name varchar)
RETURNS text AS
$BODY$
DECLARE
v_table_ddl text;
column_record record;
+ v_schema text;
BEGIN
FOR column_record IN
SELECT
ORDER BY a.attnum
LOOP
IF column_record.attnum = 1 THEN
- v_table_ddl:='CREATE TABLE '||column_record.schema_name||'.'||column_record.table_name||' (';
+ v_table_ddl:='CREATE TABLE '||column_record.schema_name||'.'||column_record.table_name||' ();'||chr(10)||chr(10);
ELSE
- v_table_ddl:=v_table_ddl||',';
+
END IF;
-
+ -- what does this do?
+ v_schema := column_record.schema_name;
+
IF column_record.attnum <= column_record.max_attnum THEN
- v_table_ddl:=v_table_ddl||chr(10)||
- ' '||column_record.column_name||' '||column_record.column_type||' '||column_record.column_default_value||' '||column_record.column_not_null;
+ v_table_ddl:= v_table_ddl||chr(10)||
+ 'ALTER TABLE '||column_record.schema_name||'.'||column_record.table_name||
+ ' ADD COLUMN ' ||column_record.column_name||' '||column_record.column_type||' '||column_record.column_default_value||' '||column_record.column_not_null || ';';
END IF;
END LOOP;
+ v_table_ddl:= v_table_ddl||chr(10);
+ FOR column_record IN
+ SELECT
+ c.oid,
+ c.relname,
+ a.attname,
+ a.attnum,
+ CASE
+ WHEN i.indisprimary THEN 'ALTER TABLE '||v_schema||'.'||p_table_name||' ADD CONSTRAINT ' || c.relname || ' PRIMARY KEY (' || a.attname || ');'
+
+ WHEN i.indisunique THEN 'CREATE UNIQUE INDEX '|| c.relname || ' ON ' ||v_schema||'.'||p_table_name||' USING btree (' || a.attname || ');'
+ ELSE
+ 'CREATE INDEX '|| c.relname || ' ON ' ||v_schema||'.'||p_table_name||' USING btree (' || a.attname || ' );'
+ END as iline
+ FROM pg_index AS i, pg_class AS c, pg_attribute AS a
+ WHERE i.indexrelid = c.oid AND i.indexrelid = a.attrelid AND i.indrelid = (v_schema|| '.' || p_table_name)::regclass
+
+ LOOP
+
+ v_table_ddl:= v_table_ddl||chr(10)||
+ column_record.iline;
+
+ END LOOP;
+ v_table_ddl:= v_table_ddl||chr(10);
+ -- constraints...
+ FOR column_record IN
+
+ SELECT
+ tc.constraint_name, tc.table_name, kcu.column_name,
+ ccu.table_name AS foreign_table_name,
+ ccu.column_name AS foreign_column_name
+ FROM
+ information_schema.table_constraints AS tc
+ JOIN information_schema.key_column_usage AS kcu
+ ON tc.constraint_name = kcu.constraint_name
+ JOIN information_schema.constraint_column_usage AS ccu
+ ON ccu.constraint_name = tc.constraint_name
+ WHERE constraint_type = 'FOREIGN KEY' AND tc.table_name=p_table_name
+
+ LOOP
+
+ v_table_ddl:= v_table_ddl||chr(10)||
+ 'ALTER TABLE ' ||v_schema||'.'||p_table_name||' ADD CONSTRAINT ' || column_record.constraint_name ||
+ ' FOREIGN KEY (' || column_record.column_name || ') REFERENCES ' || column_record.foreign_table_name || '(' || column_record.foreign_column_name || ') MATCH SIMPLE;';
+
+ END LOOP;
+
+
+
+
+
+
+
+ v_table_ddl:= v_table_ddl||chr(10);
+
- v_table_ddl:=v_table_ddl||');';
+ --v_table_ddl:=v_table_ddl||');';
RETURN v_table_ddl;
END;
$BODY$
- LANGUAGE 'plpgsql' COST 100.0 SECURITY INVOKER;
\ No newline at end of file
+ LANGUAGE 'plpgsql' COST 100.0 SECURITY INVOKER;
+
+SELECT schema_create_table_statement('item');
+
\ No newline at end of file