DROP TABLE IF EXISTS graph_base;
DROP TABLE IF EXISTS graph;
CREATE TABLE graph_base (
from_id INT UNSIGNED NOT NULL,
to_id INT UNSIGNED NOT NULL,
PRIMARY KEY (from_id,to_id),
INDEX (to_id)
) ENGINE=MyISAM;
CREATE TABLE graph (
latch   VARCHAR(32) NULL,
origid  BIGINT    UNSIGNED NULL,
destid  BIGINT    UNSIGNED NULL,
weight  DOUBLE    NULL,
seq     BIGINT    UNSIGNED NULL,
linkid  BIGINT    UNSIGNED NULL,
KEY (latch, origid, destid) USING HASH,
KEY (latch, destid, origid) USING HASH
) ENGINE=OQGRAPH DATA_TABLE='graph_base' ORIGID='from_id', DESTID='to_id';
INSERT INTO graph_base(from_id, to_id) VALUES (1,2), (2,1);
INSERT INTO graph_base(from_id, to_id) VALUES (3,2), (2,3);
INSERT INTO graph_base(from_id, to_id) VALUES (1,3), (3,1);
insert into graph values (NULL, 1, 2, 3.0, NULL, NULL);
ERROR HY000: Table 'graph' is read only
delete from graph;
ERROR HY000: Table 'graph' is read only
truncate graph;
ERROR HY000: Table 'graph' is read only
update graph set origid=123;
ERROR HY000: Table 'graph' is read only
DROP TABLE graph_base;
DROP TABLE graph;