EVOLUTION-MANAGER

Edit File: regression_mdev5744.test

# Regression test for https://mariadb.atlassian.net/browse/MDEV-5744
#--reproduce bug where changes to backing table data are not reflected 
# in a graph table due to query caching

--disable_warnings
DROP TABLE IF EXISTS graph_base;
DROP TABLE IF EXISTS graph;
--enable_warnings

call mtr.add_suppression("graph_base is open on delete");

# Create the backing store
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);

SET @query_cache_size.saved = @@query_cache_size;
SET GLOBAL query_cache_size = 1024*1024;

SELECT * FROM graph;
UPDATE graph_base SET to_id = 20 WHERE from_id = 1;

SELECT * FROM graph;
SELECT SQL_NO_CACHE * FROM graph;

SET GLOBAL query_cache_size = 0;

SELECT SQL_NO_CACHE * FROM graph;

DROP TABLE graph_base, graph;
SET GLOBAL query_cache_size = @query_cache_size.saved;