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-- source include/have_query_cache.inc
-- source include/have_ndb.inc
-- source include/not_embedded.inc
--result_format 2
--disable_warnings
drop table if exists t1;
--enable_warnings
# Turn on and reset query cache
set GLOBAL query_cache_type=on;
set GLOBAL query_cache_size=1355776;
reset query cache;
flush status;
## Turn off autocommit, instead use COMMIT after each statement
set AUTOCOMMIT=off;
## Create test table in NDB
CREATE TABLE t1 (
pk int not null primary key,
a int,
b int not null,
c varchar(20)
) ENGINE=ndbcluster;
## Add first row
insert into t1 value (1, 2, 3, 'First row');
COMMIT;
## Query should be inserted in qcache
--source include/show_qc_status.inc
select * from t1;
--source include/show_qc_status.inc
COMMIT;
--source include/show_qc_status.inc
## Perform the same query and make sure the query cache is hit
--source include/show_qc_status.inc
select * from t1;
COMMIT;
--source include/show_qc_status.inc
## Update the table, should be no queries in cache afterwards
update t1 set a=3 where pk=1;
COMMIT;
--source include/show_qc_status.inc
## Read row after update, should not hit the cache, but get inserted
select * from t1;
COMMIT;
--source include/show_qc_status.inc
## Read row from cache
select * from t1;
COMMIT;
--source include/show_qc_status.inc
## Insert two new rows, queries in cache should be zero
insert into t1 value (2, 7, 8, 'Second row');
insert into t1 value (4, 5, 6, 'Fourth row');
COMMIT;
--source include/show_qc_status.inc
## Read the three rows, should not hit the cache
select * from t1 order by pk;
COMMIT;
--source include/show_qc_status.inc
## Read the three rows, should now hit the cache!
select * from t1 order by pk;
COMMIT;
--source include/show_qc_status.inc
## Two selects in the same transaction should hit cache
select * from t1 order by pk;
select * from t1 order by pk;
COMMIT;
--source include/show_qc_status.inc
## Perform a "new" query and make sure the query cache is not hit
select * from t1 where b=3;
COMMIT;
--source include/show_qc_status.inc
## Same query again...
select * from t1 where b=3;
COMMIT;
--source include/show_qc_status.inc
## Delete from the table, should clear the cache
delete from t1 where c='Fourth row';
COMMIT;
--source include/show_qc_status.inc
select * from t1 where b=3;
COMMIT;
--source include/show_qc_status.inc
## Start another connection and check that the query cache is hit
connect (con1,localhost,root,,);
connection con1;
set AUTOCOMMIT=off;
use test;
select * from t1 order by pk;
select * from t1 where b=3;
--source include/show_qc_status.inc
## Update the table and switch to other connection
update t1 set a=4 where b=3;
COMMIT;
## Connection 2
connect (con2,localhost,root,,);
connection con2;
set AUTOCOMMIT=off;
use test;
## Should not hit cache, table updated
--source include/show_qc_status.inc
select * from t1 order by pk desc;
--source include/show_qc_status.inc
## Should hit cache
select * from t1 order by pk desc;
--source include/show_qc_status.inc
## Connection 1, should hit the cache
connection con1;
--source include/show_qc_status.inc
select * from t1 order by pk desc;
select * from t1 order by pk desc;
--source include/show_qc_status.inc
## Starting transaction and update t1
begin;
update t1 set a=5 where pk=1;
--source include/show_qc_status.inc
## Connection 2
connection con2;
## Update has flushed the qc for t1, should not hit qc
select * from t1 order by pk desc;
--source include/show_qc_status.inc
## Connection 1
connection con1;
commit;
--source include/show_qc_status.inc
## Connection 2
connection con2;
## Update is now committed, should not hit the cache
select * from t1 order by pk desc;
--source include/show_qc_status.inc
COMMIT;
--source include/show_qc_status.inc
## Connection 1
connection con1;
## Should hit the cache
select * from t1 order by pk desc;
--source include/show_qc_status.inc
update t1 set a=6 where pk=1;
## Following query should not be taken from cache, trans is ongoing
select * from t1 order by pk desc;
--source include/show_qc_status.inc
## Connection 2 should still see old data and not hit cache
connection con2;
--source include/show_qc_status.inc
select * from t1 order by pk desc;
--source include/show_qc_status.inc
## Connection 1
connection con1;
COMMIT;
## Update has just been committed, should not hit cache
--source include/show_qc_status.inc
select * from t1 order by pk desc;
--source include/show_qc_status.inc
## Connection 2
connection con2;
## Should hit cache
--source include/show_qc_status.inc
select * from t1 order by pk desc;
--source include/show_qc_status.inc
drop table t1;
## Finally, there should be no queries in cache
--source include/show_qc_status.inc
SET GLOBAL query_cache_size=0;
|
