mirror of
https://github.com/MariaDB/server.git
synced 2025-10-31 15:50:51 +03:00
b4dd6de474
Before this fix, the ha_read_last_count status variable was defined and updated internally, for never exposed as a system variable. This fix exposes the system variable as "Handler_read_last", for completness of the Handler_read_* system variables interface. Adjusted tests results accordingly.
61 lines
1.2 KiB
Plaintext
61 lines
1.2 KiB
Plaintext
DROP TABLE IF EXISTS t1;
|
|
CREATE TABLE t1 (a INT, INDEX (a));
|
|
INSERT INTO t1 VALUES (),(),(),(),(),(),(),(),(),();
|
|
FLUSH STATUS;
|
|
SELECT a FROM t1 ORDER BY a LIMIT 1;
|
|
a
|
|
NULL
|
|
SHOW STATUS LIKE 'HANDLER_READ%';
|
|
Variable_name Value
|
|
Handler_read_first 1
|
|
Handler_read_key 0
|
|
Handler_read_last 0
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 0
|
|
FLUSH STATUS;
|
|
SELECT a FROM t1 ORDER BY a DESC LIMIT 1;
|
|
a
|
|
NULL
|
|
SHOW STATUS LIKE 'HANDLER_READ%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 0
|
|
Handler_read_last 1
|
|
Handler_read_next 0
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 0
|
|
FLUSH STATUS;
|
|
SELECT a FROM t1 ORDER BY a LIMIT 3;
|
|
a
|
|
NULL
|
|
NULL
|
|
NULL
|
|
SHOW STATUS LIKE 'HANDLER_READ%';
|
|
Variable_name Value
|
|
Handler_read_first 1
|
|
Handler_read_key 0
|
|
Handler_read_last 0
|
|
Handler_read_next 2
|
|
Handler_read_prev 0
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 0
|
|
FLUSH STATUS;
|
|
SELECT a FROM t1 ORDER BY a DESC LIMIT 3;
|
|
a
|
|
NULL
|
|
NULL
|
|
NULL
|
|
SHOW STATUS LIKE 'HANDLER_READ%';
|
|
Variable_name Value
|
|
Handler_read_first 0
|
|
Handler_read_key 0
|
|
Handler_read_last 1
|
|
Handler_read_next 0
|
|
Handler_read_prev 2
|
|
Handler_read_rnd 0
|
|
Handler_read_rnd_next 0
|
|
DROP TABLE t1;
|