There is table named history in Zabbix database, I have created partitions on this table.
And the partition type is range and column type is UNIX_TYPESTAMP.
After the date is changed zabbix service does not insert data to the related partition.
What is the problem?
And how do I display all partitions? Could you please help how do I write data to the related partitions?
Sample of Partition creation statement;
.
.
.
ALTER TABLE zabbix.history_test PARTITION BY RANGE(clock)(PARTITION
p28082021 VALUES LESS THAN(UNIX_TIMESTAMP("2021-08-28 00:00:00"
))ENGINE=InnoDB);
Server version: 10.1.31-MariaDB MariaDB Server
EXPLAIN PARTITIONS SELECT * FROM zabbix.history;
+------+-------------+---------+------------+------+---------------+------
| id | select_type | table | partitions | type | possible_keys | key |
key_len | ref | rows | Extra |
| 1 | SIMPLE | history | p28082021 | ALL | NULL | NULL
| NULL | NULL | 18956757 | |
SELECT DISTINCT PARTITION_EXPRESSION FROM
INFORMATION_SCHEMA.PARTITIONS WHERE TABLE_NAME='history' AND
TABLE_SCHEMA='zabbix';
+----------------------+
| PARTITION_EXPRESSION |
+----------------------+
| clock |
+----------------------+
MariaDB [(none)]> SELECT PARTITION_ORDINAL_POSITION, TABLE_ROWS, PARTITION_METHOD
FROM information_schema.PARTITIONS
WHERE TABLE_SCHEMA = 'zabbix' AND TABLE_NAME = 'history';
+----------------------------+------------+------------------+
| PARTITION_ORDINAL_POSITION | TABLE_ROWS | PARTITION_METHOD |
+----------------------------+------------+------------------+
| 1 | 18851132 | RANGE |
+----------------------------+------------+------------------+
SELECT FROM_UNIXTIME(MAX(clock)) FROM zabbix.history;
+---------------------------+
| FROM_UNIXTIME(MAX(clock)) |
+---------------------------+
| 2018-04-07 23:06:06 |
+---------------------------+
SELECT FROM_UNIXTIME(MIN(clock)) FROM zabbix.history;
+---------------------------+
| FROM_UNIXTIME(MIN(clock)) |
+---------------------------+
| 2018-04-06 01:06:23 |
+---------------------------+
This document help me to create partition on clock column. There are stored procedures, that create partitions,you can check it.