The Ultimate Guide to High Availability with MariaDB

Information Schema PERIODS Table

MariaDB starting with 11.4.1

The Information Schema PERIODS table provides information about Application-Time Periods.

It contains the following columns:

ColumnDescription
TABLE_CATALOGAlways contains the string 'def'.
TABLE_SCHEMADatabase name.
TABLE_NAMETable name.
PERIODPeriod name.
START_COLUMN_NAMEName of the column that starts the period.
END_COLUMN_NAMEName of the column that ends the period.

Example

CREATE OR REPLACE TABLE t1(
 name VARCHAR(50), 
 date_1 DATE, 
 date_2 DATE, 
 PERIOD FOR date_period(date_1, date_2)
);

SELECT * FROM INFORMATION_SCHEMA.PERIODS;
+---------------+--------------+------------+-------------+-------------------+-----------------+
| TABLE_CATALOG | TABLE_SCHEMA | TABLE_NAME | PERIOD      | START_COLUMN_NAME | END_COLUMN_NAME |
+---------------+--------------+------------+-------------+-------------------+-----------------+
| def           | test         | t1         | date_period | date_1            | date_2          |
+---------------+--------------+------------+-------------+-------------------+-----------------+

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