MariaDB PERIOD_ADD() Function

The MariaDB PERIOD_ADD() function adds a specified number of months to a period. It takes period formatted as YYMM or YYYYMM and returns the result formatted as YYYYMM.

Syntax

PERIOD_ADD(period, number)

Parameters

`period`	`Required.` Specify the period formatted as either YYMM or YYYYMM.
`number`	`Required.` Specify the number of months to add to the period. It can be a positive or negative value.

Return Value

Returns the period after adding specified number of months.

Example 1:

The example below shows the usage of PERIOD_ADD() function.

SELECT PERIOD_ADD(201808, 4);
Result: 201812

SELECT PERIOD_ADD(201808, -4);
Result: 201804

SELECT PERIOD_ADD(201808, 9);
Result: 201905

SELECT PERIOD_ADD(201808, -9);
Result: 201711

SELECT PERIOD_ADD(1808, 4);
Result: 201812

SELECT PERIOD_ADD(1808, -4);
Result: 201804

SELECT PERIOD_ADD(1808, 9);
Result: 201905

SELECT PERIOD_ADD(1808, -9);
Result: 201711

Example 2:

Consider a database table called Sample with the following records:

Data	Period	Month
Data 1	201404	6
Data 2	201504	7
Data 3	201604	8
Data 4	201704	9
Data 5	201804	10

To create a period based on adding values of column Period and column Month, the following query can be used:

SELECT *, PERIOD_ADD(Period, Month) AS PERIOD_ADD_Value FROM Sample;

This will produce the result as shown below:

Data	Period	Month	PERIOD_ADD_Value
Data 1	201404	6	201410
Data 2	201504	7	201511
Data 3	201604	8	201612
Data 4	201704	9	201801
Data 5	201804	10	201902

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