`information_schema.columns.identity_increment`

mysql

type: CHARACTER_DATA NULL

Note:

If the column is an identity column, then the increment of the internal sequence, else null.

10-15

type: CHARACTER_DATA

Note:

Applies to a feature not available in PostgreSQL

8.2-9.6

type: unknown

Note:

If the column is an identity column, then the increment of the internal sequence, else NULL.